Google Git
Sign in
fuchsia / third_party / vulkan-cts / cbc71558335460beeac9ae935d460533b2bd7325 / . / external / vulkancts / modules / vulkan / spirv_assembly / vktSpvAsmVariablePointersTests.cpp
blob: e20712b71aa40694a6c4357c7826e24e2e3323b9 [file] [log] [blame]
/*-------------------------------------------------------------------------
* Vulkan Conformance Tests
* ------------------------
*
* Copyright (c) 2017 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*//*!
* \file
* \brief SPIR-V Assembly Tests for the SPV_KHR_variable_pointers extension
*//*--------------------------------------------------------------------*/
#include "tcuFloat.hpp"
#include "tcuRGBA.hpp"
#include "tcuStringTemplate.hpp"
#include "tcuTestLog.hpp"
#include "tcuVectorUtil.hpp"
#include "vkDefs.hpp"
#include "vkDeviceUtil.hpp"
#include "vkMemUtil.hpp"
#include "vkPlatform.hpp"
#include "vkPrograms.hpp"
#include "vkQueryUtil.hpp"
#include "vkRef.hpp"
#include "vkRefUtil.hpp"
#include "vkStrUtil.hpp"
#include "vkTypeUtil.hpp"
#include "deRandom.hpp"
#include "deStringUtil.hpp"
#include "deUniquePtr.hpp"
#include "deMath.h"
#include "vktSpvAsmComputeShaderCase.hpp"
#include "vktSpvAsmComputeShaderTestUtil.hpp"
#include "vktSpvAsmGraphicsShaderTestUtil.hpp"
#include "vktSpvAsmVariablePointersTests.hpp"
#include "vktTestCaseUtil.hpp"
#include "vktTestGroupUtil.hpp"
#include <limits>
#include <map>
#include <string>
#include <sstream>
#include <utility>
namespace vkt
{
namespace SpirVAssembly
{
using namespace vk;
using std::map;
using std::string;
using std::vector;
using tcu::IVec3;
using tcu::IVec4;
using tcu::RGBA;
using tcu::TestLog;
using tcu::TestStatus;
using tcu::Vec4;
using de::UniquePtr;
using tcu::StringTemplate;
using tcu::Vec4;
namespace
{
template<typename T>
void fillRandomScalars (de::Random& rnd, T minValue, T maxValue, void* dst, int numValues, int offset = 0)
{
T* const typedPtr = (T*)dst;
for (int ndx = 0; ndx < numValues; ndx++)
typedPtr[offset + ndx] = de::randomScalar<T>(rnd, minValue, maxValue);
}
// The following structure (outer_struct) is passed as a vector of 64 32-bit floats into some shaders.
//
// struct struct inner_struct {
// vec4 x[2];
// vec4 y[2];
// };
//
// struct outer_struct {
// inner_struct r[2][2];
// };
//
// This method finds the correct offset from the base of a vector<float32> given the indexes into the structure.
// Returns the index in the inclusive range of 0 and 63. Each unit of the offset represents offset by the size of a 32-bit float.
deUint32 getBaseOffset (deUint32 indexMatrixRow,
deUint32 indexMatrixCol,
deUint32 indexInnerStruct,
deUint32 indexVec4Array,
deUint32 indexVec4)
{
DE_ASSERT(indexMatrixRow < 2);
DE_ASSERT(indexMatrixCol < 2);
DE_ASSERT(indexInnerStruct < 2);
DE_ASSERT(indexVec4Array < 2);
DE_ASSERT(indexVec4 < 4);
deUint32 offset = 0;
// We have a matrix of 2 rows and 2 columns (total of 4 inner_structs). Each inner_struct contains 16 floats.
// So, offset by 1 row means offset by 32 floats, and offset by 1 column means offset by 16 floats.
offset += indexMatrixRow * 32;
offset += indexMatrixCol * 16;
// The inner structure contains 2 members, each having 8 floats.
// So offset by 1 in the inner struct means offset by 8 floats.
offset += indexInnerStruct * 8;
// Each member (x|y) have 2 vectors of 4 floats. So, offset by 1 int the vec4 array means an offset by 4 floats.
offset += indexVec4Array * 4;
// Each vec4 contains 4 floats, so each offset in the vec4 means offset by 1 float.
offset += indexVec4;
return offset;
}
// The following structure (input_buffer) is passed as a vector of 128 32-bit floats into some shaders.
//
// struct struct inner_struct {
// vec4 x[2];
// vec4 y[2];
// };
//
// struct outer_struct {
// inner_struct r[2][2];
// };
//
// struct input_buffer {
// outer_struct a;
// outer_struct b;
// }
//
// This method finds the correct offset from the base of a vector<float32> given the indexes into the structure.
// Returns the index in the inclusive range of 0 and 127.
deUint32 getBaseOffsetForSingleInputBuffer (deUint32 indexOuterStruct,
deUint32 indexMatrixRow,
deUint32 indexMatrixCol,
deUint32 indexInnerStruct,
deUint32 indexVec4Array,
deUint32 indexVec4)
{
DE_ASSERT(indexOuterStruct < 2);
DE_ASSERT(indexMatrixRow < 2);
DE_ASSERT(indexMatrixCol < 2);
DE_ASSERT(indexInnerStruct < 2);
DE_ASSERT(indexVec4Array < 2);
DE_ASSERT(indexVec4 < 4);
// Get the offset assuming you have only one outer_struct.
deUint32 offset = getBaseOffset(indexMatrixRow, indexMatrixCol, indexInnerStruct, indexVec4Array, indexVec4);
// If the second outer structure (b) is chosen in the input_buffer, we need to add an offset of 64 since
// each outer_struct contains 64 floats.
if (indexOuterStruct == 1)
offset += 64;
return offset;
}
void addPhysicalOrVariablePointersComputeGroup (tcu::TestCaseGroup* group, bool physPtrs)
{
tcu::TestContext& testCtx = group->getTestContext();
de::Random rnd (deStringHash(group->getName()));
const int seed = testCtx.getCommandLine().getBaseSeed();
const int numMuxes = 100;
std::string inputArraySize = "200";
vector<float> inputAFloats (2*numMuxes, 0);
vector<float> inputBFloats (2*numMuxes, 0);
vector<float> inputSFloats (numMuxes, 0);
vector<float> AmuxAOutputFloats (numMuxes, 0);
vector<float> AmuxBOutputFloats (numMuxes, 0);
vector<float> incrAmuxAOutputFloats (numMuxes, 0);
vector<float> incrAmuxBOutputFloats (numMuxes, 0);
VulkanFeatures requiredFeatures;
// Each output entry is chosen as follows: ( 0 <= i < numMuxes)
// 1) For tests with one input buffer: output[i] = (s[i] < 0) ? A[2*i] : A[2*i+1];
// 2) For tests with two input buffers: output[i] = (s[i] < 0) ? A[i] : B[i];
fillRandomScalars(rnd, -100.f, 100.f, &inputAFloats[0], 2*numMuxes);
fillRandomScalars(rnd, -100.f, 100.f, &inputBFloats[0], 2*numMuxes);
// We want to guarantee that the S input has some positive and some negative values.
// We choose random negative numbers for the first half, random positive numbers for the second half, and then shuffle.
fillRandomScalars(rnd, -100.f, -1.f , &inputSFloats[0], numMuxes / 2);
fillRandomScalars(rnd, 1.f , 100.f, &inputSFloats[numMuxes / 2], numMuxes / 2);
de::Random(seed).shuffle(inputSFloats.begin(), inputSFloats.end());
for (size_t i = 0; i < numMuxes; ++i)
{
AmuxAOutputFloats[i] = (inputSFloats[i] < 0) ? inputAFloats[2*i] : inputAFloats[2*i+1];
AmuxBOutputFloats[i] = (inputSFloats[i] < 0) ? inputAFloats[i] : inputBFloats[i];
incrAmuxAOutputFloats[i] = (inputSFloats[i] < 0) ? 1 + inputAFloats[2*i] : 1 + inputAFloats[2*i+1];
incrAmuxBOutputFloats[i] = (inputSFloats[i] < 0) ? 1 + inputAFloats[i] : 1 + inputBFloats[i];
}
std::string stringTemplate =
"OpCapability Shader\n"
"${ExtraCapability}\n";
stringTemplate +=
physPtrs ?
"OpExtension \"SPV_EXT_physical_storage_buffer\"\n"
:
"OpExtension \"SPV_KHR_variable_pointers\"\n";
stringTemplate +=
"OpExtension \"SPV_KHR_storage_buffer_storage_class\"\n"
"OpMemoryModel " + string(physPtrs ? "PhysicalStorageBuffer64EXT" : "Logical") + " GLSL450\n"
"OpEntryPoint GLCompute %main \"main\" %id\n"
"OpExecutionMode %main LocalSize 1 1 1\n"
"OpSource GLSL 430\n"
"OpName %main \"main\"\n"
"OpName %id \"gl_GlobalInvocationID\"\n"
// Decorations
"OpDecorate %id BuiltIn GlobalInvocationId\n"
"OpDecorate %f32arr ArrayStride 4\n"
"OpDecorate %sb_f32ptr ArrayStride 4\n"
"OpDecorate %buf Block\n"
"OpMemberDecorate %buf 0 Offset 0\n"
"${ExtraDecorations}";
stringTemplate +=
physPtrs ?
"OpDecorate %physPtrsStruct Block\n"
"OpMemberDecorate %physPtrsStruct 0 Offset 0\n"
"OpMemberDecorate %physPtrsStruct 1 Offset 8\n"
"OpMemberDecorate %physPtrsStruct 2 Offset 16\n"
"OpMemberDecorate %physPtrsStruct 3 Offset 24\n"
"OpDecorate %indata_all DescriptorSet 0\n"
"OpDecorate %indata_all Binding 0\n"
"OpDecorate %first_ptr_param Restrict\n"
"OpDecorate %second_ptr_param Restrict\n"
:
"OpDecorate %indata_a DescriptorSet 0\n"
"OpDecorate %indata_a Binding 0\n"
"OpDecorate %indata_b DescriptorSet 0\n"
"OpDecorate %indata_b Binding 1\n"
"OpDecorate %indata_s DescriptorSet 0\n"
"OpDecorate %indata_s Binding 2\n"
"OpDecorate %outdata DescriptorSet 0\n"
"OpDecorate %outdata Binding 3\n";
stringTemplate +=
string(getComputeAsmCommonTypes());
stringTemplate +=
physPtrs ?
"%sb_f32ptr = OpTypePointer PhysicalStorageBufferEXT %f32\n"
"%buf = OpTypeStruct %f32arr\n"
"%bufptrphys = OpTypePointer PhysicalStorageBufferEXT %buf\n"
"%physPtrsStruct = OpTypeStruct %bufptrphys %bufptrphys %bufptrphys %bufptrphys\n"
"%physPtrsStructPtr = OpTypePointer StorageBuffer %physPtrsStruct\n"
"%indata_all = OpVariable %physPtrsStructPtr StorageBuffer\n"
"%bufptrphysPtr = OpTypePointer StorageBuffer %bufptrphys\n"
:
"%sb_f32ptr = OpTypePointer StorageBuffer %f32\n"
"%buf = OpTypeStruct %f32arr\n"
"%bufptr = OpTypePointer StorageBuffer %buf\n"
"%indata_a = OpVariable %bufptr StorageBuffer\n"
"%indata_b = OpVariable %bufptr StorageBuffer\n"
"%indata_s = OpVariable %bufptr StorageBuffer\n"
"%outdata = OpVariable %bufptr StorageBuffer\n";
stringTemplate +=
"%id = OpVariable %uvec3ptr Input\n"
"%zero = OpConstant %i32 0\n"
"%one = OpConstant %i32 1\n"
"%two = OpConstant %i32 2\n"
"%three = OpConstant %i32 3\n"
"%fzero = OpConstant %f32 0\n"
"%fone = OpConstant %f32 1\n"
"${ExtraTypes}"
"${ExtraGlobalScopeVars}"
// We're going to put the "selector" function here.
// This function type is needed tests that use OpFunctionCall.
