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Add blend mode 'none' (issue #536)

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Bart van Strien
2013-01-18 00:48:36 +01:00
parent 49961d66c7
commit 501beb7d02
3 changed files with 6 additions and 0 deletions
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src/modules/graphics/opengl/Graphics.cpp
+4
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@@ -549,6 +549,8 @@ void Graphics::setBlendMode(Graphics::BlendMode mode)
glBlendFunc(GL_DST_COLOR, GL_ZERO);
else if (mode == BLEND_PREMULTIPLIED)
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
else if (mode == BLEND_NONE)
glBlendFunc(GL_ONE, GL_ZERO);
else // mode == BLEND_ADDITIVE || mode == BLEND_SUBTRACTIVE
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
}
@@ -584,6 +586,8 @@ Graphics::BlendMode Graphics::getBlendMode()
return BLEND_MULTIPLICATIVE;
else if (src == GL_ONE && dst == GL_ONE_MINUS_SRC_ALPHA) // && equation == GL_FUNC_ADD
return BLEND_PREMULTIPLIED;
else if (src == GL_ONE && dst == GL_ZERO)
return BLEND_NONE;
return BLEND_MAX_ENUM; // Should never be reached.
}