xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-x86-isel-lowering-apfloat-nan-cos-cos.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 X86 ISel lowering and AP Float 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 310 es
# #define _int_1 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
# #define _float_0_54 _GLF_uniform_float_values[0]
# #define _float_0_55 _GLF_uniform_float_values[1]
#
# 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: [0.54, 0.55]
# layout(set = 0, binding = 1) uniform buf1
# {
#     float _GLF_uniform_float_values[2];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     // uintbitstofloat(1) gives a very small denormalized value. The cos of this value
#     // should be very close to 1; perhaps marginally smaller.  The cosine of *that* value
#     // should then be bounded below by 0.54, and might be slightly larger,
#     // so that 0.55 is a suitable upper bound.
#     vec2 v1 = cos(cos(intBitsToFloat(ivec2(-1, _int_1))));
#     _GLF_color = vec4(v1.x);
#
#     if (v1.y > _float_0_54 && v1.y < _float_0_55)
#     {
#         _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: 76
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %29
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %9 "v1"
               OpName %15 "buf0"
               OpMemberName %15 0 "_GLF_uniform_int_values"
               OpName %17 ""
               OpName %29 "_GLF_color"
               OpName %40 "buf1"
               OpMemberName %40 0 "_GLF_uniform_float_values"
               OpName %42 ""
               OpDecorate %14 ArrayStride 16
               OpMemberDecorate %15 0 Offset 0
               OpDecorate %15 Block
               OpDecorate %17 DescriptorSet 0
               OpDecorate %17 Binding 0
               OpDecorate %29 Location 0
               OpDecorate %39 ArrayStride 16
               OpMemberDecorate %40 0 Offset 0
               OpDecorate %40 Block
               OpDecorate %42 DescriptorSet 0
               OpDecorate %42 Binding 1
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 2
          %8 = OpTypePointer Function %7
         %10 = OpTypeInt 32 1
         %11 = OpConstant %10 -1
         %12 = OpTypeInt 32 0
         %13 = OpConstant %12 2
         %14 = OpTypeArray %10 %13
         %15 = OpTypeStruct %14
         %16 = OpTypePointer Uniform %15
         %17 = OpVariable %16 Uniform
         %18 = OpConstant %10 0
         %19 = OpTypePointer Uniform %10
         %22 = OpTypeVector %10 2
         %27 = OpTypeVector %6 4
         %28 = OpTypePointer Output %27
         %29 = OpVariable %28 Output
         %30 = OpConstant %12 0
         %31 = OpTypePointer Function %6
         %35 = OpTypeBool
         %36 = OpConstant %12 1
         %39 = OpTypeArray %6 %13
         %40 = OpTypeStruct %39
         %41 = OpTypePointer Uniform %40
         %42 = OpVariable %41 Uniform
         %43 = OpTypePointer Uniform %6
         %51 = OpConstant %10 1
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %9 = OpVariable %8 Function
         %20 = OpAccessChain %19 %17 %18 %18
         %21 = OpLoad %10 %20
         %23 = OpCompositeConstruct %22 %11 %21
         %24 = OpBitcast %7 %23
         %25 = OpExtInst %7 %1 Cos %24
         %26 = OpExtInst %7 %1 Cos %25
               OpStore %9 %26
         %32 = OpAccessChain %31 %9 %30
         %33 = OpLoad %6 %32
         %34 = OpCompositeConstruct %27 %33 %33 %33 %33
               OpStore %29 %34
         %37 = OpAccessChain %31 %9 %36
         %38 = OpLoad %6 %37
         %44 = OpAccessChain %43 %42 %18 %18
         %45 = OpLoad %6 %44
         %46 = OpFOrdGreaterThan %35 %38 %45
               OpSelectionMerge %48 None
               OpBranchConditional %46 %47 %48
         %47 = OpLabel
         %49 = OpAccessChain %31 %9 %36
         %50 = OpLoad %6 %49
         %52 = OpAccessChain %43 %42 %18 %51
         %53 = OpLoad %6 %52
         %54 = OpFOrdLessThan %35 %50 %53
               OpBranch %48
         %48 = OpLabel
         %55 = OpPhi %35 %46 %5 %54 %47
               OpSelectionMerge %57 None
               OpBranchConditional %55 %56 %71
         %56 = OpLabel
         %58 = OpAccessChain %19 %17 %18 %18
         %59 = OpLoad %10 %58
         %60 = OpConvertSToF %6 %59
         %61 = OpAccessChain %19 %17 %18 %51
         %62 = OpLoad %10 %61
         %63 = OpConvertSToF %6 %62
         %64 = OpAccessChain %19 %17 %18 %51
         %65 = OpLoad %10 %64
         %66 = OpConvertSToF %6 %65
         %67 = OpAccessChain %19 %17 %18 %18
         %68 = OpLoad %10 %67
         %69 = OpConvertSToF %6 %68
         %70 = OpCompositeConstruct %27 %60 %63 %66 %69
               OpStore %29 %70
               OpBranch %57
         %71 = OpLabel
         %72 = OpAccessChain %19 %17 %18 %51
         %73 = OpLoad %10 %72
         %74 = OpConvertSToF %6 %73
         %75 = OpCompositeConstruct %27 %74 %74 %74 %74
               OpStore %29 %75
               OpBranch %57
         %57 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.54 0.55
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 16 16
  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 16 16

EXPECT variant_framebuffer IDX 0 0 SIZE 16 16 EQ_RGBA 255 0 0 255