"%selector_func_type = OpTypeFunction %sb_f32ptr %bool %sb_f32ptr %sb_f32ptr\n"
"%choose_input_func = OpFunction %sb_f32ptr None %selector_func_type\n"
"%is_neg_param = OpFunctionParameter %bool\n"
"%first_ptr_param = OpFunctionParameter %sb_f32ptr\n"
"%second_ptr_param = OpFunctionParameter %sb_f32ptr\n"
"%selector_func_begin = OpLabel\n"
"%result_ptr = OpSelect %sb_f32ptr %is_neg_param %first_ptr_param %second_ptr_param\n"
"OpReturnValue %result_ptr\n"
"OpFunctionEnd\n"
// main function is the entry_point
"%main = OpFunction %void None %voidf\n"
"%label = OpLabel\n"
"${ExtraFunctionScopeVars}";
if (physPtrs)
{
stringTemplate +=
"%indata_a_ptr = OpAccessChain %bufptrphysPtr %indata_all %zero\n"
"%indata_a = OpLoad %bufptrphys %indata_a_ptr\n"
"%indata_b_ptr = OpAccessChain %bufptrphysPtr %indata_all %one\n"
"%indata_b = OpLoad %bufptrphys %indata_b_ptr\n"
"%indata_s_ptr = OpAccessChain %bufptrphysPtr %indata_all %two\n"
"%indata_s = OpLoad %bufptrphys %indata_s_ptr\n"
"%outdata_ptr = OpAccessChain %bufptrphysPtr %indata_all %three\n"
"%outdata = OpLoad %bufptrphys %outdata_ptr\n";
}
stringTemplate +=
"%idval = OpLoad %uvec3 %id\n"
"%i = OpCompositeExtract %u32 %idval 0\n"
"%two_i = OpIAdd %u32 %i %i\n"
"%two_i_plus_1 = OpIAdd %u32 %two_i %one\n"
"%inloc_a_i = OpAccessChain %sb_f32ptr %indata_a %zero %i\n"
"%inloc_b_i = OpAccessChain %sb_f32ptr %indata_b %zero %i\n"
"%inloc_s_i = OpAccessChain %sb_f32ptr %indata_s %zero %i\n"
"%outloc_i = OpAccessChain %sb_f32ptr %outdata %zero %i\n"
"%inloc_a_2i = OpAccessChain %sb_f32ptr %indata_a %zero %two_i\n"
"%inloc_a_2i_plus_1 = OpAccessChain %sb_f32ptr %indata_a %zero %two_i_plus_1\n"
"%inval_s_i = OpLoad %f32 %inloc_s_i Aligned 4\n"
"%is_neg = OpFOrdLessThan %bool %inval_s_i %fzero\n"
"${ExtraSetupComputations}"
"${ResultStrategy}"
"%mux_output = OpLoad %f32 ${VarPtrName} Aligned 4\n"
" OpStore %outloc_i %mux_output Aligned 4\n"
" OpReturn\n"
" OpFunctionEnd\n";
const StringTemplate shaderTemplate (stringTemplate);
const bool singleInputBuffer[] = { true, false };
for (int inputBufferTypeIndex = 0 ; inputBufferTypeIndex < 2; ++inputBufferTypeIndex)
{
const bool isSingleInputBuffer = singleInputBuffer[inputBufferTypeIndex];
const string extraCap = string(physPtrs ? "OpCapability PhysicalStorageBufferAddressesEXT\n" :
isSingleInputBuffer ? "OpCapability VariablePointersStorageBuffer\n" : "OpCapability VariablePointers\n");
const vector<float>& expectedOutput = isSingleInputBuffer ? AmuxAOutputFloats : AmuxBOutputFloats;
const vector<float>& expectedIncrOutput = isSingleInputBuffer ? incrAmuxAOutputFloats : incrAmuxBOutputFloats;
const string bufferType = isSingleInputBuffer ? "single_buffer" : "two_buffers";
const string muxInput1 = isSingleInputBuffer ? " %inloc_a_2i " : " %inloc_a_i ";
const string muxInput2 = isSingleInputBuffer ? " %inloc_a_2i_plus_1 " : " %inloc_b_i ";
// Set the proper extension features required for the test
if (physPtrs)
{
requiredFeatures.extVariablePointers = 0;
}
else
{
if (isSingleInputBuffer)
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS_STORAGEBUFFER;
else
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
}
{ // Variable Pointer Reads (using OpSelect)
ComputeShaderSpec spec;
map<string, string> specs;
string name = "reads_opselect_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] = "%mux_output_var_ptr = OpSelect %sb_f32ptr %is_neg" + muxInput1 + muxInput2 + "\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
{ // Variable Pointer Reads (using OpFunctionCall)
ComputeShaderSpec spec;
map<string, string> specs;
string name = "reads_opfunctioncall_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] = "%mux_output_var_ptr = OpFunctionCall %sb_f32ptr %choose_input_func %is_neg" + muxInput1 + muxInput2 + "\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
{ // Variable Pointer Reads (using OpPhi)
ComputeShaderSpec spec;
map<string, string> specs;
string name = "reads_opphi_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
" OpSelectionMerge %end_label None\n"
" OpBranchConditional %is_neg %take_mux_input_1 %take_mux_input_2\n"
"%take_mux_input_1 = OpLabel\n"
" OpBranch %end_label\n"
"%take_mux_input_2 = OpLabel\n"
" OpBranch %end_label\n"
"%end_label = OpLabel\n"
"%mux_output_var_ptr = OpPhi %sb_f32ptr" + muxInput1 + "%take_mux_input_1" + muxInput2 + "%take_mux_input_2\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
{ // Variable Pointer Reads (using OpCopyObject)
ComputeShaderSpec spec;
map<string, string> specs;
string name = "reads_opcopyobject_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%mux_input_1_copy = OpCopyObject %sb_f32ptr" + muxInput1 + "\n"
"%mux_input_2_copy = OpCopyObject %sb_f32ptr" + muxInput2 + "\n"
"%mux_output_var_ptr = OpSelect %sb_f32ptr %is_neg %mux_input_1_copy %mux_input_2_copy\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
{ // Test storing into Private variables.
const char* storageClasses[] = {"Private", "Function"};
for (int classId = 0; classId < 2; ++classId)
{
ComputeShaderSpec spec;
map<string, string> specs;
std::string storageClass = storageClasses[classId];
std::string name = "stores_" + string(de::toLower(storageClass)) + "_" + bufferType;
std::string description = "Test storing variable pointer into " + storageClass + " variable.";
std::string extraVariable = "%mux_output_copy = OpVariable %sb_f32ptrptr " + storageClass + "\n";
specs["ExtraTypes"] = "%sb_f32ptrptr = OpTypePointer " + storageClass + " %sb_f32ptr\n";
specs["ExtraCapability"] = extraCap;
specs["ExtraGlobalScopeVars"] = (classId == 0) ? extraVariable : "";
specs["ExtraFunctionScopeVars"] = (classId == 1) ? extraVariable : "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = physPtrs ? "OpDecorate %mux_output_copy AliasedPointerEXT\n" : "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%opselect_result = OpSelect %sb_f32ptr %is_neg" + muxInput1 + muxInput2 + "\n"
" OpStore %mux_output_copy %opselect_result\n"
"%mux_output_var_ptr = OpLoad %sb_f32ptr %mux_output_copy Aligned 4\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), description.c_str(), spec));
}
}
{ // Variable Pointer Reads (Using OpPtrAccessChain)
ComputeShaderSpec spec;
map<string, string> specs;
std::string name = "reads_opptraccesschain_" + bufferType;
std::string in_1 = isSingleInputBuffer ? " %a_2i_ptr " : " %a_i_ptr ";
std::string in_2 = isSingleInputBuffer ? " %a_2i_plus_1_ptr " : " %b_i_ptr ";
specs["ExtraTypes"] = "";
specs["ExtraCapability"] = extraCap;
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%a_ptr = OpAccessChain %sb_f32ptr %indata_a %zero %zero\n"
"%b_ptr = OpAccessChain %sb_f32ptr %indata_b %zero %zero\n"
"%s_ptr = OpAccessChain %sb_f32ptr %indata_s %zero %zero\n"
"%out_ptr = OpAccessChain %sb_f32ptr %outdata %zero %zero\n"
"%a_i_ptr = OpPtrAccessChain %sb_f32ptr %a_ptr %i\n"
"%b_i_ptr = OpPtrAccessChain %sb_f32ptr %b_ptr %i\n"
"%s_i_ptr = OpPtrAccessChain %sb_f32ptr %s_ptr %i\n"
"%a_2i_ptr = OpPtrAccessChain %sb_f32ptr %a_ptr %two_i\n"
"%a_2i_plus_1_ptr = OpPtrAccessChain %sb_f32ptr %a_ptr %two_i_plus_1\n"
"%mux_output_var_ptr = OpSelect %sb_f32ptr %is_neg " + in_1 + in_2 + "\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
{ // Variable Pointer Writes
ComputeShaderSpec spec;
map<string, string> specs;
std::string name = "writes_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] = "";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] = "%mux_output_var_ptr = OpSelect %sb_f32ptr %is_neg" + muxInput1 + muxInput2 + "\n" +
" %val = OpLoad %f32 %mux_output_var_ptr Aligned 4\n"
" %val_plus_1 = OpFAdd %f32 %val %fone\n"
" OpStore %mux_output_var_ptr %val_plus_1 Aligned 4\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedIncrOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// If we only have VariablePointersStorageBuffer, then the extension does not apply to Workgroup storage class.
// Therefore the Workgroup tests apply to cases where the VariablePointers capability is used (when 2 input buffers are used).
if (!physPtrs && !isSingleInputBuffer)
{
// VariablePointers on Workgroup
ComputeShaderSpec spec;
map<string, string> specs;
std::string name = "workgroup_" + bufferType;
specs["ExtraCapability"] = extraCap;
specs["ExtraTypes"] =
"%c_i32_N = OpConstant %i32 " + inputArraySize + " \n"
"%f32arr_N = OpTypeArray %f32 %c_i32_N\n"
"%f32arr_wrkgrp_ptr = OpTypePointer Workgroup %f32arr_N\n"
"%f32_wrkgrp_ptr = OpTypePointer Workgroup %f32\n";
specs["ExtraGlobalScopeVars"] =
"%AW = OpVariable %f32arr_wrkgrp_ptr Workgroup\n"
"%BW = OpVariable %f32arr_wrkgrp_ptr Workgroup\n";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraSetupComputations"] =
"%loc_AW_i = OpAccessChain %f32_wrkgrp_ptr %AW %i\n"
"%loc_BW_i = OpAccessChain %f32_wrkgrp_ptr %BW %i\n"
"%inval_a_i = OpLoad %f32 %inloc_a_i\n"
"%inval_b_i = OpLoad %f32 %inloc_b_i\n"
"%inval_a_2i = OpLoad %f32 %inloc_a_2i\n"
"%inval_a_2i_plus_1 = OpLoad %f32 %inloc_a_2i_plus_1\n";
specs["ExtraDecorations"] = "";
specs["VarPtrName"] = "%output_var_ptr";
specs["ResultStrategy"] =
" OpStore %loc_AW_i %inval_a_i\n"
" OpStore %loc_BW_i %inval_b_i\n"
"%output_var_ptr = OpSelect %f32_wrkgrp_ptr %is_neg %loc_AW_i %loc_BW_i\n";
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(numMuxes, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back (Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back (Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back (Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
}
}
void addVariablePointersComputeGroup(tcu::TestCaseGroup* group)
{
addPhysicalOrVariablePointersComputeGroup(group, false);
}
void addPhysicalPointersComputeGroup(tcu::TestCaseGroup* group)
{
addPhysicalOrVariablePointersComputeGroup(group, true);
}
void addComplexTypesPhysicalOrVariablePointersComputeGroup (tcu::TestCaseGroup* group, bool physPtrs)
{
tcu::TestContext& testCtx = group->getTestContext();
const int numFloats = 64;
vector<float> inputA (numFloats, 0);
vector<float> inputB (numFloats, 0);
vector<float> inputC (2*numFloats, 0);
vector<float> expectedOutput (1, 0);
VulkanFeatures requiredFeatures;
// These tests exercise variable pointers into various levels of the following data-structures.
//
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors. Each vector is 4 floats.
// vec4 y[2]; // array of 2 vectors. Each vector is 4 floats.
// };
//
// struct outer_struct {
// inner_struct r[2][2];
// };
//
// struct input_buffer {
// outer_struct a;
// outer_struct b;
// }
//
// inputA is of type outer_struct.
// inputB is of type outer_struct.
// inputC is of type input_buffer.
//
// inputA and inputB are of the same size. When testing variable pointers pointing to
// two different input buffers, we use inputA and inputB.
//
// inputC is twice the size of inputA. When testing the VariablePointersStorageBuffer capability,
// the variable pointer must be confined to a single buffer. These tests will use inputC.
//
// The inner_struct contains 16 floats.
// The outer_struct contains 64 floats.
// The input_buffer contains 128 floats.
// Populate the first input (inputA) to contain: {0, 4, ... , 252}
// Populate the second input (inputB) to contain: {3, 7, ... , 255}
// Populate the third input (inputC) to contain: {0, 4, ... , 252, 3, 7, ... , 255}
// Note that the first half of inputC is the same as inputA and the second half is the same as inputB.
for (size_t i = 0; i < numFloats; ++i)
{
inputA[i] = 4*float(i) / 255;
inputB[i] = ((4*float(i)) + 3) / 255;
inputC[i] = inputA[i];
inputC[i + numFloats] = inputB[i];
}
// In the following tests we use variable pointers to point to different types:
// nested structures, matrices of structures, arrays of structures, arrays of vectors, vectors of scalars, and scalars.
