1#!amber
2
3# Copyright 2021 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_1 _GLF_uniform_int_values[0]
29# #define _int_0 _GLF_uniform_int_values[1]
30# #define _float_2_0 _GLF_uniform_float_values[0]
31# #define _float_1_0 _GLF_uniform_float_values[1]
32#
33# precision highp int;
34# precision highp float;
35#
36# // Contents of _GLF_uniform_int_values: [1, 0]
37# layout(set = 0, binding = 0) uniform buf0
38# {
39#     int _GLF_uniform_int_values[2];
40# };
41#
42# // Contents of _GLF_uniform_float_values: [2.0, 1.0]
43# layout(set = 0, binding = 1) uniform buf1
44# {
45#     float _GLF_uniform_float_values[2];
46# };
47#
48# layout(location = 0) out vec4 _GLF_color;
49#
50# void main()
51# {
52#     // (1, 1 - (-0)) dot (1, 1) = (1, 1) dot (1, 1) = 1 * 1 + 1 * 1 = 2
53#     float f = dot(vec2(_float_1_0, _float_1_0 - (- 0.0)), vec2(_float_1_0));
54#
55#     // Always true.
56#     if(f == _float_2_0)
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: 64
70; Schema: 0
71               OpCapability Shader
72          %1 = OpExtInstImport "GLSL.std.450"
73               OpMemoryModel Logical GLSL450
74               OpEntryPoint Fragment %4 "main" %40
75               OpExecutionMode %4 OriginUpperLeft
76               OpSource ESSL 320
77               OpName %4 "main"
78               OpName %8 "f"
79               OpName %12 "buf1"
80               OpMemberName %12 0 "_GLF_uniform_float_values"
81               OpName %14 ""
82               OpName %40 "_GLF_color"
83               OpName %42 "buf0"
84               OpMemberName %42 0 "_GLF_uniform_int_values"
85               OpName %44 ""
86               OpDecorate %11 ArrayStride 16
87               OpMemberDecorate %12 0 Offset 0
88               OpDecorate %12 Block
89               OpDecorate %14 DescriptorSet 0
90               OpDecorate %14 Binding 1
91               OpDecorate %40 Location 0
92               OpDecorate %41 ArrayStride 16
93               OpMemberDecorate %42 0 Offset 0
94               OpDecorate %42 Block
95               OpDecorate %44 DescriptorSet 0
96               OpDecorate %44 Binding 0
97          %2 = OpTypeVoid
98          %3 = OpTypeFunction %2
99          %6 = OpTypeFloat 32
100          %7 = OpTypePointer Function %6
101          %9 = OpTypeInt 32 0
102         %10 = OpConstant %9 2
103         %11 = OpTypeArray %6 %10
104         %12 = OpTypeStruct %11
105         %13 = OpTypePointer Uniform %12
106         %14 = OpVariable %13 Uniform
107         %15 = OpTypeInt 32 1
108         %16 = OpConstant %15 0
109         %17 = OpConstant %15 1
110         %18 = OpTypePointer Uniform %6
111         %23 = OpConstant %6 -0
112         %25 = OpTypeVector %6 2
113         %34 = OpTypeBool
114         %38 = OpTypeVector %6 4
115         %39 = OpTypePointer Output %38
116         %40 = OpVariable %39 Output
117         %41 = OpTypeArray %15 %10
118         %42 = OpTypeStruct %41
119         %43 = OpTypePointer Uniform %42
120         %44 = OpVariable %43 Uniform
121         %45 = OpTypePointer Uniform %15
122          %4 = OpFunction %2 None %3
123          %5 = OpLabel
124          %8 = OpVariable %7 Function
125         %19 = OpAccessChain %18 %14 %16 %17
126         %20 = OpLoad %6 %19
127         %21 = OpAccessChain %18 %14 %16 %17
128         %22 = OpLoad %6 %21
129         %24 = OpFSub %6 %22 %23
130         %26 = OpCompositeConstruct %25 %20 %24
131         %27 = OpAccessChain %18 %14 %16 %17
132         %28 = OpLoad %6 %27
133         %29 = OpCompositeConstruct %25 %28 %28
134         %30 = OpDot %6 %26 %29
135               OpStore %8 %30
136         %31 = OpLoad %6 %8
137         %32 = OpAccessChain %18 %14 %16 %16
138         %33 = OpLoad %6 %32
139         %35 = OpFOrdEqual %34 %31 %33
140               OpSelectionMerge %37 None
141               OpBranchConditional %35 %36 %59
142         %36 = OpLabel
143         %46 = OpAccessChain %45 %44 %16 %16
144         %47 = OpLoad %15 %46
145         %48 = OpConvertSToF %6 %47
146         %49 = OpAccessChain %45 %44 %16 %17
147         %50 = OpLoad %15 %49
148         %51 = OpConvertSToF %6 %50
149         %52 = OpAccessChain %45 %44 %16 %17
150         %53 = OpLoad %15 %52
151         %54 = OpConvertSToF %6 %53
152         %55 = OpAccessChain %45 %44 %16 %16
153         %56 = OpLoad %15 %55
154         %57 = OpConvertSToF %6 %56
155         %58 = OpCompositeConstruct %38 %48 %51 %54 %57
156               OpStore %40 %58
157               OpBranch %37
158         %59 = OpLabel
159         %60 = OpAccessChain %45 %44 %16 %17
160         %61 = OpLoad %15 %60
161         %62 = OpConvertSToF %6 %61
162         %63 = OpCompositeConstruct %38 %62 %62 %62 %62
163               OpStore %40 %63
164               OpBranch %37
165         %37 = OpLabel
166               OpReturn
167               OpFunctionEnd
168END
169
170# uniforms for variant
171
172# _GLF_uniform_float_values
173BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
174 2.0 1.0
175END
176# _GLF_uniform_int_values
177BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
178 1 0
179END
180
181BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
182
183PIPELINE graphics variant_pipeline
184  ATTACH variant_vertex_shader
185  ATTACH variant_fragment_shader
186  FRAMEBUFFER_SIZE 256 256
187  BIND BUFFER variant_framebuffer AS color LOCATION 0
188  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
189  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
190END
191CLEAR_COLOR variant_pipeline 0 0 0 255
192
193CLEAR variant_pipeline
194RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
195
196EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
197