external/vulkancts/modules/vulkan/subgroups/vktSubgroupsBallotMasksTests.cpp - third_party/vulkan-cts - Git at Google

 /*------------------------------------------------------------------------
  * Vulkan Conformance Tests
  * ------------------------
  *
  * Copyright (c) 2019 The Khronos Group Inc.
  * Copyright (c) 2019 Valve Corporation.
  *
  * 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 Subgroups Tests
  */ /*--------------------------------------------------------------------*/

 #include "vktSubgroupsBallotMasksTests.hpp"
 #include "vktSubgroupsTestsUtils.hpp"

 #include <string>
 #include <vector>

 using namespace tcu;
 using namespace std;
 using namespace vk;
 using namespace vkt;

 namespace
 {

 enum MaskType
 {
 	MASKTYPE_EQ = 0,
 	MASKTYPE_GE,
 	MASKTYPE_GT,
 	MASKTYPE_LE,
 	MASKTYPE_LT,
 	MASKTYPE_LAST
 };

 static bool checkVertexPipelineStages(const void* internalData, std::vector<const void*> datas,
 									  deUint32 width, deUint32)
 {
 	DE_UNREF(internalData);
 	return vkt::subgroups::check(datas, width, 0xf);
 }

 static bool checkCompute(const void* internalData, std::vector<const void*> datas,
 						 const deUint32 numWorkgroups[3], const deUint32 localSize[3],
 						 deUint32)
 {
 	DE_UNREF(internalData);
 	return vkt::subgroups::checkCompute(datas, numWorkgroups, localSize, 0xf);
 }

 std::string getMaskTypeName(int maskType)
 {
 	switch (maskType)
 	{
 	default:
 		DE_FATAL("Unsupported mask type");
 		return "";
 	case MASKTYPE_EQ:
 		return "gl_SubGroupEqMaskARB";
 	case MASKTYPE_GE:
 		return "gl_SubGroupGeMaskARB";
 	case MASKTYPE_GT:
 		return "gl_SubGroupGtMaskARB";
 	case MASKTYPE_LE:
 		return "gl_SubGroupLeMaskARB";
 	case MASKTYPE_LT:
 		return "gl_SubGroupLtMaskARB";
 	}
 }


 struct CaseDefinition
 {
 	int					maskType;
 	VkShaderStageFlags	shaderStage;
 	de::SharedPtr<bool>	geometryPointSizeSupported;
 	deBool				requiredSubgroupSize;
 };

 std::string getBodySource(CaseDefinition caseDef)
 {
 	std::ostringstream bdy;

 	bdy << "uint64_t value = " << getMaskTypeName(caseDef.maskType) << ";\n";
 	bdy << "bool temp = true;\n";

 	switch(caseDef.maskType)
 	{
 	case MASKTYPE_EQ:
 		bdy << "uint64_t mask = uint64_t(1) << gl_SubGroupInvocationARB;\n";
 		bdy << "temp = (value & mask) != 0;\n";
 		break;
 	case MASKTYPE_GE:
 		bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
 		bdy << "  uint64_t mask = uint64_t(1) << i;\n";
 		bdy << "  if (i >= gl_SubGroupInvocationARB && (value & mask) == 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "  if (i < gl_SubGroupInvocationARB && (value & mask) != 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "};\n";
 		break;
 	case MASKTYPE_GT:
 		bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
 		bdy << "  uint64_t mask = uint64_t(1) << i;\n";
 		bdy << "  if (i > gl_SubGroupInvocationARB && (value & mask) == 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "  if (i <= gl_SubGroupInvocationARB && (value & mask) != 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "};\n";
 		break;
 	case MASKTYPE_LE:
 		bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
 		bdy << "  uint64_t mask = uint64_t(1) << i;\n";
 		bdy << "  if (i <= gl_SubGroupInvocationARB && (value & mask) == 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "  if (i > gl_SubGroupInvocationARB && (value & mask) != 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "};\n";
 		break;
 	case MASKTYPE_LT:
 		bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
 		bdy << "  uint64_t mask = uint64_t(1) << i;\n";
 		bdy << "  if (i < gl_SubGroupInvocationARB && (value & mask) == 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "  if (i >= gl_SubGroupInvocationARB && (value & mask) != 0)\n";
 		bdy << "     temp = false;\n";
 		bdy << "};\n";
 		break;
 	}

 	bdy << "uint tempResult = temp ? 0xf : 0x2;\n";
 	return bdy.str();
 }

 void initFrameBufferPrograms(SourceCollections& programCollection, CaseDefinition caseDef)
 {
 	const vk::ShaderBuildOptions	buildOptions	(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);

 	subgroups::setFragmentShaderFrameBuffer(programCollection);

 	if (VK_SHADER_STAGE_VERTEX_BIT != caseDef.shaderStage)
 		subgroups::setVertexShaderFrameBuffer(programCollection);

 	std::string bdyStr = getBodySource(caseDef);

 	if (VK_SHADER_STAGE_VERTEX_BIT == caseDef.shaderStage)
 	{
 		std::ostringstream				vertex;
 		vertex << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
 			<< "#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			<< "layout(location = 0) in highp vec4 in_position;\n"
 			<< "layout(location = 0) out float out_color;\n"
 			<< "\n"
 			<< "void main (void)\n"
 			<< "{\n"
 			<< bdyStr
 			<< "  out_color = float(tempResult);\n"
 			<< "  gl_Position = in_position;\n"
 			<< "  gl_PointSize = 1.0f;\n"
 			<< "}\n";
 		programCollection.glslSources.add("vert")
 			<< glu::VertexSource(vertex.str()) << buildOptions;
 	}
 	else if (VK_SHADER_STAGE_GEOMETRY_BIT == caseDef.shaderStage)
 	{
 		std::ostringstream geometry;