// outer_structure.inner_structure[?][?].x[?][?];
// ^ ^ ^ ^ ^ ^ ^
//
// For tests with 2 input buffers:
// 1. inputA or inputB = nested structure
// 2. inputA.r or inputB.r = matrices of structures
// 3. inputA.r[?] or inputB.r[?] = arrays of structures
// 4. inputA.r[?][?] or inputB.r[?][?] = structures
// 5. inputA.r[?][?].(x|y) or inputB.r[?][?].(x|y) = arrays of vectors
// 6. inputA.r[?][?].(x|y)[?] or inputB.r[?][?].(x|y)[?] = vectors of scalars
// 7. inputA.r[?][?].(x|y)[?][?] or inputB.r[?][?].(x|y)[?][?] = scalars
// For tests with 1 input buffer:
// 1. inputC.a or inputC.b = nested structure
// 2. inputC.a.r or inputC.b.r = matrices of structures
// 3. inputC.a.r[?] or inputC.b.r[?] = arrays of structures
// 4. inputC.a.r[?][?] or inputC.b.r[?][?] = structures
// 5. inputC.a.r[?][?].(x|y) or inputC.b.r[?][?].(x|y) = arrays of vectors
// 6. inputC.a.r[?][?].(x|y)[?] or inputC.b.r[?][?].(x|y)[?] = vectors of scalars
// 7. inputC.a.r[?][?].(x|y)[?][?] or inputC.b.r[?][?].(x|y)[?][?] = scalars
const int numLevels = 7;
// Decorations
string commonDecorations =
physPtrs ?
"OpDecorate %physPtrsStruct Block\n"
"OpMemberDecorate %physPtrsStruct 0 Offset 0\n"
"OpMemberDecorate %physPtrsStruct 1 Offset 8\n"
"OpMemberDecorate %physPtrsStruct 2 Offset 16\n"
"OpMemberDecorate %physPtrsStruct 3 Offset 24\n"
"OpDecorate %indata_all DescriptorSet 0\n"
"OpDecorate %indata_all Binding 0\n"
"OpDecorate %first_param Restrict\n"
"OpDecorate %second_param Restrict\n"
:
"OpDecorate %outdata DescriptorSet 0 \n"
"OpDecorate %outdata Binding 3 \n";
commonDecorations +=
"OpDecorate %id BuiltIn GlobalInvocationId \n"
// Set the Block decoration
"OpDecorate %output_buffer Block \n"
// Set the Offsets
"OpMemberDecorate %output_buffer 0 Offset 0 \n"
"OpMemberDecorate %input_buffer 0 Offset 0 \n"
"OpMemberDecorate %input_buffer 1 Offset 256 \n"
"OpMemberDecorate %outer_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 1 Offset 32 \n"
// Set the ArrayStrides
"OpDecorate %arr2_v4float ArrayStride 16 \n"
"OpDecorate %arr2_inner_struct ArrayStride 64 \n"
"OpDecorate %mat2x2_inner_struct ArrayStride 128 \n"
"OpDecorate %outer_struct_ptr ArrayStride 256 \n"
"OpDecorate %v4f32_ptr ArrayStride 16 \n";
const string inputABDecorations (
"OpDecorate %inputA DescriptorSet 0 \n"
"OpDecorate %inputB DescriptorSet 0 \n"
"OpDecorate %inputA Binding 0 \n"
"OpDecorate %inputB Binding 1 \n"
// inputA and inputB have type outer_struct so it needs Block
"OpDecorate %outer_struct Block \n"
);
const string inputCDecorations (
"OpDecorate %inputC DescriptorSet 0 \n"
"OpDecorate %inputC Binding 2 \n"
// inputC has type input_buffer so it needs Block
"OpDecorate %input_buffer Block \n"
);
string types =
///////////////
// CONSTANTS //
///////////////
"%c_bool_true = OpConstantTrue %bool \n"
"%c_bool_false = OpConstantFalse %bool \n"
"%c_i32_0 = OpConstant %i32 0 \n"
"%c_i32_1 = OpConstant %i32 1 \n"
"%c_i32_2 = OpConstant %i32 2 \n"
"%c_i32_3 = OpConstant %i32 3 \n"
"%c_u32_2 = OpConstant %u32 2 \n"
///////////
// TYPES //
///////////
"%v4f32 = OpTypeVector %f32 4 \n"
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors
// vec4 y[2]; // array of 2 vectors
// };
"%arr2_v4float = OpTypeArray %v4f32 %c_u32_2 \n"
"%inner_struct = OpTypeStruct %arr2_v4float %arr2_v4float \n"
// struct outer_struct {
// inner_struct r[2][2];
// };
"%arr2_inner_struct = OpTypeArray %inner_struct %c_u32_2 \n"
"%mat2x2_inner_struct = OpTypeArray %arr2_inner_struct %c_u32_2 \n"
"%outer_struct = OpTypeStruct %mat2x2_inner_struct \n"
// struct input_buffer {
// outer_struct a;
// outer_struct b;
// }
"%input_buffer = OpTypeStruct %outer_struct %outer_struct \n"
// struct output_struct {
// float out;
// }
"%output_buffer = OpTypeStruct %f32 \n";
///////////////////
// POINTER TYPES //
///////////////////
types +=
physPtrs ?
"%output_buffer_ptr = OpTypePointer PhysicalStorageBufferEXT %output_buffer \n"
"%input_buffer_ptr = OpTypePointer PhysicalStorageBufferEXT %input_buffer \n"
"%outer_struct_ptr = OpTypePointer PhysicalStorageBufferEXT %outer_struct \n"
"%mat2x2_ptr = OpTypePointer PhysicalStorageBufferEXT %mat2x2_inner_struct \n"
"%arr2_ptr = OpTypePointer PhysicalStorageBufferEXT %arr2_inner_struct \n"
"%inner_struct_ptr = OpTypePointer PhysicalStorageBufferEXT %inner_struct \n"
"%arr_v4f32_ptr = OpTypePointer PhysicalStorageBufferEXT %arr2_v4float \n"
"%v4f32_ptr = OpTypePointer PhysicalStorageBufferEXT %v4f32 \n"
"%sb_f32ptr = OpTypePointer PhysicalStorageBufferEXT %f32 \n"
"%physPtrsStruct = OpTypeStruct %outer_struct_ptr %outer_struct_ptr %input_buffer_ptr %output_buffer_ptr\n"
"%physPtrsStructPtr = OpTypePointer StorageBuffer %physPtrsStruct\n"
"%outer_struct_ptr_ptr = OpTypePointer StorageBuffer %outer_struct_ptr\n"
"%input_buffer_ptr_ptr = OpTypePointer StorageBuffer %input_buffer_ptr\n"
"%output_buffer_ptr_ptr = OpTypePointer StorageBuffer %output_buffer_ptr\n"
:
"%output_buffer_ptr = OpTypePointer StorageBuffer %output_buffer \n"
"%input_buffer_ptr = OpTypePointer StorageBuffer %input_buffer \n"
"%outer_struct_ptr = OpTypePointer StorageBuffer %outer_struct \n"
"%mat2x2_ptr = OpTypePointer StorageBuffer %mat2x2_inner_struct \n"
"%arr2_ptr = OpTypePointer StorageBuffer %arr2_inner_struct \n"
"%inner_struct_ptr = OpTypePointer StorageBuffer %inner_struct \n"
"%arr_v4f32_ptr = OpTypePointer StorageBuffer %arr2_v4float \n"
"%v4f32_ptr = OpTypePointer StorageBuffer %v4f32 \n"
"%sb_f32ptr = OpTypePointer StorageBuffer %f32 \n";
types += "${extra_types}\n";
///////////////
// VARIABLES //
///////////////
types +=
physPtrs ?
"%id = OpVariable %uvec3ptr Input \n"
"%indata_all = OpVariable %physPtrsStructPtr StorageBuffer\n"
:
"%id = OpVariable %uvec3ptr Input \n"
"%outdata = OpVariable %output_buffer_ptr StorageBuffer \n";
string inputABVariables =
physPtrs ?
""
:
"%inputA = OpVariable %outer_struct_ptr StorageBuffer \n"
"%inputB = OpVariable %outer_struct_ptr StorageBuffer \n";
string inputCVariables =
physPtrs ?
""
:
"%inputC = OpVariable %input_buffer_ptr StorageBuffer \n";
const string inputCIntermediates (
// Here are the 2 nested structures within InputC.
"%inputC_a = OpAccessChain %outer_struct_ptr %inputC %c_i32_0\n"
"%inputC_b = OpAccessChain %outer_struct_ptr %inputC %c_i32_1\n"
);
std::string stringTemplate =
"OpCapability Shader\n"
"${extra_capability}\n";
stringTemplate +=
physPtrs ?
"OpExtension \"SPV_EXT_physical_storage_buffer\"\n"
:
"OpExtension \"SPV_KHR_variable_pointers\"\n";
stringTemplate +=
"OpExtension \"SPV_KHR_storage_buffer_storage_class\"\n"
"OpMemoryModel " + string(physPtrs ? "PhysicalStorageBuffer64EXT" : "Logical") + " GLSL450\n"
"OpEntryPoint GLCompute %main \"main\" %id\n"
"OpExecutionMode %main LocalSize 1 1 1\n"
"OpSource GLSL 430\n"
"OpName %main \"main\"\n"
"OpName %id \"gl_GlobalInvocationID\"\n"
+ commonDecorations +
"${input_decorations}\n"
+ string(getComputeAsmCommonTypes())
+ types +
"${input_variables}\n"
// These selector functions return variable pointers.
// These functions are used by tests that use OpFunctionCall to obtain the variable pointer
"%selector_func_type = OpTypeFunction ${selected_type} %bool ${selected_type} ${selected_type}\n"
"%choose_input_func = OpFunction ${selected_type} None %selector_func_type\n"
"%choose_first_param = OpFunctionParameter %bool\n"
"%first_param = OpFunctionParameter ${selected_type}\n"
"%second_param = OpFunctionParameter ${selected_type}\n"
"%selector_func_begin = OpLabel\n"
"%result_ptr = OpSelect ${selected_type} %choose_first_param %first_param %second_param\n"
"OpReturnValue %result_ptr\n"
"OpFunctionEnd\n"
// main function is the entry_point
"%main = OpFunction %void None %voidf\n"
"%label = OpLabel\n";
if (physPtrs)
{
stringTemplate +=
"%inputA_ptr = OpAccessChain %outer_struct_ptr_ptr %indata_all %c_i32_0\n"
"%inputA = OpLoad %outer_struct_ptr %inputA_ptr\n"
"%inputB_ptr = OpAccessChain %outer_struct_ptr_ptr %indata_all %c_i32_1\n"
"%inputB = OpLoad %outer_struct_ptr %inputB_ptr\n"
"%inputC_ptr = OpAccessChain %input_buffer_ptr_ptr %indata_all %c_i32_2\n"
"%inputC = OpLoad %input_buffer_ptr %inputC_ptr\n"
"%outdata_ptr = OpAccessChain %output_buffer_ptr_ptr %indata_all %c_i32_3\n"
"%outdata = OpLoad %output_buffer_ptr %outdata_ptr\n";
}
stringTemplate +=
"${input_intermediates}\n"
// Define the 2 pointers from which we're going to choose one.
"${a_loc} \n"
"${b_loc} \n"
// Choose between the 2 pointers / variable pointers.
"${selection_strategy} \n"
// OpAccessChain into the variable pointer until you get to the float.
"%result_loc = OpAccessChain %sb_f32ptr %var_ptr ${remaining_indexes} \n"
// Now load from the result_loc
"%result_val = OpLoad %f32 %result_loc Aligned 4\n"
// Store the chosen value to the output buffer.
"%outdata_loc = OpAccessChain %sb_f32ptr %outdata %c_i32_0\n"
" OpStore %outdata_loc %result_val Aligned 4\n"
" OpReturn\n"
" OpFunctionEnd\n";
const StringTemplate shaderTemplate (stringTemplate);
for (int isSingleInputBuffer = 0 ; isSingleInputBuffer < 2; ++isSingleInputBuffer)
{
// Set the proper extension features required for the test
if (physPtrs)
{
requiredFeatures.extVariablePointers = 0;
}
else
{
if (isSingleInputBuffer)
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS_STORAGEBUFFER;
else
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
}
for (int selectInputA = 0; selectInputA < 2; ++selectInputA)
{
const string extraCap = string(physPtrs ? "OpCapability PhysicalStorageBufferAddressesEXT\n" :
isSingleInputBuffer ? "OpCapability VariablePointersStorageBuffer\n" : "OpCapability VariablePointers\n");
const string inputDecorations = isSingleInputBuffer ? inputCDecorations : inputABDecorations;
const string inputVariables = isSingleInputBuffer ? inputCVariables : inputABVariables;
const string inputIntermediates = isSingleInputBuffer ? inputCIntermediates : "";
const vector<float>& selectedInput = isSingleInputBuffer ? inputC : (selectInputA ? inputA : inputB);
const string bufferType = isSingleInputBuffer ? "single_buffer_" : "two_buffers_";
const string baseA = isSingleInputBuffer ? "%inputC_a" : "%inputA";
const string baseB = isSingleInputBuffer ? "%inputC_b" : "%inputB";
const string selectedInputStr = selectInputA ? "first_input" : "second_input";
const string spirvSelectInputA = selectInputA ? "%c_bool_true" : "%c_bool_false";
const int outerStructIndex = isSingleInputBuffer ? (selectInputA ? 0 : 1) : 0;
// The indexes chosen at each level. At any level, any given offset is exercised.
