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2026-05-06 23:44:13 +02:00
parent a5f787d80f
commit fd7038b853
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+#!amber
+
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+# A test for a coverage-gap found by GraphicsFuzz.
+
+# Short description: A fragment shader that covers a specific propagate array copy path.
+
+# The test passes because shader always writes red.
+
+SHADER vertex variant_vertex_shader PASSTHROUGH
+
+# variant_fragment_shader is derived from the following GLSL:
+# #version 310 es
+# precision highp float;
+#
+# layout(location = 0) out vec4 _GLF_color;
+#
+# layout(set = 0, binding = 0) uniform buf0
+# {
+#     int zero;
+# };
+#
+# struct Array {
+#     int values[2];
+# };
+#
+# void main()
+# {
+#     Array a;
+#     a.values[zero] = 1;
+#     Array b = a;
+#     float one = 0.0;
+#     // If condition is always true
+#     if(b.values[zero] == 1)
+#         one = 1.0;
+#     _GLF_color = vec4(one, 0, 0, 1);
+# }
+SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 8
+; Bound: 43
+; Schema: 0
+               OpCapability Shader
+          %1 = OpExtInstImport "GLSL.std.450"
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %4 "main" %40
+               OpExecutionMode %4 OriginUpperLeft
+               OpSource ESSL 310
+               OpName %4 "main"
+               OpName %10 "Array"
+               OpMemberName %10 0 "values"
+               OpName %12 "a"
+               OpName %14 "buf0"
+               OpMemberName %14 0 "zero"
+               OpName %16 ""
+               OpName %23 "b"
+               OpName %27 "one"
+               OpName %40 "_GLF_color"
+               OpMemberDecorate %10 0 RelaxedPrecision
+               OpMemberDecorate %14 0 RelaxedPrecision
+               OpMemberDecorate %14 0 Offset 0
+               OpDecorate %14 Block
+               OpDecorate %16 DescriptorSet 0
+               OpDecorate %16 Binding 0
+               OpDecorate %19 RelaxedPrecision
+               OpDecorate %30 RelaxedPrecision
+               OpDecorate %32 RelaxedPrecision
+               OpDecorate %40 Location 0
+          %2 = OpTypeVoid
+          %3 = OpTypeFunction %2
+          %6 = OpTypeInt 32 1
+          %7 = OpTypeInt 32 0
+          %8 = OpConstant %7 2
+          %9 = OpTypeArray %6 %8
+         %10 = OpTypeStruct %9
+         %11 = OpTypePointer Function %10
+         %13 = OpConstant %6 0
+         %14 = OpTypeStruct %6
+         %15 = OpTypePointer Uniform %14
+         %16 = OpVariable %15 Uniform
+         %17 = OpTypePointer Uniform %6
+         %20 = OpConstant %6 1
+         %21 = OpTypePointer Function %6
+         %25 = OpTypeFloat 32
+         %26 = OpTypePointer Function %25
+         %28 = OpConstant %25 0
+         %33 = OpTypeBool
+         %37 = OpConstant %25 1
+         %38 = OpTypeVector %25 4
+         %39 = OpTypePointer Output %38
+         %40 = OpVariable %39 Output
+          %4 = OpFunction %2 None %3
+          %5 = OpLabel
+         %12 = OpVariable %11 Function
+         %23 = OpVariable %11 Function
+         %27 = OpVariable %26 Function
+         %18 = OpAccessChain %17 %16 %13
+         %19 = OpLoad %6 %18
+         %22 = OpAccessChain %21 %12 %13 %19
+               OpStore %22 %20
+         %24 = OpLoad %10 %12
+               OpStore %23 %24
+               OpStore %27 %28
+         %29 = OpAccessChain %17 %16 %13
+         %30 = OpLoad %6 %29
+         %31 = OpAccessChain %21 %23 %13 %30
+         %32 = OpLoad %6 %31
+         %34 = OpIEqual %33 %32 %20
+               OpSelectionMerge %36 None
+               OpBranchConditional %34 %35 %36
+         %35 = OpLabel
+               OpStore %27 %37
+               OpBranch %36
+         %36 = OpLabel
+         %41 = OpLoad %25 %27
+         %42 = OpCompositeConstruct %38 %41 %28 %28 %37
+               OpStore %40 %42
+               OpReturn
+               OpFunctionEnd
+END
+
+# uniforms for variant
+
+# zero
+BUFFER variant_zero DATA_TYPE int32 DATA
+ 0
+END
+
+BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
+
+PIPELINE graphics variant_pipeline
+  ATTACH variant_vertex_shader
+  ATTACH variant_fragment_shader
+  FRAMEBUFFER_SIZE 256 256
+  BIND BUFFER variant_framebuffer AS color LOCATION 0
+  BIND BUFFER variant_zero AS uniform DESCRIPTOR_SET 0 BINDING 0
+END
+CLEAR_COLOR variant_pipeline 0 0 0 255
+
+CLEAR variant_pipeline
+RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
+
+EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255