Mercurial > MadButterfly

diff src/graph_engine_openvg.c @ 619:7020ed3c3e37 openvg

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Actiavte a VGImage before using a pattern paint or image surface. - A VGImage can only activated for a pattern or an image in any instance. - _ge_openvg_img trace the object activated for currently and its deactivation function. - everytime a pattern paint or image surface will be used, the current activated one will be deactivated, and activate a new one.
author Thinker K.F. Li <thinker@branda.to>
date Thu, 08 Jul 2010 18:44:26 +0800
parents 35a67a837a53
children 39bd74da7f92
line wrap: on
line diff
--- a/src/graph_engine_openvg.c	Thu Jul 08 13:51:47 2010 +0800
+++ b/src/graph_engine_openvg.c	Thu Jul 08 18:44:26 2010 +0800
@@ -80,8 +80,8 @@
     }
     ge_img->ref = 1;
     ge_img->img = vg_img;
-    ge_img->asso_pattern = NULL;
-    ge_img->asso_surface = NULL;
+    ge_img->activated_for = NULL;
+    ge_img->deactivate_func = NULL;
 
     return ge_img;
 }
@@ -89,12 +89,89 @@
 /*! \brief Free image object for OpenVG */
 static void
 _free_vgimage(_ge_openvg_img_t *ge_img) {
-    if(--ge_img->ref > 0)
+    if(--ge_img->ref > 0) {
+	if(ge_img->activated_for) {
+	    ge_img->deactivate_func(ge_img->activated_for);
+	    ge_img->activated_for = NULL;
+	}
 	return;
+    }
+    
     vgDestroyImage(ge_img->img);
     free(ge_img);
 }
 
+static void
+_ge_vg_img_deactivate_for_pattern(void *obj) {
+    mbe_pattern_t *ptn = (mbe_pattern_t *)obj;
+    VGPaint vg_paint;
+
+    vg_paint = ptn->paint;
+    vgPaintPattern(vg_paint, VG_INVALID_HANDLE);
+}
+
+/*! \brief Activate a VGImage for a pattern paint.
+ * 
+ * \sa _ge_openvg_img
+ */
+void
+_ge_vg_img_activate_for_pattern(mbe_pattern_t *ptn) {
+    _ge_openvg_img_t *ge_img;
+    VGPaint vg_paint;
+    VGImage vg_img;
+
+    ge_img = ptn->asso_img;
+    if(ge_img == NULL)
+	return;
+
+    if(ge_img->activated_for == (void *)ptn)
+	return;
+
+    if(ge_img->activated_for)
+	ge_img->deactivate_func(ge_img->activated_for);
+
+    ge_img->activated_for = ptn;
+    ge_img->deactivate_func = _ge_vg_img_deactivate_for_pattern;
+    
+    vg_img = ge_img->img;
+    vg_paint = ptn->paint;
+
+    vgPaintPattern(vg_paint, vg_img);
+}
+
+/*! \brief Deactivate a VGImage for a VGSurface.
+ *
+ * A VGImage can not deatached from VGSurface.  But, it is not clear
+ * in the document of EGL.  We assume that a VGImage can be used as
+ * pattern of a paint, once associated surface is not current
+ * rendering context.
+ */
+static void
+_ge_vg_img_deactivate_for_surface(void *obj) {
+}
+
+/*! \brief Activate a VGImage for a surface
+ * 
+ * \sa _ge_openvg_img
+ */
+void
+_ge_vg_img_activate_for_surface(mbe_surface_t *surf) {
+    _ge_openvg_img_t *ge_img;
+    
+    ge_img = surf->asso_img;
+    if(ge_img == NULL)
+	return;
+    
+    if(ge_img->activated_for == (void *)surf)
+	return;
+
+    if(ge_img->activated_for)
+	ge_img->deactivate_func(ge_img->activated_for);
+    
+    ge_img->activated_for = surf;
+    ge_img->deactivate_func = _ge_vg_img_deactivate_for_surface;
+}
+
 /*
  * This implementation supports only from image surface.
  */
@@ -263,8 +340,10 @@
 
 void
 mbe_pattern_destroy(mbe_pattern_t *ptn) {
-    if(ptn->asso_img) {
-    }
+    if(ptn->asso_img)
+	_free_vgimage(ptn->asso_img);
+    vgDestroyPaint(ptn->paint);
+    free(ptn);
 }
 
 void
@@ -498,6 +577,7 @@
     }
 
     surface->surface = egl_surface;
+    surface->asso_img = NULL;
 
     return surface;
 }
@@ -565,10 +645,8 @@
     if(surface->asso_mbe)
 	surface->asso_mbe->tgt = NULL;
 
-    if(surface->asso_img) {
-	surface->asso_img->asso_surface = NULL;
+    if(surface->asso_img)
 	_free_vgimage(surface->asso_img);
-    }
     
     free(surface);
 }