diff options
Diffstat (limited to 'source/blender/blenfont')
| -rw-r--r-- | source/blender/blenfont/BLF_api.h | 1 | ||||
| -rw-r--r-- | source/blender/blenfont/intern/blf_glyph.c | 27 |
2 files changed, 24 insertions, 4 deletions
diff --git a/source/blender/blenfont/BLF_api.h b/source/blender/blenfont/BLF_api.h index a045f47cb40..8752defcc15 100644 --- a/source/blender/blenfont/BLF_api.h +++ b/source/blender/blenfont/BLF_api.h @@ -197,6 +197,7 @@ void BLF_dir_free(char **dirs, int count); #define BLF_KERNING_DEFAULT (1<<3) #define BLF_MATRIX (1<<4) #define BLF_ASPECT (1<<5) +#define BLF_TEXFILTER (1<<6) #define BLF_DRAW_STR_DUMMY_MAX 1024 diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c index f0cfcdc97b9..0e7cbb8cf1c 100644 --- a/source/blender/blenfont/intern/blf_glyph.c +++ b/source/blender/blenfont/intern/blf_glyph.c @@ -54,6 +54,8 @@ #include "blf_internal_types.h" #include "blf_internal.h" +#define _BLF_PADDING 3 +#define _BLF_MIPMAP_LEVELS 3 GlyphCacheBLF *blf_glyph_cache_find(FontBLF *font, int size, int dpi) { @@ -87,7 +89,11 @@ GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font) gc->cur_tex= -1; gc->x_offs= 0; gc->y_offs= 0; - gc->pad= 3; + /* Increase padding for each mipmap level: 0->3, 1->4, 2->6, 3->10, ... */ + if (font->flags & BLF_TEXFILTER) + gc->pad= pow(2, _BLF_MIPMAP_LEVELS) + 2; + else + gc->pad= _BLF_PADDING; gc->num_glyphs= font->face->num_glyphs; gc->rem_glyphs= font->face->num_glyphs; @@ -296,13 +302,17 @@ void blf_glyph_free(GlyphBLF *g) static void blf_texture_draw(float uv[2][2], float dx, float y1, float dx1, float y2) { - + /* When a string is being rendered as individual glyphs (as in the game + * engine), the leading edge needs to be raised a fraction to prevent + * z-fighting for kerned characters. - z0r */ + float twist = (dx1 - dx) * 0.0002; + glBegin(GL_QUADS); glTexCoord2f(uv[0][0], uv[0][1]); - glVertex2f(dx, y1); + glVertex3f(dx, y1, twist); glTexCoord2f(uv[0][0], uv[1][1]); - glVertex2f(dx, y2); + glVertex3f(dx, y2, twist); glTexCoord2f(uv[1][0], uv[1][1]); glVertex2f(dx1, y2); @@ -405,6 +415,15 @@ int blf_glyph_render(FontBLF *font, GlyphBLF *g, float x, float y) glBindTexture(GL_TEXTURE_2D, g->tex); glTexSubImage2D(GL_TEXTURE_2D, 0, g->xoff, g->yoff, g->width, g->height, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap); + if (font->flags & BLF_TEXFILTER) { + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, + _BLF_MIPMAP_LEVELS); + glGenerateMipmap(GL_TEXTURE_2D); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, + GL_LINEAR_MIPMAP_LINEAR); + } glPopClientAttrib(); g->uv[0][0]= ((float)g->xoff) / ((float)gc->p2_width); |