#!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 instruction simplification 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(location = 0) out vec4 _GLF_color;
# layout(set = 0, binding = 0) uniform buf0
# {
#     int one;
# };
#
# void main()
# {
#   if (sign(cosh(709.)) == 1. || one == 1)
#   {
#     _GLF_color = vec4(1, 0, 0, 1);
#   }
#   else
#   {
#     _GLF_color = vec4(1);
#   }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 36
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %31
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %17 "buf0"
               OpMemberName %17 0 "one"
               OpName %19 ""
               OpName %31 "_GLF_color"
               OpMemberDecorate %17 0 RelaxedPrecision
               OpMemberDecorate %17 0 Offset 0
               OpDecorate %17 Block
               OpDecorate %19 DescriptorSet 0
               OpDecorate %19 Binding 0
               OpDecorate %23 RelaxedPrecision
               OpDecorate %31 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeBool
          %7 = OpTypeFloat 32
          %8 = OpConstant %7 709
         %11 = OpConstant %7 1
         %16 = OpTypeInt 32 1
         %17 = OpTypeStruct %16
         %18 = OpTypePointer Uniform %17
         %19 = OpVariable %18 Uniform
         %20 = OpConstant %16 0
         %21 = OpTypePointer Uniform %16
         %24 = OpConstant %16 1
         %29 = OpTypeVector %7 4
         %30 = OpTypePointer Output %29
         %31 = OpVariable %30 Output
         %32 = OpConstant %7 0
         %33 = OpConstantComposite %29 %11 %32 %32 %11
         %35 = OpConstantComposite %29 %11 %11 %11 %11
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %9 = OpExtInst %7 %1 Cosh %8
         %10 = OpExtInst %7 %1 FSign %9
         %12 = OpFOrdEqual %6 %10 %11
         %13 = OpLogicalNot %6 %12
               OpSelectionMerge %15 None
               OpBranchConditional %13 %14 %15
         %14 = OpLabel
         %22 = OpAccessChain %21 %19 %20
         %23 = OpLoad %16 %22
         %25 = OpIEqual %6 %23 %24
               OpBranch %15
         %15 = OpLabel
         %26 = OpPhi %6 %12 %5 %25 %14
               OpSelectionMerge %28 None
               OpBranchConditional %26 %27 %34
         %27 = OpLabel
               OpStore %31 %33
               OpBranch %28
         %34 = OpLabel
               OpStore %31 %35
               OpBranch %28
         %28 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# one
BUFFER variant_one DATA_TYPE int32 DATA
 1
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_one 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