xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-loop-condition-constant-struct-field-data.amber

#!amber

# Copyright 2022 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 the GraphicsFuzz project.

# Short description: A fragment shader that covers specific LLVM code paths

# The test passes because the shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '--eliminate-dead-branches'
# '--if-conversion'
# '--redundancy-elimination'
# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af



SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# #define _int_0 _GLF_uniform_int_values[0]
# #define _int_1 _GLF_uniform_int_values[1]
# #define _int_2 _GLF_uniform_int_values[2]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [0, 1, 2]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[3];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# const int _GLF_global_loop_bound = 10;
# int _GLF_global_loop_count = 0;
#
# struct S
# {
#     int data0;
#     int data1;
# };
#
# void main()
# {
#     int a = _int_0;
#
#     // Iterates once.
#     while(_GLF_global_loop_count < _GLF_global_loop_bound)
#     {
#         _GLF_global_loop_count++;
#
#         // Iterates until the global loop count is reached.
#         while(a != 1 && _GLF_global_loop_count < _GLF_global_loop_bound)
#         {
#             _GLF_global_loop_count++;
#
#             // a becomes 2.
#             a = S(_int_1, 2).data1;
#         }
#     }
#
#     // Always true.
#     if(a == _int_2)
#     {
#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
#     }
#     else
#     {
#         _GLF_color = vec4(_int_0);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 79
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %60
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %8 "_GLF_global_loop_count"
               OpName %11 "a"
               OpName %15 "buf0"
               OpMemberName %15 0 "_GLF_uniform_int_values"
               OpName %17 ""
               OpName %48 "S"
               OpMemberName %48 0 "data0"
               OpMemberName %48 1 "data1"
               OpName %60 "_GLF_color"
               OpDecorate %14 ArrayStride 16
               OpMemberDecorate %15 0 Offset 0
               OpDecorate %15 Block
               OpDecorate %17 DescriptorSet 0
               OpDecorate %17 Binding 0
               OpDecorate %60 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %7 = OpTypePointer Private %6
          %8 = OpVariable %7 Private
          %9 = OpConstant %6 0
         %10 = OpTypePointer Function %6
         %12 = OpTypeInt 32 0
         %13 = OpConstant %12 3
         %14 = OpTypeArray %6 %13
         %15 = OpTypeStruct %14
         %16 = OpTypePointer Uniform %15
         %17 = OpVariable %16 Uniform
         %18 = OpTypePointer Uniform %6
         %27 = OpConstant %6 10
         %28 = OpTypeBool
         %31 = OpConstant %6 1
         %47 = OpConstant %6 2
         %48 = OpTypeStruct %6 %6
         %57 = OpTypeFloat 32
         %58 = OpTypeVector %57 4
         %59 = OpTypePointer Output %58
         %60 = OpVariable %59 Output
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %11 = OpVariable %10 Function
               OpStore %8 %9
         %19 = OpAccessChain %18 %17 %9 %9
         %20 = OpLoad %6 %19
               OpStore %11 %20
               OpBranch %21
         %21 = OpLabel
               OpLoopMerge %23 %24 None
               OpBranch %25
         %25 = OpLabel
         %26 = OpLoad %6 %8
         %29 = OpSLessThan %28 %26 %27
               OpBranchConditional %29 %22 %23
         %22 = OpLabel
         %30 = OpLoad %6 %8
         %32 = OpIAdd %6 %30 %31
               OpStore %8 %32
               OpBranch %33
         %33 = OpLabel
               OpLoopMerge %35 %36 None
               OpBranch %37
         %37 = OpLabel
         %38 = OpLoad %6 %11
         %39 = OpINotEqual %28 %38 %31
         %40 = OpLoad %6 %8
         %41 = OpSLessThan %28 %40 %27
         %42 = OpLogicalAnd %28 %39 %41
               OpBranchConditional %42 %34 %35
         %34 = OpLabel
         %43 = OpLoad %6 %8
         %44 = OpIAdd %6 %43 %31
               OpStore %8 %44
         %45 = OpAccessChain %18 %17 %9 %31
         %46 = OpLoad %6 %45
         %49 = OpCompositeConstruct %48 %46 %47
         %50 = OpCompositeExtract %6 %49 1
               OpStore %11 %50
               OpBranch %36
         %36 = OpLabel
               OpBranch %33
         %35 = OpLabel
               OpBranch %24
         %24 = OpLabel
               OpBranch %21
         %23 = OpLabel
         %51 = OpLoad %6 %11
         %52 = OpAccessChain %18 %17 %9 %47
         %53 = OpLoad %6 %52
         %54 = OpIEqual %28 %51 %53
               OpSelectionMerge %56 None
               OpBranchConditional %54 %55 %74
         %55 = OpLabel
         %61 = OpAccessChain %18 %17 %9 %31
         %62 = OpLoad %6 %61
         %63 = OpConvertSToF %57 %62
         %66 = OpConvertSToF %57 %20
         %73 = OpCompositeConstruct %58 %63 %66 %66 %63
               OpStore %60 %73
               OpBranch %56
         %74 = OpLabel
         %77 = OpConvertSToF %57 %20
         %78 = OpCompositeConstruct %58 %77 %77 %77 %77
               OpStore %60 %78
               OpBranch %56
         %56 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 0 1 2
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 32 32
  BIND BUFFER variant_framebuffer AS color LOCATION 0
  BIND BUFFER variant__GLF_uniform_int_values 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 32 32

EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255