Hardware-accelerated anti-aliased graphics

Details Hardware-accelerated anti-aliased graphics Hardware-accelerated anti-aliased graphics

2005-10-11

2005-10-11

Bella, Matthew C. (Department: 2672)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S423000, C345S424000, C345S418000, C345S611000, C345S612000, C345S619000, C345S629000

Reexamination Certificate

active

06954211

ABSTRACT:
In order to render a primitive, the primitive is subdivided into trapezoids and triangles. The subdivision occurs using scanline-aligned lines. These simple scanline-aligned regions are further subdivided so that the primitive is divided into simple scanline-boundaried trapezoids and other complex scan shapes. The simple scanline-boundaried trapezoids are rasterized. One rasterization method uses a texture map containing slope-based coverage information to edge areas. Gouraud shading may be used to provide the anti-aliasing effects on the scanline-boundaried trapezoids. The simple scanline-boundaried trapezoids may also be rasterized using a software rasterizer. Complex scans are rasterized using a software rasterizer. As data is already rasterized, it is thereby efficiently transferred to the GPU.

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