xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-const-folding-pow-large-exp.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 the GraphicsFuzz project.

# Short description: A fragment shader that covers a specific const folding path

# 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 310 es
# #define _int_1 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
# #define _float_0_0 _GLF_uniform_float_values[0]
#
# precision highp float;
#
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [1, 0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[2];
# };
#
# // Contents of _GLF_uniform_float_values: 0.0
# layout(set = 0, binding = 1) uniform buf1
# {
#     float _GLF_uniform_float_values[1];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     // This results in an undefined value, but not in undefined behavior.
#     float f = pow(40.33, ldexp(1.0, 98980));
#
#     if (_int_1 == (_int_1 + _int_0) || f > _float_0_0)
#         _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; 8
; Bound: 70
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %51
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "f"
               OpName %19 "buf0"
               OpMemberName %19 0 "_GLF_uniform_int_values"
               OpName %21 ""
               OpName %39 "buf1"
               OpMemberName %39 0 "_GLF_uniform_float_values"
               OpName %41 ""
               OpName %51 "_GLF_color"
               OpDecorate %18 ArrayStride 16
               OpMemberDecorate %19 0 Offset 0
               OpDecorate %19 Block
               OpDecorate %21 DescriptorSet 0
               OpDecorate %21 Binding 0
               OpDecorate %38 ArrayStride 16
               OpMemberDecorate %39 0 Offset 0
               OpDecorate %39 Block
               OpDecorate %41 DescriptorSet 0
               OpDecorate %41 Binding 1
               OpDecorate %51 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpConstant %6 40.3300018
         %10 = OpConstant %6 1
         %11 = OpTypeInt 32 1
         %12 = OpConstant %11 98980
         %15 = OpTypeBool
         %16 = OpTypeInt 32 0
         %17 = OpConstant %16 2
         %18 = OpTypeArray %11 %17
         %19 = OpTypeStruct %18
         %20 = OpTypePointer Uniform %19
         %21 = OpVariable %20 Uniform
         %22 = OpConstant %11 0
         %23 = OpTypePointer Uniform %11
         %28 = OpConstant %11 1
         %37 = OpConstant %16 1
         %38 = OpTypeArray %6 %37
         %39 = OpTypeStruct %38
         %40 = OpTypePointer Uniform %39
         %41 = OpVariable %40 Uniform
         %42 = OpTypePointer Uniform %6
         %49 = OpTypeVector %6 4
         %50 = OpTypePointer Output %49
         %51 = OpVariable %50 Output
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %13 = OpExtInst %6 %1 Ldexp %10 %12
         %14 = OpExtInst %6 %1 Pow %9 %13
               OpStore %8 %14
         %24 = OpAccessChain %23 %21 %22 %22
         %25 = OpLoad %11 %24
         %26 = OpAccessChain %23 %21 %22 %22
         %27 = OpLoad %11 %26
         %29 = OpAccessChain %23 %21 %22 %28
         %30 = OpLoad %11 %29
         %31 = OpIAdd %11 %27 %30
         %32 = OpIEqual %15 %25 %31
         %33 = OpLogicalNot %15 %32
               OpSelectionMerge %35 None
               OpBranchConditional %33 %34 %35
         %34 = OpLabel
         %36 = OpLoad %6 %8
         %43 = OpAccessChain %42 %41 %22 %22
         %44 = OpLoad %6 %43
         %45 = OpFOrdGreaterThan %15 %36 %44
               OpBranch %35
         %35 = OpLabel
         %46 = OpPhi %15 %32 %5 %45 %34
               OpSelectionMerge %48 None
               OpBranchConditional %46 %47 %65
         %47 = OpLabel
         %52 = OpAccessChain %23 %21 %22 %22
         %53 = OpLoad %11 %52
         %54 = OpConvertSToF %6 %53
         %55 = OpAccessChain %23 %21 %22 %28
         %56 = OpLoad %11 %55
         %57 = OpConvertSToF %6 %56
         %58 = OpAccessChain %23 %21 %22 %28
         %59 = OpLoad %11 %58
         %60 = OpConvertSToF %6 %59
         %61 = OpAccessChain %23 %21 %22 %22
         %62 = OpLoad %11 %61
         %63 = OpConvertSToF %6 %62
         %64 = OpCompositeConstruct %49 %54 %57 %60 %63
               OpStore %51 %64
               OpBranch %48
         %65 = OpLabel
         %66 = OpAccessChain %23 %21 %22 %28
         %67 = OpLoad %11 %66
         %68 = OpConvertSToF %6 %67
         %69 = OpCompositeConstruct %49 %68 %68 %68 %68
               OpStore %51 %69
               OpBranch %48
         %48 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 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__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
  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 256 256

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