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 instruction combine compares 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_0 _GLF_uniform_int_values[0]
29# #define _int_1 _GLF_uniform_int_values[1]
30# #define _float_0_0 _GLF_uniform_float_values[0]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_float_values: 0.0
36# layout(set = 0, binding = 0) uniform buf0
37# {
38#     float _GLF_uniform_float_values[1];
39# };
40#
41# // Contents of _GLF_uniform_int_values: [0, 1]
42# layout(set = 0, binding = 1) uniform buf1
43# {
44#     int _GLF_uniform_int_values[2];
45# };
46#
47# layout(location = 0) out vec4 _GLF_color;
48#
49# void main()
50# {
51#     if (ldexp(_float_0_0, 10000) == _float_0_0)
52#     {
53#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
54#     }
55#     else
56#     {
57#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
58#     }
59# }
60SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
61; SPIR-V
62; Version: 1.0
63; Generator: Khronos Glslang Reference Front End; 8
64; Bound: 63
65; Schema: 0
66               OpCapability Shader
67          %1 = OpExtInstImport "GLSL.std.450"
68               OpMemoryModel Logical GLSL450
69               OpEntryPoint Fragment %4 "main" %28
70               OpExecutionMode %4 OriginUpperLeft
71               OpSource ESSL 310
72               OpName %4 "main"
73               OpName %10 "buf0"
74               OpMemberName %10 0 "_GLF_uniform_float_values"
75               OpName %12 ""
76               OpName %28 "_GLF_color"
77               OpName %31 "buf1"
78               OpMemberName %31 0 "_GLF_uniform_int_values"
79               OpName %33 ""
80               OpDecorate %9 ArrayStride 16
81               OpMemberDecorate %10 0 Offset 0
82               OpDecorate %10 Block
83               OpDecorate %12 DescriptorSet 0
84               OpDecorate %12 Binding 0
85               OpDecorate %28 Location 0
86               OpDecorate %30 ArrayStride 16
87               OpMemberDecorate %31 0 Offset 0
88               OpDecorate %31 Block
89               OpDecorate %33 DescriptorSet 0
90               OpDecorate %33 Binding 1
91          %2 = OpTypeVoid
92          %3 = OpTypeFunction %2
93          %6 = OpTypeFloat 32
94          %7 = OpTypeInt 32 0
95          %8 = OpConstant %7 1
96          %9 = OpTypeArray %6 %8
97         %10 = OpTypeStruct %9
98         %11 = OpTypePointer Uniform %10
99         %12 = OpVariable %11 Uniform
100         %13 = OpTypeInt 32 1
101         %14 = OpConstant %13 0
102         %15 = OpTypePointer Uniform %6
103         %18 = OpConstant %13 10000
104         %22 = OpTypeBool
105         %26 = OpTypeVector %6 4
106         %27 = OpTypePointer Output %26
107         %28 = OpVariable %27 Output
108         %29 = OpConstant %7 2
109         %30 = OpTypeArray %13 %29
110         %31 = OpTypeStruct %30
111         %32 = OpTypePointer Uniform %31
112         %33 = OpVariable %32 Uniform
113         %34 = OpConstant %13 1
114         %35 = OpTypePointer Uniform %13
115          %4 = OpFunction %2 None %3
116          %5 = OpLabel
117         %16 = OpAccessChain %15 %12 %14 %14
118         %17 = OpLoad %6 %16
119         %19 = OpExtInst %6 %1 Ldexp %17 %18
120         %20 = OpAccessChain %15 %12 %14 %14
121         %21 = OpLoad %6 %20
122         %23 = OpFOrdEqual %22 %19 %21
123               OpSelectionMerge %25 None
124               OpBranchConditional %23 %24 %49
125         %24 = OpLabel
126         %36 = OpAccessChain %35 %33 %14 %34
127         %37 = OpLoad %13 %36
128         %38 = OpConvertSToF %6 %37
129         %39 = OpAccessChain %35 %33 %14 %14
130         %40 = OpLoad %13 %39
131         %41 = OpConvertSToF %6 %40
132         %42 = OpAccessChain %35 %33 %14 %14
133         %43 = OpLoad %13 %42
134         %44 = OpConvertSToF %6 %43
135         %45 = OpAccessChain %35 %33 %14 %34
136         %46 = OpLoad %13 %45
137         %47 = OpConvertSToF %6 %46
138         %48 = OpCompositeConstruct %26 %38 %41 %44 %47
139               OpStore %28 %48
140               OpBranch %25
141         %49 = OpLabel
142         %50 = OpAccessChain %35 %33 %14 %34
143         %51 = OpLoad %13 %50
144         %52 = OpConvertSToF %6 %51
145         %53 = OpAccessChain %35 %33 %14 %14
146         %54 = OpLoad %13 %53
147         %55 = OpConvertSToF %6 %54
148         %56 = OpAccessChain %35 %33 %14 %14
149         %57 = OpLoad %13 %56
150         %58 = OpConvertSToF %6 %57
151         %59 = OpAccessChain %35 %33 %14 %34
152         %60 = OpLoad %13 %59
153         %61 = OpConvertSToF %6 %60
154         %62 = OpCompositeConstruct %26 %52 %55 %58 %61
155               OpStore %28 %62
156               OpBranch %25
157         %25 = OpLabel
158               OpReturn
159               OpFunctionEnd
160END
161
162# uniforms for variant
163
164# _GLF_uniform_int_values
165BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
166 0 1
167END
168# _GLF_uniform_float_values
169BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
170 0.0
171END
172
173BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
174
175PIPELINE graphics variant_pipeline
176  ATTACH variant_vertex_shader
177  ATTACH variant_fragment_shader
178  FRAMEBUFFER_SIZE 256 256
179  BIND BUFFER variant_framebuffer AS color LOCATION 0
180  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
181  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
182END
183CLEAR_COLOR variant_pipeline 0 0 0 255
184
185CLEAR variant_pipeline
186RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
187
188EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
189