# Copyright 2018 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 GraphicsFuzz.
# A fragment shader that uses struct initializers.
# Derived from the following GLSL fragment shader.
# We check that all pixels are red. The test passes because main does
# some computation and then writes red to _GLF_color.

# #version 310 es
#
# precision highp float;
# precision highp int;
#
# layout(location = 0) out vec4 _GLF_color;
#
# struct S {
#  bool b;
# };
#
# S foo()
# {
#  if(true)
#   {
#      return S(true);
#   }
#   return S(true);
# }
# void main(void)
# {
#   foo();
#   _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
# }

[vertex shader passthrough]

[fragment shader spirv]
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 7
; Bound: 26
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %main "main" %_GLF_color
               OpExecutionMode %main OriginUpperLeft
               OpSource ESSL 310
               OpName %main "main"
               OpName %S "S"
               OpMemberName %S 0 "b"
               OpName %foo_ "foo("
               OpName %_GLF_color "_GLF_color"
               OpDecorate %_GLF_color Location 0
       %void = OpTypeVoid
          %3 = OpTypeFunction %void
       %bool = OpTypeBool
          %S = OpTypeStruct %bool
          %8 = OpTypeFunction %S
       %true = OpConstantTrue %bool
         %14 = OpConstantComposite %S %true
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
 %_GLF_color = OpVariable %_ptr_Output_v4float Output
    %float_1 = OpConstant %float 1
    %float_0 = OpConstant %float 0
         %25 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
       %main = OpFunction %void None %3
          %5 = OpLabel
         %18 = OpFunctionCall %S %foo_
               OpStore %_GLF_color %25
               OpReturn
               OpFunctionEnd
       %foo_ = OpFunction %S None %8
         %10 = OpLabel
               OpSelectionMerge %13 None
               OpBranchConditional %true %12 %13
         %12 = OpLabel
               OpReturnValue %14
         %13 = OpLabel
               OpReturnValue %14
               OpFunctionEnd

[test]
draw rect -1 -1 2 2
probe all rgba 1 0 0 1