1#!amber
2
3# Copyright 2022 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 the GraphicsFuzz project.
19
20# Short description: A fragment shader that covers specific LLVM code paths
21
22# The test passes because the shader always writes red.
23
24# Optimized using spirv-opt with the following arguments:
25# '-Os'
26# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af
27
28
29
30SHADER vertex variant_vertex_shader PASSTHROUGH
31
32# variant_fragment_shader is derived from the following GLSL:
33# #version 320 es
34# #define _int_1 _GLF_uniform_int_values[0]
35# #define _int_0 _GLF_uniform_int_values[1]
36# #define _float_0_0 _GLF_uniform_float_values[0]
37#
38# precision highp float;
39# precision highp int;
40#
41# // Contents of _GLF_uniform_int_values: [1, 0]
42# layout(set = 0, binding = 0) uniform buf0
43# {
44#     int _GLF_uniform_int_values[2];
45# };
46#
47# // Contents of _GLF_uniform_float_values: 0.0
48# layout(set = 0, binding = 1) uniform buf1
49# {
50#     float _GLF_uniform_float_values[1];
51# };
52#
53# layout(location = 0) out vec4 _GLF_color;
54#
55# void main()
56# {
57#     // Always true. The line below simplifies to
58#     // min(vec2(1, 1), vec2(transpose(mat2(1)))).y = min(vec2(1, 1), vec2(mat2(1))).y
59#     // = min(vec2(1, 1), vec2(1, 0)).y = vec2(1, 0).y = 0.
60#     if(min(vec2(1), vec2(transpose(mat2(_int_1)))).y == _float_0_0)
61#     {
62#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
63#     }
64#     else
65#     {
66#         _GLF_color = vec4(_int_0);
67#     }
68# }
69SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
70; SPIR-V
71; Version: 1.0
72; Generator: Khronos Glslang Reference Front End; 10
73; Bound: 68
74; Schema: 0
75               OpCapability Shader
76          %1 = OpExtInstImport "GLSL.std.450"
77               OpMemoryModel Logical GLSL450
78               OpEntryPoint Fragment %4 "main" %47
79               OpExecutionMode %4 OriginUpperLeft
80               OpSource ESSL 320
81               OpName %4 "main"
82               OpName %14 "buf0"
83               OpMemberName %14 0 "_GLF_uniform_int_values"
84               OpName %16 ""
85               OpName %35 "buf1"
86               OpMemberName %35 0 "_GLF_uniform_float_values"
87               OpName %37 ""
88               OpName %47 "_GLF_color"
89               OpDecorate %13 ArrayStride 16
90               OpMemberDecorate %14 0 Offset 0
91               OpDecorate %14 Block
92               OpDecorate %16 DescriptorSet 0
93               OpDecorate %16 Binding 0
94               OpDecorate %34 ArrayStride 16
95               OpMemberDecorate %35 0 Offset 0
96               OpDecorate %35 Block
97               OpDecorate %37 DescriptorSet 0
98               OpDecorate %37 Binding 1
99               OpDecorate %47 Location 0
100          %2 = OpTypeVoid
101          %3 = OpTypeFunction %2
102          %6 = OpTypeFloat 32
103          %7 = OpTypeVector %6 2
104          %8 = OpConstant %6 1
105          %9 = OpConstantComposite %7 %8 %8
106         %10 = OpTypeInt 32 1
107         %11 = OpTypeInt 32 0
108         %12 = OpConstant %11 2
109         %13 = OpTypeArray %10 %12
110         %14 = OpTypeStruct %13
111         %15 = OpTypePointer Uniform %14
112         %16 = OpVariable %15 Uniform
113         %17 = OpConstant %10 0
114         %18 = OpTypePointer Uniform %10
115         %22 = OpTypeMatrix %7 2
116         %23 = OpConstant %6 0
117         %32 = OpConstant %11 1
118         %34 = OpTypeArray %6 %32
119         %35 = OpTypeStruct %34
120         %36 = OpTypePointer Uniform %35
121         %37 = OpVariable %36 Uniform
122         %38 = OpTypePointer Uniform %6
123         %41 = OpTypeBool
124         %45 = OpTypeVector %6 4
125         %46 = OpTypePointer Output %45
126         %47 = OpVariable %46 Output
127         %51 = OpConstant %10 1
128         %67 = OpUndef %6
129          %4 = OpFunction %2 None %3
130          %5 = OpLabel
131         %19 = OpAccessChain %18 %16 %17 %17
132         %20 = OpLoad %10 %19
133         %21 = OpConvertSToF %6 %20
134         %24 = OpCompositeConstruct %7 %21 %23
135         %25 = OpCompositeConstruct %7 %23 %21
136         %26 = OpCompositeConstruct %22 %24 %25
137         %27 = OpTranspose %22 %26
138         %29 = OpCompositeExtract %6 %27 0 1
139         %30 = OpCompositeConstruct %7 %67 %29
140         %31 = OpExtInst %7 %1 FMin %9 %30
141         %33 = OpCompositeExtract %6 %31 1
142         %39 = OpAccessChain %38 %37 %17 %17
143         %40 = OpLoad %6 %39
144         %42 = OpFOrdEqual %41 %33 %40
145               OpSelectionMerge %44 None
146               OpBranchConditional %42 %43 %62
147         %43 = OpLabel
148         %52 = OpAccessChain %18 %16 %17 %51
149         %53 = OpLoad %10 %52
150         %54 = OpConvertSToF %6 %53
151         %61 = OpCompositeConstruct %45 %21 %54 %54 %21
152               OpStore %47 %61
153               OpBranch %44
154         %62 = OpLabel
155         %63 = OpAccessChain %18 %16 %17 %51
156         %64 = OpLoad %10 %63
157         %65 = OpConvertSToF %6 %64
158         %66 = OpCompositeConstruct %45 %65 %65 %65 %65
159               OpStore %47 %66
160               OpBranch %44
161         %44 = OpLabel
162               OpReturn
163               OpFunctionEnd
164END
165
166# uniforms for variant
167
168# _GLF_uniform_float_values
169BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
170 0.0
171END
172# _GLF_uniform_int_values
173BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
174 1 0
175END
176
177BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
178
179PIPELINE graphics variant_pipeline
180  ATTACH variant_vertex_shader
181  ATTACH variant_fragment_shader
182  FRAMEBUFFER_SIZE 32 32
183  BIND BUFFER variant_framebuffer AS color LOCATION 0
184  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
185  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
186END
187CLEAR_COLOR variant_pipeline 0 0 0 255
188
189CLEAR variant_pipeline
190RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32
191
192EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255
193