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
24SHADER vertex variant_vertex_shader PASSTHROUGH
25
26# variant_fragment_shader is derived from the following GLSL:
27# #version 320 es
28# #define _int_4 _GLF_uniform_int_values[0]
29# #define _int_2 _GLF_uniform_int_values[1]
30# #define _int_5 _GLF_uniform_int_values[2]
31# #define _int_1 _GLF_uniform_int_values[3]
32# #define _int_6 _GLF_uniform_int_values[4]
33# #define _int_0 _GLF_uniform_int_values[5]
34#
35# precision highp float;
36# precision highp int;
37#
38# // Contents of _GLF_uniform_int_values: [4, 2, 5, 1, 6, 0]
39# layout(set = 0, binding = 0) uniform buf0
40# {
41#     int _GLF_uniform_int_values[6];
42# };
43#
44# layout(location = 0) out vec4 _GLF_color;
45#
46# int func()
47# {
48#     int a = _int_1 << _int_6;
49#     // Returns 2.
50#     return clamp(a >> _int_5, a >> _int_5, _int_4);
51# }
52#
53# void main()
54# {
55#     // Always true.
56#     if(func() == _int_2)
57#     {
58#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
59#     }
60#     else
61#     {
62#         _GLF_color = vec4(_int_0);
63#     }
64# }
65SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
66; SPIR-V
67; Version: 1.0
68; Generator: Khronos Glslang Reference Front End; 10
69; Bound: 72
70; Schema: 0
71               OpCapability Shader
72          %1 = OpExtInstImport "GLSL.std.450"
73               OpMemoryModel Logical GLSL450
74               OpEntryPoint Fragment %4 "main" %52
75               OpExecutionMode %4 OriginUpperLeft
76               OpSource ESSL 320
77               OpName %4 "main"
78               OpName %8 "func("
79               OpName %11 "a"
80               OpName %15 "buf0"
81               OpMemberName %15 0 "_GLF_uniform_int_values"
82               OpName %17 ""
83               OpName %52 "_GLF_color"
84               OpDecorate %14 ArrayStride 16
85               OpMemberDecorate %15 0 Offset 0
86               OpDecorate %15 Block
87               OpDecorate %17 DescriptorSet 0
88               OpDecorate %17 Binding 0
89               OpDecorate %52 Location 0
90          %2 = OpTypeVoid
91          %3 = OpTypeFunction %2
92          %6 = OpTypeInt 32 1
93          %7 = OpTypeFunction %6
94         %10 = OpTypePointer Function %6
95         %12 = OpTypeInt 32 0
96         %13 = OpConstant %12 6
97         %14 = OpTypeArray %6 %13
98         %15 = OpTypeStruct %14
99         %16 = OpTypePointer Uniform %15
100         %17 = OpVariable %16 Uniform
101         %18 = OpConstant %6 0
102         %19 = OpConstant %6 3
103         %20 = OpTypePointer Uniform %6
104         %23 = OpConstant %6 4
105         %28 = OpConstant %6 2
106         %42 = OpConstant %6 1
107         %45 = OpTypeBool
108         %49 = OpTypeFloat 32
109         %50 = OpTypeVector %49 4
110         %51 = OpTypePointer Output %50
111         %52 = OpVariable %51 Output
112         %56 = OpConstant %6 5
113          %4 = OpFunction %2 None %3
114          %5 = OpLabel
115         %41 = OpFunctionCall %6 %8
116         %43 = OpAccessChain %20 %17 %18 %42
117         %44 = OpLoad %6 %43
118         %46 = OpIEqual %45 %41 %44
119               OpSelectionMerge %48 None
120               OpBranchConditional %46 %47 %67
121         %47 = OpLabel
122         %53 = OpAccessChain %20 %17 %18 %19
123         %54 = OpLoad %6 %53
124         %55 = OpConvertSToF %49 %54
125         %57 = OpAccessChain %20 %17 %18 %56
126         %58 = OpLoad %6 %57
127         %59 = OpConvertSToF %49 %58
128         %60 = OpAccessChain %20 %17 %18 %56
129         %61 = OpLoad %6 %60
130         %62 = OpConvertSToF %49 %61
131         %63 = OpAccessChain %20 %17 %18 %19
132         %64 = OpLoad %6 %63
133         %65 = OpConvertSToF %49 %64
134         %66 = OpCompositeConstruct %50 %55 %59 %62 %65
135               OpStore %52 %66
136               OpBranch %48
137         %67 = OpLabel
138         %68 = OpAccessChain %20 %17 %18 %56
139         %69 = OpLoad %6 %68
140         %70 = OpConvertSToF %49 %69
141         %71 = OpCompositeConstruct %50 %70 %70 %70 %70
142               OpStore %52 %71
143               OpBranch %48
144         %48 = OpLabel
145               OpReturn
146               OpFunctionEnd
147          %8 = OpFunction %6 None %7
148          %9 = OpLabel
149         %11 = OpVariable %10 Function
150         %21 = OpAccessChain %20 %17 %18 %19
151         %22 = OpLoad %6 %21
152         %24 = OpAccessChain %20 %17 %18 %23
153         %25 = OpLoad %6 %24
154         %26 = OpShiftLeftLogical %6 %22 %25
155               OpStore %11 %26
156         %27 = OpLoad %6 %11
157         %29 = OpAccessChain %20 %17 %18 %28
158         %30 = OpLoad %6 %29
159         %31 = OpShiftRightArithmetic %6 %27 %30
160         %32 = OpLoad %6 %11
161         %33 = OpAccessChain %20 %17 %18 %28
162         %34 = OpLoad %6 %33
163         %35 = OpShiftRightArithmetic %6 %32 %34
164         %36 = OpAccessChain %20 %17 %18 %18
165         %37 = OpLoad %6 %36
166         %38 = OpExtInst %6 %1 SClamp %31 %35 %37
167               OpReturnValue %38
168               OpFunctionEnd
169END
170
171# uniforms for variant
172
173# _GLF_uniform_int_values
174BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
175 4 2 5 1 6 0
176END
177
178BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
179
180PIPELINE graphics variant_pipeline
181  ATTACH variant_vertex_shader
182  ATTACH variant_fragment_shader
183  FRAMEBUFFER_SIZE 32 32
184  BIND BUFFER variant_framebuffer AS color LOCATION 0
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