/** * @file treeShadowF.glsl * * $LicenseInfo:firstyear=2005&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2005, 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 * $/LicenseInfo$ */ /*[EXTRA_CODE_HERE]*/ #ifdef DEFINE_GL_FRAGCOLOR out vec4 frag_color; #else #define frag_color gl_FragColor #endif uniform float minimum_alpha; uniform sampler2D diffuseMap; VARYING vec4 pos; VARYING vec2 vary_texcoord0; vec4 computeMoments(float d, float a); void main() { float alpha = texture2D(diffuseMap, vary_texcoord0.xy).a; if (alpha < minimum_alpha) { discard; } frag_color = computeMoments(length(pos), 1.0); #if !DEPTH_CLAMP gl_FragDepth = max(pos.z/pos.w*0.5+0.5, 0.0); #endif }