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/**
* @file terrainF.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2007, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifdef DEFINE_GL_FRAGCOLOR
out vec4 gl_FragColor;
#endif
uniform sampler2D detail0;
uniform sampler2D detail1;
uniform sampler2D alphaRamp;
VARYING vec2 vary_texcoord0;
VARYING vec2 vary_texcoord1;
VARYING vec2 vary_texcoord2;
VARYING vec2 vary_texcoord3;
void main()
{
float a = texture2D(alphaRamp, vary_texcoord1.xy).a;
vec3 color = mix(texture2D(detail1, vary_texcoord2.xy).rgb,
texture2D(detail0, vary_texcoord0.xy).rgb,
a);
gl_FragColor.rgb = color;
gl_FragColor.a = texture2D(alphaRamp, vary_texcoord3.xy).a;
}
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