external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-inline-pass-return-in-loop.amber

#!amber

# Copyright 2020 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 inlining optimization 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;
# precision highp int;
#
# layout(location = 0) out vec4 _GLF_color;
#
# float func()
# {
#     for (int i = 0; i < 10; ++i)
#     {
#         if (i > 5)
#             ++i;
#
#         if (i > 8)
#             return 0.0;
#     }
#
#     return 1.0;
# }
#
# void main()
# {
#     if (false)
#     {
#         _GLF_color = vec4(func());
#     }
#     else
#     {
#         _GLF_color = vec4(1, 0, 0, 1);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 53
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %48
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "func("
               OpName %12 "i"
               OpName %48 "_GLF_color"
               OpDecorate %48 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeFunction %6
         %10 = OpTypeInt 32 1
         %11 = OpTypePointer Function %10
         %13 = OpConstant %10 0
         %20 = OpConstant %10 10
         %21 = OpTypeBool
         %24 = OpConstant %10 5
         %29 = OpConstant %10 1
         %32 = OpConstant %10 8
         %36 = OpConstant %6 0
         %40 = OpConstant %6 1
         %43 = OpConstantFalse %21
         %46 = OpTypeVector %6 4
         %47 = OpTypePointer Output %46
         %48 = OpVariable %47 Output
         %52 = OpConstantComposite %46 %40 %36 %36 %40
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpSelectionMerge %45 None
               OpBranchConditional %43 %44 %51
         %44 = OpLabel
         %49 = OpFunctionCall %6 %8
         %50 = OpCompositeConstruct %46 %49 %49 %49 %49
               OpStore %48 %50
               OpBranch %45
         %51 = OpLabel
               OpStore %48 %52
               OpBranch %45
         %45 = OpLabel
               OpReturn
               OpFunctionEnd
          %8 = OpFunction %6 None %7
          %9 = OpLabel
         %12 = OpVariable %11 Function
               OpStore %12 %13
               OpBranch %14
         %14 = OpLabel
               OpLoopMerge %16 %17 None
               OpBranch %18
         %18 = OpLabel
         %19 = OpLoad %10 %12
         %22 = OpSLessThan %21 %19 %20
               OpBranchConditional %22 %15 %16
         %15 = OpLabel
         %23 = OpLoad %10 %12
         %25 = OpSGreaterThan %21 %23 %24
               OpSelectionMerge %27 None
               OpBranchConditional %25 %26 %27
         %26 = OpLabel
         %28 = OpLoad %10 %12
         %30 = OpIAdd %10 %28 %29
               OpStore %12 %30
               OpBranch %27
         %27 = OpLabel
         %31 = OpLoad %10 %12
         %33 = OpSGreaterThan %21 %31 %32
               OpSelectionMerge %35 None
               OpBranchConditional %33 %34 %35
         %34 = OpLabel
               OpReturnValue %36
         %35 = OpLabel
               OpBranch %17
         %17 = OpLabel
         %38 = OpLoad %10 %12
         %39 = OpIAdd %10 %38 %29
               OpStore %12 %39
               OpBranch %14
         %16 = OpLabel
               OpReturnValue %40
               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