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 selection DAG 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#
31# precision highp float;
32# precision highp int;
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# // Contents of v1: [0.0, 1.0]
40# layout(set = 0, binding = 1) uniform buf1
41# {
42#     vec2 v1;
43# };
44#
45# layout(location = 0) out vec4 _GLF_color;
46#
47# void main()
48# {
49#     // Always true.
50#     if (v1.x < v1.y)
51#     {
52#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
53#
54#         // Always false.
55#         if (v1.x > v1.y)
56#         {
57#             _GLF_color = vec4(_int_1);
58#         }
59#         return;
60#     }
61#     else
62#     {
63#         _GLF_color = vec4(_int_0);
64#     }
65# }
66SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
67; SPIR-V
68; Version: 1.0
69; Generator: Khronos Glslang Reference Front End; 8
70; Bound: 65
71; Schema: 0
72               OpCapability Shader
73          %1 = OpExtInstImport "GLSL.std.450"
74               OpMemoryModel Logical GLSL450
75               OpEntryPoint Fragment %4 "main" %27
76               OpExecutionMode %4 OriginUpperLeft
77               OpSource ESSL 310
78               OpName %4 "main"
79               OpName %8 "buf1"
80               OpMemberName %8 0 "v1"
81               OpName %10 ""
82               OpName %27 "_GLF_color"
83               OpName %30 "buf0"
84               OpMemberName %30 0 "_GLF_uniform_int_values"
85               OpName %32 ""
86               OpMemberDecorate %8 0 Offset 0
87               OpDecorate %8 Block
88               OpDecorate %10 DescriptorSet 0
89               OpDecorate %10 Binding 1
90               OpDecorate %27 Location 0
91               OpDecorate %29 ArrayStride 16
92               OpMemberDecorate %30 0 Offset 0
93               OpDecorate %30 Block
94               OpDecorate %32 DescriptorSet 0
95               OpDecorate %32 Binding 0
96          %2 = OpTypeVoid
97          %3 = OpTypeFunction %2
98          %6 = OpTypeFloat 32
99          %7 = OpTypeVector %6 2
100          %8 = OpTypeStruct %7
101          %9 = OpTypePointer Uniform %8
102         %10 = OpVariable %9 Uniform
103         %11 = OpTypeInt 32 1
104         %12 = OpConstant %11 0
105         %13 = OpTypeInt 32 0
106         %14 = OpConstant %13 0
107         %15 = OpTypePointer Uniform %6
108         %18 = OpConstant %13 1
109         %21 = OpTypeBool
110         %25 = OpTypeVector %6 4
111         %26 = OpTypePointer Output %25
112         %27 = OpVariable %26 Output
113         %28 = OpConstant %13 2
114         %29 = OpTypeArray %11 %28
115         %30 = OpTypeStruct %29
116         %31 = OpTypePointer Uniform %30
117         %32 = OpVariable %31 Uniform
118         %33 = OpTypePointer Uniform %11
119         %37 = OpConstant %11 1
120          %4 = OpFunction %2 None %3
121          %5 = OpLabel
122         %16 = OpAccessChain %15 %10 %12 %14
123         %17 = OpLoad %6 %16
124         %19 = OpAccessChain %15 %10 %12 %18
125         %20 = OpLoad %6 %19
126         %22 = OpFOrdLessThan %21 %17 %20
127               OpSelectionMerge %24 None
128               OpBranchConditional %22 %23 %60
129         %23 = OpLabel
130         %34 = OpAccessChain %33 %32 %12 %12
131         %35 = OpLoad %11 %34
132         %36 = OpConvertSToF %6 %35
133         %38 = OpAccessChain %33 %32 %12 %37
134         %39 = OpLoad %11 %38
135         %40 = OpConvertSToF %6 %39
136         %41 = OpAccessChain %33 %32 %12 %37
137         %42 = OpLoad %11 %41
138         %43 = OpConvertSToF %6 %42
139         %44 = OpAccessChain %33 %32 %12 %12
140         %45 = OpLoad %11 %44
141         %46 = OpConvertSToF %6 %45
142         %47 = OpCompositeConstruct %25 %36 %40 %43 %46
143               OpStore %27 %47
144         %48 = OpAccessChain %15 %10 %12 %14
145         %49 = OpLoad %6 %48
146         %50 = OpAccessChain %15 %10 %12 %18
147         %51 = OpLoad %6 %50
148         %52 = OpFOrdGreaterThan %21 %49 %51
149               OpSelectionMerge %54 None
150               OpBranchConditional %52 %53 %54
151         %53 = OpLabel
152         %55 = OpAccessChain %33 %32 %12 %12
153         %56 = OpLoad %11 %55
154         %57 = OpConvertSToF %6 %56
155         %58 = OpCompositeConstruct %25 %57 %57 %57 %57
156               OpStore %27 %58
157               OpBranch %54
158         %54 = OpLabel
159               OpReturn
160         %60 = OpLabel
161         %61 = OpAccessChain %33 %32 %12 %37
162         %62 = OpLoad %11 %61
163         %63 = OpConvertSToF %6 %62
164         %64 = OpCompositeConstruct %25 %63 %63 %63 %63
165               OpStore %27 %64
166               OpBranch %24
167         %24 = OpLabel
168               OpReturn
169               OpFunctionEnd
170END
171
172# uniforms for variant
173
174# v1
175BUFFER variant_v1 DATA_TYPE vec2<float> STD140 DATA
176 0.0 1.0
177END
178# _GLF_uniform_int_values
179BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
180 1 0
181END
182
183BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
184
185PIPELINE graphics variant_pipeline
186  ATTACH variant_vertex_shader
187  ATTACH variant_fragment_shader
188  FRAMEBUFFER_SIZE 256 256
189  BIND BUFFER variant_framebuffer AS color LOCATION 0
190  BIND BUFFER variant_v1 AS uniform DESCRIPTOR_SET 0 BINDING 1
191  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
192END
193CLEAR_COLOR variant_pipeline 0 0 0 255
194
195CLEAR variant_pipeline
196RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
197
198EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
199