Скачать или смотреть Texture APIs in WebGL (clamp, repeating, etc) - ProgrammingTIL

In this episode, I discuss several texture APIs offered in WebGL.

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Concepts:
Texture APIs: texParameteri
gl.texParameteri, gl.getTexParameter, gl.generateMipmap
Mipmaps are used to create distance with objects.
A higher-resolution mipmap is used for objects that are closer, and a lower-resolution mipmap is used for objects that are farther away.
It starts with the resolution of the texture image and halves the resolution until a 1x1 dimension texture image is created.
For example, if you have a 64x64 texture, the next smaller mipmap is 16x16, then 4x4, then 1x1
We'll be looking at these in more detail in a later episode.
TEXTURE_MAG_FILTER
A texture filter constant to use when a surface is rendered larger than the corresponding texture bitmap (such as for close-up objects). Initial value is gl.LINEAR.
TEXTURE_MIN_FILTER
A texture filter constant to use when a surface is rendered smaller than the corresponding texture bitmap (such as for distant objects). Initial value is gl.NEAREST_MIPMAP_LINEAR.
TEXTURE_WRAP_S
TEXTURE_WRAP_T

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