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 floating point 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_0_0 _GLF_uniform_float_values[0]
31#
32# precision highp float;
33#
34# // Contents of _GLF_uniform_int_values: [1, 0]
35# layout(set = 0, binding = 0) uniform buf0
36# {
37#     int _GLF_uniform_int_values[2];
38# };
39#
40# // Contents of _GLF_uniform_float_values: 0.0
41# layout(set = 0, binding = 1) uniform buf1
42# {
43#     float _GLF_uniform_float_values[1];
44# };
45#
46# layout(location = 0) out vec4 _GLF_color;
47#
48# void main()
49# {
50#     // This results in an undefined value, but not in undefined behavior.
51#     float undefined = sinh(log2(-8.9));
52#
53#     if (1 == _int_1 || undefined > _float_0_0)
54#     {
55#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
56#     }
57#     else
58#     {
59#         _GLF_color = vec4(_int_0);
60#     }
61# }
62SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
63; SPIR-V
64; Version: 1.0
65; Generator: Khronos Glslang Reference Front End; 8
66; Bound: 62
67; Schema: 0
68               OpCapability Shader
69          %1 = OpExtInstImport "GLSL.std.450"
70               OpMemoryModel Logical GLSL450
71               OpEntryPoint Fragment %4 "main" %43
72               OpExecutionMode %4 OriginUpperLeft
73               OpSource ESSL 310
74               OpName %4 "main"
75               OpName %8 "undefined"
76               OpName %17 "buf0"
77               OpMemberName %17 0 "_GLF_uniform_int_values"
78               OpName %19 ""
79               OpName %31 "buf1"
80               OpMemberName %31 0 "_GLF_uniform_float_values"
81               OpName %33 ""
82               OpName %43 "_GLF_color"
83               OpDecorate %16 ArrayStride 16
84               OpMemberDecorate %17 0 RelaxedPrecision
85               OpMemberDecorate %17 0 Offset 0
86               OpDecorate %17 Block
87               OpDecorate %19 DescriptorSet 0
88               OpDecorate %19 Binding 0
89               OpDecorate %23 RelaxedPrecision
90               OpDecorate %30 ArrayStride 16
91               OpMemberDecorate %31 0 Offset 0
92               OpDecorate %31 Block
93               OpDecorate %33 DescriptorSet 0
94               OpDecorate %33 Binding 1
95               OpDecorate %43 Location 0
96               OpDecorate %45 RelaxedPrecision
97               OpDecorate %48 RelaxedPrecision
98               OpDecorate %51 RelaxedPrecision
99               OpDecorate %54 RelaxedPrecision
100               OpDecorate %59 RelaxedPrecision
101          %2 = OpTypeVoid
102          %3 = OpTypeFunction %2
103          %6 = OpTypeFloat 32
104          %7 = OpTypePointer Function %6
105          %9 = OpConstant %6 0x1.8p+128
106         %11 = OpTypeBool
107         %12 = OpTypeInt 32 1
108         %13 = OpConstant %12 1
109         %14 = OpTypeInt 32 0
110         %15 = OpConstant %14 2
111         %16 = OpTypeArray %12 %15
112         %17 = OpTypeStruct %16
113         %18 = OpTypePointer Uniform %17
114         %19 = OpVariable %18 Uniform
115         %20 = OpConstant %12 0
116         %21 = OpTypePointer Uniform %12
117         %29 = OpConstant %14 1
118         %30 = OpTypeArray %6 %29
119         %31 = OpTypeStruct %30
120         %32 = OpTypePointer Uniform %31
121         %33 = OpVariable %32 Uniform
122         %34 = OpTypePointer Uniform %6
123         %41 = OpTypeVector %6 4
124         %42 = OpTypePointer Output %41
125         %43 = OpVariable %42 Output
126          %4 = OpFunction %2 None %3
127          %5 = OpLabel
128          %8 = OpVariable %7 Function
129         %10 = OpExtInst %6 %1 Sinh %9
130               OpStore %8 %10
131         %22 = OpAccessChain %21 %19 %20 %20
132         %23 = OpLoad %12 %22
133         %24 = OpIEqual %11 %13 %23
134         %25 = OpLogicalNot %11 %24
135               OpSelectionMerge %27 None
136               OpBranchConditional %25 %26 %27
137         %26 = OpLabel
138         %28 = OpLoad %6 %8
139         %35 = OpAccessChain %34 %33 %20 %20
140         %36 = OpLoad %6 %35
141         %37 = OpFOrdGreaterThan %11 %28 %36
142               OpBranch %27
143         %27 = OpLabel
144         %38 = OpPhi %11 %24 %5 %37 %26
145               OpSelectionMerge %40 None
146               OpBranchConditional %38 %39 %57
147         %39 = OpLabel
148         %44 = OpAccessChain %21 %19 %20 %20
149         %45 = OpLoad %12 %44
150         %46 = OpConvertSToF %6 %45
151         %47 = OpAccessChain %21 %19 %20 %13
152         %48 = OpLoad %12 %47
153         %49 = OpConvertSToF %6 %48
154         %50 = OpAccessChain %21 %19 %20 %13
155         %51 = OpLoad %12 %50
156         %52 = OpConvertSToF %6 %51
157         %53 = OpAccessChain %21 %19 %20 %20
158         %54 = OpLoad %12 %53
159         %55 = OpConvertSToF %6 %54
160         %56 = OpCompositeConstruct %41 %46 %49 %52 %55
161               OpStore %43 %56
162               OpBranch %40
163         %57 = OpLabel
164         %58 = OpAccessChain %21 %19 %20 %13
165         %59 = OpLoad %12 %58
166         %60 = OpConvertSToF %6 %59
167         %61 = OpCompositeConstruct %41 %60 %60 %60 %60
168               OpStore %43 %61
169               OpBranch %40
170         %40 = OpLabel
171               OpReturn
172               OpFunctionEnd
173END
174
175# uniforms for variant
176
177# _GLF_uniform_float_values
178BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
179 0.0
180END
181# _GLF_uniform_int_values
182BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
183 1 0
184END
185
186BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
187
188PIPELINE graphics variant_pipeline
189  ATTACH variant_vertex_shader
190  ATTACH variant_fragment_shader
191  FRAMEBUFFER_SIZE 256 256
192  BIND BUFFER variant_framebuffer AS color LOCATION 0
193  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
194  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
195END
196CLEAR_COLOR variant_pipeline 0 0 0 255
197
198CLEAR variant_pipeline
199RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
200
201EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
202