 		geometry << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
 			<< "#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			<< "layout(points) in;\n"
 			<< "layout(points, max_vertices = 1) out;\n"
 			<< "layout(location = 0) out float out_color;\n"
 			<< "void main (void)\n"
 			<< "{\n"
 			<< bdyStr
 			<< "  out_color = float(tempResult);\n"
 			<< "  gl_Position = gl_in[0].gl_Position;\n"
 			<< (*caseDef.geometryPointSizeSupported ? "  gl_PointSize = gl_in[0].gl_PointSize;\n" : "")
 			<< "  EmitVertex();\n"
 			<< "  EndPrimitive();\n"
 			<< "}\n";

 		programCollection.glslSources.add("geometry")
 			<< glu::GeometrySource(geometry.str()) << buildOptions;
 	}
 	else if (VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT == caseDef.shaderStage)
 	{
 		std::ostringstream controlSource;

 		controlSource << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
 			<< "#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			<< "layout(vertices = 2) out;\n"
 			<< "layout(location = 0) out float out_color[];\n"
 			<< "\n"
 			<< "void main (void)\n"
 			<< "{\n"
 			<< "  if (gl_InvocationID == 0)\n"
 			<< "  {\n"
 			<< "    gl_TessLevelOuter[0] = 1.0f;\n"
 			<< "    gl_TessLevelOuter[1] = 1.0f;\n"
 			<< "  }\n"
 			<< bdyStr
 			<< "  out_color[gl_InvocationID ] = float(tempResult);\n"
 			<< "  gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
 			<< "}\n";

 		programCollection.glslSources.add("tesc")
 			<< glu::TessellationControlSource(controlSource.str()) << buildOptions;
 		subgroups::setTesEvalShaderFrameBuffer(programCollection);
 	}
 	else if (VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT == caseDef.shaderStage)
 	{
 		std::ostringstream evaluationSource;
 		evaluationSource << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
 			<< "#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			<< "layout(isolines, equal_spacing, ccw ) in;\n"
 			<< "layout(location = 0) out float out_color;\n"
 			<< "void main (void)\n"
 			<< "{\n"
 			<< bdyStr
 			<< "  out_color  = float(tempResult);\n"
 			<< "  gl_Position = mix(gl_in[0].gl_Position, gl_in[1].gl_Position, gl_TessCoord.x);\n"
 			<< "}\n";

 		subgroups::setTesCtrlShaderFrameBuffer(programCollection);
 		programCollection.glslSources.add("tese")
 			<< glu::TessellationEvaluationSource(evaluationSource.str()) << buildOptions;
 	}
 	else
 	{
 		DE_FATAL("Unsupported shader stage");
 	}
 }

 void initPrograms(SourceCollections& programCollection, CaseDefinition caseDef)
 {
 	std::string bdyStr = getBodySource(caseDef);

 	if (VK_SHADER_STAGE_COMPUTE_BIT == caseDef.shaderStage)
 	{
 		std::ostringstream src;

 		src << "#version 450\n"
 			<< "#extension GL_ARB_shader_ballot: enable\n"
 			<< "#extension GL_ARB_gpu_shader_int64: enable\n"
 			<< "layout (local_size_x_id = 0, local_size_y_id = 1, "
 			"local_size_z_id = 2) in;\n"
 			<< "layout(set = 0, binding = 0, std430) buffer Buffer1\n"
 			<< "{\n"
 			<< "  uint result[];\n"
 			<< "};\n"
 			<< "\n"
 			<< "void main (void)\n"
 			<< "{\n"
 			<< "  uvec3 globalSize = gl_NumWorkGroups * gl_WorkGroupSize;\n"
 			<< "  highp uint offset = globalSize.x * ((globalSize.y * "
 			"gl_GlobalInvocationID.z) + gl_GlobalInvocationID.y) + "
 			"gl_GlobalInvocationID.x;\n"
 			<< bdyStr
 			<< "  result[offset] = tempResult;\n"
 			<< "}\n";

 		programCollection.glslSources.add("comp")
 				<< glu::ComputeSource(src.str()) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
 	}
 	else
 	{
 		const string vertex =
 			"#version 450\n"
 			"#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			"layout(set = 0, binding = 0, std430) buffer Buffer1\n"
 			"{\n"
 			"  uint result[];\n"
 			"};\n"
 			"\n"
 			"void main (void)\n"
 			"{\n"
 			+ bdyStr +
 			"  result[gl_VertexIndex] = tempResult;\n"
 			"  float pixelSize = 2.0f/1024.0f;\n"
 			"  float pixelPosition = pixelSize/2.0f - 1.0f;\n"
 			"  gl_Position = vec4(float(gl_VertexIndex) * pixelSize + pixelPosition, 0.0f, 0.0f, 1.0f);\n"
 			"  gl_PointSize = 1.0f;\n"
 			"}\n";

 		const string tesc =
 			"#version 450\n"
 			"#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			"layout(vertices=1) out;\n"
 			"layout(set = 0, binding = 1, std430) buffer Buffer1\n"
 			"{\n"
 			"  uint result[];\n"
 			"};\n"
 			"\n"
 			"void main (void)\n"
 			"{\n"
 			+ bdyStr +
 			"  result[gl_PrimitiveID] = tempResult;\n"
 			"  if (gl_InvocationID == 0)\n"
 			"  {\n"
 			"    gl_TessLevelOuter[0] = 1.0f;\n"
 			"    gl_TessLevelOuter[1] = 1.0f;\n"
 			"  }\n"
 			"  gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
 			"}\n";

 		const string tese =
 			"#version 450\n"
 			"#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			"layout(isolines) in;\n"
 			"layout(set = 0, binding = 2, std430) buffer Buffer1\n"
 			"{\n"
 			"  uint result[];\n"
 			"};\n"
 			"\n"
 			"void main (void)\n"
 			"{\n"
 			+ bdyStr +
 			"  result[gl_PrimitiveID * 2 + uint(gl_TessCoord.x + 0.5)] = tempResult;\n"
 			"  float pixelSize = 2.0f/1024.0f;\n"
 			"  gl_Position = gl_in[0].gl_Position + gl_TessCoord.x * pixelSize / 2.0f;\n"
 			"}\n";

