#!amber

# Copyright 2019 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 GraphicsFuzz.

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

# The test passes because shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '-O'
# spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87


SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 310 es
# precision highp float;
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     vec2 v;
#
#     for(int i = 2; i < 3; i++)
#     {
#         vec4 tmp = vec4(0);
#         tmp.xy = vec2(1.0, float(i));
#         v = tmp.xy;
#     }
#
#     // If condition is always false.
#     if (v.x != 1.0 || v.y != 2.0)
#         _GLF_color = vec4(0);
#     else
#         _GLF_color = vec4(1, 0, 0, 1);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 69
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %57
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %57 "_GLF_color"
               OpDecorate %38 RelaxedPrecision
               OpDecorate %57 Location 0
               OpDecorate %62 RelaxedPrecision
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %9 = OpConstant %6 2
         %16 = OpConstant %6 3
         %17 = OpTypeBool
         %19 = OpTypeFloat 32
         %20 = OpTypeVector %19 4
         %23 = OpConstant %19 0
         %24 = OpConstantComposite %20 %23 %23 %23 %23
         %25 = OpConstant %19 1
         %28 = OpTypeVector %19 2
         %37 = OpConstant %6 1
         %51 = OpConstant %19 2
         %56 = OpTypePointer Output %20
         %57 = OpVariable %56 Output
         %59 = OpConstantComposite %20 %25 %23 %23 %25
         %64 = OpUndef %28
         %68 = OpConstantNull %20
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpBranch %10
         %10 = OpLabel
         %63 = OpPhi %28 %64 %5 %35 %11
         %62 = OpPhi %6 %9 %5 %38 %11
         %18 = OpSLessThan %17 %62 %16
               OpLoopMerge %12 %11 None
               OpBranchConditional %18 %11 %12
         %11 = OpLabel
         %27 = OpConvertSToF %19 %62
         %29 = OpCompositeConstruct %28 %25 %27
         %35 = OpVectorShuffle %28 %29 %68 0 1
         %38 = OpIAdd %6 %62 %37
               OpBranch %10
         %12 = OpLabel
         %43 = OpCompositeExtract %19 %63 0
         %44 = OpFOrdNotEqual %17 %43 %25
         %45 = OpLogicalNot %17 %44
               OpSelectionMerge %47 None
               OpBranchConditional %45 %46 %47
         %46 = OpLabel
         %50 = OpCompositeExtract %19 %63 1
         %52 = OpFOrdNotEqual %17 %50 %51
               OpBranch %47
         %47 = OpLabel
         %53 = OpPhi %17 %44 %12 %52 %46
               OpSelectionMerge %55 None
               OpBranchConditional %53 %54 %58
         %54 = OpLabel
               OpStore %57 %24
               OpBranch %55
         %58 = OpLabel
               OpStore %57 %59
               OpBranch %55
         %55 = OpLabel
               OpReturn
               OpFunctionEnd
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
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