public abstract void fillTriangle(int x1, int y1, int x2, int y2, int x3, int y3, int color);
public abstract void drawPicture(Picture p, Affine a, Mesh h);
public abstract void drawGlyph(Font.Glyph source, Affine a, Mesh h, int rgb, int bg);
public abstract void fillTriangle(int x1, int y1, int x2, int y2, int x3, int y3, int color);
public abstract void drawPicture(Picture p, Affine a, Mesh h);
public abstract void drawGlyph(Font.Glyph source, Affine a, Mesh h, int rgb, int bg);