#!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 GraphicsFuzz.

# Short description: A fragment shader that covers a specific const folding 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
# precision highp float;
#
# layout(set = 0, binding = 0) uniform buf0 {
#     vec2 injectionSwitch;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     float f = sinh(724.322);
#
#     // Always true.
#     // injectionSwitch.x == 0.0.
#     // injectionSwitch.y == 1.0.
#     if (isinf(f) || injectionSwitch.x < injectionSwitch.y)
#         _GLF_color = vec4(1, 0, 0, 1);
#     else
#         _GLF_color = vec4(0);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 43
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %37
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "f"
               OpName %18 "buf0"
               OpMemberName %18 0 "injectionSwitch"
               OpName %20 ""
               OpName %37 "_GLF_color"
               OpMemberDecorate %18 0 Offset 0
               OpDecorate %18 Block
               OpDecorate %20 DescriptorSet 0
               OpDecorate %20 Binding 0
               OpDecorate %37 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpConstant %6 724.322021
         %11 = OpTypeBool
         %17 = OpTypeVector %6 2
         %18 = OpTypeStruct %17
         %19 = OpTypePointer Uniform %18
         %20 = OpVariable %19 Uniform
         %21 = OpTypeInt 32 1
         %22 = OpConstant %21 0
         %23 = OpTypeInt 32 0
         %24 = OpConstant %23 0
         %25 = OpTypePointer Uniform %6
         %28 = OpConstant %23 1
         %35 = OpTypeVector %6 4
         %36 = OpTypePointer Output %35
         %37 = OpVariable %36 Output
         %38 = OpConstant %6 1
         %39 = OpConstant %6 0
         %40 = OpConstantComposite %35 %38 %39 %39 %38
         %42 = OpConstantComposite %35 %39 %39 %39 %39
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %10 = OpExtInst %6 %1 Sinh %9
               OpStore %8 %10
         %12 = OpLoad %6 %8
         %13 = OpIsInf %11 %12
         %14 = OpLogicalNot %11 %13
               OpSelectionMerge %16 None
               OpBranchConditional %14 %15 %16
         %15 = OpLabel
         %26 = OpAccessChain %25 %20 %22 %24
         %27 = OpLoad %6 %26
         %29 = OpAccessChain %25 %20 %22 %28
         %30 = OpLoad %6 %29
         %31 = OpFOrdLessThan %11 %27 %30
               OpBranch %16
         %16 = OpLabel
         %32 = OpPhi %11 %13 %5 %31 %15
               OpSelectionMerge %34 None
               OpBranchConditional %32 %33 %41
         %33 = OpLabel
               OpStore %37 %40
               OpBranch %34
         %41 = OpLabel
               OpStore %37 %42
               OpBranch %34
         %34 = OpLabel
               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