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/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengl;

/**
 * Native bindings to the EXT_framebuffer_multisample_blit_scaled extension.
 * 
 * This extension relaxes some of the restrictions associated with multisample resolve operations, specifically to allow a combined resolve and scale
 * operation through a single call to BlitFramebuffer. It also adds two new filter types to control the quality of the combined scaled resolve operation.
 * 
 * In traditional multisampled framebuffer rendering, color samples must be explicitly resolved via BlitFramebuffer before any other operation on the
 * resulting pixel values can be performed. This multisample resolve operation must be done using a BlitFramebuffer call where the dimensions of the source
 * and destination rectangles are identical. If the resulting pixel values need to be copied to a texture with different dimensions, these resolved values
 * can then be scaled with a second call to BlitFramebuffer.
 * 
 * By requiring two separate calls to BlitFramebuffer, the quality of final image can be maintained to a certain degree. The samples are first resolved,
 * and then these resolved values can be filtered to produce the final image. This image quality comes at the price of increased memory usage and lower
 * performance. However, the scaling blit can still introduce artifacts, particularly if it is done with a simple bilinear filter.
 * 
 * The new filter types introduced by this extension allow the scaled resolve to be done with a single call to BlitFramebuffer. Not all samples from the
 * read framebuffer are required to be be used when producing the final pixel values, and there may be a loss in quality when compared to an image produced
 * by a separate resolve and scale. However, the single-pass scaled resolve blit should be faster than the traditional two-pass resolve then scale blits.
 * 
 * Requires {@link ARBFramebufferObject ARB_framebuffer_object}.
 */
public final class EXTFramebufferMultisampleBlitScaled {

    /** Accepted by the {@code filter} parameter of BlitFramebuffer. */
    public static final int
        GL_SCALED_RESOLVE_FASTEST_EXT = 0x90BA,
        GL_SCALED_RESOLVE_NICEST_EXT  = 0x90BB;

    private EXTFramebufferMultisampleBlitScaled() {}

}