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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 the GraphicsFuzz project.
19
20# Short description: A fragment shader that covers a specific inst combine shifts code 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# #define _int_1 _GLF_uniform_int_values[0]
29# #define _int_0 _GLF_uniform_int_values[1]
30# #define _float_1_0 _GLF_uniform_float_values[0]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_int_values: [1, 0]
36# layout(set = 0, binding = 1) uniform buf1
37# {
38#     int _GLF_uniform_int_values[2];
39# };
40#
41# layout(location = 0) out vec4 _GLF_color;
42#
43# void main()
44# {
45#     int idx = 1 << _int_0;
46#
47#     int a = int[2](_int_0, _int_1)[idx];
48#     if (a == _int_1)
49#     {
50#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
51#     }
52#     else
53#     {
54#         _GLF_color = vec4(_int_0);
55#     }
56# }
57SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
58; SPIR-V
59; Version: 1.0
60; Generator: Khronos Glslang Reference Front End; 10
61; Bound: 61
62; Schema: 0
63               OpCapability Shader
64          %1 = OpExtInstImport "GLSL.std.450"
65               OpMemoryModel Logical GLSL450
66               OpEntryPoint Fragment %4 "main" %42
67               OpExecutionMode %4 OriginUpperLeft
68               OpSource ESSL 310
69               OpName %4 "main"
70               OpName %8 "idx"
71               OpName %13 "buf1"
72               OpMemberName %13 0 "_GLF_uniform_int_values"
73               OpName %15 ""
74               OpName %21 "a"
75               OpName %29 "indexable"
76               OpName %42 "_GLF_color"
77               OpDecorate %12 ArrayStride 16
78               OpMemberDecorate %13 0 Offset 0
79               OpDecorate %13 Block
80               OpDecorate %15 DescriptorSet 0
81               OpDecorate %15 Binding 1
82               OpDecorate %42 Location 0
83          %2 = OpTypeVoid
84          %3 = OpTypeFunction %2
85          %6 = OpTypeInt 32 1
86          %7 = OpTypePointer Function %6
87          %9 = OpConstant %6 1
88         %10 = OpTypeInt 32 0
89         %11 = OpConstant %10 2
90         %12 = OpTypeArray %6 %11
91         %13 = OpTypeStruct %12
92         %14 = OpTypePointer Uniform %13
93         %15 = OpVariable %14 Uniform
94         %16 = OpConstant %6 0
95         %17 = OpTypePointer Uniform %6
96         %28 = OpTypePointer Function %12
97         %35 = OpTypeBool
98         %39 = OpTypeFloat 32
99         %40 = OpTypeVector %39 4
100         %41 = OpTypePointer Output %40
101         %42 = OpVariable %41 Output
102          %4 = OpFunction %2 None %3
103          %5 = OpLabel
104          %8 = OpVariable %7 Function
105         %21 = OpVariable %7 Function
106         %29 = OpVariable %28 Function
107         %18 = OpAccessChain %17 %15 %16 %9
108         %19 = OpLoad %6 %18
109         %20 = OpShiftLeftLogical %6 %9 %19
110               OpStore %8 %20
111         %22 = OpAccessChain %17 %15 %16 %9
112         %23 = OpLoad %6 %22
113         %24 = OpAccessChain %17 %15 %16 %16
114         %25 = OpLoad %6 %24
115         %26 = OpCompositeConstruct %12 %23 %25
116         %27 = OpLoad %6 %8
117               OpStore %29 %26
118         %30 = OpAccessChain %7 %29 %27
119         %31 = OpLoad %6 %30
120               OpStore %21 %31
121         %32 = OpLoad %6 %21
122         %33 = OpAccessChain %17 %15 %16 %16
123         %34 = OpLoad %6 %33
124         %36 = OpIEqual %35 %32 %34
125               OpSelectionMerge %38 None
126               OpBranchConditional %36 %37 %56
127         %37 = OpLabel
128         %43 = OpAccessChain %17 %15 %16 %16
129         %44 = OpLoad %6 %43
130         %45 = OpConvertSToF %39 %44
131         %46 = OpAccessChain %17 %15 %16 %9
132         %47 = OpLoad %6 %46
133         %48 = OpConvertSToF %39 %47
134         %49 = OpAccessChain %17 %15 %16 %9
135         %50 = OpLoad %6 %49
136         %51 = OpConvertSToF %39 %50
137         %52 = OpAccessChain %17 %15 %16 %16
138         %53 = OpLoad %6 %52
139         %54 = OpConvertSToF %39 %53
140         %55 = OpCompositeConstruct %40 %45 %48 %51 %54
141               OpStore %42 %55
142               OpBranch %38
143         %56 = OpLabel
144         %57 = OpAccessChain %17 %15 %16 %9
145         %58 = OpLoad %6 %57
146         %59 = OpConvertSToF %39 %58
147         %60 = OpCompositeConstruct %40 %59 %59 %59 %59
148               OpStore %42 %60
149               OpBranch %38
150         %38 = OpLabel
151               OpReturn
152               OpFunctionEnd
153END
154
155# uniforms for variant
156
157# _GLF_uniform_int_values
158BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
159 1 0
160END
161
162BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
163
164PIPELINE graphics variant_pipeline
165  ATTACH variant_vertex_shader
166  ATTACH variant_fragment_shader
167  FRAMEBUFFER_SIZE 256 256
168  BIND BUFFER variant_framebuffer AS color LOCATION 0
169  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
170END
171CLEAR_COLOR variant_pipeline 0 0 0 255
172
173CLEAR variant_pipeline
174RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
175
176EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
177