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Generate mip-maps in GLES2 with glGenerateMipmap

Rafał Mikrut requested to merge github/fork/clayjohn/gen_mipsmaps into master

Created by: clayjohn

After an unsuccessful day trying to port the GLES3 custom mip-mapping over to GLES2 I opted for the simpler solution, just use the OpenGL built-in glGenerateMipmap to generate Mip-maps.

Pros:

  • Simpler code
  • Faster

Cons:

  • Uses a linear blur instead of gaussian

I think it is a good idea for GLES2 anyway as the expectation for GLES2 is to have lower quality rendering at the price of much faster render times.

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