AJ Kelly
70 lines
2.2 KiB
GLSL
70 lines
2.2 KiB
GLSL
uniform sampler2D Texture1;
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uniform sampler2D Texture2;
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vec4 ApplyVividLight( vec4 over, vec4 under, float fill )
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{
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vec3 NeutralColor = vec3(.5,.5,.5);
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over.rgb = mix( NeutralColor, over.rgb, fill );
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over.rgb -= 0.5;
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over.rgb *= 2.0;
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vec4 ret;
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ret.rgb = under.rgb;
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ret.rgb += min(over.rgb, 0.0);
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ret.rgb /= max(1.0-abs(over.rgb), 0.000001);
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ret.rgb *= under.a;
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ret = clamp( ret, 0.0, 1.0 );
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ret.rgb *= over.a;
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ret.a = over.a * under.a;
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return ret;
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}
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void main(void)
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{
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vec4 under = texture2DProj( Texture1, gl_TexCoord[0] );
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vec4 over = texture2DProj( Texture2, gl_TexCoord[0] );
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vec4 ret = ApplyVividLight( over, under, gl_Color.a );
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ret.rgb += (1.0 - over.a) * under.rgb * under.a;
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ret.a += (1.0 - over.a) * under.a;
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over.a *= gl_Color.a;
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ret.rgb += (1.0 - under.a) * over.rgb * over.a;
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ret.a += (1.0 - under.a) * over.a;
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ret.rgb /= ret.a;
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gl_FragColor = ret;
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return;
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}
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/*
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* Copyright (c) 2007 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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