 		const string geometry =
 			"#version 450\n"
 			"#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			"layout(${TOPOLOGY}) in;\n"
 			"layout(points, max_vertices = 1) out;\n"
 			"layout(set = 0, binding = 3, std430) buffer Buffer1\n"
 			"{\n"
 			"  uint result[];\n"
 			"};\n"
 			"\n"
 			"void main (void)\n"
 			"{\n"
 			+ bdyStr +
 			"  result[gl_PrimitiveIDIn] = tempResult;\n"
 			"  gl_Position = gl_in[0].gl_Position;\n"
 			"  EmitVertex();\n"
 			"  EndPrimitive();\n"
 			"}\n";

 		const string fragment =
 			"#version 450\n"
 			"#extension GL_ARB_shader_ballot: enable\n"
 			"#extension GL_ARB_gpu_shader_int64: enable\n"
 			"layout(location = 0) out uint result;\n"
 			"void main (void)\n"
 			"{\n"
 			+ bdyStr +
 			"  result = tempResult;\n"
 			"}\n";

 		subgroups::addNoSubgroupShader(programCollection);

 		programCollection.glslSources.add("vert")
 				<< glu::VertexSource(vertex) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
 		programCollection.glslSources.add("tesc")
 				<< glu::TessellationControlSource(tesc) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
 		programCollection.glslSources.add("tese")
 				<< glu::TessellationEvaluationSource(tese) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
 		subgroups::addGeometryShadersFromTemplate(geometry, vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u),
 												  programCollection.glslSources);
 		programCollection.glslSources.add("fragment")
 				<< glu::FragmentSource(fragment)<< vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
 	}
 }

 void supportedCheck (Context& context, CaseDefinition caseDef)
 {
 	DE_UNREF(caseDef);
 	if (!subgroups::isSubgroupSupported(context))
 		TCU_THROW(NotSupportedError, "Subgroup operations are not supported");

 	if (!context.requireDeviceFunctionality("VK_EXT_shader_subgroup_ballot"))
 	{
 		TCU_THROW(NotSupportedError, "Device does not support VK_EXT_shader_subgroup_ballot extension");
 	}

 	if (!subgroups::isInt64SupportedForDevice(context))
 		TCU_THROW(NotSupportedError, "Int64 is not supported");

 	if (caseDef.requiredSubgroupSize)
 	{
 		if (!context.requireDeviceFunctionality("VK_EXT_subgroup_size_control"))
 			TCU_THROW(NotSupportedError, "Device does not support VK_EXT_subgroup_size_control extension");
 		VkPhysicalDeviceSubgroupSizeControlFeaturesEXT subgroupSizeControlFeatures;
 		subgroupSizeControlFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT;
 		subgroupSizeControlFeatures.pNext = DE_NULL;

 		VkPhysicalDeviceFeatures2 features;
 		features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
 		features.pNext = &subgroupSizeControlFeatures;

 		context.getInstanceInterface().getPhysicalDeviceFeatures2(context.getPhysicalDevice(), &features);

 		if (subgroupSizeControlFeatures.subgroupSizeControl == DE_FALSE)
 			TCU_THROW(NotSupportedError, "Device does not support varying subgroup sizes nor required subgroup size");

 		if (subgroupSizeControlFeatures.computeFullSubgroups == DE_FALSE)
 			TCU_THROW(NotSupportedError, "Device does not support full subgroups in compute shaders");
 	}

 	*caseDef.geometryPointSizeSupported = subgroups::isTessellationAndGeometryPointSizeSupported(context);
 }

 tcu::TestStatus noSSBOtest (Context& context, const CaseDefinition caseDef)
 {
 	if (!subgroups::areSubgroupOperationsSupportedForStage(
 			context, caseDef.shaderStage))
 	{
 		if (subgroups::areSubgroupOperationsRequiredForStage(caseDef.shaderStage))
 		{
 			return tcu::TestStatus::fail(
 					   "Shader stage " +
 					   subgroups::getShaderStageName(caseDef.shaderStage) +
 					   " is required to support subgroup operations!");
 		}
 		else
 		{
 			TCU_THROW(NotSupportedError, "Device does not support subgroup operations for this stage");
 		}
 	}

 	if (VK_SHADER_STAGE_VERTEX_BIT == caseDef.shaderStage)
 		return subgroups::makeVertexFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
 	else if (VK_SHADER_STAGE_GEOMETRY_BIT == caseDef.shaderStage)
 		return subgroups::makeGeometryFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
 	else if ((VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT | VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT) & caseDef.shaderStage)
 		return subgroups::makeTessellationEvaluationFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
 	else
 		TCU_THROW(InternalError, "Unhandled shader stage");
 }

 tcu::TestStatus test (Context& context, const CaseDefinition caseDef)
 {
 	if (VK_SHADER_STAGE_COMPUTE_BIT == caseDef.shaderStage)
 	{
 		if (!subgroups::areSubgroupOperationsSupportedForStage(context, caseDef.shaderStage))
 		{
 			return tcu::TestStatus::fail(
 					   "Shader stage " +
 				subgroups::getShaderStageName(caseDef.shaderStage) +
 				" is required to support subgroup operations!");
 		}
 		if (caseDef.requiredSubgroupSize == DE_FALSE)
 			return subgroups::makeComputeTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkCompute);

 		tcu::TestLog& log	= context.getTestContext().getLog();
 		VkPhysicalDeviceSubgroupSizeControlPropertiesEXT subgroupSizeControlProperties;
 		subgroupSizeControlProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_PROPERTIES_EXT;
 		subgroupSizeControlProperties.pNext = DE_NULL;
 		VkPhysicalDeviceProperties2 properties;
 		properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
 		properties.pNext = &subgroupSizeControlProperties;

 		context.getInstanceInterface().getPhysicalDeviceProperties2(context.getPhysicalDevice(), &properties);

 		log << tcu::TestLog::Message << "Testing required subgroup size range [" <<  subgroupSizeControlProperties.minSubgroupSize << ", "
 			<< subgroupSizeControlProperties.maxSubgroupSize << "]" << tcu::TestLog::EndMessage;

