Topic 3D mesh rendering
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In Response to Günther
> TODO: Why do we clear here when we set new pixel values for all pixels in that region anyway?
Because ClearBoxDw allocates the main memory buffer for the box, so that only that box needs to be sent to the gpu, and not the whole texture, or every pixel separately. It's an important optimization.
> TODO: This was GL_ADD. Is GL_MODULATE correct for inverted alpha? Others seem to break things... - ModulateClrA was changed to do a+b-1, but there is no GL_-constant for this...
No, but changing this to GL_MODULATE is one of the advantages that this patch gives us.
And yes, the shaders need the same. They can probably be simplified.
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