#!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.

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;
#
# const int _GLF_global_loop_bound = 100;
# int _GLF_global_loop_count = 0;
#
# void main()
# {
#     while(_GLF_global_loop_count < _GLF_global_loop_bound)
#     {
#         _GLF_global_loop_count ++;
#
#         if(_GLF_global_loop_count * _GLF_global_loop_count > 10)
#         {
#             break;
#         }
#     }
#
#     // Always true.
#     if(_GLF_global_loop_count == 4)
#     {
#         _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: 64
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %38
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %8 "_GLF_global_loop_count"
               OpName %38 "_GLF_color"
               OpName %42 "buf0"
               OpMemberName %42 0 "_GLF_uniform_int_values"
               OpName %44 ""
               OpDecorate %38 Location 0
               OpDecorate %41 ArrayStride 16
               OpMemberDecorate %42 0 Offset 0
               OpDecorate %42 Block
               OpDecorate %44 DescriptorSet 0
               OpDecorate %44 Binding 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %7 = OpTypePointer Private %6
          %8 = OpVariable %7 Private
          %9 = OpConstant %6 0
         %16 = OpConstant %6 100
         %17 = OpTypeBool
         %20 = OpConstant %6 1
         %25 = OpConstant %6 10
         %31 = OpConstant %6 4
         %35 = OpTypeFloat 32
         %36 = OpTypeVector %35 4
         %37 = OpTypePointer Output %36
         %38 = OpVariable %37 Output
         %39 = OpTypeInt 32 0
         %40 = OpConstant %39 2
         %41 = OpTypeArray %6 %40
         %42 = OpTypeStruct %41
         %43 = OpTypePointer Uniform %42
         %44 = OpVariable %43 Uniform
         %45 = OpTypePointer Uniform %6
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpStore %8 %9
               OpBranch %10
         %10 = OpLabel
               OpLoopMerge %12 %13 None
               OpBranch %14
         %14 = OpLabel
         %15 = OpLoad %6 %8
         %18 = OpSLessThan %17 %15 %16
               OpBranchConditional %18 %11 %12
         %11 = OpLabel
         %19 = OpLoad %6 %8
         %21 = OpIAdd %6 %19 %20
               OpStore %8 %21
         %22 = OpLoad %6 %8
         %23 = OpLoad %6 %8
         %24 = OpIMul %6 %22 %23
         %26 = OpSGreaterThan %17 %24 %25
               OpSelectionMerge %28 None
               OpBranchConditional %26 %27 %28
         %27 = OpLabel
               OpBranch %12
         %28 = OpLabel
               OpBranch %13
         %13 = OpLabel
               OpBranch %10
         %12 = OpLabel
         %30 = OpLoad %6 %8
         %32 = OpIEqual %17 %30 %31
               OpSelectionMerge %34 None
               OpBranchConditional %32 %33 %59
         %33 = OpLabel
         %46 = OpAccessChain %45 %44 %9 %9
         %47 = OpLoad %6 %46
         %48 = OpConvertSToF %35 %47
         %49 = OpAccessChain %45 %44 %9 %20
         %50 = OpLoad %6 %49
         %51 = OpConvertSToF %35 %50
         %52 = OpAccessChain %45 %44 %9 %20
         %53 = OpLoad %6 %52
         %54 = OpConvertSToF %35 %53
         %55 = OpAccessChain %45 %44 %9 %9
         %56 = OpLoad %6 %55
         %57 = OpConvertSToF %35 %56
         %58 = OpCompositeConstruct %36 %48 %51 %54 %57
               OpStore %38 %58
               OpBranch %34
         %59 = OpLabel
         %60 = OpAccessChain %45 %44 %9 %20
         %61 = OpLoad %6 %60
         %62 = OpConvertSToF %35 %61
         %63 = OpCompositeConstruct %36 %62 %62 %62 %62
               OpStore %38 %63
               OpBranch %34
         %34 = 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 256 256
  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 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255