• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1#!amber
2
3# Copyright 2019 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 GraphicsFuzz.
19
20# Short description: A fragment shader that covers a specific instruction folding path.
21
22# The test passes because 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# precision highp float;
29#
30# layout(location = 0) out vec4 _GLF_color;
31#
32# void main()
33# {
34#     // If condition is always true.
35#     if((gl_FragCoord.x < 0.0) || true)
36#         _GLF_color = vec4(1, 0, 0, 1);
37#     else
38#         _GLF_color = vec4(0);
39# }
40SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
41; SPIR-V
42; Version: 1.0
43; Generator: Khronos Glslang Reference Front End; 8
44; Bound: 28
45; Schema: 0
46               OpCapability Shader
47          %1 = OpExtInstImport "GLSL.std.450"
48               OpMemoryModel Logical GLSL450
49               OpEntryPoint Fragment %4 "main" %9 %23
50               OpExecutionMode %4 OriginUpperLeft
51               OpSource ESSL 310
52               OpName %4 "main"
53               OpName %9 "gl_FragCoord"
54               OpName %23 "_GLF_color"
55               OpDecorate %9 BuiltIn FragCoord
56               OpDecorate %23 Location 0
57          %2 = OpTypeVoid
58          %3 = OpTypeFunction %2
59          %6 = OpTypeFloat 32
60          %7 = OpTypeVector %6 4
61          %8 = OpTypePointer Input %7
62          %9 = OpVariable %8 Input
63         %10 = OpTypeInt 32 0
64         %11 = OpConstant %10 0
65         %12 = OpTypePointer Input %6
66         %15 = OpConstant %6 0
67         %16 = OpTypeBool
68         %18 = OpConstantTrue %16
69         %22 = OpTypePointer Output %7
70         %23 = OpVariable %22 Output
71         %24 = OpConstant %6 1
72         %25 = OpConstantComposite %7 %24 %15 %15 %24
73         %27 = OpConstantComposite %7 %15 %15 %15 %15
74          %4 = OpFunction %2 None %3
75          %5 = OpLabel
76         %13 = OpAccessChain %12 %9 %11
77         %14 = OpLoad %6 %13
78         %17 = OpFOrdLessThan %16 %14 %15
79         %19 = OpLogicalOr %16 %17 %18
80               OpSelectionMerge %21 None
81               OpBranchConditional %19 %20 %26
82         %20 = OpLabel
83               OpStore %23 %25
84               OpBranch %21
85         %26 = OpLabel
86               OpStore %23 %27
87               OpBranch %21
88         %21 = OpLabel
89               OpReturn
90               OpFunctionEnd
91END
92
93
94BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
95
96PIPELINE graphics variant_pipeline
97  ATTACH variant_vertex_shader
98  ATTACH variant_fragment_shader
99  FRAMEBUFFER_SIZE 256 256
100  BIND BUFFER variant_framebuffer AS color LOCATION 0
101END
102CLEAR_COLOR variant_pipeline 0 0 0 255
103
104CLEAR variant_pipeline
105RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
106
107EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
108