added option to turn off Text anti-aliasing in the UI

(userpref->system), with a great help from brecht (its been way too long
for me).

However as brecht pointed out that the non-AA text is slightly lareger
then AA'ed Text :S, i did not do anything about this as this commit was
just the option not the text drawing.

this commit also makes it possible to do all kinds of UI textrender options

4 files changed, 34 insertions, 3 deletions

diff --git a/source/blender/blenfont/BLF_api.h b/source/blender/blenfont/BLF_api.h
index f5e082a5d27..d32922f2429 100644
--- a/source/blender/blenfont/BLF_api.h
+++ b/source/blender/blenfont/BLF_api.h
@@ -34,6 +34,8 @@ struct rctf;
 int BLF_init(int points, int dpi);
 void BLF_exit(void);
 
+void BLF_cache_clear(void);
+
 int BLF_load(const char *name);
 int BLF_load_mem(const char *name, unsigned char *mem, int mem_size);
 
diff --git a/source/blender/blenfont/intern/blf.c b/source/blender/blenfont/intern/blf.c
index eb7a89bf840..febd3d9d6f7 100644
--- a/source/blender/blenfont/intern/blf.c
+++ b/source/blender/blenfont/intern/blf.c
@@ -103,6 +103,18 @@ void BLF_exit(void)
 	blf_font_exit();
 }
 
+void BLF_cache_clear(void)
+{
+	FontBLF *font;
+	int i;
+
+	for (i= 0; i < global_font_num; i++) {
+		font= global_font[i];
+		if (font)
+			blf_glyph_cache_clear(font);
+	}
+}
+
 static int blf_search(const char *name)
 {
 	FontBLF *font;
diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c
index 2c0b833297e..c36496fb542 100644
--- a/source/blender/blenfont/intern/blf_glyph.c
+++ b/source/blender/blenfont/intern/blf_glyph.c
@@ -41,6 +41,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_vec_types.h"
+#include "DNA_userdef_types.h"
 
 #include "BLI_blenlib.h"
 
@@ -115,6 +116,23 @@ GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font)
 	return(gc);
 }
 
+void blf_glyph_cache_clear(FontBLF *font)
+{
+	GlyphCacheBLF *gc;
+	GlyphBLF *g;
+	int i;
+
+	for(gc=font->cache.first; gc; gc=gc->next) {
+		for (i= 0; i < 257; i++) {
+			while (gc->bucket[i].first) {
+				g= gc->bucket[i].first;
+				BLI_remlink(&(gc->bucket[i]), g);
+				blf_glyph_free(g);
+			}
+		}
+	}
+}
+
 void blf_glyph_cache_free(GlyphCacheBLF *gc)
 {
 	GlyphBLF *g;
@@ -193,12 +211,10 @@ GlyphBLF *blf_glyph_add(FontBLF *font, FT_UInt index, unsigned int c)
 	GlyphBLF *g;
 	FT_Error err;
 	FT_Bitmap bitmap, tempbitmap;
-	int sharp;
+	int sharp = (U.text_render & USER_TEXT_DISABLE_AA);
 	FT_BBox bbox;
 	unsigned int key;
 
-	sharp = 0; /* TODO make the value be configurable somehow */
-
 	g= blf_glyph_search(font->glyph_cache, c);
 	if (g)
 		return(g);
diff --git a/source/blender/blenfont/intern/blf_internal.h b/source/blender/blenfont/intern/blf_internal.h
index bded1feb9bb..afe40973269 100644
--- a/source/blender/blenfont/intern/blf_internal.h
+++ b/source/blender/blenfont/intern/blf_internal.h
@@ -56,6 +56,7 @@ void blf_font_free(FontBLF *font);
 
 GlyphCacheBLF *blf_glyph_cache_find(FontBLF *font, int size, int dpi);
 GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font);
+void blf_glyph_cache_clear(FontBLF *font);
 void blf_glyph_cache_free(GlyphCacheBLF *gc);
 
 GlyphBLF *blf_glyph_search(GlyphCacheBLF *gc, unsigned int c);