#!amber # Copyright 2020 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: Covers specific inst combine simplify demanded and inst combine shifts path # The test passes because the shader always writes red. # Optimized using spirv-opt with the following arguments: # '-O' # spirv-opt commit hash: a187dd58a0485988841d325a85c8e6063f53500a SHADER vertex variant_vertex_shader PASSTHROUGH # variant_fragment_shader is derived from the following GLSL: # #version 310 es # #define _int_1 _GLF_uniform_int_values[0] # #define _int_0 _GLF_uniform_int_values[1] # #define _float_0_0 _GLF_uniform_float_values[0] # #define _float_256_0 _GLF_uniform_float_values[0] # # precision highp float; # precision highp int; # # // Contents of _GLF_uniform_float_values: [0.0, 256.0] # layout(set = 0, binding = 0) uniform buf0 # { # float _GLF_uniform_float_values[2]; # }; # # // Contents of _GLF_uniform_int_values: [1, 0] # layout(set = 0, binding = 1) uniform buf1 # { # int _GLF_uniform_int_values[2]; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # vec2 v1 = vec2(_float_256_0); # # // v1.y becomes undefined. This results in an undefined value, but not in undefined behavior. # v1[_int_1] = ldexp(v1.y, -256); # # vec2 v2 = v1 * mat2(_float_0_0); # # if (v2.x == _float_0_0) # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); # else # _GLF_color = vec4(_int_0); # } SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 ; SPIR-V ; Version: 1.0 ; Generator: Khronos Glslang Reference Front End; 10 ; Bound: 78 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %58 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 310 OpName %4 "main" OpName %9 "v1" OpName %13 "buf0" OpMemberName %13 0 "_GLF_uniform_float_values" OpName %15 "" OpName %23 "buf1" OpMemberName %23 0 "_GLF_uniform_int_values" OpName %25 "" OpName %58 "_GLF_color" OpDecorate %12 ArrayStride 16 OpMemberDecorate %13 0 Offset 0 OpDecorate %13 Block OpDecorate %15 DescriptorSet 0 OpDecorate %15 Binding 0 OpDecorate %22 ArrayStride 16 OpMemberDecorate %23 0 Offset 0 OpDecorate %23 Block OpDecorate %25 DescriptorSet 0 OpDecorate %25 Binding 1 OpDecorate %58 Location 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeVector %6 2 %8 = OpTypePointer Function %7 %10 = OpTypeInt 32 0 %11 = OpConstant %10 2 %12 = OpTypeArray %6 %11 %13 = OpTypeStruct %12 %14 = OpTypePointer Uniform %13 %15 = OpVariable %14 Uniform %16 = OpTypeInt 32 1 %17 = OpConstant %16 0 %18 = OpTypePointer Uniform %6 %22 = OpTypeArray %16 %11 %23 = OpTypeStruct %22 %24 = OpTypePointer Uniform %23 %25 = OpVariable %24 Uniform %26 = OpTypePointer Uniform %16 %29 = OpConstant %10 1 %30 = OpTypePointer Function %6 %33 = OpConstant %16 -256 %40 = OpTypeMatrix %7 2 %42 = OpConstant %6 0 %52 = OpTypeBool %56 = OpTypeVector %6 4 %57 = OpTypePointer Output %56 %58 = OpVariable %57 Output %62 = OpConstant %16 1 %4 = OpFunction %2 None %3 %5 = OpLabel %9 = OpVariable %8 Function %19 = OpAccessChain %18 %15 %17 %17 %20 = OpLoad %6 %19 %21 = OpCompositeConstruct %7 %20 %20 OpStore %9 %21 %27 = OpAccessChain %26 %25 %17 %17 %28 = OpLoad %16 %27 %31 = OpAccessChain %30 %9 %29 %32 = OpLoad %6 %31 %34 = OpExtInst %6 %1 Ldexp %32 %33 %35 = OpAccessChain %30 %9 %28 OpStore %35 %34 %37 = OpLoad %7 %9 %43 = OpCompositeConstruct %7 %20 %42 %44 = OpCompositeConstruct %7 %42 %20 %45 = OpCompositeConstruct %40 %43 %44 %46 = OpVectorTimesMatrix %7 %37 %45 %49 = OpCompositeExtract %6 %46 0 %53 = OpFOrdEqual %52 %49 %20 OpSelectionMerge %55 None OpBranchConditional %53 %54 %73 %54 = OpLabel %61 = OpConvertSToF %6 %28 %63 = OpAccessChain %26 %25 %17 %62 %64 = OpLoad %16 %63 %65 = OpConvertSToF %6 %64 %72 = OpCompositeConstruct %56 %61 %65 %65 %61 OpStore %58 %72 OpBranch %55 %73 = OpLabel %74 = OpAccessChain %26 %25 %17 %62 %75 = OpLoad %16 %74 %76 = OpConvertSToF %6 %75 %77 = OpCompositeConstruct %56 %76 %76 %76 %76 OpStore %58 %77 OpBranch %55 %55 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # _GLF_uniform_int_values BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 1 0 END # _GLF_uniform_float_values BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 0.0 256.0 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 1 BIND BUFFER variant__GLF_uniform_float_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