// outerStructIndex is 0 for inputA and inputB (because outer_struct has only 1 member).
// outerStructIndex is 0 for member <a> of inputC and 1 for member <b>.
const int indexesForLevel[numLevels][6]= {{outerStructIndex, 0, 0, 0, 0, 1},
{outerStructIndex, 1, 0, 1, 0, 2},
{outerStructIndex, 0, 1, 0, 1, 3},
{outerStructIndex, 1, 1, 1, 0, 0},
{outerStructIndex, 0, 0, 1, 1, 1},
{outerStructIndex, 1, 0, 0, 0, 2},
{outerStructIndex, 1, 1, 1, 1, 3}};
const string indexLevelNames[] = {"_outer_struct_", "_matrices_", "_arrays_", "_inner_structs_", "_vec4arr_", "_vec4_", "_float_"};
const string inputALocations[] = { "",
"%a_loc = OpAccessChain %mat2x2_ptr " + baseA + " %c_i32_0",
"%a_loc = OpAccessChain %arr2_ptr " + baseA + " %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %inner_struct_ptr " + baseA + " %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpAccessChain %arr_v4f32_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpAccessChain %v4f32_ptr " + baseA + " %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %sb_f32ptr " + baseA + " %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputBLocations[] = { "",
"%b_loc = OpAccessChain %mat2x2_ptr " + baseB + " %c_i32_0",
"%b_loc = OpAccessChain %arr2_ptr " + baseB + " %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %inner_struct_ptr " + baseB + " %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpAccessChain %arr_v4f32_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpAccessChain %v4f32_ptr " + baseB + " %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %sb_f32ptr " + baseB + " %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputAPtrAccessChain[] = { "",
"%a_loc = OpPtrAccessChain %mat2x2_ptr " + baseA + " %c_i32_0 %c_i32_0",
"%a_loc = OpPtrAccessChain %arr2_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_0",
"%a_loc = OpPtrAccessChain %inner_struct_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpPtrAccessChain %arr_v4f32_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpPtrAccessChain %v4f32_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %a_loc = OpPtrAccessChain %sb_f32ptr baseA %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %a_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%a_loc_arr = OpPtrAccessChain %arr_v4f32_ptr " + baseA + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%a_loc_first_elem = OpAccessChain %v4f32_ptr %a_loc_arr %c_i32_0 "
"%a_loc = OpPtrAccessChain %sb_f32ptr %a_loc_first_elem %c_i32_1 %c_i32_3"};
const string inputBPtrAccessChain[] = { "",
"%b_loc = OpPtrAccessChain %mat2x2_ptr " + baseB + " %c_i32_0 %c_i32_0",
"%b_loc = OpPtrAccessChain %arr2_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_0",
"%b_loc = OpPtrAccessChain %inner_struct_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpPtrAccessChain %arr_v4f32_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpPtrAccessChain %v4f32_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %b_loc = OpPtrAccessChain %sb_f32ptr basseB %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %b_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%b_loc_arr = OpPtrAccessChain %arr_v4f32_ptr " + baseB + " %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%b_loc_first_elem = OpAccessChain %v4f32_ptr %b_loc_arr %c_i32_0 "
"%b_loc = OpPtrAccessChain %sb_f32ptr %b_loc_first_elem %c_i32_1 %c_i32_3"};
const string remainingIndexesAtLevel[]= {"%c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_2",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_3",
"%c_i32_1 %c_i32_0 %c_i32_0",
"%c_i32_1 %c_i32_1",
"%c_i32_2",
""};
const string pointerTypeAtLevel[] = {"%outer_struct_ptr", "%mat2x2_ptr", "%arr2_ptr", "%inner_struct_ptr", "%arr_v4f32_ptr", "%v4f32_ptr", "%sb_f32ptr"};
const string baseANameAtLevel[] = {baseA, "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc"};
const string baseBNameAtLevel[] = {baseB, "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc"};
for (int indexLevel = 0; indexLevel < numLevels; ++indexLevel)
{
const int baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
// Use OpSelect to choose between 2 pointers
{
ComputeShaderSpec spec;
map<string, string> specs;
string opCodeForTests = "opselect";
string name = opCodeForTests + indexLevelNames[indexLevel] + bufferType + selectedInputStr;
specs["extra_types"] = "";
specs["extra_capability"] = extraCap;
specs["input_decorations"] = inputDecorations;
specs["input_variables"] = inputVariables;
specs["input_intermediates"] = inputIntermediates;
specs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect "
+ pointerTypeAtLevel[indexLevel] + " "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
expectedOutput[0] = selectedInput[baseOffset];
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputC)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// Use OpFunctionCall to choose between 2 pointers
{
ComputeShaderSpec spec;
map<string, string> specs;
string opCodeForTests = "opfunctioncall";
string name = opCodeForTests + indexLevelNames[indexLevel] + bufferType + selectedInputStr;
specs["extra_types"] = "";
specs["extra_capability"] = extraCap;
specs["input_decorations"] = inputDecorations;
specs["input_variables"] = inputVariables;
specs["input_intermediates"] = inputIntermediates;
specs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpFunctionCall "
+ pointerTypeAtLevel[indexLevel]
+ " %choose_input_func "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
expectedOutput[0] = selectedInput[baseOffset];
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputC)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// Use OpPhi to choose between 2 pointers
{
ComputeShaderSpec spec;
map<string, string> specs;
string opCodeForTests = "opphi";
string name = opCodeForTests + indexLevelNames[indexLevel] + bufferType + selectedInputStr;
specs["extra_types"] = "";
specs["extra_capability"] = extraCap;
specs["input_decorations"] = inputDecorations;
specs["input_variables"] = inputVariables;
specs["input_intermediates"] = inputIntermediates;
specs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
" OpSelectionMerge %end_label None\n"
" OpBranchConditional " + spirvSelectInputA + " %take_input_a %take_input_b\n"
"%take_input_a = OpLabel\n"
" OpBranch %end_label\n"
"%take_input_b = OpLabel\n"
" OpBranch %end_label\n"
"%end_label = OpLabel\n"
"%var_ptr = OpPhi "
+ pointerTypeAtLevel[indexLevel] + " "
+ baseANameAtLevel[indexLevel]
+ " %take_input_a "
+ baseBNameAtLevel[indexLevel]
+ " %take_input_b\n";
expectedOutput[0] = selectedInput[baseOffset];
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputC)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// Use OpCopyObject to get variable pointers
{
ComputeShaderSpec spec;
map<string, string> specs;
string opCodeForTests = "opcopyobject";
string name = opCodeForTests + indexLevelNames[indexLevel] + bufferType + selectedInputStr;
specs["extra_types"] = "";
specs["extra_capability"] = extraCap;
specs["input_decorations"] = inputDecorations;
specs["input_variables"] = inputVariables;
specs["input_intermediates"] = inputIntermediates;
specs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
"%in_a_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseANameAtLevel[indexLevel] + "\n"
"%in_b_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseBNameAtLevel[indexLevel] + "\n"
"%var_ptr = OpSelect " + pointerTypeAtLevel[indexLevel] + " " + spirvSelectInputA + " %in_a_copy %in_b_copy\n";
expectedOutput[0] = selectedInput[baseOffset];
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputC)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// Use OpPtrAccessChain to get variable pointers
{
ComputeShaderSpec spec;
map<string, string> specs;
string opCodeForTests = "opptraccesschain";
string name = opCodeForTests + indexLevelNames[indexLevel] + bufferType + selectedInputStr;
specs["extra_types"] = "";
specs["extra_capability"] = extraCap;
specs["input_decorations"] = inputDecorations;
specs["input_variables"] = inputVariables;
specs["input_intermediates"] = inputIntermediates;
specs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputAPtrAccessChain[indexLevel];
specs["b_loc"] = inputBPtrAccessChain[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect "
+ pointerTypeAtLevel[indexLevel] + " "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
expectedOutput[0] = selectedInput[baseOffset];
spec.usesPhysStorageBuffer = physPtrs;
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputC)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
if (!physPtrs)
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
}
}
}
}
void addComplexTypesVariablePointersComputeGroup (tcu::TestCaseGroup* group)
{
addComplexTypesPhysicalOrVariablePointersComputeGroup(group, false);
}
void addComplexTypesPhysicalPointersComputeGroup (tcu::TestCaseGroup* group)
{
addComplexTypesPhysicalOrVariablePointersComputeGroup(group, true);
}
void addNullptrVariablePointersComputeGroup (tcu::TestCaseGroup* group)
{
tcu::TestContext& testCtx = group->getTestContext();
float someFloat = 78;
vector<float> input (1, someFloat);
vector<float> expectedOutput (1, someFloat);
VulkanFeatures requiredFeatures;
// Requires the variable pointers feature.
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
const string decorations (
// Decorations
"OpDecorate %id BuiltIn GlobalInvocationId \n"
"OpDecorate %input DescriptorSet 0 \n"
"OpDecorate %outdata DescriptorSet 0 \n"
"OpDecorate %input Binding 0 \n"
"OpDecorate %outdata Binding 1 \n"
// Set the Block decoration
"OpDecorate %float_struct Block \n"
// Set the Offsets
"OpMemberDecorate %float_struct 0 Offset 0 \n"
);
const string types (
///////////
// TYPES //
///////////
// struct float_struct {
// float x;
// };
"%float_struct = OpTypeStruct %f32 \n"
///////////////////
// POINTER TYPES //
///////////////////
"%float_struct_ptr = OpTypePointer StorageBuffer %float_struct \n"
"%sb_f32ptr = OpTypePointer StorageBuffer %f32 \n"
"%func_f32ptrptr = OpTypePointer Function %sb_f32ptr \n"
///////////////
// CONSTANTS //
///////////////
"%c_bool_true = OpConstantTrue %bool \n"
"%c_i32_0 = OpConstant %i32 0 \n"
"%c_null_ptr = OpConstantNull %sb_f32ptr \n"
///////////////
// VARIABLES //
///////////////
"%id = OpVariable %uvec3ptr Input \n"
"%input = OpVariable %float_struct_ptr StorageBuffer \n"
"%outdata = OpVariable %float_struct_ptr StorageBuffer \n"
);
const StringTemplate shaderTemplate (
"OpCapability Shader\n"
"OpCapability VariablePointers\n"
"OpExtension \"SPV_KHR_variable_pointers\"\n"
"OpExtension \"SPV_KHR_storage_buffer_storage_class\"\n"
"OpMemoryModel Logical GLSL450\n"
"OpEntryPoint GLCompute %main \"main\" %id\n"
"OpExecutionMode %main LocalSize 1 1 1\n"
"OpSource GLSL 430\n"
"OpName %main \"main\"\n"
"OpName %id \"gl_GlobalInvocationID\"\n"
+ decorations
+ string(getComputeAsmCommonTypes())
+ types +
// main function is the entry_point
"%main = OpFunction %void None %voidf\n"
"%label = OpLabel\n"
// Note that the Variable Pointers extension allows creation
// of a pointer variable with storage class of Private or Function.
"%f32_ptr_var = OpVariable %func_f32ptrptr Function %c_null_ptr\n"
"%input_loc = OpAccessChain %sb_f32ptr %input %c_i32_0\n"
"%output_loc = OpAccessChain %sb_f32ptr %outdata %c_i32_0\n"
"${NullptrTestingStrategy}\n"
" OpReturn\n"
" OpFunctionEnd\n");
// f32_ptr_var has been inintialized to NULL.
// Now set it to point to the float variable that holds the input value
{
ComputeShaderSpec spec;
map<string, string> specs;
string name = "opvariable_initialized_null";
specs["NullptrTestingStrategy"] =
" OpStore %f32_ptr_var %input_loc \n"
"%loaded_f32_ptr = OpLoad %sb_f32ptr %f32_ptr_var \n"
"%loaded_f32 = OpLoad %f32 %loaded_f32_ptr \n"
" OpStore %output_loc %loaded_f32 \n";
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(input)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
// Use OpSelect to choose between nullptr and valid pointer. Since we can't dereference nullptr,
// it is forced to always choose the valid pointer.
