#!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 variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# #define _int_1 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
# #define _int_5 _GLF_uniform_int_values[2]
# #define _int_3 _GLF_uniform_int_values[3]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [1, 0, 5, 3]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[4];
# };
#
# const int _GLF_global_loop_bound = 10;
# int _GLF_global_loop_count = 0;
#
# // Contents of injectionSwitch: [0.0, 1.0]
# layout(set = 0, binding = 1) uniform buf1
# {
#     highp vec2 injectionSwitch;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     int a = _int_0;
#
#     // Iterated three times.
#     while(_GLF_global_loop_count < _GLF_global_loop_bound)
#     {
#         a++;
#
#         // Iterated four times.
#         for(int i = clamp(ivec2(1, int(injectionSwitch.y)), ivec2(0), ivec2(_int_1)).x; i < _int_5; i++)
#         {
#             _GLF_global_loop_count++;
#         }
#     }
#
#     // Always true.
#     if(a == _int_3)
#     {
#         _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: 102
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %76
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %15 "buf0"
               OpMemberName %15 0 "_GLF_uniform_int_values"
               OpName %17 ""
               OpName %76 "_GLF_color"
               OpDecorate %14 ArrayStride 16
               OpMemberDecorate %15 0 Offset 0
               OpDecorate %15 Block
               OpDecorate %17 DescriptorSet 0
               OpDecorate %17 Binding 0
               OpDecorate %76 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %9 = OpConstant %6 0
         %12 = OpTypeInt 32 0
         %13 = OpConstant %12 4
         %14 = OpTypeArray %6 %13
         %15 = OpTypeStruct %14
         %16 = OpTypePointer Uniform %15
         %17 = OpVariable %16 Uniform
         %18 = OpConstant %6 1
         %19 = OpTypePointer Uniform %6
         %28 = OpConstant %6 10
         %29 = OpTypeBool
         %34 = OpTypeFloat 32
         %44 = OpTypeVector %6 2
         %46 = OpConstantComposite %44 %9 %9
         %59 = OpConstant %6 2
         %68 = OpConstant %6 3
         %74 = OpTypeVector %34 4
         %75 = OpTypePointer Output %74
         %76 = OpVariable %75 Output
        %101 = OpUndef %6
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %20 = OpAccessChain %19 %17 %9 %18
         %21 = OpLoad %6 %20
               OpBranch %22
         %22 = OpLabel
         %96 = OpPhi %6 %21 %5 %32 %25
         %95 = OpPhi %6 %9 %5 %98 %25
         %30 = OpSLessThan %29 %95 %28
               OpLoopMerge %24 %25 None
               OpBranchConditional %30 %23 %24
         %23 = OpLabel
         %32 = OpIAdd %6 %96 %18
         %45 = OpCompositeConstruct %44 %18 %101
         %47 = OpAccessChain %19 %17 %9 %9
         %48 = OpLoad %6 %47
         %49 = OpCompositeConstruct %44 %48 %48
         %50 = OpExtInst %44 %1 SClamp %45 %46 %49
         %52 = OpCompositeExtract %6 %50 0
               OpBranch %53
         %53 = OpLabel
         %98 = OpPhi %6 %95 %23 %64 %54
         %97 = OpPhi %6 %52 %23 %66 %54
         %60 = OpAccessChain %19 %17 %9 %59
         %61 = OpLoad %6 %60
         %62 = OpSLessThan %29 %97 %61
               OpLoopMerge %55 %54 None
               OpBranchConditional %62 %54 %55
         %54 = OpLabel
         %64 = OpIAdd %6 %98 %18
         %66 = OpIAdd %6 %97 %18
               OpBranch %53
         %55 = OpLabel
               OpBranch %25
         %25 = OpLabel
               OpBranch %22
         %24 = OpLabel
         %69 = OpAccessChain %19 %17 %9 %68
         %70 = OpLoad %6 %69
         %71 = OpIEqual %29 %96 %70
               OpSelectionMerge %73 None
               OpBranchConditional %71 %72 %90
         %72 = OpLabel
         %77 = OpAccessChain %19 %17 %9 %9
         %78 = OpLoad %6 %77
         %79 = OpConvertSToF %34 %78
         %82 = OpConvertSToF %34 %21
         %89 = OpCompositeConstruct %74 %79 %82 %82 %79
               OpStore %76 %89
               OpBranch %73
         %90 = OpLabel
         %93 = OpConvertSToF %34 %21
         %94 = OpCompositeConstruct %74 %93 %93 %93 %93
               OpStore %76 %94
               OpBranch %73
         %73 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA
 0.0 1.0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 1 0 5 3
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_injectionSwitch 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