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 mix, uintBitsToFloat, and floor
22 # The test passes because the fragment shader computes a value and then writes the color red.
24 SHADER vertex variant_vertex_shader PASSTHROUGH
26 # variant_fragment_shader is derived from the following GLSL:
28 # precision highp float;
30 # layout(location = 0) out vec4 _GLF_color;
32 # vec3 GLF_live6mand()
34 # return mix(uintBitsToFloat(uvec3(38730u, 63193u, 63173u)), floor(vec3(463.499, 4.7, 0.7)), vec3(1.0) + vec3(1.0));
39 # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
41 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
44 ; Generator: Khronos Glslang Reference Front End; 7
48 %1 = OpExtInstImport "GLSL.std.450"
49 OpMemoryModel Logical GLSL450
50 OpEntryPoint Fragment %4 "main" %30
51 OpExecutionMode %4 OriginUpperLeft
54 OpName %9 "GLF_live6mand("
55 OpName %30 "_GLF_color"
56 OpDecorate %30 Location 0
58 %3 = OpTypeFunction %2
60 %7 = OpTypeVector %6 3
61 %8 = OpTypeFunction %7
63 %12 = OpTypeVector %11 3
64 %13 = OpConstant %11 38730
65 %14 = OpConstant %11 63193
66 %15 = OpConstant %11 63173
67 %16 = OpConstantComposite %12 %13 %14 %15
68 %18 = OpConstant %6 463
71 %21 = OpConstantComposite %7 %18 %19 %20
73 %23 = OpConstantComposite %7 %22 %22 %22
74 %28 = OpTypeVector %6 4
75 %29 = OpTypePointer Output %28
76 %30 = OpVariable %29 Output
78 %32 = OpConstantComposite %28 %31 %20 %20 %31
79 %4 = OpFunction %2 None %3
81 %27 = OpFunctionCall %7 %9
85 %9 = OpFunction %7 None %8
87 %17 = OpBitcast %7 %16
88 %24 = OpExtInst %7 %1 FMix %17 %21 %23
93 # uniforms for variant
96 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
98 PIPELINE graphics variant_pipeline
99 ATTACH variant_vertex_shader
100 ATTACH variant_fragment_shader
101 FRAMEBUFFER_SIZE 256 256
102 BIND BUFFER variant_framebuffer AS color LOCATION 0
104 CLEAR_COLOR variant_pipeline 0 0 0 255
106 CLEAR variant_pipeline
107 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
109 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255