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graphicsdriver/opengl: Fix comments
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@ -529,7 +529,7 @@ func (c *context) mapPixelBuffer(buffer buffer, t textureNative) uintptr {
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var ptr uintptr
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_ = c.t.Call(func() error {
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gl.BindBuffer(gl.PIXEL_UNPACK_BUFFER, uint32(buffer))
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// Even though only the part of the buffer is updated, that's fine.
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// Even though the buffer is partly updated, GL_WRITE_ONLY is fine.
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// https://stackoverflow.com/questions/30248594/write-only-glmapbuffer-what-if-i-dont-write-it-all
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ptr = gl.MapBuffer(gl.PIXEL_UNPACK_BUFFER, gl.WRITE_ONLY)
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return nil
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