#!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:
# '-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]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [1, 0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[2];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     _GLF_color = vec4(0);
#
#     // Iterates once.
#     for(int i = _int_1 & 1; i > 0; i--)
#     {
#         while(true)
#         {
#             _GLF_color = vec4(i, _int_0, _int_0, i);
#
#             // Always true.
#             if(_int_1 > 0)
#             {
#                 break;
#             }
#         }
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 61
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %9
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %9 "_GLF_color"
               OpName %18 "buf0"
               OpMemberName %18 0 "_GLF_uniform_int_values"
               OpName %20 ""
               OpDecorate %9 Location 0
               OpDecorate %17 ArrayStride 16
               OpMemberDecorate %18 0 Offset 0
               OpDecorate %18 Block
               OpDecorate %20 DescriptorSet 0
               OpDecorate %20 Binding 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 4
          %8 = OpTypePointer Output %7
          %9 = OpVariable %8 Output
         %10 = OpConstant %6 0
         %11 = OpConstantComposite %7 %10 %10 %10 %10
         %12 = OpTypeInt 32 1
         %15 = OpTypeInt 32 0
         %16 = OpConstant %15 2
         %17 = OpTypeArray %12 %16
         %18 = OpTypeStruct %17
         %19 = OpTypePointer Uniform %18
         %20 = OpVariable %19 Uniform
         %21 = OpConstant %12 0
         %22 = OpTypePointer Uniform %12
         %25 = OpConstant %12 1
         %33 = OpTypeBool
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpStore %9 %11
         %23 = OpAccessChain %22 %20 %21 %21
         %24 = OpLoad %12 %23
         %26 = OpBitwiseAnd %12 %24 %25
               OpBranch %27
         %27 = OpLabel
         %60 = OpPhi %12 %26 %5 %59 %30
         %34 = OpSGreaterThan %33 %60 %21
               OpLoopMerge %29 %30 None
               OpBranchConditional %34 %28 %29
         %28 = OpLabel
               OpBranch %35
         %35 = OpLabel
               OpLoopMerge %55 %38 None
               OpBranch %36
         %36 = OpLabel
         %42 = OpConvertSToF %6 %60
         %43 = OpAccessChain %22 %20 %21 %25
         %44 = OpLoad %12 %43
         %45 = OpConvertSToF %6 %44
         %51 = OpCompositeConstruct %7 %42 %45 %45 %42
               OpStore %9 %51
         %54 = OpSGreaterThan %33 %24 %21
               OpSelectionMerge %56 None
               OpBranchConditional %54 %55 %56
         %55 = OpLabel
               OpBranch %30
         %56 = OpLabel
               OpBranch %38
         %38 = OpLabel
               OpBranch %35
         %30 = OpLabel
         %59 = OpISub %12 %60 %25
               OpBranch %27
         %29 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 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 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