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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 const folding rule 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;
+#
+# void main()
+# {
+#     // If condition is always false.
+#     if (
+#         clamp(
+#             vec4(3000.0, 1.0, 8.0, 4.0),
+#             vec4(2.0, 3.0, determinant(mat2(2.0, 0.0, 0.0, 2.0)), 5.0), // min = (2, 3, 4, 5)
+#             vec4(6.0)                                                   // max = (6, 6, 6, 6)
+#             ) != vec4(6, 3, 6, 5)
+#        )
+#         _GLF_color = vec4(0);
+#     else
+#         _GLF_color = vec4(1, 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: 39
+; Schema: 0
+               OpCapability Shader
+          %1 = OpExtInstImport "GLSL.std.450"
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %4 "main" %35
+               OpExecutionMode %4 OriginUpperLeft
+               OpSource ESSL 310
+               OpName %4 "main"
+               OpName %35 "_GLF_color"
+               OpDecorate %35 Location 0
+          %2 = OpTypeVoid
+          %3 = OpTypeFunction %2
+          %6 = OpTypeFloat 32
+          %7 = OpTypeVector %6 4
+          %8 = OpConstant %6 3000
+          %9 = OpConstant %6 1
+         %10 = OpConstant %6 8
+         %11 = OpConstant %6 4
+         %12 = OpConstantComposite %7 %8 %9 %10 %11
+         %13 = OpConstant %6 2
+         %14 = OpConstant %6 3
+         %15 = OpTypeVector %6 2
+         %16 = OpTypeMatrix %15 2
+         %17 = OpConstant %6 0
+         %18 = OpConstantComposite %15 %13 %17
+         %19 = OpConstantComposite %15 %17 %13
+         %20 = OpConstantComposite %16 %18 %19
+         %22 = OpConstant %6 5
+         %24 = OpConstant %6 6
+         %25 = OpConstantComposite %7 %24 %24 %24 %24
+         %27 = OpConstantComposite %7 %24 %14 %24 %22
+         %28 = OpTypeBool
+         %29 = OpTypeVector %28 4
+         %34 = OpTypePointer Output %7
+         %35 = OpVariable %34 Output
+         %36 = OpConstantComposite %7 %17 %17 %17 %17
+         %38 = OpConstantComposite %7 %9 %17 %17 %9
+          %4 = OpFunction %2 None %3
+          %5 = OpLabel
+         %21 = OpExtInst %6 %1 Determinant %20
+         %23 = OpCompositeConstruct %7 %13 %14 %21 %22
+         %26 = OpExtInst %7 %1 FClamp %12 %23 %25
+         %30 = OpFOrdNotEqual %29 %26 %27
+         %31 = OpAny %28 %30
+               OpSelectionMerge %33 None
+               OpBranchConditional %31 %32 %37
+         %32 = OpLabel
+               OpStore %35 %36
+               OpBranch %33
+         %37 = OpLabel
+               OpStore %35 %38
+               OpBranch %33
+         %33 = OpLabel
+               OpReturn
+               OpFunctionEnd
+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
+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