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