xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-wrap-op-kill-two-branches.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 OpKill wrapping path.

# The test passes because shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '--convert-local-access-chains'
# '--eliminate-dead-branches'
# '--merge-blocks'
# '--eliminate-local-single-store'
# '--eliminate-dead-branches'
# '--merge-return'
# '--inline-entry-points-exhaustive'
# '--copy-propagate-arrays'
# '--if-conversion'
# '--reduce-load-size'
# '--convert-local-access-chains'
# '--if-conversion'
# '--redundancy-elimination'
# '--if-conversion'
# '--simplify-instructions'
# '--scalar-replacement=100'
# '--simplify-instructions'
# '--if-conversion'
# '--eliminate-dead-inserts'
# '--eliminate-dead-branches'
# '--eliminate-dead-code-aggressive'
# spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87



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
# {
#     int five;
# };
#
# float func(float x)
# {
#     if (x > 5.0)
#     {
#         if (gl_FragCoord.x < 0.5)
#             discard;
#         else if (gl_FragCoord.y < 0.5)
#             discard;
#     }
#
#     return x + 1.0;
# }
#
# void main()
# {
#     float f = 0.0;
#
#     for(int i = 0; i < five; i++)
#         f = func(float(i));
#
#     if (f == 5.0)
#         _GLF_color = vec4(1, 0, 0, 1);
#     else
#         _GLF_color = vec4(0);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 79
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %20 %75
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %10 "func(f1;"
               OpName %9 "x"
               OpName %20 "gl_FragCoord"
               OpName %44 "f"
               OpName %48 "i"
               OpName %56 "buf0"
               OpMemberName %56 0 "five"
               OpName %58 ""
               OpName %65 "param"
               OpName %75 "_GLF_color"
               OpDecorate %20 BuiltIn FragCoord
               OpMemberDecorate %56 0 Offset 0
               OpDecorate %56 Block
               OpDecorate %58 DescriptorSet 0
               OpDecorate %58 Binding 0
               OpDecorate %75 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %8 = OpTypeFunction %6 %7
         %13 = OpConstant %6 5
         %14 = OpTypeBool
         %18 = OpTypeVector %6 4
         %19 = OpTypePointer Input %18
         %20 = OpVariable %19 Input
         %21 = OpTypeInt 32 0
         %22 = OpConstant %21 0
         %23 = OpTypePointer Input %6
         %26 = OpConstant %6 0.5
         %32 = OpConstant %21 1
         %40 = OpConstant %6 1
         %45 = OpConstant %6 0
         %46 = OpTypeInt 32 1
         %47 = OpTypePointer Function %46
         %49 = OpConstant %46 0
         %56 = OpTypeStruct %46
         %57 = OpTypePointer Uniform %56
         %58 = OpVariable %57 Uniform
         %59 = OpTypePointer Uniform %46
         %68 = OpConstant %46 1
         %74 = OpTypePointer Output %18
         %75 = OpVariable %74 Output
         %76 = OpConstantComposite %18 %40 %45 %45 %40
         %78 = OpConstantComposite %18 %45 %45 %45 %45
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %44 = OpVariable %7 Function
         %48 = OpVariable %47 Function
         %65 = OpVariable %7 Function
               OpStore %44 %45
               OpStore %48 %49
               OpBranch %50
         %50 = OpLabel
         %55 = OpLoad %46 %48
         %60 = OpAccessChain %59 %58 %49
         %61 = OpLoad %46 %60
         %62 = OpSLessThan %14 %55 %61
               OpLoopMerge %52 %51 None
               OpBranchConditional %62 %51 %52
         %51 = OpLabel
         %63 = OpLoad %46 %48
         %64 = OpConvertSToF %6 %63
               OpStore %65 %64
         %66 = OpFunctionCall %6 %10 %65
               OpStore %44 %66
         %67 = OpLoad %46 %48
         %69 = OpIAdd %46 %67 %68
               OpStore %48 %69
               OpBranch %50
         %52 = OpLabel
         %70 = OpLoad %6 %44
         %71 = OpFOrdEqual %14 %70 %13
               OpSelectionMerge %73 None
               OpBranchConditional %71 %72 %77
         %72 = OpLabel
               OpStore %75 %76
               OpBranch %73
         %77 = OpLabel
               OpStore %75 %78
               OpBranch %73
         %73 = OpLabel
               OpReturn
               OpFunctionEnd
         %10 = OpFunction %6 None %8
          %9 = OpFunctionParameter %7
         %11 = OpLabel
         %12 = OpLoad %6 %9
         %15 = OpFOrdGreaterThan %14 %12 %13
               OpSelectionMerge %17 None
               OpBranchConditional %15 %16 %17
         %16 = OpLabel
         %24 = OpAccessChain %23 %20 %22
         %25 = OpLoad %6 %24
         %27 = OpFOrdLessThan %14 %25 %26
               OpSelectionMerge %29 None
               OpBranchConditional %27 %28 %31
         %28 = OpLabel
               OpKill
         %31 = OpLabel
         %33 = OpAccessChain %23 %20 %32
         %34 = OpLoad %6 %33
         %35 = OpFOrdLessThan %14 %34 %26
               OpSelectionMerge %37 None
               OpBranchConditional %35 %36 %37
         %36 = OpLabel
               OpKill
         %37 = OpLabel
               OpBranch %29
         %29 = OpLabel
               OpBranch %17
         %17 = OpLabel
         %39 = OpLoad %6 %9
         %41 = OpFAdd %6 %39 %40
               OpReturnValue %41
               OpFunctionEnd
END

# uniforms for variant

# five
BUFFER variant_five DATA_TYPE int32 DATA
 5
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_five 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