8:30 – FP

• Started off the day with sprites. Here’s a starfield:
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• The neat thing about this is that the stars are handled as sprites, which means that it’s possible to handle text overlay with a shader now. I think that the way it could be done would be to create a single grid with all the characters and pass that to the vertex shader with the XY index and size of the letter. The vertex shader moves the texture so that the letter is centered and then passes off the texture and size to the fragment shader, which clips the output so only the particular letter is shown. Not going to do that yet, but it’s probably the first tool after I finish the book.
• Here’s a tutorial on how to make the text texture: http://nehe.gamedev.net/tutorial/2d_texture_font/18002/
• Worked my way through the pixBuffer/motion blur section, but I don’t think it’s worth incorporating into the framework.