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Add "combine" color mode, for colorizing images (see https://love2d.org/forums/viewtopic.php?f=4&t=7648 )

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Bill Meltsner
2012-01-26 15:00:40 -05:00
parent a0be14869f
commit 8f781e9f13
3 changed files with 10 additions and 1 deletions
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src/modules/graphics/opengl/Graphics.cpp
+8 -1
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@@ -530,6 +530,11 @@ namespace opengl
{
if (mode == COLOR_MODULATE)
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
else if (mode == COLOR_COMBINE) {
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_ADD_SIGNED);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
}
else // mode = COLOR_REPLACE
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}
@@ -567,7 +572,9 @@ namespace opengl
if (mode == GL_MODULATE)
return COLOR_MODULATE;
else // // mode == GL_REPLACE
else if (mode == GL_COMBINE)
return COLOR_COMBINE;
else // mode == GL_REPLACE
return COLOR_REPLACE;
}