 		// According to the spec, requiredSubgroupSize must be a power-of-two integer.
 		for (deUint32 size = subgroupSizeControlProperties.minSubgroupSize; size <= subgroupSizeControlProperties.maxSubgroupSize; size *= 2)
 		{
 			tcu::TestStatus result = subgroups::makeComputeTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0u, DE_NULL, checkCompute,
 																size, VK_PIPELINE_SHADER_STAGE_CREATE_REQUIRE_FULL_SUBGROUPS_BIT_EXT);
 			if (result.getCode() != QP_TEST_RESULT_PASS)
 			{
 				log << tcu::TestLog::Message << "subgroupSize " << size << " failed" << tcu::TestLog::EndMessage;
 				return result;
 			}
 		}

 		return tcu::TestStatus::pass("OK");
 	}
 	else
 	{
 		VkPhysicalDeviceSubgroupProperties subgroupProperties;
 		subgroupProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_PROPERTIES;
 		subgroupProperties.pNext = DE_NULL;

 		VkPhysicalDeviceProperties2 properties;
 		properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
 		properties.pNext = &subgroupProperties;

 		context.getInstanceInterface().getPhysicalDeviceProperties2(context.getPhysicalDevice(), &properties);

 		VkShaderStageFlagBits stages = (VkShaderStageFlagBits)(caseDef.shaderStage  & subgroupProperties.supportedStages);

 		if ( VK_SHADER_STAGE_FRAGMENT_BIT != stages && !subgroups::isVertexSSBOSupportedForDevice(context))
 		{
 			if ( (stages & VK_SHADER_STAGE_FRAGMENT_BIT) == 0)
 				TCU_THROW(NotSupportedError, "Device does not support vertex stage SSBO writes");
 			else
 				stages = VK_SHADER_STAGE_FRAGMENT_BIT;
 		}

 		if ((VkShaderStageFlagBits)0u == stages)
 			TCU_THROW(NotSupportedError, "Subgroup operations are not supported for any graphic shader");

 		return subgroups::allStages(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages, stages);
 	}
 	return tcu::TestStatus::pass("OK");
 }
 }

 namespace vkt
 {
 namespace subgroups
 {
 tcu::TestCaseGroup* createSubgroupsBallotMasksTests(tcu::TestContext& testCtx)
 {
 	de::MovePtr<tcu::TestCaseGroup> graphicGroup(new tcu::TestCaseGroup(
 		testCtx, "graphics", "VK_EXT_shader_subgroup_ballot masks category tests: graphics"));
 	de::MovePtr<tcu::TestCaseGroup> computeGroup(new tcu::TestCaseGroup(
 		testCtx, "compute", "VK_EXT_shader_subgroup_ballot masks category tests: compute"));
 	de::MovePtr<tcu::TestCaseGroup> framebufferGroup(new tcu::TestCaseGroup(
 		testCtx, "framebuffer", "VK_EXT_shader_subgroup_ballot masks category tests: framebuffer"));

 	const VkShaderStageFlags stages[] =
 	{
 		VK_SHADER_STAGE_VERTEX_BIT,
 		VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
 		VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
 		VK_SHADER_STAGE_GEOMETRY_BIT,
 	};
 	for (int maskTypeIndex = 0; maskTypeIndex < MASKTYPE_LAST; ++maskTypeIndex)
 	{
 		const string mask = de::toLower(getMaskTypeName(maskTypeIndex));

 		{
 			CaseDefinition caseDef = {maskTypeIndex, VK_SHADER_STAGE_COMPUTE_BIT, de::SharedPtr<bool>(new bool), DE_FALSE};
 			addFunctionCaseWithPrograms(computeGroup.get(), mask, "", supportedCheck, initPrograms, test, caseDef);
 			caseDef.requiredSubgroupSize = DE_TRUE;
 			addFunctionCaseWithPrograms(computeGroup.get(), mask + "_requiredsubgroupsize", "", supportedCheck, initPrograms, test, caseDef);
 		}

 		{
 			const CaseDefinition caseDef = {maskTypeIndex, VK_SHADER_STAGE_ALL_GRAPHICS, de::SharedPtr<bool>(new bool), DE_FALSE};
 			addFunctionCaseWithPrograms(graphicGroup.get(), mask, "", supportedCheck, initPrograms, test, caseDef);
 		}

 		for (int stageIndex = 0; stageIndex < DE_LENGTH_OF_ARRAY(stages); ++stageIndex)
 		{
 			const CaseDefinition caseDef = {maskTypeIndex, stages[stageIndex], de::SharedPtr<bool>(new bool), DE_FALSE};
 			addFunctionCaseWithPrograms(framebufferGroup.get(), mask + "_" + getShaderStageName(caseDef.shaderStage), "", supportedCheck, initFrameBufferPrograms, noSSBOtest, caseDef);
 		}
 	}

 	de::MovePtr<tcu::TestCaseGroup> groupARB(new tcu::TestCaseGroup(
 		testCtx, "ext_shader_subgroup_ballot", "VK_EXT_shader_subgroup_ballot masks category tests"));

 	de::MovePtr<tcu::TestCaseGroup> group(new tcu::TestCaseGroup(
 		testCtx, "ballot_mask", "VK_EXT_shader_subgroup_ballot mask category tests"));

 	groupARB->addChild(graphicGroup.release());
 	groupARB->addChild(computeGroup.release());
 	groupARB->addChild(framebufferGroup.release());
 	group->addChild(groupARB.release());

 	return group.release();
 }

 } // subgroups
 } // vkt
	/*------------------------------------------------------------------------
	* Vulkan Conformance Tests
	* ------------------------
	*
	* Copyright (c) 2019 The Khronos Group Inc.
	* Copyright (c) 2019 Valve Corporation.
	*
	* 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 Subgroups Tests
	/ /--------------------------------------------------------------------*/