{
ComputeShaderSpec spec;
map<string, string> specs;
string name = "opselect_null_or_valid_ptr";
specs["NullptrTestingStrategy"] =
"%selected_ptr = OpSelect %sb_f32ptr %c_bool_true %input_loc %c_null_ptr\n"
"%loaded_var = OpLoad %f32 %selected_ptr\n"
"OpStore %output_loc %loaded_var\n";
spec.assembly = shaderTemplate.specialize(specs);
spec.numWorkGroups = IVec3(1, 1, 1);
spec.requestedVulkanFeatures = requiredFeatures;
spec.inputs.push_back(Resource(BufferSp(new Float32Buffer(input)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
spec.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput))));
spec.extensions.push_back("VK_KHR_variable_pointers");
group->addChild(new SpvAsmComputeShaderCase(testCtx, name.c_str(), name.c_str(), spec));
}
}
void addVariablePointersGraphicsGroup (tcu::TestCaseGroup* testGroup)
{
tcu::TestContext& testCtx = testGroup->getTestContext();
de::Random rnd (deStringHash(testGroup->getName()));
map<string, string> fragments;
RGBA defaultColors[4];
vector<string> extensions;
const int seed = testCtx.getCommandLine().getBaseSeed();
const int numMuxes = 100;
const std::string numMuxesStr = "100";
vector<float> inputAFloats (2*numMuxes, 0);
vector<float> inputBFloats (2*numMuxes, 0);
vector<float> inputSFloats (numMuxes, 0);
vector<float> AmuxAOutputFloats (numMuxes, 0);
vector<float> AmuxBOutputFloats (numMuxes, 0);
vector<float> incrAmuxAOutputFloats (numMuxes, 0);
vector<float> incrAmuxBOutputFloats (numMuxes, 0);
VulkanFeatures requiredFeatures;
extensions.push_back("VK_KHR_variable_pointers");
getDefaultColors(defaultColors);
// Each output entry is chosen as follows: ( 0 <= i < numMuxes)
// 1) For tests with one input buffer: output[i] = (s[i] < 0) ? A[2*i] : A[2*i+1];
// 2) For tests with two input buffers: output[i] = (s[i] < 0) ? A[i] : B[i];
fillRandomScalars(rnd, -100.f, 100.f, &inputAFloats[0], 2*numMuxes);
fillRandomScalars(rnd, -100.f, 100.f, &inputBFloats[0], 2*numMuxes);
// We want to guarantee that the S input has some positive and some negative values.
// We choose random negative numbers for the first half, random positive numbers for the second half, and then shuffle.
fillRandomScalars(rnd, -100.f, -1.f , &inputSFloats[0], numMuxes / 2);
fillRandomScalars(rnd, 1.f , 100.f, &inputSFloats[numMuxes / 2], numMuxes / 2);
de::Random(seed).shuffle(inputSFloats.begin(), inputSFloats.end());
for (size_t i = 0; i < numMuxes; ++i)
{
AmuxAOutputFloats[i] = (inputSFloats[i] < 0) ? inputAFloats[2*i] : inputAFloats[2*i+1];
AmuxBOutputFloats[i] = (inputSFloats[i] < 0) ? inputAFloats[i] : inputBFloats[i];
incrAmuxAOutputFloats[i] = (inputSFloats[i] < 0) ? 1 + inputAFloats[2*i] : 1 + inputAFloats[2*i+1];
incrAmuxBOutputFloats[i] = (inputSFloats[i] < 0) ? 1 + inputAFloats[i] : 1 + inputBFloats[i];
}
fragments["extension"] = "OpExtension \"SPV_KHR_variable_pointers\"\n"
"OpExtension \"SPV_KHR_storage_buffer_storage_class\"\n";
const StringTemplate preMain (
"%c_i32_limit = OpConstant %i32 " + numMuxesStr + "\n"
" %sb_f32 = OpTypePointer StorageBuffer %f32\n"
" %ra_f32 = OpTypeRuntimeArray %f32\n"
" %buf = OpTypeStruct %ra_f32\n"
" %sb_buf = OpTypePointer StorageBuffer %buf\n"
" ${ExtraTypes}"
" ${ExtraGlobalScopeVars}"
" %indata_a = OpVariable %sb_buf StorageBuffer\n"
" %indata_b = OpVariable %sb_buf StorageBuffer\n"
" %indata_s = OpVariable %sb_buf StorageBuffer\n"
" %outdata = OpVariable %sb_buf StorageBuffer\n"
" ${ExtraFunctions} ");
const std::string selectorFunction (
// We're going to put the "selector" function here.
// This function type is needed for tests that use OpFunctionCall.
"%selector_func_type = OpTypeFunction %sb_f32 %bool %sb_f32 %sb_f32\n"
"%choose_input_func = OpFunction %sb_f32 None %selector_func_type\n"
"%is_neg_param = OpFunctionParameter %bool\n"
"%first_ptr_param = OpFunctionParameter %sb_f32\n"
"%second_ptr_param = OpFunctionParameter %sb_f32\n"
"%selector_func_begin = OpLabel\n"
"%result_ptr = OpSelect %sb_f32 %is_neg_param %first_ptr_param %second_ptr_param\n"
"OpReturnValue %result_ptr\n"
"OpFunctionEnd\n");
const StringTemplate decoration (
"OpMemberDecorate %buf 0 Offset 0\n"
"OpDecorate %buf Block\n"
"OpDecorate %ra_f32 ArrayStride 4\n"
"OpDecorate %sb_f32 ArrayStride 4\n"
"OpDecorate %indata_a DescriptorSet 0\n"
"OpDecorate %indata_b DescriptorSet 0\n"
"OpDecorate %indata_s DescriptorSet 0\n"
"OpDecorate %outdata DescriptorSet 0\n"
"OpDecorate %indata_a Binding 0\n"
"OpDecorate %indata_b Binding 1\n"
"OpDecorate %indata_s Binding 2\n"
"OpDecorate %outdata Binding 3\n");
const StringTemplate testFunction (
"%test_code = OpFunction %v4f32 None %v4f32_v4f32_function\n"
"%param = OpFunctionParameter %v4f32\n"
"%entry = OpLabel\n"
"${ExtraFunctionScopeVars}"
"%i = OpVariable %fp_i32 Function\n"
"%should_run = OpFunctionCall %bool %isUniqueIdZero\n"
" OpSelectionMerge %end_if None\n"
" OpBranchConditional %should_run %run_test %end_if\n"
"%run_test = OpLabel\n"
" OpStore %i %c_i32_0\n"
" OpBranch %loop\n"
// loop header
"%loop = OpLabel\n"
"%15 = OpLoad %i32 %i\n"
"%lt = OpSLessThan %bool %15 %c_i32_limit\n"
" OpLoopMerge %merge %inc None\n"
" OpBranchConditional %lt %write %merge\n"
// loop body
"%write = OpLabel\n"
"%30 = OpLoad %i32 %i\n"
"%two_i = OpIAdd %i32 %30 %30\n"
"%two_i_plus_1 = OpIAdd %i32 %two_i %c_i32_1\n"
"%loc_s_i = OpAccessChain %sb_f32 %indata_s %c_i32_0 %30\n"
"%loc_a_i = OpAccessChain %sb_f32 %indata_a %c_i32_0 %30\n"
"%loc_b_i = OpAccessChain %sb_f32 %indata_b %c_i32_0 %30\n"
"%loc_a_2i = OpAccessChain %sb_f32 %indata_a %c_i32_0 %two_i\n"
"%loc_a_2i_plus_1 = OpAccessChain %sb_f32 %indata_a %c_i32_0 %two_i_plus_1\n"
"%loc_outdata_i = OpAccessChain %sb_f32 %outdata %c_i32_0 %30\n"
"%val_s_i = OpLoad %f32 %loc_s_i\n"
"%is_neg = OpFOrdLessThan %bool %val_s_i %c_f32_0\n"
// select using a strategy.
"${ResultStrategy}"
// load through the variable pointer
"%mux_output = OpLoad %f32 ${VarPtrName}\n"
// store to the output vector.
" OpStore %loc_outdata_i %mux_output\n"
" OpBranch %inc\n"
// ++i
" %inc = OpLabel\n"
" %37 = OpLoad %i32 %i\n"
" %39 = OpIAdd %i32 %37 %c_i32_1\n"
" OpStore %i %39\n"
" OpBranch %loop\n"
// Return and FunctionEnd
"%merge = OpLabel\n"
" OpBranch %end_if\n"
"%end_if = OpLabel\n"
"OpReturnValue %param\n"
"OpFunctionEnd\n");
const bool singleInputBuffer[] = { true, false };
for (int inputBufferTypeIndex = 0 ; inputBufferTypeIndex < 2; ++inputBufferTypeIndex)
{
const bool isSingleInputBuffer = singleInputBuffer[inputBufferTypeIndex];
const string cap = isSingleInputBuffer ? "OpCapability VariablePointersStorageBuffer\n" : "OpCapability VariablePointers\n";
const vector<float>& expectedOutput = isSingleInputBuffer ? AmuxAOutputFloats : AmuxBOutputFloats;
const vector<float>& expectedIncrOutput = isSingleInputBuffer ? incrAmuxAOutputFloats : incrAmuxBOutputFloats;
const string bufferType = isSingleInputBuffer ? "single_buffer" : "two_buffers";
const string muxInput1 = isSingleInputBuffer ? " %loc_a_2i " : " %loc_a_i ";
const string muxInput2 = isSingleInputBuffer ? " %loc_a_2i_plus_1 " : " %loc_b_i ";
// Set the proper extension features required for the test
if (isSingleInputBuffer)
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS_STORAGEBUFFER;
else
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
// All of the following tests write their results into an output SSBO, therefore they require the following features.
requiredFeatures.coreFeatures.vertexPipelineStoresAndAtomics = DE_TRUE;
requiredFeatures.coreFeatures.fragmentStoresAndAtomics = DE_TRUE;
{ // Variable Pointer Reads (using OpSelect)
GraphicsResources resources;
map<string, string> specs;
string name = "reads_opselect_" + bufferType;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] = "%mux_output_var_ptr = OpSelect %sb_f32 %is_neg" + muxInput1 + muxInput2 + "\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
{ // Variable Pointer Reads (using OpFunctionCall)
GraphicsResources resources;
map<string, string> specs;
string name = "reads_opfunctioncall_" + bufferType;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = selectorFunction;
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] = "%mux_output_var_ptr = OpFunctionCall %sb_f32 %choose_input_func %is_neg" + muxInput1 + muxInput2 + "\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
{ // Variable Pointer Reads (using OpPhi)
GraphicsResources resources;
map<string, string> specs;
string name = "reads_opphi_" + bufferType;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
" OpSelectionMerge %end_label None\n"
" OpBranchConditional %is_neg %take_mux_input_1 %take_mux_input_2\n"
"%take_mux_input_1 = OpLabel\n"
" OpBranch %end_label\n"
"%take_mux_input_2 = OpLabel\n"
" OpBranch %end_label\n"
"%end_label = OpLabel\n"
"%mux_output_var_ptr = OpPhi %sb_f32" + muxInput1 + "%take_mux_input_1" + muxInput2 + "%take_mux_input_2\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
{ // Variable Pointer Reads (using OpCopyObject)
GraphicsResources resources;
map<string, string> specs;
string name = "reads_opcopyobject_" + bufferType;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%mux_input_1_copy = OpCopyObject %sb_f32" + muxInput1 + "\n"
"%mux_input_2_copy = OpCopyObject %sb_f32" + muxInput2 + "\n"
"%mux_output_var_ptr = OpSelect %sb_f32 %is_neg %mux_input_1_copy %mux_input_2_copy\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
{ // Test storing into Private variables.
const char* storageClasses[] = {"Private", "Function"};
for (int classId = 0; classId < 2; ++classId)
{
GraphicsResources resources;
map<string, string> specs;
std::string storageClass = storageClasses[classId];
std::string name = "stores_" + string(de::toLower(storageClass)) + "_" + bufferType;
std::string extraVariable = "%mux_output_copy = OpVariable %sb_f32ptrptr " + storageClass + "\n";
specs["ExtraTypes"] = "%sb_f32ptrptr = OpTypePointer " + storageClass + " %sb_f32\n";
specs["ExtraGlobalScopeVars"] = (classId == 0) ? extraVariable : "";
specs["ExtraFunctionScopeVars"] = (classId == 1) ? extraVariable : "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%opselect_result = OpSelect %sb_f32 %is_neg" + muxInput1 + muxInput2 + "\n"
" OpStore %mux_output_copy %opselect_result\n"
"%mux_output_var_ptr = OpLoad %sb_f32 %mux_output_copy\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
}
{ // Variable Pointer Reads (using OpPtrAccessChain)
GraphicsResources resources;
map<string, string> specs;
std::string name = "reads_opptraccesschain_" + bufferType;
std::string in_1 = isSingleInputBuffer ? " %a_2i_ptr " : " %a_i_ptr ";
std::string in_2 = isSingleInputBuffer ? " %a_2i_plus_1_ptr " : " %b_i_ptr ";
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%a_ptr = OpAccessChain %sb_f32 %indata_a %c_i32_0 %c_i32_0\n"
"%b_ptr = OpAccessChain %sb_f32 %indata_b %c_i32_0 %c_i32_0\n"
"%s_ptr = OpAccessChain %sb_f32 %indata_s %c_i32_0 %c_i32_0\n"
"%out_ptr = OpAccessChain %sb_f32 %outdata %c_i32_0 %c_i32_0\n"
"%a_i_ptr = OpPtrAccessChain %sb_f32 %a_ptr %30\n"
"%b_i_ptr = OpPtrAccessChain %sb_f32 %b_ptr %30\n"
"%s_i_ptr = OpPtrAccessChain %sb_f32 %s_ptr %30\n"
"%a_2i_ptr = OpPtrAccessChain %sb_f32 %a_ptr %two_i\n"
"%a_2i_plus_1_ptr = OpPtrAccessChain %sb_f32 %a_ptr %two_i_plus_1\n"
"%mux_output_var_ptr = OpSelect %sb_f32 %is_neg " + in_1 + in_2 + "\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
fragments["capability"] = cap;
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
{ // Variable Pointer Writes
GraphicsResources resources;
map<string, string> specs;
std::string name = "writes_" + bufferType;
specs["ExtraTypes"] = "";
specs["ExtraGlobalScopeVars"] = "";
specs["ExtraFunctionScopeVars"] = "";
specs["ExtraFunctions"] = "";
specs["VarPtrName"] = "%mux_output_var_ptr";
specs["ResultStrategy"] =
"%mux_output_var_ptr = OpSelect %sb_f32 %is_neg" + muxInput1 + muxInput2 + "\n" +
" %val = OpLoad %f32 %mux_output_var_ptr Aligned 4\n"
" %val_plus_1 = OpFAdd %f32 %val %c_f32_1\n"
" OpStore %mux_output_var_ptr %val_plus_1\n";
fragments["capability"] = cap;
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputAFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputSFloats)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.outputs.push_back(Resource(BufferSp(new Float32Buffer(expectedIncrOutput)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages(name.c_str(), defaultColors, defaultColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
}
}
// Modifies the 'red channel' of the input color to the given float value.
