#!amber

# Copyright 2020 Valve Corporation.
# Copyright 2020 The Khronos Group Inc.
#
# 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.

DEVICE_EXTENSION VK_KHR_shader_float_controls
DEVICE_EXTENSION VK_KHR_spirv_1_4

SHADER vertex vtx_shader SPIRV-ASM
; Based on:
;
; #version 450
; #extension GL_ARB_enhanced_layouts : require
;
; layout(location=0) in vec4 in_pos;
;
; layout(location=0) out OutputBlock
; {
;     layout(location=0) vec4 out_color;
; };
;
; void main()
; {
;     gl_Position = in_pos;
;     out_color = vec4(0.0, 1.0, 0.0, 1.0);
; }

; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 8
; Bound: 28
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Vertex %main "main" %_ %in_pos %__0
               OpSource GLSL 450
               OpSourceExtension "GL_ARB_enhanced_layouts"
               OpName %main "main"
               OpName %gl_PerVertex "gl_PerVertex"
               OpMemberName %gl_PerVertex 0 "gl_Position"
               OpMemberName %gl_PerVertex 1 "gl_PointSize"
               OpMemberName %gl_PerVertex 2 "gl_ClipDistance"
               OpMemberName %gl_PerVertex 3 "gl_CullDistance"
               OpName %_ ""
               OpName %in_pos "in_pos"
               OpName %OutputBlock "OutputBlock"
               OpMemberName %OutputBlock 0 "out_color"
               OpName %__0 ""
               OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
               OpMemberDecorate %gl_PerVertex 1 BuiltIn PointSize
               OpMemberDecorate %gl_PerVertex 2 BuiltIn ClipDistance
               OpMemberDecorate %gl_PerVertex 3 BuiltIn CullDistance
               OpDecorate %gl_PerVertex Block
               OpDecorate %in_pos Location 0
               OpMemberDecorate %OutputBlock 0 Location 0
; Testing OpMemberDecorateString below.
               OpMemberDecorateString %OutputBlock 0 UserSemantic "FOO"
               OpDecorate %OutputBlock Block
       %void = OpTypeVoid
          %3 = OpTypeFunction %void
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
       %uint = OpTypeInt 32 0
     %uint_1 = OpConstant %uint 1
%_arr_float_uint_1 = OpTypeArray %float %uint_1
%gl_PerVertex = OpTypeStruct %v4float %float %_arr_float_uint_1 %_arr_float_uint_1
%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
          %_ = OpVariable %_ptr_Output_gl_PerVertex Output
        %int = OpTypeInt 32 1
      %int_0 = OpConstant %int 0
%_ptr_Input_v4float = OpTypePointer Input %v4float
     %in_pos = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%OutputBlock = OpTypeStruct %v4float
%_ptr_Output_OutputBlock = OpTypePointer Output %OutputBlock
        %__0 = OpVariable %_ptr_Output_OutputBlock Output
    %float_0 = OpConstant %float 0
    %float_1 = OpConstant %float 1
         %26 = OpConstantComposite %v4float %float_0 %float_1 %float_0 %float_1
       %main = OpFunction %void None %3
          %5 = OpLabel
         %18 = OpLoad %v4float %in_pos
         %20 = OpAccessChain %_ptr_Output_v4float %_ %int_0
               OpStore %20 %18
         %27 = OpAccessChain %_ptr_Output_v4float %__0 %int_0
               OpStore %27 %26
               OpReturn
               OpFunctionEnd
END

SHADER fragment frag_shader GLSL
#version 450
// Ignoring input color.
layout(location=0) out vec4 out_color;

void main()
{
    out_color = vec4(0.0, 1.0, 0.0, 1.0);
}
END

BUFFER framebuffer_img FORMAT R8G8B8A8_UNORM

PIPELINE graphics graphics_pipeline
  ATTACH vtx_shader
  ATTACH frag_shader
  BIND BUFFER framebuffer_img AS color LOCATION 0
END

RUN graphics_pipeline DRAW_RECT POS 0 0 SIZE 250 250
EXPECT framebuffer_img IDX 0 0 SIZE 250 250 EQ_RGBA 0 255 0 255