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Fix multiplicative blend mode.

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This commit is contained in:
vrld
2012-10-12 13:52:16 +02:00
parent 48f5afcc0e
commit e6711b2837
1 changed files with 2 additions and 2 deletions
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src/modules/graphics/opengl/Graphics.cpp
+2 -2
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@@ -546,7 +546,7 @@ void Graphics::setBlendMode(Graphics::BlendMode mode)
if (mode == BLEND_ALPHA)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
else if (mode == BLEND_MULTIPLICATIVE)
glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_DST_COLOR, GL_ZERO);
else if (mode == BLEND_PREMULTIPLIED)
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
else // mode == BLEND_ADDITIVE || mode == BLEND_SUBTRACTIVE
@@ -585,7 +585,7 @@ Graphics::BlendMode Graphics::getBlendMode()
return BLEND_ADDITIVE;
else if (src == GL_SRC_ALPHA && dst == GL_ONE_MINUS_SRC_ALPHA) // && equation == GL_FUNC_ADD
return BLEND_ALPHA;
else if (src == GL_DST_COLOR && dst == GL_ONE_MINUS_SRC_ALPHA) // && equation == GL_FUNC_ADD
else if (src == GL_DST_COLOR && dst == GL_ZERO) // && equation == GL_FUNC_ADD
return BLEND_MULTIPLICATIVE;
else if (src == GL_ONE && dst == GL_ONE_MINUS_SRC_ALPHA) // && equation == GL_FUNC_ADD
return BLEND_PREMULTIPLIED;