// Returns the modified color.
void getExpectedOutputColor(RGBA (&inputColors)[4], RGBA (&expectedOutputColors)[4], float val)
{
Vec4 inColor0 = inputColors[0].toVec();
Vec4 inColor1 = inputColors[1].toVec();
Vec4 inColor2 = inputColors[2].toVec();
Vec4 inColor3 = inputColors[3].toVec();
inColor0[0] = val;
inColor1[0] = val;
inColor2[0] = val;
inColor3[0] = val;
expectedOutputColors[0] = RGBA(inColor0);
expectedOutputColors[1] = RGBA(inColor1);
expectedOutputColors[2] = RGBA(inColor2);
expectedOutputColors[3] = RGBA(inColor3);
}
void addTwoInputBufferReadOnlyVariablePointersGraphicsGroup (tcu::TestCaseGroup* testGroup)
{
const int numFloatsPerInput = 64;
vector<float> inputA (numFloatsPerInput, 0);
vector<float> inputB (numFloatsPerInput, 0);
deUint32 baseOffset = -1;
VulkanFeatures requiredFeatures;
map<string, string> fragments;
RGBA defaultColors[4];
RGBA expectedColors[4];
vector<string> extensions;
getDefaultColors(defaultColors);
// Set the proper extension features required for the tests.
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
// Set the required extension.
extensions.push_back("VK_KHR_variable_pointers");
// These tests exercise variable pointers into various levels of the following data-structure:
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors. Each vector is 4 floats.
// vec4 y[2]; // array of 2 vectors. Each vector is 4 floats.
// };
//
// struct outer_struct {
// inner_struct r[2][2];
// };
//
// The inner_struct contains 16 floats, and the outer_struct contains 64 floats.
// Therefore the input can be an array of 64 floats.
// Populate the first input (inputA) to contain: {0, 4, ... , 252} / 255.f
// Populate the second input (inputB) to contain: {3, 7, ... , 255} / 255.f
for (size_t i = 0; i < numFloatsPerInput; ++i)
{
inputA[i] = 4*float(i) / 255;
inputB[i] = ((4*float(i)) + 3) / 255;
}
// In the following tests we use variable pointers to point to different types:
// nested structures, matrices of structures, arrays of structures, arrays of vectors, vectors of scalars, and scalars.
// outer_structure.inner_structure[?][?].x[?][?];
// ^ ^ ^ ^ ^ ^ ^
//
// 1. inputA or inputB = nested structure
// 2. inputA.r or inputB.r = matrices of structures
// 3. inputA.r[?] or inputB.r[?] = arrays of structures
// 4. inputA.r[?][?] or inputB.r[?][?] = structures
// 5. inputA.r[?][?].(x|y) or inputB.r[?][?].(x|y) = arrays of vectors
// 6. inputA.r[?][?].(x|y)[?] or inputB.r[?][?].(x|y)[?] = vectors of scalars
// 7. inputA.r[?][?].(x|y)[?][?] or inputB.r[?][?].(x|y)[?][?] = scalars
const int numLevels = 7;
fragments["capability"] = "OpCapability VariablePointers \n";
fragments["extension"] = "OpExtension \"SPV_KHR_variable_pointers\" \n"
"OpExtension \"SPV_KHR_storage_buffer_storage_class\" \n";
const StringTemplate decoration (
// Set the Offsets
"OpMemberDecorate %outer_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 1 Offset 32 \n"
// Set the ArrayStrides
"OpDecorate %arr2_v4float ArrayStride 16 \n"
"OpDecorate %arr2_inner_struct ArrayStride 64 \n"
"OpDecorate %mat2x2_inner_struct ArrayStride 128 \n"
"OpDecorate %mat2x2_ptr ArrayStride 128 \n"
"OpDecorate %sb_buf ArrayStride 256 \n"
"OpDecorate %v4f32_ptr ArrayStride 16 \n"
"OpDecorate %outer_struct Block \n"
"OpDecorate %in_a DescriptorSet 0 \n"
"OpDecorate %in_b DescriptorSet 0 \n"
"OpDecorate %in_a Binding 0 \n"
"OpDecorate %in_b Binding 1 \n"
"OpDecorate %in_a NonWritable \n"
"OpDecorate %in_b NonWritable \n"
);
const StringTemplate preMain (
///////////
// TYPES //
///////////
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors
// vec4 y[2]; // array of 2 vectors
// };
"%arr2_v4float = OpTypeArray %v4f32 %c_u32_2 \n"
"%inner_struct = OpTypeStruct %arr2_v4float %arr2_v4float \n"
// struct outer_struct {
// inner_struct r[2][2];
// };
"%arr2_inner_struct = OpTypeArray %inner_struct %c_u32_2 \n"
"%mat2x2_inner_struct = OpTypeArray %arr2_inner_struct %c_u32_2 \n"
"%outer_struct = OpTypeStruct %mat2x2_inner_struct \n"
///////////////////
// POINTER TYPES //
///////////////////
"%sb_buf = OpTypePointer StorageBuffer %outer_struct \n"
"%mat2x2_ptr = OpTypePointer StorageBuffer %mat2x2_inner_struct \n"
"%arr2_ptr = OpTypePointer StorageBuffer %arr2_inner_struct \n"
"%inner_struct_ptr = OpTypePointer StorageBuffer %inner_struct \n"
"%arr_v4f32_ptr = OpTypePointer StorageBuffer %arr2_v4float \n"
"%v4f32_ptr = OpTypePointer StorageBuffer %v4f32 \n"
"%sb_f32ptr = OpTypePointer StorageBuffer %f32 \n"
///////////////
// VARIABLES //
///////////////
"%in_a = OpVariable %sb_buf StorageBuffer \n"
"%in_b = OpVariable %sb_buf StorageBuffer \n"
///////////////
// CONSTANTS //
///////////////
"%c_bool_true = OpConstantTrue %bool \n"
"%c_bool_false = OpConstantFalse %bool \n"
//////////////////////
// HELPER FUNCTIONS //
//////////////////////
"${helper_functions} \n"
);
const StringTemplate selectorFunctions (
// This selector function returns a variable pointer.
// These functions are used by tests that use OpFunctionCall to obtain the variable pointer.
"%selector_func_type = OpTypeFunction ${selected_type} %bool ${selected_type} ${selected_type}\n"
"%choose_input_func = OpFunction ${selected_type} None %selector_func_type\n"
"%choose_first_param = OpFunctionParameter %bool\n"
"%first_param = OpFunctionParameter ${selected_type}\n"
"%second_param = OpFunctionParameter ${selected_type}\n"
"%selector_func_begin = OpLabel\n"
"%result_ptr = OpSelect ${selected_type} %choose_first_param %first_param %second_param\n"
" OpReturnValue %result_ptr\n"
" OpFunctionEnd\n"
);
const StringTemplate testFunction (
"%test_code = OpFunction %v4f32 None %v4f32_v4f32_function\n"
"%param = OpFunctionParameter %v4f32\n"
"%entry = OpLabel\n"
// Define base pointers for OpPtrAccessChain
"%in_a_matptr = OpAccessChain %mat2x2_ptr %in_a %c_i32_0\n"
"%in_b_matptr = OpAccessChain %mat2x2_ptr %in_b %c_i32_0\n"
// Define the 2 pointers from which we're going to choose one.
"${a_loc} \n"
"${b_loc} \n"
// Choose between the 2 pointers / variable pointers
"${selection_strategy} \n"
// OpAccessChain into the variable pointer until you get to the float.
"%result_loc = OpAccessChain %sb_f32ptr %var_ptr ${remaining_indexes} \n"
// Now load from the result_loc
"%result_val = OpLoad %f32 %result_loc\n"
// Modify the 'RED channel' of the output color to the chosen value
"%output_color = OpCompositeInsert %v4f32 %result_val %param 0 \n"
// Return and FunctionEnd
"OpReturnValue %output_color\n"
"OpFunctionEnd\n");
// When select is 0, the variable pointer should point to a value in the first input (inputA).
// When select is 1, the variable pointer should point to a value in the second input (inputB).
for (int selectInputA = 0; selectInputA < 2; ++selectInputA)
{
const string selectedInputStr = selectInputA ? "first_input" : "second_input";
const string spirvSelectInputA = selectInputA ? "%c_bool_true" : "%c_bool_false";
vector<float>& selectedInput = selectInputA ? inputA : inputB;
// The indexes chosen at each level. At any level, any given offset is exercised.
// The first index is always zero as the outer structure has only 1 member.
const int indexesForLevel[numLevels][6]= {{0, 0, 0, 0, 0, 1},
{0, 1, 0, 1, 0, 2},
{0, 0, 1, 0, 1, 3},
{0, 1, 1, 1, 0, 0},
{0, 0, 0, 1, 1, 1},
{0, 1, 0, 0, 0, 2},
{0, 1, 1, 1, 1, 3}};
const string indexLevelNames[] = {"_outer_struct_", "_matrices_", "_arrays_", "_inner_structs_", "_vec4arr_", "_vec4_", "_float_"};
const string inputALocations[] = { "",
"%a_loc = OpAccessChain %mat2x2_ptr %in_a %c_i32_0",
"%a_loc = OpAccessChain %arr2_ptr %in_a %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %inner_struct_ptr %in_a %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpAccessChain %arr_v4f32_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpAccessChain %v4f32_ptr %in_a %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %sb_f32ptr %in_a %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputBLocations[] = { "",
"%b_loc = OpAccessChain %mat2x2_ptr %in_b %c_i32_0",
"%b_loc = OpAccessChain %arr2_ptr %in_b %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %inner_struct_ptr %in_b %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpAccessChain %arr_v4f32_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpAccessChain %v4f32_ptr %in_b %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %sb_f32ptr %in_b %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputAPtrAccessChain[] = { "",
"%a_loc = OpPtrAccessChain %mat2x2_ptr %in_a_matptr %c_i32_0",
"%a_loc = OpPtrAccessChain %arr2_ptr %in_a_matptr %c_i32_0 %c_i32_0",
"%a_loc = OpPtrAccessChain %inner_struct_ptr %in_a_matptr %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpPtrAccessChain %arr_v4f32_ptr %in_a_matptr %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpPtrAccessChain %v4f32_ptr %in_a_matptr %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %a_loc = OpPtrAccessChain %sb_f32ptr %in_a_matptr %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %a_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%a_loc_arr = OpPtrAccessChain %arr_v4f32_ptr %in_a_matptr %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%a_loc_first_elem = OpAccessChain %v4f32_ptr %a_loc_arr %c_i32_0 "
"%a_loc = OpPtrAccessChain %sb_f32ptr %a_loc_first_elem %c_i32_1 %c_i32_3"};
const string inputBPtrAccessChain[] = { "",
"%b_loc = OpPtrAccessChain %mat2x2_ptr %in_b_matptr %c_i32_0",
"%b_loc = OpPtrAccessChain %arr2_ptr %in_b_matptr %c_i32_0 %c_i32_0",
"%b_loc = OpPtrAccessChain %inner_struct_ptr %in_b_matptr %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpPtrAccessChain %arr_v4f32_ptr %in_b_matptr %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpPtrAccessChain %v4f32_ptr %in_b_matptr %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %b_loc = OpPtrAccessChain %sb_f32ptr %in_b_matptr %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %b_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%b_loc_arr = OpPtrAccessChain %arr_v4f32_ptr %in_b_matptr %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%b_loc_first_elem = OpAccessChain %v4f32_ptr %b_loc_arr %c_i32_0 "
"%b_loc = OpPtrAccessChain %sb_f32ptr %b_loc_first_elem %c_i32_1 %c_i32_3"};
const string remainingIndexesAtLevel[]= {"%c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_2",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_3",
"%c_i32_1 %c_i32_0 %c_i32_0",
"%c_i32_1 %c_i32_1",
"%c_i32_2",
""};
const string pointerTypeAtLevel[] = {"%sb_buf", "%mat2x2_ptr", "%arr2_ptr", "%inner_struct_ptr", "%arr_v4f32_ptr", "%v4f32_ptr", "%sb_f32ptr"};
const string baseANameAtLevel[] = {"%in_a", "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc"};
const string baseBNameAtLevel[] = {"%in_b", "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc"};
for (int indexLevel = 0; indexLevel < numLevels; ++indexLevel)
{
// index into the outer structure must be zero since the outer structure has only 1 member.
