Hi I need to know wich is the minimum size (in pixels) for a compressed texture mipmap level. Is it 1 or is it depending on the typ of compression (for example 2x2 if s3tc compression used) ?
for example starting of a texture let's say 63x45 wich are the sizes of all successive mipmap levels?
compressed texture size
Hi I need to know wich is the minimum size (in pixels) for a compressed texture mipmap level. Is it 1 or is it depending on the typ of compression (for example 2x2 if s3tc compression used) ?
Mipmaps always go all the way down to 1x1 by default.
for example starting of a texture let's say 63x45 wich are the sizes of all successive mipmap levels?
Divide by two and round down to get the next mipmap size.
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So it works the same also for compressed textures? I was supposing some different behaviour since compressed textures are different from normal textures XD but if you are correct their mipmaps act the same. Thank you.
The answer to this is in the documentation for GL_ARB_texture_non_power_of_two: http://www.opengl.org/registry/specs/ARB/texture_non_power_of_two.txt
There is no specified interaction between texture compression and non-power-of-two textures; issues 9 and 10 give further info that is relevant to your question.
There is no specified interaction between texture compression and non-power-of-two textures; issues 9 and 10 give further info that is relevant to your question.
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