Rendering module for bidimensional graphics

A graphics system, comprising:

• a processing unit;
• a memory module operatively associated to said memory module;
• and
• a graphics module operatively associated to said processing unit, the graphics module configured to render a bidimensional scene on a display screen, the graphics module including a sort-middle graphics pipeline,
• wherein the sort-middle graphics pipeline is configured to include:
• a scene buffer;
• a first processing module configured to clip a span-type input primitive received from a rasterizer module into sub-span type primitives associated with respective macro-blocks corresponding to portions of the display screen and to store said sub-span type primitives in the scene buffer, wherein the respective macro-blocks are of a size N×M, where N and M are greater than 1 and represent a number of pixels of the display screen;
• and
• a second processing module configured to reconstruct, starting from the sub-span type primitives, the span-type input primitive, and to cull occluded sub-span type primitives of the sub-span type primitives.

A method, comprising:

• rendering a bidimensional scene on a display screen, the rendering including:
• clipping, under control of a first processing module, a span-type input primitive received from a rasterizer module into sub-span type primitives associated with respective macro-blocks corresponding to portions of the display screen, wherein the respective macro-blocks corresponding to the portion of the display screen are of a fixed size N×M, where N and M are greater than 1 and represent a number of pixels of the display screen;
• storing the sub-span type primitives in a scene buffer;
• reconstructing, under control of a second processing module, the span-type input primitive starting from the sub-span type primitives;
• and
• culling, under control of the second processing module, an occluded span-type input primitive of the span-type input primitive.