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 GraphicsFuzz.
20 # Short description: A fragment shader that covers a specific AP float code path.
22 # The test passes because shader always writes red.
24 SHADER vertex variant_vertex_shader PASSTHROUGH
26 # variant_fragment_shader is derived from the following GLSL:
28 # precision highp float;
29 # precision highp int;
31 # layout(location = 0) out vec4 _GLF_color;
32 # layout(set = 0, binding = 0) uniform buf0
39 # vec2 v = acos(ldexp(vec2(0.1), ivec2(two, 3)));
40 # float d = distance(v, vec2(1.15928, 0.64350));
43 # _GLF_color = vec4(1, 0, 0, 1);
45 # _GLF_color = vec4(0);
47 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
50 ; Generator: Khronos Glslang Reference Front End; 8
54 %1 = OpExtInstImport "GLSL.std.450"
55 OpMemoryModel Logical GLSL450
56 OpEntryPoint Fragment %4 "main" %40
57 OpExecutionMode %4 OriginUpperLeft
62 OpMemberName %13 0 "two"
65 OpName %40 "_GLF_color"
66 OpMemberDecorate %13 0 Offset 0
68 OpDecorate %15 DescriptorSet 0
69 OpDecorate %15 Binding 0
70 OpDecorate %40 Location 0
72 %3 = OpTypeFunction %2
74 %7 = OpTypeVector %6 2
75 %8 = OpTypePointer Function %7
76 %10 = OpConstant %6 0.100000001
77 %11 = OpConstantComposite %7 %10 %10
79 %13 = OpTypeStruct %12
80 %14 = OpTypePointer Uniform %13
81 %15 = OpVariable %14 Uniform
82 %16 = OpConstant %12 0
83 %17 = OpTypePointer Uniform %12
84 %20 = OpConstant %12 3
85 %21 = OpTypeVector %12 2
86 %25 = OpTypePointer Function %6
87 %28 = OpConstant %6 1.15927994
88 %29 = OpConstant %6 0.64349997
89 %30 = OpConstantComposite %7 %28 %29
90 %33 = OpConstant %6 0.00999999978
92 %38 = OpTypeVector %6 4
93 %39 = OpTypePointer Output %38
94 %40 = OpVariable %39 Output
97 %43 = OpConstantComposite %38 %41 %42 %42 %41
98 %45 = OpConstantComposite %38 %42 %42 %42 %42
99 %4 = OpFunction %2 None %3
101 %9 = OpVariable %8 Function
102 %26 = OpVariable %25 Function
103 %18 = OpAccessChain %17 %15 %16
105 %22 = OpCompositeConstruct %21 %19 %20
106 %23 = OpExtInst %7 %1 Ldexp %11 %22
107 %24 = OpExtInst %7 %1 Acos %23
110 %31 = OpExtInst %6 %1 Distance %27 %30
113 %35 = OpFOrdLessThan %34 %32 %33
114 OpSelectionMerge %37 None
115 OpBranchConditional %35 %36 %44
127 # uniforms for variant
130 BUFFER variant_two DATA_TYPE int32 DATA
134 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
136 PIPELINE graphics variant_pipeline
137 ATTACH variant_vertex_shader
138 ATTACH variant_fragment_shader
139 FRAMEBUFFER_SIZE 256 256
140 BIND BUFFER variant_framebuffer AS color LOCATION 0
141 BIND BUFFER variant_two AS uniform DESCRIPTOR_SET 0 BINDING 0
143 CLEAR_COLOR variant_pipeline 0 0 0 255
145 CLEAR variant_pipeline
146 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
148 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255