#!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 instruction simplification 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 _float_0_0 _GLF_uniform_float_values[0]
# #define _float_10_0 _GLF_uniform_float_values[0]
#
# precision highp float;
#
# precision highp int;
#
# // Contents of _GLF_uniform_float_values: [0.0, 10.0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     float _GLF_uniform_float_values[2];
# };
#
# // Contents of _GLF_uniform_int_values: 1
# layout(set = 0, binding = 1) uniform buf1
# {
#     int _GLF_uniform_int_values[1];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     float a = mod(_float_10_0, 1.);
#
#     if (a == _float_0_0)
#     {
#         _GLF_color = vec4(_int_1, a, a, _int_1);
#     }
#     else
#     {
#         _GLF_color = vec4(a);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 50
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %31
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "a"
               OpName %12 "buf0"
               OpMemberName %12 0 "_GLF_uniform_float_values"
               OpName %14 ""
               OpName %31 "_GLF_color"
               OpName %34 "buf1"
               OpMemberName %34 0 "_GLF_uniform_int_values"
               OpName %36 ""
               OpDecorate %11 ArrayStride 16
               OpMemberDecorate %12 0 Offset 0
               OpDecorate %12 Block
               OpDecorate %14 DescriptorSet 0
               OpDecorate %14 Binding 0
               OpDecorate %31 Location 0
               OpDecorate %33 ArrayStride 16
               OpMemberDecorate %34 0 Offset 0
               OpDecorate %34 Block
               OpDecorate %36 DescriptorSet 0
               OpDecorate %36 Binding 1
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpTypeInt 32 0
         %10 = OpConstant %9 2
         %11 = OpTypeArray %6 %10
         %12 = OpTypeStruct %11
         %13 = OpTypePointer Uniform %12
         %14 = OpVariable %13 Uniform
         %15 = OpTypeInt 32 1
         %16 = OpConstant %15 0
         %17 = OpTypePointer Uniform %6
         %20 = OpConstant %6 1
         %25 = OpTypeBool
         %29 = OpTypeVector %6 4
         %30 = OpTypePointer Output %29
         %31 = OpVariable %30 Output
         %32 = OpConstant %9 1
         %33 = OpTypeArray %15 %32
         %34 = OpTypeStruct %33
         %35 = OpTypePointer Uniform %34
         %36 = OpVariable %35 Uniform
         %37 = OpTypePointer Uniform %15
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %18 = OpAccessChain %17 %14 %16 %16
         %19 = OpLoad %6 %18
         %21 = OpFMod %6 %19 %20
               OpStore %8 %21
         %22 = OpLoad %6 %8
         %23 = OpAccessChain %17 %14 %16 %16
         %24 = OpLoad %6 %23
         %26 = OpFOrdEqual %25 %22 %24
               OpSelectionMerge %28 None
               OpBranchConditional %26 %27 %47
         %27 = OpLabel
         %38 = OpAccessChain %37 %36 %16 %16
         %39 = OpLoad %15 %38
         %40 = OpConvertSToF %6 %39
         %41 = OpLoad %6 %8
         %42 = OpLoad %6 %8
         %43 = OpAccessChain %37 %36 %16 %16
         %44 = OpLoad %15 %43
         %45 = OpConvertSToF %6 %44
         %46 = OpCompositeConstruct %29 %40 %41 %42 %45
               OpStore %31 %46
               OpBranch %28
         %47 = OpLabel
         %48 = OpLoad %6 %8
         %49 = OpCompositeConstruct %29 %48 %48 %48 %48
               OpStore %31 %49
               OpBranch %28
         %28 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 1
END
# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 0.0 10.0
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_int_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 16 16

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