Class IMGFramebufferDownsample


  • public class IMGFramebufferDownsample
    extends java.lang.Object
    Native bindings to the IMG_framebuffer_downsample extension.

    This extension introduces the ability to attach color buffers to a framebuffer that are at a lower resolution than the framebuffer itself, with the GPU automatically downsampling the color attachment to fit.

    This can be useful for various post-process rendering techniques where it is desirable to generate downsampled images in an efficient manner, or for a lower resolution post-process technique.

    This extension exposes at least a 2 x 2 downscale. Other downsampling modes may be exposed on the system and this can be queried.

    • Field Detail

      • GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_AND_DOWNSAMPLE_IMG

        public static final int GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_AND_DOWNSAMPLE_IMG
        Returned by CheckFramebufferStatus.
        See Also:
        Constant Field Values
      • GL_NUM_DOWNSAMPLE_SCALES_IMG

        public static final int GL_NUM_DOWNSAMPLE_SCALES_IMG
        Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, GetInteger64v, and GetInternalFormativ.
        See Also:
        Constant Field Values
      • GL_DOWNSAMPLE_SCALES_IMG

        public static final int GL_DOWNSAMPLE_SCALES_IMG
        Accepted by the target parameter of GetIntegerv, GetInteger64v, GetIntegeri_v, GetInteger64i_v and GetInternalFormativ.
        See Also:
        Constant Field Values
      • GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SCALE_IMG

        public static final int GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SCALE_IMG
        Accepted by the pname parameter of GetFramebufferAttachmentParameteriv.
        See Also:
        Constant Field Values
    • Method Detail

      • glFramebufferTexture2DDownsampleIMG

        public static void glFramebufferTexture2DDownsampleIMG​(int target,
                                                               int attachment,
                                                               int textarget,
                                                               int texture,
                                                               int level,
                                                               int xscale,
                                                               int yscale)
      • glFramebufferTextureLayerDownsampleIMG

        public static void glFramebufferTextureLayerDownsampleIMG​(int target,
                                                                  int attachment,
                                                                  int texture,
                                                                  int level,
                                                                  int layer,
                                                                  int xscale,
                                                                  int yscale)