| #!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] |
| # #define _float_0_4 _GLF_uniform_float_values[0] |
| # #define _float_1_0 _GLF_uniform_float_values[1] |
| # #define _float_256_0 _GLF_uniform_float_values[2] |
| # |
| # precision highp int; |
| # precision highp float; |
| # |
| # // Contents of _GLF_uniform_int_values: [0, 1] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int _GLF_uniform_int_values[2]; |
| # }; |
| # // Contents of _GLF_uniform_float_values: [0.4, 1.0, 256.0] |
| # layout(set = 0, binding = 1) uniform buf1 |
| # { |
| # float _GLF_uniform_float_values[3]; |
| # }; |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # // Always false. |
| # if(gl_FragCoord.y < _float_0_4) |
| # { |
| # _GLF_color = vec4(_int_0); |
| # } |
| # else |
| # { |
| # // gl_FragCoord has the decimal part of 0.5. If we name the integer part |
| # // of gl_FragCoord (X, Y) it can be expressed as (X + 0.5, Y + 0.5). |
| # // |
| # // The value of v is calculated as follows: |
| # // v = ((X + 0.5, Y + 0.5) - (1.0, 0.4)) * 256 |
| # // = (X - 1 + 0.5, Y + 0.5 - 0.4) * 256 |
| # // = (X - 0.5, Y + 0.1) * 256 |
| # // = (X * 256 - 128, Y * 256 + 25.6) |
| # // |
| # // X * 256 is always an even number, and substracting 128 still keeps it even. |
| # // Y * 256 is always and even number, but adding 25.6 (and converting to an integer) |
| # // makes it always odd. |
| # ivec2 v = ivec2((gl_FragCoord.xy - vec2(_float_1_0, _float_0_4)) * _float_256_0); |
| # |
| # // v.x is even and v.y is odd. We substract one from v.y making it even too. |
| # // Doing a bitwise AND with an even number always resuls in zero. |
| # _GLF_color = vec4(_float_1_0, (v.y - _int_1) & _int_1, v.x & _int_1, _float_1_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: 82 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %9 %30 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %9 "gl_FragCoord" |
| OpName %17 "buf1" |
| OpMemberName %17 0 "_GLF_uniform_float_values" |
| OpName %19 "" |
| OpName %30 "_GLF_color" |
| OpName %33 "buf0" |
| OpMemberName %33 0 "_GLF_uniform_int_values" |
| OpName %35 "" |
| OpName %44 "v" |
| OpDecorate %9 BuiltIn FragCoord |
| OpDecorate %16 ArrayStride 16 |
| OpMemberDecorate %17 0 Offset 0 |
| OpDecorate %17 Block |
| OpDecorate %19 DescriptorSet 0 |
| OpDecorate %19 Binding 1 |
| OpDecorate %30 Location 0 |
| OpDecorate %32 ArrayStride 16 |
| OpMemberDecorate %33 0 Offset 0 |
| OpDecorate %33 Block |
| OpDecorate %35 DescriptorSet 0 |
| OpDecorate %35 Binding 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Input %7 |
| %9 = OpVariable %8 Input |
| %10 = OpTypeInt 32 0 |
| %11 = OpConstant %10 1 |
| %12 = OpTypePointer Input %6 |
| %15 = OpConstant %10 3 |
| %16 = OpTypeArray %6 %15 |
| %17 = OpTypeStruct %16 |
| %18 = OpTypePointer Uniform %17 |
| %19 = OpVariable %18 Uniform |
| %20 = OpTypeInt 32 1 |
| %21 = OpConstant %20 0 |
| %22 = OpTypePointer Uniform %6 |
| %25 = OpTypeBool |
| %29 = OpTypePointer Output %7 |
| %30 = OpVariable %29 Output |
| %31 = OpConstant %10 2 |
| %32 = OpTypeArray %20 %31 |
| %33 = OpTypeStruct %32 |
| %34 = OpTypePointer Uniform %33 |
| %35 = OpVariable %34 Uniform |
| %36 = OpTypePointer Uniform %20 |
| %42 = OpTypeVector %20 2 |
| %43 = OpTypePointer Function %42 |
| %45 = OpTypeVector %6 2 |
| %48 = OpConstant %20 1 |
| %55 = OpConstant %20 2 |
| %62 = OpTypePointer Function %20 |
| %72 = OpConstant %10 0 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %44 = OpVariable %43 Function |
| %13 = OpAccessChain %12 %9 %11 |
| %14 = OpLoad %6 %13 |
| %23 = OpAccessChain %22 %19 %21 %21 |
| %24 = OpLoad %6 %23 |
| %26 = OpFOrdLessThan %25 %14 %24 |
| OpSelectionMerge %28 None |
| OpBranchConditional %26 %27 %41 |
| %27 = OpLabel |
| %37 = OpAccessChain %36 %35 %21 %21 |
| %38 = OpLoad %20 %37 |
| %39 = OpConvertSToF %6 %38 |
| %40 = OpCompositeConstruct %7 %39 %39 %39 %39 |
| OpStore %30 %40 |
| OpBranch %28 |
| %41 = OpLabel |
| %46 = OpLoad %7 %9 |
| %47 = OpVectorShuffle %45 %46 %46 0 1 |
| %49 = OpAccessChain %22 %19 %21 %48 |
| %50 = OpLoad %6 %49 |
| %51 = OpAccessChain %22 %19 %21 %21 |
| %52 = OpLoad %6 %51 |
| %53 = OpCompositeConstruct %45 %50 %52 |
| %54 = OpFSub %45 %47 %53 |
| %56 = OpAccessChain %22 %19 %21 %55 |
| %57 = OpLoad %6 %56 |
| %58 = OpVectorTimesScalar %45 %54 %57 |
| %59 = OpConvertFToS %42 %58 |
| OpStore %44 %59 |
| %60 = OpAccessChain %22 %19 %21 %48 |
| %61 = OpLoad %6 %60 |
| %63 = OpAccessChain %62 %44 %11 |
| %64 = OpLoad %20 %63 |
| %65 = OpAccessChain %36 %35 %21 %48 |
| %66 = OpLoad %20 %65 |
| %67 = OpISub %20 %64 %66 |
| %68 = OpAccessChain %36 %35 %21 %48 |
| %69 = OpLoad %20 %68 |
| %70 = OpBitwiseAnd %20 %67 %69 |
| %71 = OpConvertSToF %6 %70 |
| %73 = OpAccessChain %62 %44 %72 |
| %74 = OpLoad %20 %73 |
| %75 = OpAccessChain %36 %35 %21 %48 |
| %76 = OpLoad %20 %75 |
| %77 = OpBitwiseAnd %20 %74 %76 |
| %78 = OpConvertSToF %6 %77 |
| %79 = OpAccessChain %22 %19 %21 %48 |
| %80 = OpLoad %6 %79 |
| %81 = OpCompositeConstruct %7 %61 %71 %78 %80 |
| OpStore %30 %81 |
| OpBranch %28 |
| %28 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_float_values |
| BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA |
| 0.4 1.0 256.0 |
| END |
| # _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_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 |
| 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 |
