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OpenGL texture questions
Author
1- If I want to change a texture on the fly, can I do it to an already loaded openGL texture, or do I need to change my texture and reload it?
2-What would the tex coords be if I wanted to have one texture, or a bunch of tiles.
as long as you keep the image data in an array, you can change it to hearts content, you''ll have to re-generate it though (im pretty sure)
Author
hum, all the examples I have have you create an array, fill the image data in, Gen a text Id,load into opengl texture, delete your array. If I edit my array, i need to reload it for it to update on my screen.
you can upload parts of a texture with glTexSubImage(1/2)d, just look it up in the docs.
if you want to have your mipmaps automatically updated too (which is what you want if you use mip mapping) also have a look at GL_SGIS_generate_mipmap
if you want to have your mipmaps automatically updated too (which is what you want if you use mip mapping) also have a look at GL_SGIS_generate_mipmap
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