	#include "vktSubgroupsBallotMasksTests.hpp"
	#include "vktSubgroupsTestsUtils.hpp"

	#include <string>
	#include <vector>

	using namespace tcu;
	using namespace std;
	using namespace vk;
	using namespace vkt;

	namespace
	{

	enum MaskType
	{
	MASKTYPE_EQ = 0,
	MASKTYPE_GE,
	MASKTYPE_GT,
	MASKTYPE_LE,
	MASKTYPE_LT,
	MASKTYPE_LAST
	};

	static bool checkVertexPipelineStages(const void* internalData, std::vector<const void*> datas,
	deUint32 width, deUint32)
	{
	DE_UNREF(internalData);
	return vkt::subgroups::check(datas, width, 0xf);
	}

	static bool checkCompute(const void* internalData, std::vector<const void*> datas,
	const deUint32 numWorkgroups[3], const deUint32 localSize[3],
	deUint32)
	{
	DE_UNREF(internalData);
	return vkt::subgroups::checkCompute(datas, numWorkgroups, localSize, 0xf);
	}

	std::string getMaskTypeName(int maskType)
	{
	switch (maskType)
	{
	default:
	DE_FATAL("Unsupported mask type");
	return "";
	case MASKTYPE_EQ:
	return "gl_SubGroupEqMaskARB";
	case MASKTYPE_GE:
	return "gl_SubGroupGeMaskARB";
	case MASKTYPE_GT:
	return "gl_SubGroupGtMaskARB";
	case MASKTYPE_LE:
	return "gl_SubGroupLeMaskARB";
	case MASKTYPE_LT:
	return "gl_SubGroupLtMaskARB";
	}
	}


	struct CaseDefinition
	{
	int maskType;
	VkShaderStageFlags shaderStage;
	de::SharedPtr<bool> geometryPointSizeSupported;
	deBool requiredSubgroupSize;
	};

	std::string getBodySource(CaseDefinition caseDef)
	{
	std::ostringstream bdy;

	bdy << "uint64_t value = " << getMaskTypeName(caseDef.maskType) << ";\n";
	bdy << "bool temp = true;\n";

	switch(caseDef.maskType)
	{
	case MASKTYPE_EQ:
	bdy << "uint64_t mask = uint64_t(1) << gl_SubGroupInvocationARB;\n";
	bdy << "temp = (value & mask) != 0;\n";
	break;
	case MASKTYPE_GE:
	bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
	bdy << " uint64_t mask = uint64_t(1) << i;\n";
	bdy << " if (i >= gl_SubGroupInvocationARB && (value & mask) == 0)\n";
	bdy << " temp = false;\n";
	bdy << " if (i < gl_SubGroupInvocationARB && (value & mask) != 0)\n";
	bdy << " temp = false;\n";
	bdy << "};\n";
	break;
	case MASKTYPE_GT:
	bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
	bdy << " uint64_t mask = uint64_t(1) << i;\n";
	bdy << " if (i > gl_SubGroupInvocationARB && (value & mask) == 0)\n";
	bdy << " temp = false;\n";
	bdy << " if (i <= gl_SubGroupInvocationARB && (value & mask) != 0)\n";
	bdy << " temp = false;\n";
	bdy << "};\n";
	break;
	case MASKTYPE_LE:
	bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
	bdy << " uint64_t mask = uint64_t(1) << i;\n";
	bdy << " if (i <= gl_SubGroupInvocationARB && (value & mask) == 0)\n";
	bdy << " temp = false;\n";
	bdy << " if (i > gl_SubGroupInvocationARB && (value & mask) != 0)\n";
	bdy << " temp = false;\n";
	bdy << "};\n";
	break;
	case MASKTYPE_LT:
	bdy << "for (uint i = 0; i < gl_SubGroupSizeARB; i++) {\n";
	bdy << " uint64_t mask = uint64_t(1) << i;\n";
	bdy << " if (i < gl_SubGroupInvocationARB && (value & mask) == 0)\n";
	bdy << " temp = false;\n";
	bdy << " if (i >= gl_SubGroupInvocationARB && (value & mask) != 0)\n";
	bdy << " temp = false;\n";
	bdy << "};\n";
	break;
	}

	bdy << "uint tempResult = temp ? 0xf : 0x2;\n";
	return bdy.str();
	}

	void initFrameBufferPrograms(SourceCollections& programCollection, CaseDefinition caseDef)
	{
	const vk::ShaderBuildOptions buildOptions (programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);

	subgroups::setFragmentShaderFrameBuffer(programCollection);

	if (VK_SHADER_STAGE_VERTEX_BIT != caseDef.shaderStage)
	subgroups::setVertexShaderFrameBuffer(programCollection);

	std::string bdyStr = getBodySource(caseDef);

	if (VK_SHADER_STAGE_VERTEX_BIT == caseDef.shaderStage)
	{
	std::ostringstream vertex;
	vertex << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
	<< "#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	<< "layout(location = 0) in highp vec4 in_position;\n"
	<< "layout(location = 0) out float out_color;\n"
	<< "\n"
	<< "void main (void)\n"
	<< "{\n"
	<< bdyStr
	<< " out_color = float(tempResult);\n"
	<< " gl_Position = in_position;\n"
	<< " gl_PointSize = 1.0f;\n"
	<< "}\n";
	programCollection.glslSources.add("vert")
	<< glu::VertexSource(vertex.str()) << buildOptions;
	}
	else if (VK_SHADER_STAGE_GEOMETRY_BIT == caseDef.shaderStage)
	{
	std::ostringstream geometry;

