Author: Carlos Lopez <[email protected]>
Date: Thu Sep 6 22:29:42 2012 +0200
SuperSample layer: add support for Cairo render
---
synfig-core/src/modules/lyr_std/supersample.cpp | 60 +++++++++++++++++++++++
synfig-core/src/modules/lyr_std/supersample.h | 1 +
2 files changed, 61 insertions(+), 0 deletions(-)
diff --git a/synfig-core/src/modules/lyr_std/supersample.cpp
b/synfig-core/src/modules/lyr_std/supersample.cpp
index affb827..a01ce30 100644
--- a/synfig-core/src/modules/lyr_std/supersample.cpp
+++ b/synfig-core/src/modules/lyr_std/supersample.cpp
@@ -216,6 +216,66 @@ SuperSample::accelerated_render(Context context,Surface
*surface,int quality, co
return true;
}
+////
+bool
+SuperSample::accelerated_cairorender(Context context,cairo_surface_t
*surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+ // don't bother supersampling if our quality is too low.
+ if(quality>=10 || (width==1 && height==1))
+ return
context.accelerated_cairorender(surface,quality,renddesc,cb);
+
+ RendDesc desc(renddesc);
+
+ desc.clear_flags();
+ desc.set_wh(desc.get_w()*width,desc.get_h()*height);
+ cairo_surface_t* tempsurface=cairo_surface_create_similar(surface,
CAIRO_CONTENT_COLOR_ALPHA, renddesc.get_w()*width, renddesc.get_h()*height);
+ // Render the scene
+ if(!context.accelerated_cairorender(tempsurface,quality,desc,cb))
+ {
+ if(cb)cb->error(strprintf(__FILE__"%d: Accelerated
Renderer Failure",__LINE__));
+ return false;
+ }
+
+ // Calculate the scales values
+ float scalex=1.0/width;
+ float scaley=1.0/height;
+ // Calculate the cairo filter based on quality
+ cairo_filter_t filter;
+ switch(quality)
+ {
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ case 5: // Best
+ filter=CAIRO_FILTER_BEST;
+ break;
+ case 6:
+ case 7:
+ case 8: // Good
+ filter=CAIRO_FILTER_GOOD;
+ break;
+ case 9: // Fast
+ default:
+ filter=CAIRO_FILTER_FAST;
+ break;
+ }
+ cairo_t* cr=cairo_create(surface);
+ cairo_scale(cr, scalex, scaley);
+ cairo_set_source_surface(cr, tempsurface, 0,0);
+ cairo_pattern_set_filter(cairo_get_source(cr), filter);
+
+ cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint(cr);
+
+ cairo_destroy(cr);
+ cairo_surface_destroy(tempsurface);
+
+ return true;
+}
+
+////
+
Layer::Vocab
SuperSample::get_param_vocab(void)const
{
diff --git a/synfig-core/src/modules/lyr_std/supersample.h
b/synfig-core/src/modules/lyr_std/supersample.h
index 564d0d9..8c65178 100644
--- a/synfig-core/src/modules/lyr_std/supersample.h
+++ b/synfig-core/src/modules/lyr_std/supersample.h
@@ -56,6 +56,7 @@ public:
virtual ValueBase get_param(const String & param)const;
virtual bool accelerated_render(Context context,Surface *surface,int
quality, const RendDesc &renddesc, ProgressCallback *cb)const;
+ virtual bool accelerated_cairorender(Context context,cairo_surface_t
*surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
virtual synfig::Rect get_bounding_rect(Context context)const;
virtual Vocab get_param_vocab()const;
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