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Ortho Switching Expensive??


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#1 Icarus3   Members   -  Reputation: 122

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Posted 15 August 2001 - 07:47 AM

I want to put some text in my screen It is said that switching to ortho for that is really good But is switchning from your normal 3d view to Ortho view and back every frame expensive???

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#2 NickW   Members   -  Reputation: 307

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Posted 15 August 2001 - 07:58 AM

No, not actually

all that the glOrtho does is modify the projection matrix, which means it''s only replacing the 16 floats or doubles. You can even save your perspective/ortho matrix in a buffer and load it back when you want to switch.




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