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__DRIimage: version 5, add new formats and createSubImage 

The additions in version 5 enables creating EGLImages for different planes
of a YUV buffer.  createImageFromName is still used to create the containing
__DRIimage, and createSubImage can then be used no that __DRIimage to create
__DRIimages that correspond to the y, u, and v planes (__DRI_IMAGE_FORMAT_R8)
or the uv planes (__DRI_IMAGE_FORMAT_RG88) for formats such as NV12 where
the u and v components are interleaved.  Packed formats such as YUYV etc
doesn't require any special treatment, we just sample those as a regular
ARGB texture.

Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
This commit is contained in:
Kristian Høgsberg 2012-07-04 22:56:09 -04:00
parent c0f7fe7b79
commit c029834808
1 changed files with 27 additions and 0 deletions
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27
include/GL/internal/dri_interface.h
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@ -919,12 +919,19 @@ struct __DRIdri2ExtensionRec {
* tokens, except in the native endian of the CPU. For example, on
* little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
* MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
*
* __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
* by the driver (YUV planar formats) but serve as a base image for
* creating sub-images for the different planes within the image.
*/
#define __DRI_IMAGE_FORMAT_RGB565 0x1001
#define __DRI_IMAGE_FORMAT_XRGB8888 0x1002
#define __DRI_IMAGE_FORMAT_ARGB8888 0x1003
#define __DRI_IMAGE_FORMAT_ABGR8888 0x1004
#define __DRI_IMAGE_FORMAT_XBGR8888 0x1005
#define __DRI_IMAGE_FORMAT_R8 0x1006 /* Since version 5 */
#define __DRI_IMAGE_FORMAT_GR88 0x1007
#define __DRI_IMAGE_FORMAT_NONE 0x1008
#define __DRI_IMAGE_USE_SHARE 0x0001
#define __DRI_IMAGE_USE_SCANOUT 0x0002
@ -981,6 +988,26 @@ struct __DRIimageExtensionRec {
* \since 4
*/
int (*write)(__DRIimage *image, const void *buf, size_t count);
/**
* Create an image out of a sub-region of a parent image. This
* entry point lets us create individual __DRIimages for different
* planes in a planar buffer (typically yuv), for example. While a
* sub-image shares the underlying buffer object with the parent
* image and other sibling sub-images, the life times of parent and
* sub-images are not dependent. Destroying the parent or a
* sub-image doesn't affect other images. The underlying buffer
* object is free when no __DRIimage remains that references it.
*
* Sub-images may overlap, but rendering to overlapping sub-images
* is undefined.
*
* \since 5
*/
__DRIimage *(*createSubImage)(__DRIimage *image,
int width, int height, int format,
int offset, int pitch,
void *loaderPrivate);
};