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1#!amber
2
3# Copyright 2019 Google LLC
4#
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
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
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.
16
17
18# A test for a bug found by GraphicsFuzz.
19
20# Short description: A fragment shader with mix, uintBitsToFloat, and floor
21
22# The test passes because the fragment shader computes a value and then writes the color red.
23
24SHADER vertex variant_vertex_shader PASSTHROUGH
25
26# variant_fragment_shader is derived from the following GLSL:
27# #version 310 es
28# precision highp float;
29#
30# layout(location = 0) out vec4 _GLF_color;
31#
32# vec3 GLF_live6mand()
33# {
34#     return mix(uintBitsToFloat(uvec3(38730u, 63193u, 63173u)), floor(vec3(463.499, 4.7, 0.7)), vec3(1.0) + vec3(1.0));
35# }
36# void main()
37# {
38#     GLF_live6mand();
39#     _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
40# }
41SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
42; SPIR-V
43; Version: 1.0
44; Generator: Khronos Glslang Reference Front End; 7
45; Bound: 33
46; Schema: 0
47               OpCapability Shader
48          %1 = OpExtInstImport "GLSL.std.450"
49               OpMemoryModel Logical GLSL450
50               OpEntryPoint Fragment %4 "main" %30
51               OpExecutionMode %4 OriginUpperLeft
52               OpSource ESSL 310
53               OpName %4 "main"
54               OpName %9 "GLF_live6mand("
55               OpName %30 "_GLF_color"
56               OpDecorate %30 Location 0
57          %2 = OpTypeVoid
58          %3 = OpTypeFunction %2
59          %6 = OpTypeFloat 32
60          %7 = OpTypeVector %6 3
61          %8 = OpTypeFunction %7
62         %11 = OpTypeInt 32 0
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
69         %19 = OpConstant %6 4
70         %20 = OpConstant %6 0
71         %21 = OpConstantComposite %7 %18 %19 %20
72         %22 = OpConstant %6 2
73         %23 = OpConstantComposite %7 %22 %22 %22
74         %28 = OpTypeVector %6 4
75         %29 = OpTypePointer Output %28
76         %30 = OpVariable %29 Output
77         %31 = OpConstant %6 1
78         %32 = OpConstantComposite %28 %31 %20 %20 %31
79          %4 = OpFunction %2 None %3
80          %5 = OpLabel
81         %27 = OpFunctionCall %7 %9
82               OpStore %30 %32
83               OpReturn
84               OpFunctionEnd
85          %9 = OpFunction %7 None %8
86         %10 = OpLabel
87         %17 = OpBitcast %7 %16
88         %24 = OpExtInst %7 %1 FMix %17 %21 %23
89               OpReturnValue %24
90               OpFunctionEnd
91END
92
93# uniforms for variant
94
95
96BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
97
98PIPELINE 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
103END
104CLEAR_COLOR variant_pipeline 0 0 0 255
105
106CLEAR variant_pipeline
107RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
108
109EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
110