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add mixing shaders

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This commit is contained in:
Glenn Maynard
2007-02-19 23:40:46 +00:00
parent ebf4bc5c0e
commit f8c5b663c4
5 changed files with 303 additions and 0 deletions
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stepmania/Data/Shaders/GLSL/Color burn.frag
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uniform sampler2D Texture1;
uniform sampler2D Texture2;
vec4 ApplyBurn( vec4 over, vec4 under, float fill )
{
vec3 NeutralColor = vec3(1,1,1);
over.rgb = mix( NeutralColor, over.rgb, fill );
vec4 ret;
ret.rgb = (over.rgb + under.rgb - 1);
ret.rgb /= max(over.rgb, 0.000001);
ret.rgb *= over.a*under.a;
ret = clamp( ret, 0.0, 1.0 );
ret.a = over.a * under.a;
return ret;
}
void main(void)
{
vec4 under = texture2DProj( Texture1, gl_TexCoord[0] );
vec4 over = texture2DProj( Texture2, gl_TexCoord[0] );
vec4 ret = ApplyBurn( over, under, gl_Color.a );
ret.rgb += (1.0 - over.a) * under.rgb * under.a;
ret.a += (1.0 - over.a) * under.a;
over.a *= gl_Color.a;
ret.rgb += (1.0 - under.a) * over.rgb * over.a;
ret.a += (1.0 - under.a) * over.a;
ret.rgb /= ret.a;
gl_FragColor = ret;
return;
}
/*
* Copyright (c) 2007 Glenn Maynard
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons to
* whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
stepmania/Data/Shaders/GLSL/Color dodge.frag
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uniform sampler2D Texture1;
uniform sampler2D Texture2;
vec4 ApplyDodge( vec4 over, vec4 under, float fill )
{
vec3 NeutralColor = vec3(0,0,0);
over.rgb = mix( NeutralColor, over.rgb, fill );
vec4 ret;
ret.rgb = under.rgb;
ret.rgb /= max(1-over.rgb, 0.000001);
ret.rgb = min(ret.rgb, 1);
ret.rgb *= over.a*under.a;
// ret = clamp( ret, 0.0, 1.0 );
ret.a = over.a * under.a;
return ret;
}
void main(void)
{
vec4 under = texture2DProj( Texture1, gl_TexCoord[0] );
vec4 over = texture2DProj( Texture2, gl_TexCoord[0] );
vec4 ret = ApplyDodge( over, under, gl_Color.a );
ret.rgb += (1.0 - over.a) * under.rgb * under.a;
ret.a += (1.0 - over.a) * under.a;
over.a *= gl_Color.a;
ret.rgb += (1.0 - under.a) * over.rgb * over.a;
ret.a += (1.0 - under.a) * over.a;
ret.rgb /= ret.a;
gl_FragColor = ret;
return;
}
/*
* Copyright (c) 2007 Glenn Maynard
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons to
* whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
stepmania/Data/Shaders/GLSL/Hard mix.frag
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uniform sampler2D Texture1;
uniform sampler2D Texture2;
vec4 ApplyVividLight( vec4 over, vec4 under, float fill )
{
vec3 NeutralColor = vec3(.5,.5,.5);
over.rgb = mix( NeutralColor, over.rgb, fill );
over.rgb -= 0.5;
over.rgb *= 2.0;
vec4 ret;
ret.rgb = under.rgb;
ret.rgb += min(over.rgb, 0);
ret.rgb /= max(1-abs(over.rgb), 0.000001);
ret.rgb *= under.a;
ret = clamp( ret, 0.0, 1.0 );
ret.rgb *= over.a;
ret.a = over.a * under.a;
return ret;
}
vec4 ApplyHardMix( vec4 over, vec4 under, float fill )
{
vec4 ret = ApplyVividLight( over, under, gl_Color.a );
/* ret is premultiplied. Undo this, so we have a
* 0..1 range for color. */
ret.rgb /= ret.a;
fill *= fill;
/* Posterize, with a threshold based on fill. This is a rough
* approximation. */
float low = 0.5-(1.0-fill)*0.5;
float high = 0.5+(1.0-fill)*0.5+0.00001;
ret.rgb = (ret.rgb - low) / (high - low);
ret = clamp( ret, 0.0, 1.0 );
/* Premultiply it, for the rest of the calculation. */
ret.rgb *= ret.a;
return ret;
}
void main(void)
{
vec4 under = texture2DProj( Texture1, gl_TexCoord[0] );
vec4 over = texture2DProj( Texture2, gl_TexCoord[0] );
vec4 ret = ApplyHardMix( over, under, gl_Color.a );
ret.rgb += (1.0 - over.a) * under.rgb * under.a;
ret.a += (1.0 - over.a) * under.a;
over.a *= gl_Color.a;
ret.rgb += (1.0 - under.a) * over.rgb * over.a;
ret.a += (1.0 - under.a) * over.a;
ret.rgb /= ret.a;
gl_FragColor = ret;
return;
}
/*
* Copyright (c) 2007 Glenn Maynard
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons to
* whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
stepmania/Data/Shaders/GLSL/Texture matrix scaling.vert
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attribute vec4 TextureMatrixScale;
void main(void)
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
vec4 multiplied_tex_coord = gl_TextureMatrix[0] * gl_MultiTexCoord0;
gl_TexCoord[0] = (multiplied_tex_coord * TextureMatrixScale) +
(gl_MultiTexCoord0 * (vec4(1)-TextureMatrixScale));
gl_FrontColor = gl_Color;
}
stepmania/Data/Shaders/GLSL/Vivid light.frag
+69
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uniform sampler2D Texture1;
uniform sampler2D Texture2;
vec4 ApplyVividLight( vec4 over, vec4 under, float fill )
{
vec3 NeutralColor = vec3(.5,.5,.5);
over.rgb = mix( NeutralColor, over.rgb, fill );
over.rgb -= 0.5;
over.rgb *= 2.0;
vec4 ret;
ret.rgb = under.rgb;
ret.rgb += min(over.rgb, 0);
ret.rgb /= max(1-abs(over.rgb), 0.000001);
ret.rgb *= under.a;
ret = clamp( ret, 0.0, 1.0 );
ret.rgb *= over.a;
ret.a = over.a * under.a;
return ret;
}
void main(void)
{
vec4 under = texture2DProj( Texture1, gl_TexCoord[0] );
vec4 over = texture2DProj( Texture2, gl_TexCoord[0] );
vec4 ret = ApplyVividLight( over, under, gl_Color.a );
ret.rgb += (1.0 - over.a) * under.rgb * under.a;
ret.a += (1.0 - over.a) * under.a;
over.a *= gl_Color.a;
ret.rgb += (1.0 - under.a) * over.rgb * over.a;
ret.a += (1.0 - under.a) * over.a;
ret.rgb /= ret.a;
gl_FragColor = ret;
return;
}
/*
* Copyright (c) 2007 Glenn Maynard
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons to
* whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/