I am making a 2D game with OpenGL. I would like to speed up texture drawing with VBOs.
I am currently using immediate mode. I create my own coordinates when I rotate and scale the texture. I also have the functionality of rounding corners of a texture, using a polygon primitive to draw them.
I thought it would be faster to do VBO with vertices for the sides of the texture without offset, so I can use glTranslate, glScale and glRotate to move the paint position for my texture. Then I can use the same VBO without changes to paint the texture every time. I could only change VBO when I need to add coordinates for rounded corners.
Is this the best way to do this? What things should I watch with when I do this? Is it really fast to use GL_TRIANGLES instead of GL_QUADS in modern graphics cards?
Thanks for any answer.
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