	geometry << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
	<< "#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	<< "layout(points) in;\n"
	<< "layout(points, max_vertices = 1) out;\n"
	<< "layout(location = 0) out float out_color;\n"
	<< "void main (void)\n"
	<< "{\n"
	<< bdyStr
	<< " out_color = float(tempResult);\n"
	<< " gl_Position = gl_in[0].gl_Position;\n"
	<< (*caseDef.geometryPointSizeSupported ? " gl_PointSize = gl_in[0].gl_PointSize;\n" : "")
	<< " EmitVertex();\n"
	<< " EndPrimitive();\n"
	<< "}\n";

	programCollection.glslSources.add("geometry")
	<< glu::GeometrySource(geometry.str()) << buildOptions;
	}
	else if (VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT == caseDef.shaderStage)
	{
	std::ostringstream controlSource;

	controlSource << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
	<< "#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	<< "layout(vertices = 2) out;\n"
	<< "layout(location = 0) out float out_color[];\n"
	<< "\n"
	<< "void main (void)\n"
	<< "{\n"
	<< " if (gl_InvocationID == 0)\n"
	<< " {\n"
	<< " gl_TessLevelOuter[0] = 1.0f;\n"
	<< " gl_TessLevelOuter[1] = 1.0f;\n"
	<< " }\n"
	<< bdyStr
	<< " out_color[gl_InvocationID ] = float(tempResult);\n"
	<< " gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
	<< "}\n";

	programCollection.glslSources.add("tesc")
	<< glu::TessellationControlSource(controlSource.str()) << buildOptions;
	subgroups::setTesEvalShaderFrameBuffer(programCollection);
	}
	else if (VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT == caseDef.shaderStage)
	{
	std::ostringstream evaluationSource;
	evaluationSource << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_450)<<"\n"
	<< "#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	<< "layout(isolines, equal_spacing, ccw ) in;\n"
	<< "layout(location = 0) out float out_color;\n"
	<< "void main (void)\n"
	<< "{\n"
	<< bdyStr
	<< " out_color = float(tempResult);\n"
	<< " gl_Position = mix(gl_in[0].gl_Position, gl_in[1].gl_Position, gl_TessCoord.x);\n"
	<< "}\n";

	subgroups::setTesCtrlShaderFrameBuffer(programCollection);
	programCollection.glslSources.add("tese")
	<< glu::TessellationEvaluationSource(evaluationSource.str()) << buildOptions;
	}
	else
	{
	DE_FATAL("Unsupported shader stage");
	}
	}

	void initPrograms(SourceCollections& programCollection, CaseDefinition caseDef)
	{
	std::string bdyStr = getBodySource(caseDef);

	if (VK_SHADER_STAGE_COMPUTE_BIT == caseDef.shaderStage)
	{
	std::ostringstream src;

	src << "#version 450\n"
	<< "#extension GL_ARB_shader_ballot: enable\n"
	<< "#extension GL_ARB_gpu_shader_int64: enable\n"
	<< "layout (local_size_x_id = 0, local_size_y_id = 1, "
	"local_size_z_id = 2) in;\n"
	<< "layout(set = 0, binding = 0, std430) buffer Buffer1\n"
	<< "{\n"
	<< " uint result[];\n"
	<< "};\n"
	<< "\n"
	<< "void main (void)\n"
	<< "{\n"
	<< " uvec3 globalSize = gl_NumWorkGroups * gl_WorkGroupSize;\n"
	<< " highp uint offset = globalSize.x * ((globalSize.y * "
	"gl_GlobalInvocationID.z) + gl_GlobalInvocationID.y) + "
	"gl_GlobalInvocationID.x;\n"
	<< bdyStr
	<< " result[offset] = tempResult;\n"
	<< "}\n";

	programCollection.glslSources.add("comp")
	<< glu::ComputeSource(src.str()) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
	}
	else
	{
	const string vertex =
	"#version 450\n"
	"#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	"layout(set = 0, binding = 0, std430) buffer Buffer1\n"
	"{\n"
	" uint result[];\n"
	"};\n"
	"\n"
	"void main (void)\n"
	"{\n"
	+ bdyStr +
	" result[gl_VertexIndex] = tempResult;\n"
	" float pixelSize = 2.0f/1024.0f;\n"
	" float pixelPosition = pixelSize/2.0f - 1.0f;\n"
	" gl_Position = vec4(float(gl_VertexIndex) * pixelSize + pixelPosition, 0.0f, 0.0f, 1.0f);\n"
	" gl_PointSize = 1.0f;\n"
	"}\n";

	const string tesc =
	"#version 450\n"
	"#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	"layout(vertices=1) out;\n"
	"layout(set = 0, binding = 1, std430) buffer Buffer1\n"
	"{\n"
	" uint result[];\n"
	"};\n"
	"\n"
	"void main (void)\n"
	"{\n"
	+ bdyStr +
	" result[gl_PrimitiveID] = tempResult;\n"
	" if (gl_InvocationID == 0)\n"
	" {\n"
	" gl_TessLevelOuter[0] = 1.0f;\n"
	" gl_TessLevelOuter[1] = 1.0f;\n"
	" }\n"
	" gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
	"}\n";

	const string tese =
	"#version 450\n"
	"#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	"layout(isolines) in;\n"
	"layout(set = 0, binding = 2, std430) buffer Buffer1\n"
	"{\n"
	" uint result[];\n"
	"};\n"
	"\n"
	"void main (void)\n"
	"{\n"
	+ bdyStr +
	" result[gl_PrimitiveID * 2 + uint(gl_TessCoord.x + 0.5)] = tempResult;\n"
	" float pixelSize = 2.0f/1024.0f;\n"
	" gl_Position = gl_in[0].gl_Position + gl_TessCoord.x * pixelSize / 2.0f;\n"
	"}\n";

