xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-modulo-zero-never-executed.amber

#!amber

# Copyright 2021 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 NIR code paths

# The test passes because the shader always writes red.

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 _uint_5 _GLF_uniform_uint_values[0]
# #define _float_0_0 _GLF_uniform_float_values[0]
#
# precision highp int;
# precision highp float;
#
# // Contents of _GLF_uniform_float_values: 0.0
# layout(set = 0, binding = 0) uniform buf0
# {
#     float _GLF_uniform_float_values[1];
# };
#
# // Contents of _GLF_uniform_uint_values: 5
# layout(set = 0, binding = 1) uniform buf1
# {
#     uint _GLF_uniform_uint_values[1];
# };
#
# // Contents of _GLF_uniform_int_values: [0, 1]
# layout(set = 0, binding = 2) uniform buf2
# {
#     int _GLF_uniform_int_values[2];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     uint a = 0u;
#     int b = _int_1;
#
#     // Always false.
#     if (gl_FragCoord.x < _float_0_0)
#     {
#         // Modulo of zero is undefined, but this is never executed.
#         b = int(_uint_5 % a);
#     }
#
#     // Always true.
#     if (b == _int_1)
#     {
#         _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: 78
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %26 %59
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %8 "a"
               OpName %12 "b"
               OpName %15 "buf2"
               OpMemberName %15 0 "_GLF_uniform_int_values"
               OpName %17 ""
               OpName %26 "gl_FragCoord"
               OpName %32 "buf0"
               OpMemberName %32 0 "_GLF_uniform_float_values"
               OpName %34 ""
               OpName %43 "buf1"
               OpMemberName %43 0 "_GLF_uniform_uint_values"
               OpName %45 ""
               OpName %59 "_GLF_color"
               OpDecorate %14 ArrayStride 16
               OpMemberDecorate %15 0 Offset 0
               OpDecorate %15 Block
               OpDecorate %17 DescriptorSet 0
               OpDecorate %17 Binding 2
               OpDecorate %26 BuiltIn FragCoord
               OpDecorate %31 ArrayStride 16
               OpMemberDecorate %32 0 Offset 0
               OpDecorate %32 Block
               OpDecorate %34 DescriptorSet 0
               OpDecorate %34 Binding 0
               OpDecorate %42 ArrayStride 16
               OpMemberDecorate %43 0 Offset 0
               OpDecorate %43 Block
               OpDecorate %45 DescriptorSet 0
               OpDecorate %45 Binding 1
               OpDecorate %59 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 0
          %7 = OpTypePointer Function %6
          %9 = OpConstant %6 0
         %10 = OpTypeInt 32 1
         %11 = OpTypePointer Function %10
         %13 = OpConstant %6 2
         %14 = OpTypeArray %10 %13
         %15 = OpTypeStruct %14
         %16 = OpTypePointer Uniform %15
         %17 = OpVariable %16 Uniform
         %18 = OpConstant %10 0
         %19 = OpConstant %10 1
         %20 = OpTypePointer Uniform %10
         %23 = OpTypeFloat 32
         %24 = OpTypeVector %23 4
         %25 = OpTypePointer Input %24
         %26 = OpVariable %25 Input
         %27 = OpTypePointer Input %23
         %30 = OpConstant %6 1
         %31 = OpTypeArray %23 %30
         %32 = OpTypeStruct %31
         %33 = OpTypePointer Uniform %32
         %34 = OpVariable %33 Uniform
         %35 = OpTypePointer Uniform %23
         %38 = OpTypeBool
         %42 = OpTypeArray %6 %30
         %43 = OpTypeStruct %42
         %44 = OpTypePointer Uniform %43
         %45 = OpVariable %44 Uniform
         %46 = OpTypePointer Uniform %6
         %58 = OpTypePointer Output %24
         %59 = OpVariable %58 Output
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %12 = OpVariable %11 Function
               OpStore %8 %9
         %21 = OpAccessChain %20 %17 %18 %19
         %22 = OpLoad %10 %21
               OpStore %12 %22
         %28 = OpAccessChain %27 %26 %9
         %29 = OpLoad %23 %28
         %36 = OpAccessChain %35 %34 %18 %18
         %37 = OpLoad %23 %36
         %39 = OpFOrdLessThan %38 %29 %37
               OpSelectionMerge %41 None
               OpBranchConditional %39 %40 %41
         %40 = OpLabel
         %47 = OpAccessChain %46 %45 %18 %18
         %48 = OpLoad %6 %47
         %49 = OpLoad %6 %8
         %50 = OpUMod %6 %48 %49
         %51 = OpBitcast %10 %50
               OpStore %12 %51
               OpBranch %41
         %41 = OpLabel
         %52 = OpLoad %10 %12
         %53 = OpAccessChain %20 %17 %18 %19
         %54 = OpLoad %10 %53
         %55 = OpIEqual %38 %52 %54
               OpSelectionMerge %57 None
               OpBranchConditional %55 %56 %73
         %56 = OpLabel
         %60 = OpAccessChain %20 %17 %18 %19
         %61 = OpLoad %10 %60
         %62 = OpConvertSToF %23 %61
         %63 = OpAccessChain %20 %17 %18 %18
         %64 = OpLoad %10 %63
         %65 = OpConvertSToF %23 %64
         %66 = OpAccessChain %20 %17 %18 %18
         %67 = OpLoad %10 %66
         %68 = OpConvertSToF %23 %67
         %69 = OpAccessChain %20 %17 %18 %19
         %70 = OpLoad %10 %69
         %71 = OpConvertSToF %23 %70
         %72 = OpCompositeConstruct %24 %62 %65 %68 %71
               OpStore %59 %72
               OpBranch %57
         %73 = OpLabel
         %74 = OpAccessChain %20 %17 %18 %18
         %75 = OpLoad %10 %74
         %76 = OpConvertSToF %23 %75
         %77 = OpCompositeConstruct %24 %76 %76 %76 %76
               OpStore %59 %77
               OpBranch %57
         %57 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 0 1
END
# _GLF_uniform_uint_values
BUFFER variant__GLF_uniform_uint_values DATA_TYPE int32[] STD140 DATA
 5
END
# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.0
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__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 2
  BIND BUFFER variant__GLF_uniform_uint_values AS uniform DESCRIPTOR_SET 0 BINDING 1
  BIND BUFFER variant__GLF_uniform_float_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 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255