DE_ASSERT(indexesForLevel[indexLevel][0] == 0);
baseOffset = getBaseOffset(indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
// Use OpSelect to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opselect";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect " +
pointerTypeAtLevel[indexLevel] + " " +
spirvSelectInputA + " " +
baseANameAtLevel[indexLevel] + " " +
baseBNameAtLevel[indexLevel] + "\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, selectedInput[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpCopyObject to get variable pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opcopyobject";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
"%in_a_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseANameAtLevel[indexLevel] + "\n"
"%in_b_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseBNameAtLevel[indexLevel] + "\n"
"%var_ptr = OpSelect " + pointerTypeAtLevel[indexLevel] + " " + spirvSelectInputA + " %in_a_copy %in_b_copy\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, selectedInput[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpPhi to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opphi";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
" OpSelectionMerge %end_label None\n"
" OpBranchConditional " + spirvSelectInputA + " %take_input_a %take_input_b\n"
"%take_input_a = OpLabel\n"
" OpBranch %end_label\n"
"%take_input_b = OpLabel\n"
" OpBranch %end_label\n"
"%end_label = OpLabel\n"
"%var_ptr = OpPhi "
+ pointerTypeAtLevel[indexLevel] + " "
+ baseANameAtLevel[indexLevel]
+ " %take_input_a "
+ baseBNameAtLevel[indexLevel]
+ " %take_input_b\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, selectedInput[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpFunctionCall to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> functionSpecs;
map<string, string> specs;
string opCodeForTests = "opfunctioncall";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
functionSpecs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["helper_functions"] = selectorFunctions.specialize(functionSpecs);
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpFunctionCall "
+ pointerTypeAtLevel[indexLevel]
+ " %choose_input_func "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, selectedInput[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpPtrAccessChain to get variable pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opptraccesschain";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputAPtrAccessChain[indexLevel];
specs["b_loc"] = inputBPtrAccessChain[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect "
+ pointerTypeAtLevel[indexLevel] + " "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputA)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputB)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, selectedInput[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
}
}
}
void addSingleInputBufferReadOnlyVariablePointersGraphicsGroup (tcu::TestCaseGroup* testGroup)
{
const int numFloatsPerInnerStruct = 64;
vector<float> inputBuffer (2 * numFloatsPerInnerStruct, 0);
deUint32 baseOffset = -1;
VulkanFeatures requiredFeatures;
map<string, string> fragments;
RGBA defaultColors[4];
RGBA expectedColors[4];
vector<string> extensions;
// Set the proper extension features required for the tests.
// The following tests use variable pointers confined withing a single buffer.
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS_STORAGEBUFFER;
// Set the required extension.
extensions.push_back("VK_KHR_variable_pointers");
getDefaultColors(defaultColors);
// These tests exercise variable pointers into various levels of the following data-structure:
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors. Each vector is 4 floats.
// vec4 y[2]; // array of 2 vectors. Each vector is 4 floats.
// };
//
// struct outer_struct {
// inner_struct r[2][2];
// };
//
// struct input_buffer {
// outer_struct a;
// outer_struct b;
// }
//
// The inner_struct contains 16 floats, and the outer_struct contains 64 floats.
// Therefore the input_buffer can be an array of 128 floats.
// Populate input_buffer's first member (a) to contain: {0, 4, ... , 252} / 255.f
// Populate input_buffer's second member (b) to contain: {3, 7, ... , 255} / 255.f
for (size_t i = 0; i < numFloatsPerInnerStruct; ++i)
{
inputBuffer[i] = 4*float(i) / 255;
inputBuffer[i + numFloatsPerInnerStruct] = ((4*float(i)) + 3) / 255;
}
// In the following tests we use variable pointers to point to different types:
// nested structures, matrices of structures, arrays of structures, arrays of vectors, vectors of scalars, and scalars.
// outer_struct.inner_struct[?][?].x[?][?];
// ^ ^ ^ ^ ^ ^ ^
//
// 1. inputBuffer.a or inputBuffer.b = nested structure
// 2. inputBuffer.a.r or inputBuffer.b.r = matrices of structures
// 3. inputBuffer.a.r[?] or inputBuffer.b.r[?] = arrays of structures
// 4. inputBuffer.a.r[?][?] or inputBuffer.b.r[?][?] = structures
// 5. inputBuffer.a.r[?][?].(x|y) or inputBuffer.b.r[?][?].(x|y) = arrays of vectors
// 6. inputBuffer.a.r[?][?].(x|y)[?] or inputBuffer.b.r[?][?].(x|y)[?] = vectors of scalars
// 7. inputBuffer.a.r[?][?].(x|y)[?][?] or inputBuffer.b.r[?][?].(x|y)[?][?] = scalars
const int numLevels = 7;
fragments["capability"] = "OpCapability VariablePointersStorageBuffer \n";
fragments["extension"] = "OpExtension \"SPV_KHR_variable_pointers\" \n"
"OpExtension \"SPV_KHR_storage_buffer_storage_class\" \n";
const StringTemplate decoration (
// Set the ArrayStrides
"OpDecorate %arr2_v4float ArrayStride 16 \n"
"OpDecorate %arr2_inner_struct ArrayStride 64 \n"
"OpDecorate %mat2x2_inner_struct ArrayStride 128 \n"
"OpDecorate %outer_struct_ptr ArrayStride 256 \n"
"OpDecorate %v4f32_ptr ArrayStride 16 \n"
// Set the Offsets
"OpMemberDecorate %input_buffer 0 Offset 0 \n"
"OpMemberDecorate %input_buffer 1 Offset 256 \n"
"OpMemberDecorate %outer_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 0 Offset 0 \n"
"OpMemberDecorate %inner_struct 1 Offset 32 \n"
"OpDecorate %input_buffer Block \n"
"OpDecorate %input DescriptorSet 0 \n"
"OpDecorate %input Binding 0 \n"
"OpDecorate %input NonWritable \n"
);
const StringTemplate preMain (
///////////
// TYPES //
///////////
// struct struct inner_struct {
// vec4 x[2]; // array of 2 vectors
// vec4 y[2]; // array of 2 vectors
// };
"%arr2_v4float = OpTypeArray %v4f32 %c_u32_2 \n"
"%inner_struct = OpTypeStruct %arr2_v4float %arr2_v4float \n"
// struct outer_struct {
// inner_struct r[2][2];
// };
"%arr2_inner_struct = OpTypeArray %inner_struct %c_u32_2 \n"
"%mat2x2_inner_struct = OpTypeArray %arr2_inner_struct %c_u32_2 \n"
"%outer_struct = OpTypeStruct %mat2x2_inner_struct \n"
// struct input_buffer {
// outer_struct a;
// outer_struct b;
// }
"%input_buffer = OpTypeStruct %outer_struct %outer_struct \n"
///////////////////
// POINTER TYPES //
///////////////////
"%input_buffer_ptr = OpTypePointer StorageBuffer %input_buffer \n"
"%outer_struct_ptr = OpTypePointer StorageBuffer %outer_struct \n"
"%mat2x2_ptr = OpTypePointer StorageBuffer %mat2x2_inner_struct \n"
"%arr2_ptr = OpTypePointer StorageBuffer %arr2_inner_struct \n"
"%inner_struct_ptr = OpTypePointer StorageBuffer %inner_struct \n"
"%arr_v4f32_ptr = OpTypePointer StorageBuffer %arr2_v4float \n"
"%v4f32_ptr = OpTypePointer StorageBuffer %v4f32 \n"
"%sb_f32ptr = OpTypePointer StorageBuffer %f32 \n"
///////////////
// VARIABLES //
///////////////
"%input = OpVariable %input_buffer_ptr StorageBuffer \n"
///////////////
// CONSTANTS //
///////////////
"%c_bool_true = OpConstantTrue %bool \n"
"%c_bool_false = OpConstantFalse %bool \n"
//////////////////////
// HELPER FUNCTIONS //
//////////////////////
"${helper_functions} \n"
);
const StringTemplate selectorFunctions (
// These selector functions return variable pointers.
// These functions are used by tests that use OpFunctionCall to obtain the variable pointer
"%selector_func_type = OpTypeFunction ${selected_type} %bool ${selected_type} ${selected_type}\n"
"%choose_input_func = OpFunction ${selected_type} None %selector_func_type\n"
"%choose_first_param = OpFunctionParameter %bool\n"
"%first_param = OpFunctionParameter ${selected_type}\n"
"%second_param = OpFunctionParameter ${selected_type}\n"
"%selector_func_begin = OpLabel\n"
"%result_ptr = OpSelect ${selected_type} %choose_first_param %first_param %second_param\n"
"OpReturnValue %result_ptr\n"
"OpFunctionEnd\n"
);
const StringTemplate testFunction (
"%test_code = OpFunction %v4f32 None %v4f32_v4f32_function\n"
"%param = OpFunctionParameter %v4f32\n"
"%entry = OpLabel\n"
// Here are the 2 nested structures:
"%in_a = OpAccessChain %outer_struct_ptr %input %c_i32_0\n"
"%in_b = OpAccessChain %outer_struct_ptr %input %c_i32_1\n"
// Define the 2 pointers from which we're going to choose one.
"${a_loc} \n"
"${b_loc} \n"
// Choose between the 2 pointers / variable pointers
"${selection_strategy} \n"
// OpAccessChain into the variable pointer until you get to the float.
"%result_loc = OpAccessChain %sb_f32ptr %var_ptr ${remaining_indexes} \n"
// Now load from the result_loc
"%result_val = OpLoad %f32 %result_loc\n"
// Modify the 'RED channel' of the output color to the chosen value
"%output_color = OpCompositeInsert %v4f32 %result_val %param 0 \n"
// Return and FunctionEnd
"OpReturnValue %output_color\n"
"OpFunctionEnd\n");
// When select is 0, the variable pointer should point to a value in the first input_buffer member (a).
// When select is 1, the variable pointer should point to a value in the second input_buffer member (b).
// Since the 2 members of the input_buffer (a and b) are of type outer_struct, we can conveniently use
// the same indexing scheme that we used for the 2-input-buffer tests.
for (int selectInputA = 0; selectInputA < 2; ++selectInputA)
{
const string selectedInputStr = selectInputA ? "first_input" : "second_input";
const string spirvSelectInputA = selectInputA ? "%c_bool_true" : "%c_bool_false";
const int outerStructIndex = selectInputA ? 0 : 1;
// The indexes chosen at each level. At any level, any given offset is exercised.
// outerStructIndex is 0 for member (a) and 1 for member (b).
const int indexesForLevel[numLevels][6]= {{outerStructIndex, 0, 0, 0, 0, 1},
{outerStructIndex, 1, 0, 1, 0, 2},
{outerStructIndex, 0, 1, 0, 1, 3},
{outerStructIndex, 1, 1, 1, 0, 0},
{outerStructIndex, 0, 0, 1, 1, 1},
{outerStructIndex, 1, 0, 0, 0, 2},
{outerStructIndex, 1, 1, 1, 1, 3}};
const string indexLevelNames[] = {"_outer_struct_", "_matrices_", "_arrays_", "_inner_structs_", "_vec4arr_", "_vec4_", "_float_"};
const string inputALocations[] = { "",
"%a_loc = OpAccessChain %mat2x2_ptr %in_a %c_i32_0",
"%a_loc = OpAccessChain %arr2_ptr %in_a %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %inner_struct_ptr %in_a %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpAccessChain %arr_v4f32_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpAccessChain %v4f32_ptr %in_a %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%a_loc = OpAccessChain %sb_f32ptr %in_a %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputBLocations[] = { "",
"%b_loc = OpAccessChain %mat2x2_ptr %in_b %c_i32_0",
"%b_loc = OpAccessChain %arr2_ptr %in_b %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %inner_struct_ptr %in_b %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpAccessChain %arr_v4f32_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpAccessChain %v4f32_ptr %in_b %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
"%b_loc = OpAccessChain %sb_f32ptr %in_b %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3"};
const string inputAPtrAccessChain[] = { "",
"%a_loc = OpPtrAccessChain %mat2x2_ptr %in_a %c_i32_0 %c_i32_0",
"%a_loc = OpPtrAccessChain %arr2_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_0",
"%a_loc = OpPtrAccessChain %inner_struct_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1",
"%a_loc = OpPtrAccessChain %arr_v4f32_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%a_loc = OpPtrAccessChain %v4f32_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %a_loc = OpPtrAccessChain %sb_f32ptr %in_a %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %a_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%a_loc_arr = OpPtrAccessChain %arr_v4f32_ptr %in_a %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%a_loc_first_elem = OpAccessChain %v4f32_ptr %a_loc_arr %c_i32_0 "
"%a_loc = OpPtrAccessChain %sb_f32ptr %a_loc_first_elem %c_i32_1 %c_i32_3"};
const string inputBPtrAccessChain[] = { "",
"%b_loc = OpPtrAccessChain %mat2x2_ptr %in_b %c_i32_0 %c_i32_0",
"%b_loc = OpPtrAccessChain %arr2_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_0",
"%b_loc = OpPtrAccessChain %inner_struct_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1",
"%b_loc = OpPtrAccessChain %arr_v4f32_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%b_loc = OpPtrAccessChain %v4f32_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_0 %c_i32_0",
// Next case emulates:
// %b_loc = OpPtrAccessChain %sb_f32ptr %in_b %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_1 %c_i32_3
// But rewrite it to exercise OpPtrAccessChain with a non-zero first index:
// %b_loc_arr is a pointer to an array that we want to index with 1.
