// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkDepthPeelingPassFinalFS.h"

const char *vtkDepthPeelingPassFinalFS =
"//VTK::System::Dec\n"
"\n"
"// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen\n"
"// SPDX-License-Identifier: BSD-3-Clause\n"
"\n"
"in vec2 texCoord;\n"
"\n"
"uniform sampler2D translucentRGBATexture;\n"
"uniform sampler2D opaqueRGBATexture;\n"
"uniform sampler2D opaqueZTexture;\n"
"\n"
"// the output of this shader\n"
"//VTK::Output::Dec\n"
"\n"
"void main()\n"
"{\n"
"  vec4 t1Color = texture2D(translucentRGBATexture, texCoord);\n"
"  vec4 t2Color = texture2D(opaqueRGBATexture, texCoord);\n"
"  gl_FragData[0].a = t1Color.a +  (1.0-t1Color.a)*t2Color.a;\n"
"  gl_FragData[0].rgb = (t1Color.rgb*t1Color.a + t2Color.rgb*(1.0-t1Color.a));\n"
"\n"
"  float depth = texture2D(opaqueZTexture, texCoord).x;\n"
"  gl_FragDepth = depth;\n"
"}\n"
"";