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 <k...@bitplanet.net>
---
include/GL/internal/dri_interface.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/GL/internal/dri_interface.h
b/include/GL/internal/dri_interface.h
index e37917e..5dfe15b 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -907,6 +907,10 @@ struct __DRIdri2ExtensionRec {
#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_RG88 0x1007
+#define __DRI_IMAGE_FORMAT_YUV420 0x1008
+#define __DRI_IMAGE_FORMAT_NV12 0x1009
#define __DRI_IMAGE_USE_SHARE 0x0001
#define __DRI_IMAGE_USE_SCANOUT 0x0002
@@ -963,6 +967,18 @@ 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.
+ *
+ * \since 5
+ */
+ __DRIimage *(*createSubImage)(__DRIimage *image,
+ int width, int height, int format,
+ int offset, int pitch,
+ void *loaderPrivate);
};
--
1.7.10.2
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