	const string geometry =
	"#version 450\n"
	"#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	"layout(${TOPOLOGY}) in;\n"
	"layout(points, max_vertices = 1) out;\n"
	"layout(set = 0, binding = 3, std430) buffer Buffer1\n"
	"{\n"
	" uint result[];\n"
	"};\n"
	"\n"
	"void main (void)\n"
	"{\n"
	+ bdyStr +
	" result[gl_PrimitiveIDIn] = tempResult;\n"
	" gl_Position = gl_in[0].gl_Position;\n"
	" EmitVertex();\n"
	" EndPrimitive();\n"
	"}\n";

	const string fragment =
	"#version 450\n"
	"#extension GL_ARB_shader_ballot: enable\n"
	"#extension GL_ARB_gpu_shader_int64: enable\n"
	"layout(location = 0) out uint result;\n"
	"void main (void)\n"
	"{\n"
	+ bdyStr +
	" result = tempResult;\n"
	"}\n";

	subgroups::addNoSubgroupShader(programCollection);

	programCollection.glslSources.add("vert")
	<< glu::VertexSource(vertex) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
	programCollection.glslSources.add("tesc")
	<< glu::TessellationControlSource(tesc) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
	programCollection.glslSources.add("tese")
	<< glu::TessellationEvaluationSource(tese) << vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
	subgroups::addGeometryShadersFromTemplate(geometry, vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u),
	programCollection.glslSources);
	programCollection.glslSources.add("fragment")
	<< glu::FragmentSource(fragment)<< vk::ShaderBuildOptions(programCollection.usedVulkanVersion, vk::SPIRV_VERSION_1_3, 0u);
	}
	}

	void supportedCheck (Context& context, CaseDefinition caseDef)
	{
	DE_UNREF(caseDef);
	if (!subgroups::isSubgroupSupported(context))
	TCU_THROW(NotSupportedError, "Subgroup operations are not supported");

	if (!context.requireDeviceFunctionality("VK_EXT_shader_subgroup_ballot"))
	{
	TCU_THROW(NotSupportedError, "Device does not support VK_EXT_shader_subgroup_ballot extension");
	}

	if (!subgroups::isInt64SupportedForDevice(context))
	TCU_THROW(NotSupportedError, "Int64 is not supported");

	if (caseDef.requiredSubgroupSize)
	{
	if (!context.requireDeviceFunctionality("VK_EXT_subgroup_size_control"))
	TCU_THROW(NotSupportedError, "Device does not support VK_EXT_subgroup_size_control extension");
	VkPhysicalDeviceSubgroupSizeControlFeaturesEXT subgroupSizeControlFeatures;
	subgroupSizeControlFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT;
	subgroupSizeControlFeatures.pNext = DE_NULL;

	VkPhysicalDeviceFeatures2 features;
	features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
	features.pNext = &subgroupSizeControlFeatures;

	context.getInstanceInterface().getPhysicalDeviceFeatures2(context.getPhysicalDevice(), &features);

	if (subgroupSizeControlFeatures.subgroupSizeControl == DE_FALSE)
	TCU_THROW(NotSupportedError, "Device does not support varying subgroup sizes nor required subgroup size");

	if (subgroupSizeControlFeatures.computeFullSubgroups == DE_FALSE)
	TCU_THROW(NotSupportedError, "Device does not support full subgroups in compute shaders");
	}

	*caseDef.geometryPointSizeSupported = subgroups::isTessellationAndGeometryPointSizeSupported(context);
	}

	tcu::TestStatus noSSBOtest (Context& context, const CaseDefinition caseDef)
	{
	if (!subgroups::areSubgroupOperationsSupportedForStage(
	context, caseDef.shaderStage))
	{
	if (subgroups::areSubgroupOperationsRequiredForStage(caseDef.shaderStage))
	{
	return tcu::TestStatus::fail(
	"Shader stage " +
	subgroups::getShaderStageName(caseDef.shaderStage) +
	" is required to support subgroup operations!");
	}
	else
	{
	TCU_THROW(NotSupportedError, "Device does not support subgroup operations for this stage");
	}
	}

	if (VK_SHADER_STAGE_VERTEX_BIT == caseDef.shaderStage)
	return subgroups::makeVertexFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
	else if (VK_SHADER_STAGE_GEOMETRY_BIT == caseDef.shaderStage)
	return subgroups::makeGeometryFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
	else if ((VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT \| VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT) & caseDef.shaderStage)
	return subgroups::makeTessellationEvaluationFrameBufferTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages);
	else
	TCU_THROW(InternalError, "Unhandled shader stage");
	}

	tcu::TestStatus test (Context& context, const CaseDefinition caseDef)
	{
	if (VK_SHADER_STAGE_COMPUTE_BIT == caseDef.shaderStage)
	{
	if (!subgroups::areSubgroupOperationsSupportedForStage(context, caseDef.shaderStage))
	{
	return tcu::TestStatus::fail(
	"Shader stage " +
	subgroups::getShaderStageName(caseDef.shaderStage) +
	" is required to support subgroup operations!");
	}
	if (caseDef.requiredSubgroupSize == DE_FALSE)
	return subgroups::makeComputeTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkCompute);

	tcu::TestLog& log = context.getTestContext().getLog();
	VkPhysicalDeviceSubgroupSizeControlPropertiesEXT subgroupSizeControlProperties;
	subgroupSizeControlProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_PROPERTIES_EXT;
	subgroupSizeControlProperties.pNext = DE_NULL;
	VkPhysicalDeviceProperties2 properties;
	properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
	properties.pNext = &subgroupSizeControlProperties;

	context.getInstanceInterface().getPhysicalDeviceProperties2(context.getPhysicalDevice(), &properties);

	log << tcu::TestLog::Message << "Testing required subgroup size range [" << subgroupSizeControlProperties.minSubgroupSize << ", "
	<< subgroupSizeControlProperties.maxSubgroupSize << "]" << tcu::TestLog::EndMessage;

