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 const folding 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 _int_0 _GLF_uniform_int_values[0]
29 # #define _int_1 _GLF_uniform_int_values[1]
31 # precision highp float;
32 # precision highp int;
34 # // Contents of _GLF_uniform_int_values: [0, 1]
35 # layout(set = 0, binding = 0) uniform buf0
37 # int _GLF_uniform_int_values[2];
40 # layout(location = 0) out vec4 _GLF_color;
44 # if (mod(1.0, 1.0) <= 0.01)
46 # _GLF_color = vec4(1, _int_0, _int_0, _int_1);
50 # _GLF_color = vec4(_int_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" %16
63 OpExecutionMode %4 OriginUpperLeft
66 OpName %16 "_GLF_color"
68 OpMemberName %21 0 "_GLF_uniform_int_values"
70 OpDecorate %16 Location 0
71 OpDecorate %20 ArrayStride 16
72 OpMemberDecorate %21 0 Offset 0
74 OpDecorate %23 DescriptorSet 0
75 OpDecorate %23 Binding 0
77 %3 = OpTypeFunction %2
80 %9 = OpConstant %6 0.00999999978
82 %14 = OpTypeVector %6 4
83 %15 = OpTypePointer Output %14
84 %16 = OpVariable %15 Output
87 %19 = OpConstant %18 2
88 %20 = OpTypeArray %17 %19
89 %21 = OpTypeStruct %20
90 %22 = OpTypePointer Uniform %21
91 %23 = OpVariable %22 Uniform
92 %24 = OpConstant %17 0
93 %25 = OpTypePointer Uniform %17
94 %32 = OpConstant %17 1
95 %4 = OpFunction %2 None %3
98 %11 = OpFOrdLessThanEqual %10 %8 %9
99 OpSelectionMerge %13 None
100 OpBranchConditional %11 %12 %37
102 %26 = OpAccessChain %25 %23 %24 %24
104 %28 = OpConvertSToF %6 %27
105 %29 = OpAccessChain %25 %23 %24 %24
107 %31 = OpConvertSToF %6 %30
108 %33 = OpAccessChain %25 %23 %24 %32
110 %35 = OpConvertSToF %6 %34
111 %36 = OpCompositeConstruct %14 %7 %28 %31 %35
115 %38 = OpAccessChain %25 %23 %24 %24
117 %40 = OpConvertSToF %6 %39
118 %41 = OpCompositeConstruct %14 %40 %40 %40 %40
126 # uniforms for variant
128 # _GLF_uniform_int_values
129 BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
133 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
135 PIPELINE graphics variant_pipeline
136 ATTACH variant_vertex_shader
137 ATTACH variant_fragment_shader
138 FRAMEBUFFER_SIZE 256 256
139 BIND BUFFER variant_framebuffer AS color LOCATION 0
140 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
142 CLEAR_COLOR variant_pipeline 0 0 0 255
144 CLEAR variant_pipeline
145 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
147 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255