Systems and methods for compositing a display image from display planes using enhanced blending hardware

A device, comprising:

• an internal memory having an internal matrix corresponding to a digital representation of a display screen, the internal matrix having internal transparency data indicating transparency of a macro block of the digital representation;
• and
• a hardware-implemented blend module configured to:
• access the internal matrix in the internal memory;
• read one of first display plane data from a first plane or second display plane data from a second plane if the internal matrix indicates the macro block is fully transparent or fully opaque;
• read the first display plane data from the first plane and the second display plane data from the second plane if the internal matrix indicates a translucent macro block;
• access a high-level external matrix stored external to the device if the internal transparency data indicates the macro block includes a window boundary, the high-level external matrix having high-level external transparency data indicating transparency of each pixel in the macro block;
• read one of the first display plane data or the second display plane data if the high-level external transparency data indicates a transparent pixel or an opaque pixel;
• read the first display plane data and the second display plane data if the high-level external transparency data indicates a translucent pixel;
• access a detailed external matrix stored external to the device, the detailed external matrix having alpha channel values, the detailed external matrix being accessed if:
• the internal transparency data indicates the macro block is translucent;
• or
• the high-level external transparency data indicates the pixel is translucent;
• blend the first display plane and the second display plane according to the detailed external transparency data;
• and
• generate an image to be displayed on the display screen including generating the image based on at least one of the first display plane data, the second display plane data, and a blend of the first display plane data and the second display plane data.

A device, comprising:

• means for accessing an internal matrix corresponding to a digital representation of a display screen, the internal matrix being stored in the device and having internal transparency data indicating transparency of a macro block of the digital representation;
• means for reading one of first display plane data from a first plane or second display plane data from a second plane if the internal matrix indicates the macro block is fully transparent or fully opaque;
• means for reading the first display plane data from the first plane and the second display plane data from the second plane if the internal matrix indicates a translucent macro block;
• means for accessing a high-level external matrix stored external to the device if the internal transparency data indicates the macro block includes a window boundary, the high-level external matrix having high-level external transparency data indicating transparency of each pixel in the macro block;
• means for reading one of the first display plane data or the second display plane data if the high-level external transparency data indicates a transparent pixel or an opaque pixel;
• means for reading the first display plane data and the second display plane data if the high-level external transparency data indicates a translucent pixel;
• means for accessing a detailed external matrix stored external to the device, the detailed external matrix having alpha channel values, the detailed external matrix being accessed if:
• the internal transparency data indicates the macro block is translucent;
• or
• the high-level external transparency data indicates the pixel is translucent;
• means for blending the first display plane and the second display plane according to the detailed external transparency data;
• and
• means for generating an image to be displayed on the display screen including generating the image based on at least one of the first display plane data, the second display plane data, and a blend of the first display plane data and the second display plane data.