+void render_glyph(FT_GlyphSlot slot, int glyphx, int glyphy, unsigned char *buf, int r, int g, int b, bool use_lcd)
+{
+ FT_Bitmap *bm = &(slot->bitmap);
+ for (unsigned y = 0; y < bm->rows; y++) {
+ int xx;
+ int dsty = glyphy - slot->bitmap_top + y;
+ if (dsty < 0 || dsty > signed(screen_height-1)) continue;
+
+ unsigned char *dst = buf + dsty * screen_width*4 + (glyphx + slot->bitmap_left)*4;
+ unsigned char *src = bm->buffer + y * bm->pitch;
+ if (use_lcd) {
+ int width = (glyphx + slot->bitmap_left + bm->width/3 >= signed(screen_width)) ? ((screen_width-1) - glyphx - slot->bitmap_left) : bm->width/3;
+ for (xx = 0; xx < width; xx++) {
+ *dst = (*dst * (256-src[2]) + b * src[2]) >> 8;
+ ++dst;
+ *dst = (*dst * (256-src[1]) + g * src[1]) >> 8;
+ ++dst;
+ *dst = (*dst * (256-src[0]) + r * src[0]) >> 8;
+ ++dst;
+ *dst++ = 0;
+
+ src += 3;
+ }
+ } else {
+ int width = (glyphx + slot->bitmap_left + bm->width >= signed(screen_width)) ? ((screen_width-1) - glyphx - slot->bitmap_left) : bm->width;
+ for (xx = 0; xx < width; xx++) {
+ *dst = (*dst * (256-*src) + b * *src) >> 8;
+ ++dst;
+ *dst = (*dst * (256-*src) + g * *src) >> 8;
+ ++dst;
+ *dst = (*dst * (256-*src) + r * *src) >> 8;
+ ++dst;
+ *dst++ = 0;
+ ++src;
+ }
+ }
+ }
+}
+