Add picture structure describing the DRI image. i.e. whether the DRI
image represents the whole picture or an interleaved (top/bottom field)
version.
This extension makes it possible to maintain stride and size calculations
internal to Mesa, while allowing for texturing interlaced contents. Some
implementations can have an explicit means to handle this case, or could
emulate it with 2*stride + extra bo offset to the selected field.
---
include/GL/internal/dri_interface.h | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/include/GL/internal/dri_interface.h
b/include/GL/internal/dri_interface.h
index a65ccc8..ea1328a 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -911,6 +911,11 @@ struct __DRIdri2ExtensionRec {
#define __DRI_IMAGE_FORMAT_L8 0x1007
#define __DRI_IMAGE_FORMAT_LA88 0x1008 /* luminance + alpha */
+/* Image structure: full picture or interlaced (top/bottom field) pictures */
+#define __DRI_IMAGE_STRUCTURE_FRAME 0x0000
+#define __DRI_IMAGE_STRUCTURE_TOP_FIELD 0x0001
+#define __DRI_IMAGE_STRUCTURE_BOTTOM_FIELD 0x0002
+
#define __DRI_IMAGE_USE_SHARE 0x0001
#define __DRI_IMAGE_USE_SCANOUT 0x0002
#define __DRI_IMAGE_USE_CURSOR 0x0004
@@ -923,6 +928,7 @@ struct __DRIdri2ExtensionRec {
#define __DRI_IMAGE_ATTRIB_HANDLE 0x2001
#define __DRI_IMAGE_ATTRIB_NAME 0x2002
#define __DRI_IMAGE_ATTRIB_FORMAT 0x2003 /* available in versions 3+ */
+#define __DRI_IMAGE_ATTRIB_STRUCTURE 0x2004 /* available in versions 4+ */
typedef struct __DRIimageRec __DRIimage;
typedef struct __DRIimageAttrsRec __DRIimageAttrs;
@@ -933,6 +939,7 @@ struct __DRIimageAttrsRec {
unsigned int width;
unsigned int height;
unsigned int pitch;
+ unsigned int structure;
};
struct __DRIimageExtensionRec {
--
1.7.5.4
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