58 lines
1.7 KiB
GLSL
58 lines
1.7 KiB
GLSL
/**
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* @file shadowAlphaMaskV.glsl
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*
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* $LicenseInfo:firstyear=2011&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2011, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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uniform mat4 texture_matrix0;
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uniform mat4 modelview_projection_matrix;
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uniform float shadow_target_width;
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ATTRIBUTE vec3 position;
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ATTRIBUTE vec4 diffuse_color;
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ATTRIBUTE vec2 texcoord0;
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VARYING float pos_zd2;
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VARYING float pos_w;
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VARYING float target_pos_x;
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VARYING vec4 vertex_color;
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VARYING vec2 vary_texcoord0;
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void passTextureIndex();
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void main()
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{
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//transform vertex
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vec4 pre_pos = vec4(position.xyz, 1.0);
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vec4 pos = modelview_projection_matrix * pre_pos;
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target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
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pos_w = pos.w;
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pos_zd2 = pos.z * 0.5;
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gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
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passTextureIndex();
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vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
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vertex_color = diffuse_color;
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}
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