48 lines
1.5 KiB
GLSL
48 lines
1.5 KiB
GLSL
// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2013 the SuperTuxKart team
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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// Creates a bubble (wave) effect by distorting the texture depending on time
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uniform mat4 ModelViewProjectionMatrix;
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uniform float time;
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out vec2 uv;
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out vec2 uv_anim;
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out vec2 uv_cl;
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out vec2 uv_fast;
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out vec3 vertex;
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void main()
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{
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uv = gl_MultiTexCoord0.st;
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gl_Position = ModelViewProjectionMatrix * gl_Vertex;
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float delta_x = cos(time*3.0) * sin( 4.0 * gl_TexCoord[0].st.s * 6.28318531 );
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float delta_y = cos(time*2.0) * sin( 3.0 * gl_TexCoord[0].st.t * 6.28318531 );
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vertex = gl_Vertex.xyz;
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uv_anim = uv + vec2(0.002*time, 0);
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uv_cl = uv + vec2(-0.001*time, 0);
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uv_fast = uv + vec2(0.005*time, 0);
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}
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