3 # Copyright 2020 Google LLC
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
9 # http://www.apache.org/licenses/LICENSE-2.0
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.
18 # A test for a coverage-gap found by the GraphicsFuzz project.
20 # Short description: A fragment shader that covers a specific instruction simplify code path
22 # The test passes because the shader always writes red.
24 # Optimized using spirv-opt with the following arguments:
26 # spirv-opt commit hash: a187dd58a0485988841d325a85c8e6063f53500a
30 SHADER vertex variant_vertex_shader PASSTHROUGH
32 # variant_fragment_shader is derived from the following GLSL:
34 # #define _int_1 _GLF_uniform_int_values[0]
35 # #define _int_0 _GLF_uniform_int_values[1]
36 # #define _float_1_0 _GLF_uniform_float_values[0]
37 # #define _float_0_0 _GLF_uniform_float_values[0]
39 # precision highp float;
41 # // Contents of _GLF_uniform_float_values: [1.0, 0.0]
42 # layout(set = 0, binding = 0) uniform buf0
44 # float _GLF_uniform_float_values[2];
47 # // Contents of _GLF_uniform_int_values: [1, 0]
48 # layout(set = 0, binding = 1) uniform buf1
50 # int _GLF_uniform_int_values[2];
53 # layout(location = 0) out vec4 _GLF_color;
57 # float a = _float_1_0;
59 # if (sqrt(_float_0_0) < a)
61 # _GLF_color = vec4(_int_0);
65 # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
68 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
71 ; Generator: Khronos Glslang Reference Front End; 10
75 %1 = OpExtInstImport "GLSL.std.450"
76 OpMemoryModel Logical GLSL450
77 OpEntryPoint Fragment %4 "main" %31
78 OpExecutionMode %4 OriginUpperLeft
82 OpMemberName %12 0 "_GLF_uniform_float_values"
84 OpName %31 "_GLF_color"
86 OpMemberName %33 0 "_GLF_uniform_int_values"
88 OpDecorate %11 ArrayStride 16
89 OpMemberDecorate %12 0 Offset 0
91 OpDecorate %14 DescriptorSet 0
92 OpDecorate %14 Binding 0
93 OpDecorate %31 Location 0
94 OpDecorate %32 ArrayStride 16
95 OpMemberDecorate %33 0 RelaxedPrecision
96 OpMemberDecorate %33 0 Offset 0
98 OpDecorate %35 DescriptorSet 0
99 OpDecorate %35 Binding 1
100 OpDecorate %39 RelaxedPrecision
101 OpDecorate %44 RelaxedPrecision
102 OpDecorate %47 RelaxedPrecision
104 %3 = OpTypeFunction %2
107 %10 = OpConstant %9 2
108 %11 = OpTypeArray %6 %10
109 %12 = OpTypeStruct %11
110 %13 = OpTypePointer Uniform %12
111 %14 = OpVariable %13 Uniform
113 %16 = OpConstant %15 0
114 %17 = OpTypePointer Uniform %6
115 %20 = OpConstant %6 -1
117 %29 = OpTypeVector %6 4
118 %30 = OpTypePointer Output %29
119 %31 = OpVariable %30 Output
120 %32 = OpTypeArray %15 %10
121 %33 = OpTypeStruct %32
122 %34 = OpTypePointer Uniform %33
123 %35 = OpVariable %34 Uniform
124 %36 = OpConstant %15 1
125 %37 = OpTypePointer Uniform %15
126 %4 = OpFunction %2 None %3
128 %21 = OpAccessChain %17 %14 %16 %16
130 %23 = OpExtInst %6 %1 Sqrt %22
131 %26 = OpFOrdLessThan %25 %23 %20
132 OpSelectionMerge %28 None
133 OpBranchConditional %26 %27 %42
135 %38 = OpAccessChain %37 %35 %16 %36
137 %40 = OpConvertSToF %6 %39
138 %41 = OpCompositeConstruct %29 %40 %40 %40 %40
142 %43 = OpAccessChain %37 %35 %16 %16
144 %45 = OpConvertSToF %6 %44
145 %46 = OpAccessChain %37 %35 %16 %36
147 %48 = OpConvertSToF %6 %47
148 %55 = OpCompositeConstruct %29 %45 %48 %48 %45
156 # uniforms for variant
158 # _GLF_uniform_int_values
159 BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
162 # _GLF_uniform_float_values
163 BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
167 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
169 PIPELINE graphics variant_pipeline
170 ATTACH variant_vertex_shader
171 ATTACH variant_fragment_shader
172 FRAMEBUFFER_SIZE 256 256
173 BIND BUFFER variant_framebuffer AS color LOCATION 0
174 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
175 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
177 CLEAR_COLOR variant_pipeline 0 0 0 255
179 CLEAR variant_pipeline
180 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
182 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255