#!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 inst combine compares code path

# The test passes because the shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '-O'
# spirv-opt commit hash: a187dd58a0485988841d325a85c8e6063f53500a


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 _int_10 _GLF_uniform_int_values[2]
#
# precision highp float;
#
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [1, 0, 10]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[3];
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     _GLF_color = vec4(_int_0);
#
#     // c becomes 1.
#     int c = (_int_1 << _int_1) >> 1;
#
#     int a = _int_0;
#     for (int i = c; c < 10; i++)
#     {
#         a++;
#         if (a == _int_10)
#         {
#             _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
#             break;
#         }
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 72
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %9
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %9 "_GLF_color"
               OpName %14 "buf0"
               OpMemberName %14 0 "_GLF_uniform_int_values"
               OpName %16 ""
               OpDecorate %9 Location 0
               OpDecorate %13 ArrayStride 16
               OpMemberDecorate %14 0 Offset 0
               OpDecorate %14 Block
               OpDecorate %16 DescriptorSet 0
               OpDecorate %16 Binding 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 4
          %8 = OpTypePointer Output %7
          %9 = OpVariable %8 Output
         %10 = OpTypeInt 32 1
         %11 = OpTypeInt 32 0
         %12 = OpConstant %11 3
         %13 = OpTypeArray %10 %12
         %14 = OpTypeStruct %13
         %15 = OpTypePointer Uniform %14
         %16 = OpVariable %15 Uniform
         %17 = OpConstant %10 0
         %18 = OpConstant %10 1
         %19 = OpTypePointer Uniform %10
         %43 = OpConstant %10 10
         %44 = OpTypeBool
         %49 = OpConstant %10 2
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %20 = OpAccessChain %19 %16 %17 %18
         %21 = OpLoad %10 %20
         %22 = OpConvertSToF %6 %21
         %23 = OpCompositeConstruct %7 %22 %22 %22 %22
               OpStore %9 %23
         %26 = OpAccessChain %19 %16 %17 %17
         %27 = OpLoad %10 %26
         %30 = OpShiftLeftLogical %10 %27 %27
         %31 = OpShiftRightArithmetic %10 %30 %18
               OpBranch %37
         %37 = OpLabel
         %71 = OpPhi %10 %21 %5 %47 %40
         %45 = OpSLessThan %44 %31 %43
               OpLoopMerge %39 %40 None
               OpBranchConditional %45 %38 %39
         %38 = OpLabel
         %47 = OpIAdd %10 %71 %18
         %50 = OpAccessChain %19 %16 %17 %49
         %51 = OpLoad %10 %50
         %52 = OpIEqual %44 %47 %51
               OpSelectionMerge %54 None
               OpBranchConditional %52 %53 %54
         %53 = OpLabel
         %57 = OpConvertSToF %6 %27
         %67 = OpCompositeConstruct %7 %57 %22 %22 %57
               OpStore %9 %67
               OpBranch %39
         %54 = OpLabel
               OpBranch %40
         %40 = OpLabel
               OpBranch %37
         %39 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 1 0 10
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 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