org.lwjgl.opengles

Class IMGFramebufferDownsample

java.lang.Object

org.lwjgl.opengles.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 Summary

Fields

Modifier and Type	Field and Description
static int	GL_DOWNSAMPLE_SCALES_IMG Accepted by the target parameter of GetIntegerv, GetInteger64v, GetIntegeri_v, GetInteger64i_v and GetInternalFormativ.
static int	GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SCALE_IMG Accepted by the pname parameter of GetFramebufferAttachmentParameteriv.
static int	GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_AND_DOWNSAMPLE_IMG Returned by CheckFramebufferStatus.
static int	GL_NUM_DOWNSAMPLE_SCALES_IMG Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, GetInteger64v, and GetInternalFormativ.

Method Summary

Modifier and Type	Method and Description
static void	glFramebufferTexture2DDownsampleIMG(int target, int attachment, int textarget, int texture, int level, int xscale, int yscale)
static void	glFramebufferTextureLayerDownsampleIMG(int target, int attachment, int texture, int level, int layer, int xscale, int yscale)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

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)