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Comment: Re:Why? (Score 1) 113

by foijord (#42887847) Attached to: Intel Supports OpenGL ES 3.0 On Linux Before Windows
Here's a trick you can do to draw all your 2-triangle-quads in one draw call; pass 4 identical vertices for each quad, and 4 other attributes representing each corner of the quad. (-1, -1), (1, -1), etc. Then displace the vertex according to the corner attribute in the vertex shader. There's more data to pass, but I assume you're not passing the data every frame. If that's the case, don't. If you're moving the quads, just pass the position.

Comment: Re:Why? (Score 1) 113

by foijord (#42887625) Attached to: Intel Supports OpenGL ES 3.0 On Linux Before Windows

He explained it in the comment: "there's less vertex data to generate and pass to the GPU"

This is false. If you're drawing a quad, you pass 4 vertices. If you draw 2 triangles forming a quad, you also pass 4 vertices (using a triangle strip and index buffer). The index buffer is not updated every frame, just once.

Comment: Re:Very very poor article (Score 1) 113

by foijord (#42887557) Attached to: Intel Supports OpenGL ES 3.0 On Linux Before Windows

On Windows, the GPU is driven by either DirectX or OpenGL. Native OpenGL ES drivers for Windows are ONLY needed for cross-platform development where applications destined for mobile devices are built and tested on Windows first.

That's a really good reason to have native OpenGL ES drivers IMHO. But why would you create an app on windows, and release it on any platform except windows?

Comment: Re:Who cares? (Score 1) 113

by foijord (#42887501) Attached to: Intel Supports OpenGL ES 3.0 On Linux Before Windows
There will be a windows driver soon, I assume. I also assume NVIDIA and AMD will provide drivers for windows. Asking what specifically you would use OpenGL ES 3.0 on windows for is like asking specifically what you would use OpenGL on windows for. It's for portable 3D graphics. OpenGL ES 3.0 looks like it will be the most portable version yet.

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