From 0f633bc3d14f8fe7d1b87a19ee1c7c2bc883e03f Mon Sep 17 00:00:00 2001
From: Søren Sandmann Pedersen <ssp@redhat.com>
Date: Fri, 13 Jul 2012 02:22:04 -0400
Subject: More stubs

---
 src/qxl.h         | 16 ++++++++++-
 src/qxl_driver.c  | 81 +++++++++++++++++++++++++++++++++++++++++++++++--------
 src/qxl_surface.c | 23 ++++++++++++++++
 3 files changed, 108 insertions(+), 12 deletions(-)

diff --git a/src/qxl.h b/src/qxl.h
index 1d9ca75..90ac44e 100644
--- a/src/qxl.h
+++ b/src/qxl.h
@@ -392,7 +392,21 @@ Bool		    qxl_surface_put_image    (qxl_surface_t *dest,
 					      const char *src, int src_pitch);
 void		    qxl_surface_unref        (surface_cache_t *cache,
 					      uint32_t surface_id);
-					      
+
+/* composite */
+Bool		    qxl_surface_prepare_composite (int op,
+						   PicturePtr	src_picture,
+						   PicturePtr	mask_picture,
+						   PicturePtr   dst_picture,
+						   qxl_surface_t *src,
+						   qxl_surface_t *mask,
+						   qxl_surface_t *dest);
+void		   qxl_surface_composite (qxl_surface_t *dest,
+					  int src_x, int src_y,
+					  int mask_x, int mask_y,
+					  int dst_x, int dst_y,
+					  int width, int height);
+
 #if HAS_DEVPRIVATEKEYREC
 extern DevPrivateKeyRec uxa_pixmap_index;
 #else
diff --git a/src/qxl_driver.c b/src/qxl_driver.c
index 8f5735e..7e25b3f 100644
--- a/src/qxl_driver.c
+++ b/src/qxl_driver.c
@@ -1199,12 +1199,6 @@ DevPrivateKeyRec uxa_pixmap_index;
 int uxa_pixmap_index;
 #endif
 
-static Bool
-unaccel (void)
-{
-    return FALSE;
-}
-
 static Bool
 qxl_prepare_access (PixmapPtr pixmap, RegionPtr region, uxa_access_t access)
 {
@@ -1317,6 +1311,35 @@ qxl_done_copy (PixmapPtr dest)
 /*
  * Composite
  */
+static Bool
+can_accelerate_picture (PicturePtr pict)
+{
+    if (pict->format != PICT_a8r8g8b8		&&
+	pict->format != PICT_x8r8g8b8		&&
+	pict->format != PICT_a8)
+    {
+	return FALSE;
+    }
+
+    if (pict->transform)
+    {
+	if (pict->transform->matrix[2][0] != 0	||
+	    pict->transform->matrix[2][1] != 0	||
+	    pict->transform->matrix[2][2] != pixman_int_to_fixed (1))
+	{
+	    return FALSE;
+	}
+    }
+
+    if (pict->filter != PictFilterBilinear	&&
+	pict->filter != PictFilterNearest)
+    {
+	return FALSE;
+    }
+    
+    return TRUE;
+}
+
 static Bool
 qxl_check_composite (int op,
 		     PicturePtr pSrcPicture,
@@ -1324,20 +1347,48 @@ qxl_check_composite (int op,
 		     PicturePtr pDstPicture,
 		     int width, int height)
 {
+    int i;
+
+    static const int accelerated_ops[] =
+    {
+	PictOpClear, PictOpDst, PictOpOver, PictOpOverReverse,
+	PictOpIn, PictOpInReverse, PictOpOut, PictOpOutReverse,
+	PictOpAtop, PictOpAtopReverse, PictOpXor, PictOpAdd,
+	PictOpSaturate, PictOpMultiply, PictOpScreen, PictOpOverlay,
+	PictOpDarken, PictOpLighten, PictOpColorDodge, PictOpColorBurn,
+	PictOpHardLight, PictOpSoftLight, PictOpDifference, PictOpExclusion,
+	PictOpHSLHue, PictOpHSLSaturation, PictOpHSLColor, PictOpHSLLuminosity,
+    };
+    
+    if (!can_accelerate_picture (pSrcPicture)	||
+	!can_accelerate_picture (pMaskPicture)	||
+	!can_accelerate_picture (pDstPicture))
+    {
+	return FALSE;
+    }
+
+    for (i = 0; i < sizeof (accelerated_ops) / sizeof (accelerated_ops[0]); ++i)
+    {
+	if (accelerated_ops[i] == op)
+	    goto found;
+    }
     return FALSE;
+
+found:
+    return TRUE;
 }
 
 static Bool
 qxl_check_composite_target (PixmapPtr pixmap)
 {
-    return FALSE;
+    return TRUE;
 }
 
 static Bool
 qxl_check_composite_texture (ScreenPtr screen,
 			     PicturePtr pPicture)
 {
-    return FALSE;
+    return TRUE;
 }
 
 static Bool
@@ -1349,7 +1400,11 @@ qxl_prepare_composite (int op,
 		       PixmapPtr pMask,
 		       PixmapPtr pDst)
 {
-    return FALSE;
+    return qxl_surface_prepare_composite (
+	op, pSrcPicture, pMaskPicture, pDstPicture,
+	get_surface (pSrc),
+	get_surface (pMask),
+	get_surface (pDst));
 }
 
 static void
@@ -1359,13 +1414,17 @@ qxl_composite (PixmapPtr pDst,
 	       int dst_x, int dst_y,
 	       int width, int height)
 {
-    
+    qxl_surface_composite (
+	get_surface (pDst),
+	src_x, src_y,
+	mask_x, mask_x,
+	dst_x, dst_y, width, height);
 }
 
 static void
 qxl_done_composite (PixmapPtr pDst)
 {
-    
+    ;
 }
 
 static Bool
diff --git a/src/qxl_surface.c b/src/qxl_surface.c
index 6ac3f13..927f892 100644
--- a/src/qxl_surface.c
+++ b/src/qxl_surface.c
@@ -1367,6 +1367,29 @@ qxl_surface_copy (qxl_surface_t *dest,
     push_drawable (qxl, drawable);
 }
 
+/* composite */
+Bool
+qxl_surface_prepare_composite (int op,
+			       PicturePtr	src_picture,
+			       PicturePtr	mask_picture,
+			       PicturePtr   dst_picture,
+			       qxl_surface_t *src,
+			       qxl_surface_t *mask,
+			       qxl_surface_t *dest)
+{
+    return FALSE;
+}
+
+void
+qxl_surface_composite (qxl_surface_t *dest,
+		       int src_x, int src_y,
+		       int mask_x, int mask_y,
+		       int dst_x, int dst_y,
+		       int width, int height)
+{
+    ;
+}
+
 Bool
 qxl_surface_put_image (qxl_surface_t *dest,
 		       int x, int y, int width, int height,
-- 
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