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Fixed love.graphics.getBlendMode on systems which don't support the subtractive blend mode

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Alex Szpakowski
2013-02-17 00:19:46 -04:00
parent a68bdfe7a2
commit 8c21c4dce0
1 changed files with 6 additions and 2 deletions
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src/modules/graphics/opengl/Graphics.cpp
+6 -2
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@@ -551,10 +551,14 @@ void Graphics::setColorMode(Graphics::ColorMode mode)
Graphics::BlendMode Graphics::getBlendMode() const Graphics::BlendMode Graphics::getBlendMode() const
{ {
GLint dst, src, equation; GLint dst, src;
glGetIntegerv(GL_BLEND_DST, &dst); glGetIntegerv(GL_BLEND_DST, &dst);
glGetIntegerv(GL_BLEND_SRC, &src); glGetIntegerv(GL_BLEND_SRC, &src);
glGetIntegerv(GL_BLEND_EQUATION, &equation);
GLint equation = GL_FUNC_ADD;
if (GLEE_VERSION_1_4 || GLEE_ARB_imaging || (GLEE_EXT_blend_minmax && GLEE_EXT_blend_subtract))
glGetIntegerv(GL_BLEND_EQUATION, &equation);
if (equation == GL_FUNC_REVERSE_SUBTRACT) // && src == GL_SRC_ALPHA && dst == GL_ONE if (equation == GL_FUNC_REVERSE_SUBTRACT) // && src == GL_SRC_ALPHA && dst == GL_ONE
return BLEND_SUBTRACTIVE; return BLEND_SUBTRACTIVE;