--- /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: A fragment shader with uniform value as a return
+
+# The test passes because shader always writes color red
+
+SHADER vertex variant_vertex_shader PASSTHROUGH
+
+# variant_fragment_shader is derived from the following GLSL:
+# #version 310 es
+# precision highp float;
+#
+# precision highp int;
+#
+# layout(location = 0) out vec4 _GLF_color;
+#
+# layout(set = 0, binding = 0) uniform buf0
+# {
+# vec2 injectionSwitch;
+# };
+#
+# float fx(){
+# if (gl_FragCoord.y >= 0.0)
+# return injectionSwitch.y;
+#
+# while(true){
+# _GLF_color = vec4(1.0, 1.0, 1.0, 1.0);
+# };
+# }
+#
+# void main()
+# {
+# float x2 = 1.0;
+# float B = 1.0;
+#
+# _GLF_color = vec4(fx(), 0.0, 0.0, 1.0);
+#
+# while (x2 > 2.0){
+# float k0;
+# k0 = fx() - fx();
+# B = k0;
+# x2 = B;
+# }
+# }
+SHADER fragment variant_fragment_shader SPIRV-ASM
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 8
+; Bound: 63
+; Schema: 0
+ OpCapability Shader
+ %1 = OpExtInstImport "GLSL.std.450"
+ OpMemoryModel Logical GLSL450
+ OpEntryPoint Fragment %4 "main" %12 %40
+ OpExecutionMode %4 OriginUpperLeft
+ OpSource ESSL 310
+ OpName %4 "main"
+ OpName %8 "fx("
+ OpName %12 "gl_FragCoord"
+ OpName %24 "buf0"
+ OpMemberName %24 0 "injectionSwitch"
+ OpName %26 ""
+ OpName %40 "_GLF_color"
+ OpName %45 "x2"
+ OpName %46 "B"
+ OpName %57 "k0"
+ OpDecorate %12 BuiltIn FragCoord
+ OpMemberDecorate %24 0 Offset 0
+ OpDecorate %24 Block
+ OpDecorate %26 DescriptorSet 0
+ OpDecorate %26 Binding 0
+ OpDecorate %40 Location 0
+ %2 = OpTypeVoid
+ %3 = OpTypeFunction %2
+ %6 = OpTypeFloat 32
+ %7 = OpTypeFunction %6
+ %10 = OpTypeVector %6 4
+ %11 = OpTypePointer Input %10
+ %12 = OpVariable %11 Input
+ %13 = OpTypeInt 32 0
+ %14 = OpConstant %13 1
+ %15 = OpTypePointer Input %6
+ %18 = OpConstant %6 0
+ %19 = OpTypeBool
+ %23 = OpTypeVector %6 2
+ %24 = OpTypeStruct %23
+ %25 = OpTypePointer Uniform %24
+ %26 = OpVariable %25 Uniform
+ %27 = OpTypeInt 32 1
+ %28 = OpConstant %27 0
+ %29 = OpTypePointer Uniform %6
+ %38 = OpConstantTrue %19
+ %39 = OpTypePointer Output %10
+ %40 = OpVariable %39 Output
+ %41 = OpConstant %6 1
+ %42 = OpConstantComposite %10 %41 %41 %41 %41
+ %44 = OpTypePointer Function %6
+ %55 = OpConstant %6 2
+ %4 = OpFunction %2 None %3
+ %5 = OpLabel
+ %45 = OpVariable %44 Function
+ %46 = OpVariable %44 Function
+ %57 = OpVariable %44 Function
+ OpStore %45 %41
+ OpStore %46 %41
+ %47 = OpFunctionCall %6 %8
+ %48 = OpCompositeConstruct %10 %47 %18 %18 %41
+ OpStore %40 %48
+ OpBranch %49
+ %49 = OpLabel
+ OpLoopMerge %51 %52 None
+ OpBranch %53
+ %53 = OpLabel
+ %54 = OpLoad %6 %45
+ %56 = OpFOrdGreaterThan %19 %54 %55
+ OpBranchConditional %56 %50 %51
+ %50 = OpLabel
+ %58 = OpFunctionCall %6 %8
+ %59 = OpFunctionCall %6 %8
+ %60 = OpFSub %6 %58 %59
+ OpStore %57 %60
+ %61 = OpLoad %6 %57
+ OpStore %46 %61
+ %62 = OpLoad %6 %46
+ OpStore %45 %62
+ OpBranch %52
+ %52 = OpLabel
+ OpBranch %49
+ %51 = OpLabel
+ OpReturn
+ OpFunctionEnd
+ %8 = OpFunction %6 None %7
+ %9 = OpLabel
+ %16 = OpAccessChain %15 %12 %14
+ %17 = OpLoad %6 %16
+ %20 = OpFOrdGreaterThanEqual %19 %17 %18
+ OpSelectionMerge %22 None
+ OpBranchConditional %20 %21 %22
+ %21 = OpLabel
+ %30 = OpAccessChain %29 %26 %28 %14
+ %31 = OpLoad %6 %30
+ OpReturnValue %31
+ %22 = OpLabel
+ OpBranch %33
+ %33 = OpLabel
+ OpLoopMerge %35 %36 None
+ OpBranch %37
+ %37 = OpLabel
+ OpBranchConditional %38 %34 %35
+ %34 = OpLabel
+ OpStore %40 %42
+ OpBranch %36
+ %36 = OpLabel
+ OpBranch %33
+ %35 = OpLabel
+ %43 = OpUndef %6
+ OpReturnValue %43
+ OpFunctionEnd
+END
+
+# uniforms for variant
+
+# injectionSwitch
+BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA
+ 0.0 1.0
+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_injectionSwitch 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
{ "for-with-ifs-and-return.amber", "for-with-ifs-and-return", "A fragment shader with two ifs and return/continue inside a for loop" },
{ "fragcoord-control-flow.amber", "fragcoord-control-flow", "A fragment shader that uses FragCoord and somewhat complex control flow" },
{ "fragcoord-control-flow-2.amber", "fragcoord-control-flow-2", "A fragment shader that uses FragCoord and somewhat complex control flow" },
+{ "function-with-uniform-return.amber", "function-with-uniform-return", "A fragment shader with uniform value as a return" },
{ "global-array-loops.amber", "global-array-loops", "A loop that writes then reads a global array" },
{ "if-and-switch.amber", "if-and-switch", "A fragment shader with a switch and some data flow" },
{ "injection-switch-as-comparison.amber", "injection-switch-as-comparison", "A fragment shader with uniform comparison in loop" },
projects / platform / upstream / VK-GL-CTS.git / commitdiff