3 # Copyright 2020 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 coverage-gap found by the GraphicsFuzz project.
20 # Short description: A fragment shader that covers a specific value tracking path
22 # The test passes because the shader always writes red.
24 SHADER vertex variant_vertex_shader PASSTHROUGH
26 # variant_fragment_shader is derived from the following GLSL:
28 # #define _float_0_0 _GLF_uniform_float_values[0]
29 # #define _float_1_0 _GLF_uniform_float_values[1]
31 # precision highp float;
33 # // Contents of _GLF_uniform_float_values: [0.0, 1.0]
34 # layout(set = 0, binding = 0) uniform buf0
36 # float _GLF_uniform_float_values[2];
39 # layout(location = 0) out vec4 _GLF_color;
44 # if (inversesqrt(_float_1_0) < -1.0)
46 # _GLF_color = vec4(_float_0_0);
50 # _GLF_color = vec4(_float_1_0, _float_0_0, _float_0_0, _float_1_0);
53 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
56 ; Generator: Khronos Glslang Reference Front End; 8
60 %1 = OpExtInstImport "GLSL.std.450"
61 OpMemoryModel Logical GLSL450
62 OpEntryPoint Fragment %4 "main" %27
63 OpExecutionMode %4 OriginUpperLeft
67 OpMemberName %10 0 "_GLF_uniform_float_values"
69 OpName %27 "_GLF_color"
70 OpDecorate %9 ArrayStride 16
71 OpMemberDecorate %10 0 Offset 0
73 OpDecorate %12 DescriptorSet 0
74 OpDecorate %12 Binding 0
75 OpDecorate %27 Location 0
77 %3 = OpTypeFunction %2
81 %9 = OpTypeArray %6 %8
83 %11 = OpTypePointer Uniform %10
84 %12 = OpVariable %11 Uniform
86 %14 = OpConstant %13 0
87 %15 = OpConstant %13 1
88 %16 = OpTypePointer Uniform %6
89 %20 = OpConstant %6 -1
91 %25 = OpTypeVector %6 4
92 %26 = OpTypePointer Output %25
93 %27 = OpVariable %26 Output
94 %4 = OpFunction %2 None %3
96 %17 = OpAccessChain %16 %12 %14 %15
98 %19 = OpExtInst %6 %1 InverseSqrt %18
99 %22 = OpFOrdLessThan %21 %19 %20
100 OpSelectionMerge %24 None
101 OpBranchConditional %22 %23 %31
103 %28 = OpAccessChain %16 %12 %14 %14
105 %30 = OpCompositeConstruct %25 %29 %29 %29 %29
109 %32 = OpAccessChain %16 %12 %14 %15
111 %34 = OpAccessChain %16 %12 %14 %14
113 %36 = OpAccessChain %16 %12 %14 %14
115 %38 = OpAccessChain %16 %12 %14 %15
117 %40 = OpCompositeConstruct %25 %33 %35 %37 %39
125 # uniforms for variant
127 # _GLF_uniform_float_values
128 BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
132 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
134 PIPELINE graphics variant_pipeline
135 ATTACH variant_vertex_shader
136 ATTACH variant_fragment_shader
137 FRAMEBUFFER_SIZE 256 256
138 BIND BUFFER variant_framebuffer AS color LOCATION 0
139 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
141 CLEAR_COLOR variant_pipeline 0 0 0 255
143 CLEAR variant_pipeline
144 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
146 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255