#!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 LLVM code paths

# The test passes because the shader always writes red.

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


SHADER vertex texgen_vert PASSTHROUGH

SHADER fragment texgen_frag GLSL
#version 430
precision highp float;

layout(location = 0) out vec4 _GLF_color;

void main()
{
 _GLF_color = vec4(
 gl_FragCoord.x * (1.0 / 256.0),
 (int(gl_FragCoord.x) ^ int(gl_FragCoord.y)) * (1.0 / 256.0),
 gl_FragCoord.y * (1.0 / 256.0),
 1.0);
}
END
BUFFER default_texture FORMAT B8G8R8A8_UNORM

PIPELINE graphics texgen_pipeline
  ATTACH texgen_vert
  ATTACH texgen_frag
  FRAMEBUFFER_SIZE 256 256
  BIND BUFFER default_texture AS color LOCATION 0
END

CLEAR_COLOR texgen_pipeline 0 0 0 255
CLEAR texgen_pipeline
RUN texgen_pipeline DRAW_RECT POS 0 0  SIZE 256 256

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# #define _int_10 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
# #define _float_0_0 _GLF_uniform_float_values[0]
# #define _float_1_0 _GLF_uniform_float_values[1]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [10, 0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[2];
# };
#
# // Contents of _GLF_uniform_float_values: [0.0, 1.0]
# layout(set = 0, binding = 1) uniform buf1
# {
#     float _GLF_uniform_float_values[2];
# };
#
# layout(set = 0, binding = 2) uniform sampler2D tex;
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     // Always false.
#     if(gl_FragCoord.y < _float_0_0)
#     {
#         return;
#     }
#
#     // Always false.
#     if(gl_FragCoord.x < _float_0_0)
#     {
#         if(gl_FragCoord.x < _float_0_0)
#         {
#             return;
#         }
#
#         for(int i = _int_0; i < _int_10; i++)
#         {
#             if(gl_FragCoord.x < _float_1_0)
#             {
#                 return;
#             }
#         }
#     }
#
#     _GLF_color = vec4(_float_1_0, texture(tex, vec2(_float_1_0)).yzw);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 105
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %9 %76
               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 %49 "buf0"
               OpMemberName %49 0 "_GLF_uniform_int_values"
               OpName %51 ""
               OpName %76 "_GLF_color"
               OpName %82 "tex"
               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 %48 ArrayStride 16
               OpMemberDecorate %49 0 Offset 0
               OpDecorate %49 Block
               OpDecorate %51 DescriptorSet 0
               OpDecorate %51 Binding 0
               OpDecorate %76 Location 0
               OpDecorate %82 RelaxedPrecision
               OpDecorate %82 DescriptorSet 0
               OpDecorate %82 Binding 2
               OpDecorate %83 RelaxedPrecision
               OpDecorate %87 RelaxedPrecision
               OpDecorate %88 RelaxedPrecision
          %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 2
         %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
         %30 = OpConstant %10 0
         %48 = OpTypeArray %20 %15
         %49 = OpTypeStruct %48
         %50 = OpTypePointer Uniform %49
         %51 = OpVariable %50 Uniform
         %52 = OpConstant %20 1
         %53 = OpTypePointer Uniform %20
         %75 = OpTypePointer Output %7
         %76 = OpVariable %75 Output
         %79 = OpTypeImage %6 2D 0 0 0 1 Unknown
         %80 = OpTypeSampledImage %79
         %81 = OpTypePointer UniformConstant %80
         %82 = OpVariable %81 UniformConstant
         %86 = OpTypeVector %6 2
         %97 = OpConstantFalse %25
        %100 = OpConstantTrue %25
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpSelectionMerge %95 None
               OpSwitch %30 %96
         %96 = OpLabel
         %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 %28
         %27 = OpLabel
               OpBranch %95
         %28 = OpLabel
         %31 = OpAccessChain %12 %9 %30
         %32 = OpLoad %6 %31
         %35 = OpFOrdLessThan %25 %32 %24
               OpSelectionMerge %37 None
               OpBranchConditional %35 %36 %37
         %36 = OpLabel
               OpSelectionMerge %44 None
               OpBranchConditional %35 %43 %44
         %43 = OpLabel
               OpBranch %95
         %44 = OpLabel
         %54 = OpAccessChain %53 %51 %21 %52
         %55 = OpLoad %20 %54
               OpBranch %56
         %56 = OpLabel
        %103 = OpPhi %20 %55 %44 %74 %59
         %62 = OpAccessChain %53 %51 %21 %21
         %63 = OpLoad %20 %62
         %64 = OpSLessThan %25 %103 %63
               OpLoopMerge %58 %59 None
               OpBranchConditional %64 %57 %58
         %57 = OpLabel
         %67 = OpAccessChain %22 %19 %21 %52
         %68 = OpLoad %6 %67
         %69 = OpFOrdLessThan %25 %32 %68
               OpSelectionMerge %71 None
               OpBranchConditional %69 %70 %71
         %70 = OpLabel
               OpBranch %58
         %71 = OpLabel
               OpBranch %59
         %59 = OpLabel
         %74 = OpIAdd %20 %103 %52
               OpBranch %56
         %58 = OpLabel
        %104 = OpPhi %25 %97 %56 %100 %70
               OpSelectionMerge %101 None
               OpBranchConditional %104 %95 %101
        %101 = OpLabel
               OpBranch %37
         %37 = OpLabel
         %77 = OpAccessChain %22 %19 %21 %52
         %78 = OpLoad %6 %77
         %83 = OpLoad %80 %82
         %87 = OpCompositeConstruct %86 %78 %78
         %88 = OpImageSampleImplicitLod %7 %83 %87
         %91 = OpCompositeExtract %6 %88 1
         %92 = OpCompositeExtract %6 %88 2
         %93 = OpCompositeExtract %6 %88 3
         %94 = OpCompositeConstruct %7 %78 %91 %92 %93
               OpStore %76 %94
               OpBranch %95
         %95 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# tex
SAMPLER variant_tex

# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.0 1.0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 10 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 default_texture AS combined_image_sampler SAMPLER variant_tex DESCRIPTOR_SET 0 BINDING 2
  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