#!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 floating point code 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;
#
# // 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 undefined = sinh(log2(-8.9));
#
#     if (1 == _int_1 || undefined > _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: 62
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %43
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "undefined"
               OpName %17 "buf0"
               OpMemberName %17 0 "_GLF_uniform_int_values"
               OpName %19 ""
               OpName %31 "buf1"
               OpMemberName %31 0 "_GLF_uniform_float_values"
               OpName %33 ""
               OpName %43 "_GLF_color"
               OpDecorate %16 ArrayStride 16
               OpMemberDecorate %17 0 RelaxedPrecision
               OpMemberDecorate %17 0 Offset 0
               OpDecorate %17 Block
               OpDecorate %19 DescriptorSet 0
               OpDecorate %19 Binding 0
               OpDecorate %23 RelaxedPrecision
               OpDecorate %30 ArrayStride 16
               OpMemberDecorate %31 0 Offset 0
               OpDecorate %31 Block
               OpDecorate %33 DescriptorSet 0
               OpDecorate %33 Binding 1
               OpDecorate %43 Location 0
               OpDecorate %45 RelaxedPrecision
               OpDecorate %48 RelaxedPrecision
               OpDecorate %51 RelaxedPrecision
               OpDecorate %54 RelaxedPrecision
               OpDecorate %59 RelaxedPrecision
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpConstant %6 0x1.8p+128
         %11 = OpTypeBool
         %12 = OpTypeInt 32 1
         %13 = OpConstant %12 1
         %14 = OpTypeInt 32 0
         %15 = OpConstant %14 2
         %16 = OpTypeArray %12 %15
         %17 = OpTypeStruct %16
         %18 = OpTypePointer Uniform %17
         %19 = OpVariable %18 Uniform
         %20 = OpConstant %12 0
         %21 = OpTypePointer Uniform %12
         %29 = OpConstant %14 1
         %30 = OpTypeArray %6 %29
         %31 = OpTypeStruct %30
         %32 = OpTypePointer Uniform %31
         %33 = OpVariable %32 Uniform
         %34 = OpTypePointer Uniform %6
         %41 = OpTypeVector %6 4
         %42 = OpTypePointer Output %41
         %43 = OpVariable %42 Output
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %10 = OpExtInst %6 %1 Sinh %9
               OpStore %8 %10
         %22 = OpAccessChain %21 %19 %20 %20
         %23 = OpLoad %12 %22
         %24 = OpIEqual %11 %13 %23
         %25 = OpLogicalNot %11 %24
               OpSelectionMerge %27 None
               OpBranchConditional %25 %26 %27
         %26 = OpLabel
         %28 = OpLoad %6 %8
         %35 = OpAccessChain %34 %33 %20 %20
         %36 = OpLoad %6 %35
         %37 = OpFOrdGreaterThan %11 %28 %36
               OpBranch %27
         %27 = OpLabel
         %38 = OpPhi %11 %24 %5 %37 %26
               OpSelectionMerge %40 None
               OpBranchConditional %38 %39 %57
         %39 = OpLabel
         %44 = OpAccessChain %21 %19 %20 %20
         %45 = OpLoad %12 %44
         %46 = OpConvertSToF %6 %45
         %47 = OpAccessChain %21 %19 %20 %13
         %48 = OpLoad %12 %47
         %49 = OpConvertSToF %6 %48
         %50 = OpAccessChain %21 %19 %20 %13
         %51 = OpLoad %12 %50
         %52 = OpConvertSToF %6 %51
         %53 = OpAccessChain %21 %19 %20 %20
         %54 = OpLoad %12 %53
         %55 = OpConvertSToF %6 %54
         %56 = OpCompositeConstruct %41 %46 %49 %52 %55
               OpStore %43 %56
               OpBranch %40
         %57 = OpLabel
         %58 = OpAccessChain %21 %19 %20 %13
         %59 = OpLoad %12 %58
         %60 = OpConvertSToF %6 %59
         %61 = OpCompositeConstruct %41 %60 %60 %60 %60
               OpStore %43 %61
               OpBranch %40
         %40 = 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