--- /dev/null
+#!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 bug found by GraphicsFuzz.
+
+# Short description: Fragment shader that writes red despite unreachable loops
+
+# The test passes because red is written, and the loops inside the if (one of
+# which would be infinite) are dynamically unreachable due to the runtime content
+# of 'injected'.
+
+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 {
+# vec2 injected;
+# };
+#
+# void main()
+# {
+# _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
+# if (injected.x > injected.y) {
+# do
+# {
+# }
+# while(false);
+# {
+# for(
+# int m = 1;
+# true;
+# 1
+# )
+# {
+# _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
+# }
+# }
+# }
+# }
+SHADER fragment variant_fragment_shader SPIRV-ASM
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 7
+; Bound: 45
+; Schema: 0
+ OpCapability Shader
+ %1 = OpExtInstImport "GLSL.std.450"
+ OpMemoryModel Logical GLSL450
+ OpEntryPoint Fragment %4 "main" %9
+ OpExecutionMode %4 OriginUpperLeft
+ OpSource ESSL 310
+ OpName %4 "main"
+ OpName %9 "_GLF_color"
+ OpName %14 "buf0"
+ OpMemberName %14 0 "injected"
+ OpName %16 ""
+ OpName %37 "m"
+ OpDecorate %9 Location 0
+ OpMemberDecorate %14 0 Offset 0
+ OpDecorate %14 Block
+ OpDecorate %16 DescriptorSet 0
+ OpDecorate %16 Binding 0
+ OpDecorate %37 RelaxedPrecision
+ %2 = OpTypeVoid
+ %3 = OpTypeFunction %2
+ %6 = OpTypeFloat 32
+ %7 = OpTypeVector %6 4
+ %8 = OpTypePointer Output %7
+ %9 = OpVariable %8 Output
+ %10 = OpConstant %6 1
+ %11 = OpConstant %6 0
+ %12 = OpConstantComposite %7 %10 %11 %11 %10
+ %13 = OpTypeVector %6 2
+ %14 = OpTypeStruct %13
+ %15 = OpTypePointer Uniform %14
+ %16 = OpVariable %15 Uniform
+ %17 = OpTypeInt 32 1
+ %18 = OpConstant %17 0
+ %19 = OpTypeInt 32 0
+ %20 = OpConstant %19 0
+ %21 = OpTypePointer Uniform %6
+ %24 = OpConstant %19 1
+ %27 = OpTypeBool
+ %35 = OpConstantFalse %27
+ %36 = OpTypePointer Function %17
+ %38 = OpConstant %17 1
+ %44 = OpConstantTrue %27
+ %4 = OpFunction %2 None %3
+ %5 = OpLabel
+ %37 = OpVariable %36 Function
+ OpStore %9 %12
+ %22 = OpAccessChain %21 %16 %18 %20
+ %23 = OpLoad %6 %22
+ %25 = OpAccessChain %21 %16 %18 %24
+ %26 = OpLoad %6 %25
+ %28 = OpFOrdGreaterThan %27 %23 %26
+ OpSelectionMerge %30 None
+ OpBranchConditional %28 %29 %30
+ %29 = OpLabel
+ OpBranch %31
+ %31 = OpLabel
+ OpLoopMerge %33 %34 None
+ OpBranch %32
+ %32 = OpLabel
+ OpBranch %34
+ %34 = OpLabel
+ OpBranchConditional %35 %31 %33
+ %33 = OpLabel
+ OpStore %37 %38
+ OpBranch %39
+ %39 = OpLabel
+ OpLoopMerge %41 %42 None
+ OpBranch %43
+ %43 = OpLabel
+ OpBranchConditional %44 %40 %41
+ %40 = OpLabel
+ OpStore %9 %12
+ OpBranch %42
+ %42 = OpLabel
+ OpBranch %39
+ %41 = OpLabel
+ OpBranch %30
+ %30 = OpLabel
+ OpReturn
+ OpFunctionEnd
+END
+
+# uniforms for variant
+
+# resolution
+BUFFER variant_resolution DATA_TYPE vec2<float> DATA
+ 0.0 1.0
+END
+
+BUFFER framebuffer FORMAT B8G8R8A8_UNORM
+
+PIPELINE graphics gfz_pipeline
+ ATTACH variant_vertex_shader
+ ATTACH variant_fragment_shader
+ FRAMEBUFFER_SIZE 256 256
+ BIND BUFFER framebuffer AS color LOCATION 0
+ BIND BUFFER variant_resolution AS uniform DESCRIPTOR_SET 0 BINDING 0
+END
+CLEAR_COLOR gfz_pipeline 0 0 0 255
+
+CLEAR gfz_pipeline
+RUN gfz_pipeline DRAW_RECT POS 0 0 SIZE 256 256
+EXPECT framebuffer IDX 0 0 SIZE 256 256 EQ_RGB 255 0 0
\ No newline at end of file
{ "struct-used-as-temporary.amber", "struct-used-as-temporary", "A fragment shader that uses a temporary struct variable" },
{ "swizzle-struct-init-min.amber", "swizzle-struct-init-min", "A fragment shader that uses vector swizzles, struct initializers, and min" },
{ "unreachable-barrier-in-loops.amber", "unreachable-barrier-in-loops", "A compute shader with an unreachable barrier in a loop nest" },
+ { "unreachable-loops.amber", "unreachable-loops", "Fragment shader that writes red despite unreachable loops" },
{ "unreachable-loops-in-switch.amber", "unreachable-loops-in-switch", "A fragment shader with unreachable loops in a switch" },
{ "while-inside-switch.amber", "while-inside-switch", "A fragment shader that uses a while loop inside a switch" },
{ "write-before-break.amber", "write-before-break", "Fragment shader that writes red before loop break" },
projects / platform / upstream / VK-GL-CTS.git / commitdiff