#!amber

# Copyright 2020 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 a specific bitwise operator cobmining code path

# 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 310 es
# #define _int_1 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
#
# precision highp float;
#
# // Contents of _GLF_uniform_int_values: [1, 0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[2];
# };
#
# // Contents of v1: [0.0, 1.0]
# layout(set = 0, binding = 1) uniform buf1
# {
#     vec2 v1;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     bool b = true;
#
#     // Always true.
#     if (v1.x > v1.y)
#     {
#         // Always false.
#         if (v1.x < v1.y)
#         {
#             b = false;
#         }
#     }
#     if (b)
#     {
#         _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; 8
; Bound: 67
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %41
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "b"
               OpName %12 "buf1"
               OpMemberName %12 0 "v1"
               OpName %14 ""
               OpName %41 "_GLF_color"
               OpName %44 "buf0"
               OpMemberName %44 0 "_GLF_uniform_int_values"
               OpName %46 ""
               OpMemberDecorate %12 0 Offset 0
               OpDecorate %12 Block
               OpDecorate %14 DescriptorSet 0
               OpDecorate %14 Binding 1
               OpDecorate %41 Location 0
               OpDecorate %43 ArrayStride 16
               OpMemberDecorate %44 0 RelaxedPrecision
               OpMemberDecorate %44 0 Offset 0
               OpDecorate %44 Block
               OpDecorate %46 DescriptorSet 0
               OpDecorate %46 Binding 0
               OpDecorate %49 RelaxedPrecision
               OpDecorate %53 RelaxedPrecision
               OpDecorate %56 RelaxedPrecision
               OpDecorate %59 RelaxedPrecision
               OpDecorate %64 RelaxedPrecision
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeBool
          %7 = OpTypePointer Function %6
          %9 = OpConstantTrue %6
         %10 = OpTypeFloat 32
         %11 = OpTypeVector %10 2
         %12 = OpTypeStruct %11
         %13 = OpTypePointer Uniform %12
         %14 = OpVariable %13 Uniform
         %15 = OpTypeInt 32 1
         %16 = OpConstant %15 0
         %17 = OpTypeInt 32 0
         %18 = OpConstant %17 0
         %19 = OpTypePointer Uniform %10
         %22 = OpConstant %17 1
         %35 = OpConstantFalse %6
         %39 = OpTypeVector %10 4
         %40 = OpTypePointer Output %39
         %41 = OpVariable %40 Output
         %42 = OpConstant %17 2
         %43 = OpTypeArray %15 %42
         %44 = OpTypeStruct %43
         %45 = OpTypePointer Uniform %44
         %46 = OpVariable %45 Uniform
         %47 = OpTypePointer Uniform %15
         %51 = OpConstant %15 1
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
               OpStore %8 %9
         %20 = OpAccessChain %19 %14 %16 %18
         %21 = OpLoad %10 %20
         %23 = OpAccessChain %19 %14 %16 %22
         %24 = OpLoad %10 %23
         %25 = OpFOrdGreaterThan %6 %21 %24
               OpSelectionMerge %27 None
               OpBranchConditional %25 %26 %27
         %26 = OpLabel
         %28 = OpAccessChain %19 %14 %16 %18
         %29 = OpLoad %10 %28
         %30 = OpAccessChain %19 %14 %16 %22
         %31 = OpLoad %10 %30
         %32 = OpFOrdLessThan %6 %29 %31
               OpSelectionMerge %34 None
               OpBranchConditional %32 %33 %34
         %33 = OpLabel
               OpStore %8 %35
               OpBranch %34
         %34 = OpLabel
               OpBranch %27
         %27 = OpLabel
         %36 = OpLoad %6 %8
               OpSelectionMerge %38 None
               OpBranchConditional %36 %37 %62
         %37 = OpLabel
         %48 = OpAccessChain %47 %46 %16 %16
         %49 = OpLoad %15 %48
         %50 = OpConvertSToF %10 %49
         %52 = OpAccessChain %47 %46 %16 %51
         %53 = OpLoad %15 %52
         %54 = OpConvertSToF %10 %53
         %55 = OpAccessChain %47 %46 %16 %51
         %56 = OpLoad %15 %55
         %57 = OpConvertSToF %10 %56
         %58 = OpAccessChain %47 %46 %16 %16
         %59 = OpLoad %15 %58
         %60 = OpConvertSToF %10 %59
         %61 = OpCompositeConstruct %39 %50 %54 %57 %60
               OpStore %41 %61
               OpBranch %38
         %62 = OpLabel
         %63 = OpAccessChain %47 %46 %16 %51
         %64 = OpLoad %15 %63
         %65 = OpConvertSToF %10 %64
         %66 = OpCompositeConstruct %39 %65 %65 %65 %65
               OpStore %41 %66
               OpBranch %38
         %38 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# v1
BUFFER variant_v1 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
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_v1 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