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1#!amber
2
3# Copyright 2020 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 coverage-gap found by GraphicsFuzz.
19
20# Short description: A fragment shader that covers a specific const folding path
21
22# The test passes because the shader always writes 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# layout(set = 0, binding = 0) uniform buf0
32# {
33#     vec4 ref;
34# };
35#
36# void main()
37# {
38#     // f becomes 1.
39#     float f = determinant(mat3(1.0));
40#     vec4 v = vec4(sin(f), cos(f), exp2(f), log(f));
41#
42#     if (distance(v, ref) < 0.1)
43#         _GLF_color = vec4(1, 0, 0, 1);
44#     else
45#         _GLF_color = vec4(0);
46# }
47SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
48; SPIR-V
49; Version: 1.0
50; Generator: Khronos Glslang Reference Front End; 8
51; Bound: 50
52; Schema: 0
53               OpCapability Shader
54          %1 = OpExtInstImport "GLSL.std.450"
55               OpMemoryModel Logical GLSL450
56               OpEntryPoint Fragment %4 "main" %46
57               OpExecutionMode %4 OriginUpperLeft
58               OpSource ESSL 310
59               OpName %4 "main"
60               OpName %8 "f"
61               OpName %20 "v"
62               OpName %31 "buf0"
63               OpMemberName %31 0 "ref"
64               OpName %33 ""
65               OpName %46 "_GLF_color"
66               OpMemberDecorate %31 0 Offset 0
67               OpDecorate %31 Block
68               OpDecorate %33 DescriptorSet 0
69               OpDecorate %33 Binding 0
70               OpDecorate %46 Location 0
71          %2 = OpTypeVoid
72          %3 = OpTypeFunction %2
73          %6 = OpTypeFloat 32
74          %7 = OpTypePointer Function %6
75          %9 = OpTypeVector %6 3
76         %10 = OpTypeMatrix %9 3
77         %11 = OpConstant %6 1
78         %12 = OpConstant %6 0
79         %13 = OpConstantComposite %9 %11 %12 %12
80         %14 = OpConstantComposite %9 %12 %11 %12
81         %15 = OpConstantComposite %9 %12 %12 %11
82         %16 = OpConstantComposite %10 %13 %14 %15
83         %18 = OpTypeVector %6 4
84         %19 = OpTypePointer Function %18
85         %31 = OpTypeStruct %18
86         %32 = OpTypePointer Uniform %31
87         %33 = OpVariable %32 Uniform
88         %34 = OpTypeInt 32 1
89         %35 = OpConstant %34 0
90         %36 = OpTypePointer Uniform %18
91         %40 = OpConstant %6 0.100000001
92         %41 = OpTypeBool
93         %45 = OpTypePointer Output %18
94         %46 = OpVariable %45 Output
95         %47 = OpConstantComposite %18 %11 %12 %12 %11
96         %49 = OpConstantComposite %18 %12 %12 %12 %12
97          %4 = OpFunction %2 None %3
98          %5 = OpLabel
99          %8 = OpVariable %7 Function
100         %20 = OpVariable %19 Function
101         %17 = OpExtInst %6 %1 Determinant %16
102               OpStore %8 %17
103         %21 = OpLoad %6 %8
104         %22 = OpExtInst %6 %1 Sin %21
105         %23 = OpLoad %6 %8
106         %24 = OpExtInst %6 %1 Cos %23
107         %25 = OpLoad %6 %8
108         %26 = OpExtInst %6 %1 Exp2 %25
109         %27 = OpLoad %6 %8
110         %28 = OpExtInst %6 %1 Log %27
111         %29 = OpCompositeConstruct %18 %22 %24 %26 %28
112               OpStore %20 %29
113         %30 = OpLoad %18 %20
114         %37 = OpAccessChain %36 %33 %35
115         %38 = OpLoad %18 %37
116         %39 = OpExtInst %6 %1 Distance %30 %38
117         %42 = OpFOrdLessThan %41 %39 %40
118               OpSelectionMerge %44 None
119               OpBranchConditional %42 %43 %48
120         %43 = OpLabel
121               OpStore %46 %47
122               OpBranch %44
123         %48 = OpLabel
124               OpStore %46 %49
125               OpBranch %44
126         %44 = OpLabel
127               OpReturn
128               OpFunctionEnd
129END
130
131# uniforms for variant
132
133# ref
134BUFFER variant_ref DATA_TYPE vec4<float> DATA
135 0.84 0.54 2.0 0.0
136END
137
138BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
139
140PIPELINE graphics variant_pipeline
141  ATTACH variant_vertex_shader
142  ATTACH variant_fragment_shader
143  FRAMEBUFFER_SIZE 256 256
144  BIND BUFFER variant_framebuffer AS color LOCATION 0
145  BIND BUFFER variant_ref AS uniform DESCRIPTOR_SET 0 BINDING 0
146END
147CLEAR_COLOR variant_pipeline 0 0 0 255
148
149CLEAR variant_pipeline
150RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
151
152EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
153