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The issue was the drawing order. If I draw the money and then the ship it respect the alpha.


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So the short answer to my own question is, "Yes." The long answer is... Using Metal—and, I assume, OpenGL ES—you can create no-copy data buffers from memory-mapped files on disk. From there, you can create textures from those buffers. There are constraints, however, in that the texture data must be an uncompressed pixel format, can only have one mipmap ...


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It's slow because you're sending a drawcall for every polygon. And each drawcall means communication with the drivers and the GPU, which is slow (I don't know exactly how it is the OpenGL ES. But on Desktops your target is to minimize the amount of drawcalls). And that is, where vbo's come in. A Vbo stores all the vertices of an object in a buffer. If you ...



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