#!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 bug found by the GraphicsFuzz project.

# Short description: A fragment shader with vec2 in modulus fraction function

# The test passes because the shader always writes the color red.

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# precision highp float;
#
# precision highp int;
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     vec2 uv = vec2(1.0, 1.0);
#     uv.x = (modf(1.0, uv.y));
#     // uv.y == 1.0, uv.x == 0.0
#     if (uv.y > 0.0 && uv.x < 1.0)
#     {
#         _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
#     }
#     else
#     {
#         _GLF_color = vec4(1.0);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 38
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %34
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %9 "uv"
               OpName %34 "_GLF_color"
               OpDecorate %34 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 2
          %8 = OpTypePointer Function %7
         %10 = OpConstant %6 1
         %11 = OpConstantComposite %7 %10 %10
         %12 = OpTypeInt 32 0
         %13 = OpConstant %12 1
         %14 = OpTypePointer Function %6
         %17 = OpConstant %12 0
         %19 = OpTypeBool
         %22 = OpConstant %6 0
         %32 = OpTypeVector %6 4
         %33 = OpTypePointer Output %32
         %34 = OpVariable %33 Output
         %35 = OpConstantComposite %32 %10 %22 %22 %10
         %37 = OpConstantComposite %32 %10 %10 %10 %10
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %9 = OpVariable %8 Function
               OpStore %9 %11
         %15 = OpAccessChain %14 %9 %13
         %16 = OpExtInst %6 %1 Modf %10 %15
         %18 = OpAccessChain %14 %9 %17
               OpStore %18 %16
         %20 = OpAccessChain %14 %9 %13
         %21 = OpLoad %6 %20
         %23 = OpFOrdGreaterThan %19 %21 %22
               OpSelectionMerge %25 None
               OpBranchConditional %23 %24 %25
         %24 = OpLabel
         %26 = OpAccessChain %14 %9 %17
         %27 = OpLoad %6 %26
         %28 = OpFOrdLessThan %19 %27 %10
               OpBranch %25
         %25 = OpLabel
         %29 = OpPhi %19 %23 %5 %28 %24
               OpSelectionMerge %31 None
               OpBranchConditional %29 %30 %36
         %30 = OpLabel
               OpStore %34 %35
               OpBranch %31
         %36 = OpLabel
               OpStore %34 %37
               OpBranch %31
         %31 = 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