#!amber

# Copyright 2019 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 bug found by GraphicsFuzz.

# Short description: A fragment shader with wrong color write in false if

# The test passes because the shader always writes color red.
# Wrong color mix and write is inside a false if statement.

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 310 es
# precision highp float;
#
# precision highp int;
#
# layout(location = 0) out vec4 _GLF_color;
#
# layout(set = 0, binding = 0) uniform buf0
# {
#     vec2 injectionSwitch;
# };
#
# void main()
# {
#     float height;
#     height = 256.0;
#
#     if (injectionSwitch.y < 0.0) // always false
#     {
#         _GLF_color = mix(vec4(30.18, 8840.7235, 469.970, 18.24), vec4(9.9, 0.1, 1169.5387, 55.79), vec4(7612.9451, 797.011, height, 9.0));
#     }
#
#     _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // Write color red
# }
SHADER fragment variant_fragment_shader SPIRV-ASM
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 7
; Bound: 47
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %28
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "height"
               OpName %11 "buf0"
               OpMemberName %11 0 "injectionSwitch"
               OpName %13 ""
               OpName %28 "_GLF_color"
               OpMemberDecorate %11 0 Offset 0
               OpDecorate %11 Block
               OpDecorate %13 DescriptorSet 0
               OpDecorate %13 Binding 0
               OpDecorate %28 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpConstant %6 256
         %10 = OpTypeVector %6 2
         %11 = OpTypeStruct %10
         %12 = OpTypePointer Uniform %11
         %13 = OpVariable %12 Uniform
         %14 = OpTypeInt 32 1
         %15 = OpConstant %14 0
         %16 = OpTypeInt 32 0
         %17 = OpConstant %16 1
         %18 = OpTypePointer Uniform %6
         %21 = OpConstant %6 0
         %22 = OpTypeBool
         %26 = OpTypeVector %6 4
         %27 = OpTypePointer Output %26
         %28 = OpVariable %27 Output
         %29 = OpConstant %6 30.1800003
         %30 = OpConstant %6 8840.72363
         %31 = OpConstant %6 469.970001
         %32 = OpConstant %6 18.2399998
         %33 = OpConstantComposite %26 %29 %30 %31 %32
         %34 = OpConstant %6 9.89999962
         %35 = OpConstant %6 0.100000001
         %36 = OpConstant %6 1169.5387
         %37 = OpConstant %6 55.7900009
         %38 = OpConstantComposite %26 %34 %35 %36 %37
         %39 = OpConstant %6 7612.94531
         %40 = OpConstant %6 797.010986
         %42 = OpConstant %6 9
         %45 = OpConstant %6 1
         %46 = OpConstantComposite %26 %45 %21 %21 %45
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
               OpStore %8 %9
         %19 = OpAccessChain %18 %13 %15 %17
         %20 = OpLoad %6 %19
         %23 = OpFOrdLessThan %22 %20 %21
               OpSelectionMerge %25 None
               OpBranchConditional %23 %24 %25
         %24 = OpLabel
         %41 = OpLoad %6 %8
         %43 = OpCompositeConstruct %26 %39 %40 %41 %42
         %44 = OpExtInst %26 %1 FMix %33 %38 %43
               OpStore %28 %44
               OpBranch %25
         %25 = OpLabel
               OpStore %28 %46
               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