From c0298348089069716cfc1aee2b25d0857c8be450 Mon Sep 17 00:00:00 2001 From: Kristian Høgsberg Date: Wed, 4 Jul 2012 22:56:09 -0400 Subject: __DRIimage: version 5, add new formats and createSubImage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- include/GL/internal/dri_interface.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/GL') diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h index 29c9a116136..82e5fde7f03 100644 --- a/include/GL/internal/dri_interface.h +++ b/include/GL/internal/dri_interface.h @@ -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); }; -- cgit v1.2.3