xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-function-switch-case-constant-clamp-transpose-identity-matrices.amber

#!amber

# Copyright 2022 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 LLVM code paths

# The test passes because the shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '-Os'
# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af



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_25 _GLF_uniform_float_values[0]
# #define _float_1_0 _GLF_uniform_float_values[1]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_float_values: [0.25, 1.0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     float _GLF_uniform_float_values[2];
# };
#
# // Contents of _GLF_uniform_int_values: [0, 1]
# layout(set = 0, binding = 1) uniform buf1
# {
#     int _GLF_uniform_int_values[2];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# float func(vec2 v)
# {
#     switch(1)
#     {
#         case 0:
#             return 1.0;
#         case 1:
#             // Trasposing an identity matrix has no effect. The line below simplifies to
#             // clamp(vec2(0.25, 0.25, vec2(0.5, 0.5), vec2(1.0, 1.0))).x = vec2(0.5, 0.5).x = 0.5
#             return clamp(vec2(transpose(mat4(_float_0_25))), v, vec2(transpose(mat4(_float_1_0)))).x;
#     }
# }
#
# void main()
# {
#     // The fraction parts of gl_FragCoord components are always 0.5 (the center of the pixel).
#     // The function returns 0.5.
#     if(func(fract(gl_FragCoord.xy)) == 0.5)
#     {
#         _GLF_color = vec4(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: 124
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %61 %73
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %23 "buf0"
               OpMemberName %23 0 "_GLF_uniform_float_values"
               OpName %25 ""
               OpName %61 "gl_FragCoord"
               OpName %73 "_GLF_color"
               OpName %75 "buf1"
               OpMemberName %75 0 "_GLF_uniform_int_values"
               OpName %77 ""
               OpDecorate %22 ArrayStride 16
               OpMemberDecorate %23 0 Offset 0
               OpDecorate %23 Block
               OpDecorate %25 DescriptorSet 0
               OpDecorate %25 Binding 0
               OpDecorate %61 BuiltIn FragCoord
               OpDecorate %73 Location 0
               OpDecorate %74 ArrayStride 16
               OpMemberDecorate %75 0 Offset 0
               OpDecorate %75 Block
               OpDecorate %77 DescriptorSet 0
               OpDecorate %77 Binding 1
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 2
         %13 = OpTypeInt 32 1
         %14 = OpConstant %13 1
         %18 = OpConstant %6 1
         %20 = OpTypeInt 32 0
         %21 = OpConstant %20 2
         %22 = OpTypeArray %6 %21
         %23 = OpTypeStruct %22
         %24 = OpTypePointer Uniform %23
         %25 = OpVariable %24 Uniform
         %26 = OpConstant %13 0
         %27 = OpTypePointer Uniform %6
         %30 = OpTypeVector %6 4
         %31 = OpTypeMatrix %30 4
         %32 = OpConstant %6 0
         %60 = OpTypePointer Input %30
         %61 = OpVariable %60 Input
         %67 = OpConstant %6 0.5
         %68 = OpTypeBool
         %72 = OpTypePointer Output %30
         %73 = OpVariable %72 Output
         %74 = OpTypeArray %13 %21
         %75 = OpTypeStruct %74
         %76 = OpTypePointer Uniform %75
         %77 = OpVariable %76 Uniform
         %78 = OpTypePointer Uniform %13
        %123 = OpUndef %6
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %62 = OpLoad %30 %61
         %63 = OpVectorShuffle %7 %62 %62 0 1
         %64 = OpExtInst %7 %1 Fract %63
         %98 = OpAccessChain %27 %25 %26 %26
         %99 = OpLoad %6 %98
        %100 = OpCompositeConstruct %30 %99 %32 %32 %32
        %101 = OpCompositeConstruct %30 %32 %99 %32 %32
        %102 = OpCompositeConstruct %30 %32 %32 %99 %32
        %103 = OpCompositeConstruct %30 %32 %32 %32 %99
        %104 = OpCompositeConstruct %31 %100 %101 %102 %103
        %105 = OpTranspose %31 %104
        %106 = OpCompositeExtract %6 %105 0 0
        %108 = OpCompositeConstruct %7 %106 %123
        %110 = OpAccessChain %27 %25 %26 %14
        %111 = OpLoad %6 %110
        %112 = OpCompositeConstruct %30 %111 %32 %32 %32
        %113 = OpCompositeConstruct %30 %32 %111 %32 %32
        %114 = OpCompositeConstruct %30 %32 %32 %111 %32
        %115 = OpCompositeConstruct %30 %32 %32 %32 %111
        %116 = OpCompositeConstruct %31 %112 %113 %114 %115
        %117 = OpTranspose %31 %116
        %118 = OpCompositeExtract %6 %117 0 0
        %120 = OpCompositeConstruct %7 %118 %123
        %121 = OpExtInst %7 %1 FClamp %108 %64 %120
        %122 = OpCompositeExtract %6 %121 0
         %69 = OpFOrdEqual %68 %122 %67
               OpSelectionMerge %71 None
               OpBranchConditional %69 %70 %89
         %89 = OpLabel
         %90 = OpAccessChain %78 %77 %26 %26
         %91 = OpLoad %13 %90
         %92 = OpConvertSToF %6 %91
         %93 = OpCompositeConstruct %30 %92 %92 %92 %92
               OpStore %73 %93
               OpBranch %71
         %70 = OpLabel
         %79 = OpAccessChain %78 %77 %26 %26
         %80 = OpLoad %13 %79
         %81 = OpConvertSToF %6 %80
         %85 = OpAccessChain %78 %77 %26 %14
         %86 = OpLoad %13 %85
         %87 = OpConvertSToF %6 %86
         %88 = OpCompositeConstruct %30 %18 %81 %81 %87
               OpStore %73 %88
               OpBranch %71
         %71 = 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
# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.25 1.0
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 32 32
  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 32 32

EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255