Alphablending, color logic op, alphatest, multitexturing, and more stability #14
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…turing. * add GPU_FinishDrawing() to be called after a batch of GPU_DrawArray() calls if you're done drawing or if you intend to change the GPU configuration before drawing more. Also fix GPU_Finalize(). With those changes, the GPU no longer freezes if you call GPU_DrawArray() an even number of times. * fix GPU_SetViewport() to allow color buffer reading, so blending and logicop work as expected.
smealum
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Alphablending, color logic op, alphatest, multitexturing, and more stability
encounter
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Aug 17, 2015
Alphablending, color logic op, alphatest, multitexturing, and more stability
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Notes:
GPU_FinishDrawing() is to be called after a batch of GPU_DrawArray() or GPU_DrawElements() calls if a) you're done drawing or b) you intend to change the GPU configuration before drawing more.
GPU no longer freezes if GPU_DrawArray/Elements is called an even number of times.
GPU_SetTextureEnable() takes a bitmask specifying which textures to enable. GPU_SetTextureEnable(GPU_TEXUNIT0|GPU_TEXUNIT1|GPU_TEXUNIT2); would enable all three texture units for example.
In consequence, GPU_SetTexture() takes an extra parameter (GPU_TEXUNIT0/1/2) specifying which texture unit to setup.