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// [config]
// expect_result: pass
// glsl_version: 1.10
//
// [end config]
/*
* GStreamer
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#extension GL_ARB_texture_rectangle : enable
uniform sampler2DRect base;
uniform sampler2DRect blend;
uniform sampler2DRect alpha;
uniform float final_width, final_height;
uniform float base_width, base_height;
/*
uniform float blend_width, blend_height;
uniform float alpha_width, alpha_height;
*/
void main () {
vec2 base_scale = vec2 (base_width, base_height) / vec2 (final_width, final_height);
/*
vec2 blend_scale = vec2 (blend_width, blend_height) / vec2 (final_width, final_height);
vec2 alpha_scale = vec2 (alpha_width, alpha_height) / vec2 (final_width, final_height);
*/
vec4 basecolor = texture2DRect (base, gl_TexCoord[0].st * base_scale);
vec4 blendcolor = texture2DRect (blend, gl_TexCoord[0].st);
vec4 alphacolor = texture2DRect (alpha, gl_TexCoord[0].st);
gl_FragColor = (alphacolor * blendcolor) + (1.0 - alphacolor) * basecolor;
}
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