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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_0 _GLF_uniform_int_values[0]
29# #define _int_1 _GLF_uniform_int_values[1]
30#
31# precision highp int;
32# precision highp float;
33#
34# // Contents of _GLF_uniform_int_values: [0, 1]
35# layout(set = 0, binding = 0) uniform buf0
36# {
37#     int _GLF_uniform_int_values[2];
38# };
39#
40# // Contents of one: 1.0
41# layout(set = 0, binding = 1) uniform buf1
42# {
43#     float one;
44# };
45#
46# layout(location = 0) out vec4 _GLF_color;
47#
48# void main()
49# {
50#     // Always true as -1 < 1.
51#     if(min(-1.0, one) < 1.0)
52#     {
53#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
54#     }
55#     else
56#     {
57#         _GLF_color = vec4(_int_0);
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; 10
64; Bound: 51
65; Schema: 0
66               OpCapability Shader
67          %1 = OpExtInstImport "GLSL.std.450"
68               OpMemoryModel Logical GLSL450
69               OpEntryPoint Fragment %4 "main" %24
70               OpExecutionMode %4 OriginUpperLeft
71               OpSource ESSL 320
72               OpName %4 "main"
73               OpName %8 "buf1"
74               OpMemberName %8 0 "one"
75               OpName %10 ""
76               OpName %24 "_GLF_color"
77               OpName %28 "buf0"
78               OpMemberName %28 0 "_GLF_uniform_int_values"
79               OpName %30 ""
80               OpMemberDecorate %8 0 Offset 0
81               OpDecorate %8 Block
82               OpDecorate %10 DescriptorSet 0
83               OpDecorate %10 Binding 1
84               OpDecorate %24 Location 0
85               OpDecorate %27 ArrayStride 16
86               OpMemberDecorate %28 0 Offset 0
87               OpDecorate %28 Block
88               OpDecorate %30 DescriptorSet 0
89               OpDecorate %30 Binding 0
90          %2 = OpTypeVoid
91          %3 = OpTypeFunction %2
92          %6 = OpTypeFloat 32
93          %7 = OpConstant %6 -1
94          %8 = OpTypeStruct %6
95          %9 = OpTypePointer Uniform %8
96         %10 = OpVariable %9 Uniform
97         %11 = OpTypeInt 32 1
98         %12 = OpConstant %11 0
99         %13 = OpTypePointer Uniform %6
100         %17 = OpConstant %6 1
101         %18 = OpTypeBool
102         %22 = OpTypeVector %6 4
103         %23 = OpTypePointer Output %22
104         %24 = OpVariable %23 Output
105         %25 = OpTypeInt 32 0
106         %26 = OpConstant %25 2
107         %27 = OpTypeArray %11 %26
108         %28 = OpTypeStruct %27
109         %29 = OpTypePointer Uniform %28
110         %30 = OpVariable %29 Uniform
111         %31 = OpConstant %11 1
112         %32 = OpTypePointer Uniform %11
113          %4 = OpFunction %2 None %3
114          %5 = OpLabel
115         %14 = OpAccessChain %13 %10 %12
116         %15 = OpLoad %6 %14
117         %16 = OpExtInst %6 %1 FMin %7 %15
118         %19 = OpFOrdLessThan %18 %16 %17
119               OpSelectionMerge %21 None
120               OpBranchConditional %19 %20 %46
121         %20 = OpLabel
122         %33 = OpAccessChain %32 %30 %12 %31
123         %34 = OpLoad %11 %33
124         %35 = OpConvertSToF %6 %34
125         %36 = OpAccessChain %32 %30 %12 %12
126         %37 = OpLoad %11 %36
127         %38 = OpConvertSToF %6 %37
128         %39 = OpAccessChain %32 %30 %12 %12
129         %40 = OpLoad %11 %39
130         %41 = OpConvertSToF %6 %40
131         %42 = OpAccessChain %32 %30 %12 %31
132         %43 = OpLoad %11 %42
133         %44 = OpConvertSToF %6 %43
134         %45 = OpCompositeConstruct %22 %35 %38 %41 %44
135               OpStore %24 %45
136               OpBranch %21
137         %46 = OpLabel
138         %47 = OpAccessChain %32 %30 %12 %12
139         %48 = OpLoad %11 %47
140         %49 = OpConvertSToF %6 %48
141         %50 = OpCompositeConstruct %22 %49 %49 %49 %49
142               OpStore %24 %50
143               OpBranch %21
144         %21 = OpLabel
145               OpReturn
146               OpFunctionEnd
147END
148
149# uniforms for variant
150
151# one
152BUFFER variant_one DATA_TYPE float STD140 DATA
153 1.0
154END
155# _GLF_uniform_int_values
156BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
157 0 1
158END
159
160BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
161
162PIPELINE graphics variant_pipeline
163  ATTACH variant_vertex_shader
164  ATTACH variant_fragment_shader
165  FRAMEBUFFER_SIZE 256 256
166  BIND BUFFER variant_framebuffer AS color LOCATION 0
167  BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 1
168  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
169END
170CLEAR_COLOR variant_pipeline 0 0 0 255
171
172CLEAR variant_pipeline
173RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
174
175EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
176