Add swap interval and synchronization support

Based on SGI_video_sync, SGI_swap_control and OML_sync_control, add swap
interval and synchronization support to DRI2.  Useful for throttling rendering
and basic performance metrics.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 66 insertions, 1 deletions

diff --git a/dri2proto.h b/dri2proto.h
index 37873c4..cee8a3c 100644
--- a/dri2proto.h
+++ b/dri2proto.h
@@ -50,6 +50,9 @@
 #define X_DRI2CopyRegion		6
 #define X_DRI2GetBuffersWithFormat	7
 #define X_DRI2SwapBuffers		8
+#define X_DRI2GetMSC			9
+#define X_DRI2WaitMSC			10
+#define X_DRI2WaitSBC			11
 
 typedef struct {
     CARD32  attachment B32;
@@ -197,7 +200,69 @@ typedef struct {
     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   8
+#define sz_xDRI2SwapBuffersReq  32
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD16  length B32;
+    CARD32  swap_hi B32;
+    CARD32  swap_lo B32;
+} xDRI2SwapBuffersReply;
+#define sz_xDRI2SwapBuffersReply 16
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   dri2ReqType;
+    CARD16  length B16;
+    CARD32  drawable B32;
+} xDRI2GetMSCReq;
+#define sz_xDRI2GetMSCReq 8
+
+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;
+} xDRI2WaitMSCReq;
+#define sz_xDRI2WaitMSCReq 32
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   dri2ReqType;
+    CARD16  length B16;
+    CARD32  drawable B32;
+    CARD32  target_sbc_hi B32;
+    CARD32  target_sbc_lo B32;
+} xDRI2WaitSBCReq;
+#define sz_xDRI2WaitSBCReq 16
+
+typedef struct {
+    CARD8   type;
+    CARD8   pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  ust_hi B32;
+    CARD32  ust_lo B32;
+    CARD32  msc_hi B32;
+    CARD32  msc_lo B32;
+    CARD32  sbc_hi B32;
+    CARD32  sbc_lo B32;
+} xDRI2MSCReply;
+#define sz_xDRI2MSCReply 32
 
 #endif