// But instead of just using OpAccessChain with first index 1, use OpAccessChain with index 0 to
// get a pointer to the first element, then send that into OpPtrAccessChain with index 1.
"%b_loc_arr = OpPtrAccessChain %arr_v4f32_ptr %in_b %c_i32_0 %c_i32_0 %c_i32_1 %c_i32_1 %c_i32_1 "
"%b_loc_first_elem = OpAccessChain %v4f32_ptr %b_loc_arr %c_i32_0 "
"%b_loc = OpPtrAccessChain %sb_f32ptr %b_loc_first_elem %c_i32_1 %c_i32_3"};
const string remainingIndexesAtLevel[]= {"%c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_0 %c_i32_1",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_0 %c_i32_2",
"%c_i32_1 %c_i32_0 %c_i32_1 %c_i32_3",
"%c_i32_1 %c_i32_0 %c_i32_0",
"%c_i32_1 %c_i32_1",
"%c_i32_2",
""};
const string pointerTypeAtLevel[] = {"%outer_struct_ptr", "%mat2x2_ptr", "%arr2_ptr", "%inner_struct_ptr", "%arr_v4f32_ptr", "%v4f32_ptr", "%sb_f32ptr"};
const string baseANameAtLevel[] = {"%in_a", "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc", "%a_loc"};
const string baseBNameAtLevel[] = {"%in_b", "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc", "%b_loc"};
for (int indexLevel = 0; indexLevel < numLevels; ++indexLevel)
{
// Use OpSelect to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opselect";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect " +
pointerTypeAtLevel[indexLevel] + " " +
spirvSelectInputA + " " +
baseANameAtLevel[indexLevel] + " " +
baseBNameAtLevel[indexLevel] + "\n";
baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBuffer)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, inputBuffer[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpCopyObject to get variable pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opcopyobject";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
"%in_a_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseANameAtLevel[indexLevel] + "\n"
"%in_b_copy = OpCopyObject " + pointerTypeAtLevel[indexLevel] + " " + baseBNameAtLevel[indexLevel] + "\n"
"%var_ptr = OpSelect " + pointerTypeAtLevel[indexLevel] + " " + spirvSelectInputA + " %in_a_copy %in_b_copy\n";
baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBuffer)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, inputBuffer[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpPhi to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opphi";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] =
" OpSelectionMerge %end_label None\n"
" OpBranchConditional " + spirvSelectInputA + " %take_input_a %take_input_b\n"
"%take_input_a = OpLabel\n"
" OpBranch %end_label\n"
"%take_input_b = OpLabel\n"
" OpBranch %end_label\n"
"%end_label = OpLabel\n"
"%var_ptr = OpPhi "
+ pointerTypeAtLevel[indexLevel] + " "
+ baseANameAtLevel[indexLevel]
+ " %take_input_a "
+ baseBNameAtLevel[indexLevel]
+ " %take_input_b\n";
baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBuffer)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, inputBuffer[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpFunctionCall to choose between 2 pointers
{
GraphicsResources resources;
map<string, string> functionSpecs;
map<string, string> specs;
string opCodeForTests = "opfunctioncall";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
//string selectedType = "%mat2x2_ptr";
functionSpecs["selected_type"] = pointerTypeAtLevel[indexLevel];
specs["helper_functions"] = selectorFunctions.specialize(functionSpecs);
specs["select_inputA"] = spirvSelectInputA;
specs["a_loc"] = inputALocations[indexLevel];
specs["b_loc"] = inputBLocations[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpFunctionCall "
+ pointerTypeAtLevel[indexLevel]
+ " %choose_input_func "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBuffer)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, inputBuffer[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpPtrAccessChain to get variable pointers
{
GraphicsResources resources;
map<string, string> specs;
string opCodeForTests = "opptraccesschain";
string name = opCodeForTests + indexLevelNames[indexLevel] + selectedInputStr;
specs["select_inputA"] = spirvSelectInputA;
specs["helper_functions"] = "";
specs["a_loc"] = inputAPtrAccessChain[indexLevel];
specs["b_loc"] = inputBPtrAccessChain[indexLevel];
specs["remaining_indexes"] = remainingIndexesAtLevel[indexLevel];
specs["selection_strategy"] = "%var_ptr = OpSelect "
+ pointerTypeAtLevel[indexLevel] + " "
+ spirvSelectInputA + " "
+ baseANameAtLevel[indexLevel] + " "
+ baseBNameAtLevel[indexLevel] + "\n";
baseOffset = getBaseOffsetForSingleInputBuffer(indexesForLevel[indexLevel][0],
indexesForLevel[indexLevel][1],
indexesForLevel[indexLevel][2],
indexesForLevel[indexLevel][3],
indexesForLevel[indexLevel][4],
indexesForLevel[indexLevel][5]);
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(inputBuffer)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
getExpectedOutputColor(defaultColors, expectedColors, inputBuffer[baseOffset]);
createTestsForAllStages(name.c_str(), defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
}
}
}
void addNullptrVariablePointersGraphicsGroup (tcu::TestCaseGroup* testGroup)
{
float someFloat = 78 / 255.f;
vector<float> input (1, someFloat);
vector<float> expectedOutput (1, someFloat);
VulkanFeatures requiredFeatures;
map<string, string> fragments;
RGBA defaultColors[4];
RGBA expectedColors[4];
vector<string> extensions;
getDefaultColors(defaultColors);
getExpectedOutputColor(defaultColors, expectedColors, someFloat);
// Set the required extension.
extensions.push_back("VK_KHR_variable_pointers");
// Requires the variable pointers feature.
requiredFeatures.extVariablePointers = EXTVARIABLEPOINTERSFEATURES_VARIABLE_POINTERS;
fragments["capability"] = "OpCapability VariablePointers \n";
fragments["extension"] = "OpExtension \"SPV_KHR_variable_pointers\" \n"
"OpExtension \"SPV_KHR_storage_buffer_storage_class\" \n";
const StringTemplate decoration (
// Decorations
"OpDecorate %input DescriptorSet 0 \n"
"OpDecorate %input Binding 0 \n"
"OpDecorate %input NonWritable \n"
// Set the Block decoration
"OpDecorate %float_struct Block \n"
// Set the Offsets
"OpMemberDecorate %float_struct 0 Offset 0 \n"
);
const StringTemplate preMain (
// struct float_struct {
// float x;
// };
"%float_struct = OpTypeStruct %f32 \n"
// POINTER TYPES
"%float_struct_ptr = OpTypePointer StorageBuffer %float_struct \n"
"%sb_f32ptr = OpTypePointer StorageBuffer %f32 \n"
"%func_f32ptrptr = OpTypePointer Function %sb_f32ptr \n"
// CONSTANTS
"%c_bool_true = OpConstantTrue %bool \n"
"%c_null_ptr = OpConstantNull %sb_f32ptr \n"
// VARIABLES
"%input = OpVariable %float_struct_ptr StorageBuffer \n"
);
const StringTemplate testFunction (
"%test_code = OpFunction %v4f32 None %v4f32_v4f32_function\n"
"%param = OpFunctionParameter %v4f32\n"
"%entry = OpLabel\n"
// Note that the Variable Pointers extension allows creation
// of a pointer variable with storage class of Private or Function.
"%f32_ptr_var = OpVariable %func_f32ptrptr Function %c_null_ptr\n"
"%input_loc = OpAccessChain %sb_f32ptr %input %c_i32_0\n"
// Null testing strategy
"${NullptrTestingStrategy}\n"
// Modify the 'RED channel' of the output color to the chosen value
"%output_color = OpCompositeInsert %v4f32 %result_val %param 0 \n"
// Return and FunctionEnd
"OpReturnValue %output_color\n"
"OpFunctionEnd\n");
// f32_ptr_var has been inintialized to NULL.
// Now set it to the input variable and return it as output
{
GraphicsResources resources;
map<string, string> specs;
specs["NullptrTestingStrategy"] =
" OpStore %f32_ptr_var %input_loc \n"
"%loaded_f32_ptr = OpLoad %sb_f32ptr %f32_ptr_var \n"
"%result_val = OpLoad %f32 %loaded_f32_ptr \n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(input)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages("opvariable_initialized_null", defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
// Use OpSelect to choose between nullptr and a valid pointer. Since we can't dereference nullptr,
// it is forced to always choose the valid pointer.
{
GraphicsResources resources;
map<string, string> specs;
specs["NullptrTestingStrategy"] = "%selected_ptr = OpSelect %sb_f32ptr %c_bool_true %input_loc %c_null_ptr\n"
"%result_val = OpLoad %f32 %selected_ptr\n";
fragments["decoration"] = decoration.specialize(specs);
fragments["pre_main"] = preMain.specialize(specs);
fragments["testfun"] = testFunction.specialize(specs);
resources.inputs.push_back(Resource(BufferSp(new Float32Buffer(input)), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
createTestsForAllStages("opselect_null_or_valid_ptr", defaultColors, expectedColors, fragments, resources, extensions, testGroup, requiredFeatures);
}
}
} // anonymous
tcu::TestCaseGroup* createVariablePointersComputeGroup (tcu::TestContext& testCtx)
{
de::MovePtr<tcu::TestCaseGroup> group (new tcu::TestCaseGroup(testCtx, "variable_pointers", "Compute tests for SPV_KHR_variable_pointers extension"));
addTestGroup(group.get(), "compute", "Test the variable pointer extension using a compute shader", addVariablePointersComputeGroup);
addTestGroup(group.get(),
"complex_types_compute",
"Testing Variable Pointers pointing to various types in different input buffers",
addComplexTypesVariablePointersComputeGroup);
addTestGroup(group.get(),
"nullptr_compute",
"Test the usage of nullptr using the variable pointers extension in a compute shader",
addNullptrVariablePointersComputeGroup);
return group.release();
}
tcu::TestCaseGroup* createPhysicalPointersComputeGroup (tcu::TestContext& testCtx)
{
de::MovePtr<tcu::TestCaseGroup> group (new tcu::TestCaseGroup(testCtx, "physical_pointers", "Compute tests for SPV_EXT_physical_storage_buffer extension"));
addTestGroup(group.get(), "compute", "Test the physical storage buffer extension using a compute shader", addPhysicalPointersComputeGroup);
addTestGroup(group.get(),
"complex_types_compute",
"Testing physical pointers pointing to various types in different input buffers",
addComplexTypesPhysicalPointersComputeGroup);
return group.release();
}
tcu::TestCaseGroup* createVariablePointersGraphicsGroup (tcu::TestContext& testCtx)
{
de::MovePtr<tcu::TestCaseGroup> group (new tcu::TestCaseGroup(testCtx, "variable_pointers", "Graphics tests for SPV_KHR_variable_pointers extension"));
addTestGroup(group.get(), "graphics", "Testing Variable Pointers in graphics pipeline", addVariablePointersGraphicsGroup);
addTestGroup(group.get(),
"multi_buffer_read_only_graphics",
"Testing Variable Pointers pointing to different input buffers in graphics pipeline (no SSBO writes)",
addTwoInputBufferReadOnlyVariablePointersGraphicsGroup);
addTestGroup(group.get(),
"single_buffer_read_only_graphics",
"Testing Variable Pointers confined to a single input buffer in graphics pipeline (no SSBO writes)",
addSingleInputBufferReadOnlyVariablePointersGraphicsGroup);
addTestGroup(group.get(),
"nullptr_graphics",
"Test the usage of nullptr using the variable pointers extension in graphics pipeline",
addNullptrVariablePointersGraphicsGroup);
return group.release();
}
} // SpirVAssembly
} // vkt