| #!amber |
| |
| # Copyright 2021 Google LLC |
| # |
| # 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. |
| |
| |
| # A test for a coverage-gap found by the GraphicsFuzz project. |
| |
| # Short description: A fragment shader that covers specific NIR code paths |
| |
| # The test passes because the shader always writes red. |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 320 es |
| # #define _int_0 _GLF_uniform_int_values[0] |
| # #define _int_1 _GLF_uniform_int_values[1] |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # // Contents of _GLF_uniform_int_values: [0, 1] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int _GLF_uniform_int_values[2]; |
| # }; |
| # |
| # const int _GLF_global_loop_bound = 100; |
| # int _GLF_global_loop_count = 0; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); |
| # |
| # while (_GLF_global_loop_count < _GLF_global_loop_bound) |
| # { |
| # _GLF_global_loop_count++; |
| # |
| # // Always false. |
| # if (!(true || _int_0 == _int_1)) |
| # { |
| # break; |
| # } |
| # } |
| # |
| # // This loop will not be iterated since the loop bound |
| # // has already been reached with the previous loop. |
| # while (_GLF_global_loop_count < _GLF_global_loop_bound) |
| # { |
| # _GLF_global_loop_count++; |
| # _GLF_color = vec4(_int_0); |
| # } |
| # |
| # // The output color still remains red beacuse the loop above |
| # // was not executed. |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 10 |
| ; Bound: 73 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %13 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %8 "_GLF_global_loop_count" |
| OpName %13 "_GLF_color" |
| OpName %17 "buf0" |
| OpMemberName %17 0 "_GLF_uniform_int_values" |
| OpName %19 "" |
| OpDecorate %13 Location 0 |
| OpDecorate %16 ArrayStride 16 |
| OpMemberDecorate %17 0 Offset 0 |
| OpDecorate %17 Block |
| OpDecorate %19 DescriptorSet 0 |
| OpDecorate %19 Binding 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypePointer Private %6 |
| %8 = OpVariable %7 Private |
| %9 = OpConstant %6 0 |
| %10 = OpTypeFloat 32 |
| %11 = OpTypeVector %10 4 |
| %12 = OpTypePointer Output %11 |
| %13 = OpVariable %12 Output |
| %14 = OpTypeInt 32 0 |
| %15 = OpConstant %14 2 |
| %16 = OpTypeArray %6 %15 |
| %17 = OpTypeStruct %16 |
| %18 = OpTypePointer Uniform %17 |
| %19 = OpVariable %18 Uniform |
| %20 = OpConstant %6 1 |
| %21 = OpTypePointer Uniform %6 |
| %41 = OpConstant %6 100 |
| %42 = OpTypeBool |
| %46 = OpConstantTrue %42 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpStore %8 %9 |
| %22 = OpAccessChain %21 %19 %9 %20 |
| %23 = OpLoad %6 %22 |
| %24 = OpConvertSToF %10 %23 |
| %25 = OpAccessChain %21 %19 %9 %9 |
| %26 = OpLoad %6 %25 |
| %27 = OpConvertSToF %10 %26 |
| %28 = OpAccessChain %21 %19 %9 %9 |
| %29 = OpLoad %6 %28 |
| %30 = OpConvertSToF %10 %29 |
| %31 = OpAccessChain %21 %19 %9 %20 |
| %32 = OpLoad %6 %31 |
| %33 = OpConvertSToF %10 %32 |
| %34 = OpCompositeConstruct %11 %24 %27 %30 %33 |
| OpStore %13 %34 |
| OpBranch %35 |
| %35 = OpLabel |
| OpLoopMerge %37 %38 None |
| OpBranch %39 |
| %39 = OpLabel |
| %40 = OpLoad %6 %8 |
| %43 = OpSLessThan %42 %40 %41 |
| OpBranchConditional %43 %36 %37 |
| %36 = OpLabel |
| %44 = OpLoad %6 %8 |
| %45 = OpIAdd %6 %44 %20 |
| OpStore %8 %45 |
| %47 = OpLogicalNot %42 %46 |
| OpSelectionMerge %49 None |
| OpBranchConditional %47 %48 %49 |
| %48 = OpLabel |
| %50 = OpAccessChain %21 %19 %9 %9 |
| %51 = OpLoad %6 %50 |
| %52 = OpAccessChain %21 %19 %9 %20 |
| %53 = OpLoad %6 %52 |
| %54 = OpIEqual %42 %51 %53 |
| OpBranch %49 |
| %49 = OpLabel |
| %55 = OpPhi %42 %46 %36 %54 %48 |
| %56 = OpLogicalNot %42 %55 |
| OpSelectionMerge %58 None |
| OpBranchConditional %56 %57 %58 |
| %57 = OpLabel |
| OpBranch %37 |
| %58 = OpLabel |
| OpBranch %38 |
| %38 = OpLabel |
| OpBranch %35 |
| %37 = OpLabel |
| OpBranch %60 |
| %60 = OpLabel |
| OpLoopMerge %62 %63 None |
| OpBranch %64 |
| %64 = OpLabel |
| %65 = OpLoad %6 %8 |
| %66 = OpSLessThan %42 %65 %41 |
| OpBranchConditional %66 %61 %62 |
| %61 = OpLabel |
| %67 = OpLoad %6 %8 |
| %68 = OpIAdd %6 %67 %20 |
| OpStore %8 %68 |
| %69 = OpAccessChain %21 %19 %9 %9 |
| %70 = OpLoad %6 %69 |
| %71 = OpConvertSToF %10 %70 |
| %72 = OpCompositeConstruct %11 %71 %71 %71 %71 |
| OpStore %13 %72 |
| OpBranch %63 |
| %63 = OpLabel |
| OpBranch %60 |
| %62 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_int_values |
| BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA |
| 0 1 |
| END |
| |
| BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM |
| |
| PIPELINE graphics variant_pipeline |
| ATTACH variant_vertex_shader |
| ATTACH variant_fragment_shader |
| FRAMEBUFFER_SIZE 256 256 |
| BIND BUFFER variant_framebuffer AS color LOCATION 0 |
| BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 |
| END |
| CLEAR_COLOR variant_pipeline 0 0 0 255 |
| |
| CLEAR variant_pipeline |
| RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 |
| |
| EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 |