Changeset 103 for trunk/src/gfx

Timestamp:

06/04/13 19:10:57 (12 years ago)

Author:

epyon

Message:

• texture_font - proper support for depth 4

File:

• trunk/src/gfx/texture_font.cc (modified) (4 diffs)

trunk/src/gfx/texture_font.cc

@@ -71 +71 @@
 }
 
+static uint8* convert_to_rgba(uint8* rgb, const int lines, const int line_count, const int line_bpitch )
+{
+        uint8* result = new uint8[ lines * line_count * 4 ];
+        uint8* rgba   = result;
+        for(int l=0; l<lines; ++l) 
+        {
+                for(int c=0; c<line_count; ++c)
+                {
+                        for(int j=0; j<3; ++j) {
+                                rgba[j]  = rgb[j];
+                        }
+                        rgba[3] = uint8( uint16( rgb[0] + rgb[1] + rgb[2] ) / 3 );
+                        rgba += 4;
+                        rgb  += 3;
+                }
+                rgb += line_bpitch - ( 3 * line_count );
+        }
+        return result;
+}
+
 bool texture_font::load_glyphs( const std::string& codes )
 {
@@ -87 +107 @@
         } 
 
-        if( m_atlas->get_depth() == 3 )
+        if( m_atlas->get_depth() >= 3 )
         {
                 FT_Library_SetLcdFilter( (FT_Library)(m_rlibrary), FT_LCD_FILTER_LIGHT );
@@ -115 +135 @@
                 int ft_glyph_top    = slot->bitmap_top;
                 int ft_glyph_left   = slot->bitmap_left;
+                int reg_width       = ft_bitmap_width / (depth > 3 ? 3 : depth);
 
-                glm::ivec2 gsize( ft_bitmap_width/depth + 1, ft_bitmap_rows + 1 ); 
+                glm::ivec2 gsize( reg_width + 1, ft_bitmap_rows + 1 ); 
                 region r = m_atlas->get_region( gsize );
                 if ( r.pos.x < 0 ) 
@@ -126 +147 @@
                         NV_THROW( std::runtime_error, error_msg.str().c_str() );
                 }
-                r.size.x -= 1;
-                r.size.y -= 1;
-                m_atlas->set_region( r, ft_bitmap.buffer, ft_bitmap.pitch );
+                if (depth == 4)
+                {
+                        r.size.x -= 1;
+                        r.size.y -= 1;
+                        uint8* data = convert_to_rgba(ft_bitmap.buffer, r.size.y, r.size.x, ft_bitmap.pitch );
+                        m_atlas->set_region( r, data );
+                        delete data;
+                }
+                else
+                {
+                        r.size.x -= 1;
+                        r.size.y -= 1;
+                        m_atlas->set_region( r, ft_bitmap.buffer, ft_bitmap.pitch );
+                }
 
                 m_glyphs[ c ] = texture_glyph();