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 APFloat code 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:
29 # precision highp int;
31 # precision highp float;
33 # layout(location = 0) out vec4 _GLF_color;
37 # vec2 v1 = vec2(1.0, -1.0);
39 # // v2 becomes [1.0, 0.0].
40 # vec2 v2 = step(0.4, sinh(v1));
41 # _GLF_color = vec4(v2.x, v2.y, v2.y, v2.x);
43 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
46 ; Generator: Khronos Glslang Reference Front End; 10
50 %1 = OpExtInstImport "GLSL.std.450"
51 OpMemoryModel Logical GLSL450
52 OpEntryPoint Fragment %4 "main" %21
53 OpExecutionMode %4 OriginUpperLeft
58 OpName %21 "_GLF_color"
59 OpDecorate %21 Location 0
61 %3 = OpTypeFunction %2
63 %7 = OpTypeVector %6 2
64 %8 = OpTypePointer Function %7
66 %11 = OpConstant %6 -1
67 %12 = OpConstantComposite %7 %10 %11
68 %14 = OpConstant %6 0.400000006
69 %19 = OpTypeVector %6 4
70 %20 = OpTypePointer Output %19
71 %21 = OpVariable %20 Output
73 %23 = OpConstant %22 0
74 %24 = OpTypePointer Function %6
75 %27 = OpConstant %22 1
76 %4 = OpFunction %2 None %3
78 %9 = OpVariable %8 Function
79 %13 = OpVariable %8 Function
82 %16 = OpExtInst %7 %1 Sinh %15
83 %17 = OpCompositeConstruct %7 %14 %14
84 %18 = OpExtInst %7 %1 Step %17 %16
86 %25 = OpAccessChain %24 %13 %23
88 %28 = OpAccessChain %24 %13 %27
90 %30 = OpAccessChain %24 %13 %27
92 %32 = OpAccessChain %24 %13 %23
94 %34 = OpCompositeConstruct %19 %26 %29 %31 %33
101 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
103 PIPELINE graphics variant_pipeline
104 ATTACH variant_vertex_shader
105 ATTACH variant_fragment_shader
106 FRAMEBUFFER_SIZE 256 256
107 BIND BUFFER variant_framebuffer AS color LOCATION 0
109 CLEAR_COLOR variant_pipeline 0 0 0 255
111 CLEAR variant_pipeline
112 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
114 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255