	// According to the spec, requiredSubgroupSize must be a power-of-two integer.
	for (deUint32 size = subgroupSizeControlProperties.minSubgroupSize; size <= subgroupSizeControlProperties.maxSubgroupSize; size *= 2)
	{
	tcu::TestStatus result = subgroups::makeComputeTest(context, VK_FORMAT_R32_UINT, DE_NULL, 0u, DE_NULL, checkCompute,
	size, VK_PIPELINE_SHADER_STAGE_CREATE_REQUIRE_FULL_SUBGROUPS_BIT_EXT);
	if (result.getCode() != QP_TEST_RESULT_PASS)
	{
	log << tcu::TestLog::Message << "subgroupSize " << size << " failed" << tcu::TestLog::EndMessage;
	return result;
	}
	}

	return tcu::TestStatus::pass("OK");
	}
	else
	{
	VkPhysicalDeviceSubgroupProperties subgroupProperties;
	subgroupProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_PROPERTIES;
	subgroupProperties.pNext = DE_NULL;

	VkPhysicalDeviceProperties2 properties;
	properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
	properties.pNext = &subgroupProperties;

	context.getInstanceInterface().getPhysicalDeviceProperties2(context.getPhysicalDevice(), &properties);

	VkShaderStageFlagBits stages = (VkShaderStageFlagBits)(caseDef.shaderStage & subgroupProperties.supportedStages);

	if ( VK_SHADER_STAGE_FRAGMENT_BIT != stages && !subgroups::isVertexSSBOSupportedForDevice(context))
	{
	if ( (stages & VK_SHADER_STAGE_FRAGMENT_BIT) == 0)
	TCU_THROW(NotSupportedError, "Device does not support vertex stage SSBO writes");
	else
	stages = VK_SHADER_STAGE_FRAGMENT_BIT;
	}

	if ((VkShaderStageFlagBits)0u == stages)
	TCU_THROW(NotSupportedError, "Subgroup operations are not supported for any graphic shader");

	return subgroups::allStages(context, VK_FORMAT_R32_UINT, DE_NULL, 0, DE_NULL, checkVertexPipelineStages, stages);
	}
	return tcu::TestStatus::pass("OK");
	}
	}

	namespace vkt
	{
	namespace subgroups
	{
	tcu::TestCaseGroup* createSubgroupsBallotMasksTests(tcu::TestContext& testCtx)
	{
	de::MovePtr<tcu::TestCaseGroup> graphicGroup(new tcu::TestCaseGroup(
	testCtx, "graphics", "VK_EXT_shader_subgroup_ballot masks category tests: graphics"));
	de::MovePtr<tcu::TestCaseGroup> computeGroup(new tcu::TestCaseGroup(
	testCtx, "compute", "VK_EXT_shader_subgroup_ballot masks category tests: compute"));
	de::MovePtr<tcu::TestCaseGroup> framebufferGroup(new tcu::TestCaseGroup(
	testCtx, "framebuffer", "VK_EXT_shader_subgroup_ballot masks category tests: framebuffer"));

	const VkShaderStageFlags stages[] =
	{
	VK_SHADER_STAGE_VERTEX_BIT,
	VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
	VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
	VK_SHADER_STAGE_GEOMETRY_BIT,
	};
	for (int maskTypeIndex = 0; maskTypeIndex < MASKTYPE_LAST; ++maskTypeIndex)
	{
	const string mask = de::toLower(getMaskTypeName(maskTypeIndex));

	{
	CaseDefinition caseDef = {maskTypeIndex, VK_SHADER_STAGE_COMPUTE_BIT, de::SharedPtr<bool>(new bool), DE_FALSE};
	addFunctionCaseWithPrograms(computeGroup.get(), mask, "", supportedCheck, initPrograms, test, caseDef);
	caseDef.requiredSubgroupSize = DE_TRUE;
	addFunctionCaseWithPrograms(computeGroup.get(), mask + "_requiredsubgroupsize", "", supportedCheck, initPrograms, test, caseDef);
	}

	{
	const CaseDefinition caseDef = {maskTypeIndex, VK_SHADER_STAGE_ALL_GRAPHICS, de::SharedPtr<bool>(new bool), DE_FALSE};
	addFunctionCaseWithPrograms(graphicGroup.get(), mask, "", supportedCheck, initPrograms, test, caseDef);
	}

	for (int stageIndex = 0; stageIndex < DE_LENGTH_OF_ARRAY(stages); ++stageIndex)
	{
	const CaseDefinition caseDef = {maskTypeIndex, stages[stageIndex], de::SharedPtr<bool>(new bool), DE_FALSE};
	addFunctionCaseWithPrograms(framebufferGroup.get(), mask + "_" + getShaderStageName(caseDef.shaderStage), "", supportedCheck, initFrameBufferPrograms, noSSBOtest, caseDef);
	}
	}

	de::MovePtr<tcu::TestCaseGroup> groupARB(new tcu::TestCaseGroup(
	testCtx, "ext_shader_subgroup_ballot", "VK_EXT_shader_subgroup_ballot masks category tests"));

	de::MovePtr<tcu::TestCaseGroup> group(new tcu::TestCaseGroup(
	testCtx, "ballot_mask", "VK_EXT_shader_subgroup_ballot mask category tests"));

	groupARB->addChild(graphicGroup.release());
	groupARB->addChild(computeGroup.release());
	groupARB->addChild(framebufferGroup.release());
	group->addChild(groupARB.release());

	return group.release();
	}

	} // subgroups
	} // vkt