glamor: Add stub Composite support.

glamor/Makefile.am

@@ -19,5 +19,6 @@ libglamor_la_SOURCES = \
 	glamor_fill.c \
 	glamor_fillspans.c \
 	glamor_getspans.c \
+	glamor_render.c \
 	glamor_tile.c \
 	glamor.h

glamor/glamor.c

@@ -147,6 +147,9 @@ Bool
 glamor_init(ScreenPtr screen)
 {
     glamor_screen_private *glamor_priv;
+#ifdef RENDER
+    PictureScreenPtr ps = GetPictureScreenIfSet(screen);
+#endif
 
     glamor_priv = xcalloc(1, sizeof(*glamor_priv));
     if (glamor_priv == NULL)
@@ -193,6 +196,11 @@ glamor_init(ScreenPtr screen)
     glamor_priv->saved_get_spans = screen->GetSpans;
     screen->GetSpans = glamor_get_spans;
 
+#ifdef RENDER
+    glamor_priv->saved_composite = ps->Composite;
+    ps->Composite = glamor_composite;
+#endif
+
     glamor_init_solid_shader(screen);
     glamor_init_tile_shader(screen);
 
@@ -208,9 +216,15 @@ void
 glamor_fini(ScreenPtr screen)
 {
     glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
+#ifdef RENDER
+    PictureScreenPtr	ps = GetPictureScreenIfSet(screen);
+#endif
 
     screen->CreateGC = glamor_priv->saved_create_gc;
     screen->CreatePixmap = glamor_priv->saved_create_pixmap;
     screen->DestroyPixmap = glamor_priv->saved_destroy_pixmap;
     screen->GetSpans = glamor_priv->saved_get_spans;
+#ifdef RENDER
+    ps->Composite = glamor_priv->saved_composite;
+#endif
 }

glamor/glamor_priv.h

@@ -43,6 +43,7 @@ typedef struct glamor_screen_private {
     CreatePixmapProcPtr saved_create_pixmap;
     DestroyPixmapProcPtr saved_destroy_pixmap;
     GetSpansProcPtr saved_get_spans;
+    CompositeProcPtr saved_composite;
 
     /* glamor_solid */
     GLint solid_prog;
@@ -135,6 +136,20 @@ glamor_get_spans(DrawablePtr drawable,
 		 int nspans,
 		 char *dst_start);
 
+/* glamor_render.c */
+void glamor_composite(CARD8 op,
+		      PicturePtr pSrc,
+		      PicturePtr pMask,
+		      PicturePtr pDst,
+		      INT16 xSrc,
+		      INT16 ySrc,
+		      INT16 xMask,
+		      INT16 yMask,
+		      INT16 xDst,
+		      INT16 yDst,
+		      CARD16 width,
+		      CARD16 height);
+
 /* glamor_tile.c */
 void glamor_tile(PixmapPtr pixmap, PixmapPtr tile,
 		 int x, int y, int width, int height,