3 # Copyright 2019 Google LLC
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 # A test for a bug found by GraphicsFuzz.
20 # Short description: A fragment shader with a switch, if, and discard
22 # The test passes because the shader always writes the color red;
23 # the switch is always skipped.
25 SHADER vertex variant_vertex_shader PASSTHROUGH
27 # variant_fragment_shader is derived from the following GLSL:
29 # precision highp float;
31 # layout(set = 0, binding = 0) uniform buf0
33 # vec2 injectionSwitch;
36 # layout(location = 0) out vec4 _GLF_color;
40 # switch (int(injectionSwitch.y)) // always 1
43 # if (injectionSwitch.y > injectionSwitch.x)
48 # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
50 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
53 ; Generator: Khronos Glslang Reference Front End; 7
57 %1 = OpExtInstImport "GLSL.std.450"
58 OpMemoryModel Logical GLSL450
59 OpEntryPoint Fragment %4 "main" %34
60 OpExecutionMode %4 OriginUpperLeft
64 OpMemberName %8 0 "injectionSwitch"
66 OpName %34 "_GLF_color"
67 OpMemberDecorate %8 0 Offset 0
69 OpDecorate %10 DescriptorSet 0
70 OpDecorate %10 Binding 0
71 OpDecorate %34 Location 0
73 %3 = OpTypeFunction %2
75 %7 = OpTypeVector %6 2
77 %9 = OpTypePointer Uniform %8
78 %10 = OpVariable %9 Uniform
80 %12 = OpConstant %11 0
82 %14 = OpConstant %13 1
83 %15 = OpTypePointer Uniform %6
84 %23 = OpConstant %13 0
86 %32 = OpTypeVector %6 4
87 %33 = OpTypePointer Output %32
88 %34 = OpVariable %33 Output
91 %37 = OpConstantComposite %32 %35 %36 %36 %35
92 %4 = OpFunction %2 None %3
94 %16 = OpAccessChain %15 %10 %12 %14
96 %18 = OpConvertFToS %11 %17
97 OpSelectionMerge %20 None
98 OpSwitch %18 %20 -1 %19
100 %21 = OpAccessChain %15 %10 %12 %14
102 %24 = OpAccessChain %15 %10 %12 %23
104 %27 = OpFOrdGreaterThan %26 %22 %25
105 OpSelectionMerge %29 None
106 OpBranchConditional %27 %28 %29
117 # uniforms for variant
120 BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA
124 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
126 PIPELINE graphics variant_pipeline
127 ATTACH variant_vertex_shader
128 ATTACH variant_fragment_shader
129 FRAMEBUFFER_SIZE 256 256
130 BIND BUFFER variant_framebuffer AS color LOCATION 0
131 BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 0
133 CLEAR_COLOR variant_pipeline 0 0 0 255
135 CLEAR variant_pipeline
136 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
138 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255