#!amber

# Copyright 2019 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 bug found by GraphicsFuzz.

# Short description: A fragment shader with a call, if, while, switch

# The test passes because the fragment shader does some control flow and then writes the color red.

# Optimized using spirv-opt with the following arguments:
# '-O'
# spirv-opt commit hash: 06407250a169c6a03b3765e86619075af1a8c187



SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 310 es
# precision highp float;
#
# layout(location = 0) out vec4 _GLF_color;
#
# layout(set = 0, binding = 0) uniform buf0
# {
#   vec2 injectionSwitch;
# };
# int data[10];
#
# void merge(int from)
# {
#   int i = 1;
#   if (1 < data[1])
#   {
#     i++;
#   }
#   while (i < 3)
#   {
#     i++;
#     switch (int(injectionSwitch.x))
#     {
#     case 19:
#       from++;
#     case 38:
#     case 23:
#       break;
#     case 78:
#       _GLF_color = vec4(1.0);
#     default:
#       1;
#     }
#   }
#   data[from] = 1;
# }
# void main()
# {
#   merge(1);
#   _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 7
; Bound: 112
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %59
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %18 "data"
               OpName %40 "buf0"
               OpMemberName %40 0 "injectionSwitch"
               OpName %42 ""
               OpName %59 "_GLF_color"
               OpDecorate %18 RelaxedPrecision
               OpMemberDecorate %40 0 Offset 0
               OpDecorate %40 Block
               OpDecorate %42 DescriptorSet 0
               OpDecorate %42 Binding 0
               OpDecorate %59 Location 0
               OpDecorate %71 RelaxedPrecision
               OpDecorate %85 RelaxedPrecision
               OpDecorate %95 RelaxedPrecision
               OpDecorate %110 RelaxedPrecision
               OpDecorate %99 RelaxedPrecision
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %7 = OpTypePointer Function %6
         %13 = OpConstant %6 1
         %14 = OpTypeInt 32 0
         %15 = OpConstant %14 10
         %16 = OpTypeArray %6 %15
         %22 = OpTypeBool
         %34 = OpConstant %6 3
         %38 = OpTypeFloat 32
         %39 = OpTypeVector %38 2
         %40 = OpTypeStruct %39
         %41 = OpTypePointer Uniform %40
         %42 = OpVariable %41 Uniform
         %43 = OpConstant %6 0
         %44 = OpConstant %14 0
         %45 = OpTypePointer Uniform %38
         %57 = OpTypeVector %38 4
         %58 = OpTypePointer Output %57
         %59 = OpVariable %58 Output
         %60 = OpConstant %38 1
         %61 = OpConstantComposite %57 %60 %60 %60 %60
         %67 = OpConstant %38 0
         %68 = OpConstantComposite %57 %60 %67 %67 %60
         %98 = OpTypePointer Function %16
        %109 = OpConstant %6 2
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %18 = OpVariable %98 Function
         %70 = OpAccessChain %7 %18 %13
         %71 = OpLoad %6 %70
         %72 = OpSLessThan %22 %13 %71
        %110 = OpSelect %6 %72 %109 %13
               OpBranch %77
         %77 = OpLabel
        %101 = OpPhi %6 %13 %5 %106 %89
         %99 = OpPhi %6 %110 %5 %85 %89
         %82 = OpSLessThan %22 %99 %34
               OpLoopMerge %78 %89 None
               OpBranchConditional %82 %83 %78
         %83 = OpLabel
         %85 = OpIAdd %6 %99 %13
         %86 = OpAccessChain %45 %42 %43 %44
         %87 = OpLoad %38 %86
         %88 = OpConvertFToS %6 %87
               OpSelectionMerge %111 None
               OpSwitch %88 %90 19 %91 38 %92 23 %92 78 %93
         %90 = OpLabel
               OpBranch %89
         %91 = OpLabel
         %95 = OpIAdd %6 %101 %13
               OpBranch %92
         %92 = OpLabel
        %108 = OpPhi %6 %101 %83 %95 %91
               OpBranch %89
         %93 = OpLabel
               OpStore %59 %61
               OpBranch %90
        %111 = OpLabel
               OpBranch %89
         %89 = OpLabel
        %106 = OpPhi %6 %101 %90 %108 %92 %43 %111
               OpBranch %77
         %78 = OpLabel
         %97 = OpAccessChain %7 %18 %101
               OpStore %97 %13
               OpStore %59 %68
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA
 0.0 1.0
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_injectionSwitch 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