libva: update DRI2 to support swapbuffer

va/x11/dri2_util.c

@@ -35,6 +35,8 @@ struct dri2_drawable
     int front_index;
 };
 
+static int gsDRI2SwapAvailable;
+
 static struct dri_drawable * 
 dri2CreateDrawable(VADriverContextP ctx, XID x_drawable)
 {
@@ -68,15 +70,21 @@ dri2SwapBuffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
     XserverRegion region;
 
     if (dri2_drawable->has_backbuffer) {
-        xrect.x = 0;
-        xrect.y = 0;
-        xrect.width = dri2_drawable->width;
-        xrect.height = dri2_drawable->height;
-
-        region = XFixesCreateRegion(ctx->x11_dpy, &xrect, 1);
-        VA_DRI2CopyRegion(ctx->x11_dpy, dri_drawable->x_drawable, region,
-                       DRI2BufferFrontLeft, DRI2BufferBackLeft);
-        XFixesDestroyRegion(ctx->x11_dpy, region);
+        if (gsDRI2SwapAvailable) {
+            CARD64 ret;
+            VA_DRI2SwapBuffers(ctx->x11_dpy, dri_drawable->x_drawable, 0, 0,
+                               0, &ret);
+        } else {
+            xrect.x = 0;
+            xrect.y = 0;
+            xrect.width = dri2_drawable->width;
+            xrect.height = dri2_drawable->height;
+
+            region = XFixesCreateRegion(ctx->x11_dpy, &xrect, 1);
+            VA_DRI2CopyRegion(ctx->x11_dpy, dri_drawable->x_drawable, region,
+                              DRI2BufferFrontLeft, DRI2BufferBackLeft);
+            XFixesDestroyRegion(ctx->x11_dpy, region);
+        }
     }
 }
 
@@ -91,7 +99,6 @@ dri2GetRenderingBuffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
     
     i = 0;
     attachments[i++] = __DRI_BUFFER_BACK_LEFT;
-    attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
     buffers = VA_DRI2GetBuffers(ctx->x11_dpy, dri_drawable->x_drawable,
 			     &dri2_drawable->width, &dri2_drawable->height, 
                              attachments, i, &count);
@@ -179,6 +186,7 @@ isDRI2Connected(VADriverContextP ctx, char **driver_name)
     dri_state->swapBuffer = dri2SwapBuffer;
     dri_state->getRenderingBuffer = dri2GetRenderingBuffer;
     dri_state->close = dri2Close;
+    gsDRI2SwapAvailable = (minor >= 2);
 
     return True;
 

va/x11/va_dri2.c

@@ -305,3 +305,45 @@ void VA_DRI2CopyRegion(Display *dpy, XID drawable, XserverRegion region,
     UnlockDisplay(dpy);
     SyncHandle();
 }
+
+static void
+load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
+              CARD64 remainder)
+{
+    req->target_msc_hi = target >> 32;
+    req->target_msc_lo = target & 0xffffffff;
+    req->divisor_hi = divisor >> 32;
+    req->divisor_lo = divisor & 0xffffffff;
+    req->remainder_hi = remainder >> 32;
+    req->remainder_lo = remainder & 0xffffffff;
+}
+
+static CARD64
+vals_to_card64(CARD32 lo, CARD32 hi)
+{
+    return (CARD64)hi << 32 | lo;
+}
+
+void VA_DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
+                        CARD64 divisor, CARD64 remainder, CARD64 *count)
+{
+    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+    xDRI2SwapBuffersReq *req;
+    xDRI2SwapBuffersReply rep;
+
+    XextSimpleCheckExtension (dpy, info, va_dri2ExtensionName);
+
+    LockDisplay(dpy);
+    GetReq(DRI2SwapBuffers, req);
+    req->reqType = info->codes->major_opcode;
+    req->dri2ReqType = X_DRI2SwapBuffers;
+    req->drawable = drawable;
+    load_swap_req(req, target_msc, divisor, remainder);
+
+    _XReply(dpy, (xReply *)&rep, 0, xFalse);
+
+    *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+}

va/x11/va_dri2.h

@@ -33,6 +33,7 @@
 #ifndef _VA_DRI2_H_
 #define _VA_DRI2_H_
 
+#include <X11/Xproto.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xfuncproto.h>
 #include <xf86drm.h>
@@ -63,9 +64,10 @@ VA_DRI2GetBuffers(Display *dpy, XID drawable,
 	       int *width, int *height,
 	       unsigned int *attachments, int count,
 	       int *outCount);
-#if 0
 extern void
 VA_DRI2CopyRegion(Display *dpy, XID drawable, XserverRegion region,
-	       CARD32 dest, CARD32 src);
-#endif
+                  CARD32 dest, CARD32 src);
+extern void
+VA_DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
+                   CARD64 remainder, CARD64 *count);
 #endif

va/x11/va_dri2str.h

@@ -35,11 +35,11 @@
 
 #define DRI2_NAME			"DRI2"
 #define DRI2_MAJOR			1
-#define DRI2_MINOR			0
+#define DRI2_MINOR			2
 
 #define DRI2NumberErrors		0
-#define DRI2NumberEvents		0
-#define DRI2NumberRequests		7
+#define DRI2NumberEvents		2
+#define DRI2NumberRequests		13
 
 #define X_DRI2QueryVersion		0
 #define X_DRI2Connect			1
@@ -48,6 +48,12 @@
 #define X_DRI2DestroyDrawable		4
 #define X_DRI2GetBuffers		5
 #define X_DRI2CopyRegion		6
+#define X_DRI2GetBuffersWithFormat	7
+#define X_DRI2SwapBuffers		8
+#define X_DRI2GetMSC			9
+#define X_DRI2WaitMSC			10
+#define X_DRI2WaitSBC			11
+#define X_DRI2SwapInterval		12
 
 typedef struct {
     CARD32  attachment B32;
@@ -190,4 +196,32 @@ typedef struct {
 } xDRI2CopyRegionReply;
 #define sz_xDRI2CopyRegionReply	32
 
+typedef struct {
+    CARD8   reqType;
+    CARD8   dri2ReqType;
+    CARD16  length B16;
+    CARD32  drawable B32;
+    CARD32  target_msc_hi B32;
+    CARD32  target_msc_lo B32;
+    CARD32  divisor_hi B32;
+    CARD32  divisor_lo B32;
+    CARD32  remainder_hi B32;
+    CARD32  remainder_lo B32;
+} xDRI2SwapBuffersReq;
+#define sz_xDRI2SwapBuffersReq  32
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  swap_hi B32;
+    CARD32  swap_lo B32;
+    CARD32  pad2 B32;
+    CARD32  pad3 B32;
+    CARD32  pad4 B32;
+    CARD32  pad5 B32;
+} xDRI2SwapBuffersReply;
+#define sz_xDRI2SwapBuffersReply 32
+
 #endif