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Using
OpenGL
Application
Rasterization
Accelerator
Geometry Accelerator
(Z13, Z25, and V25 Optional)
Geometry Processing
Pixelization
Accelerator
Frame Buffer
Monitor
Texture
Processor
(Optional)
Pixelization Accelerator
The Pixelization Accelerator consists of PCIDMA, graphics first-in-first-out (FIFO), and the
Graphics Engine. The standard PCI bus provides high bandwidth support for the transfer of
graphics data between the host processor and the Rasterization Accelerator. If the Geometry
Accelerator is present (for Z13, Z25, and V25), then the system transfers data from the host
processor to the Geometry Accelerator, which then transfers data to the Rasterization
Accelerator via a dedicated bus.
The Rasterization Accelerator receives GDI or OpenGL element requests from the host
processor (or from the Geometry Accelerator, if present), through the PCIDMA and graphics
FIFO. Element types include triangles, triangle meshes, lines, line strings, and others. The
Graphics Engine ASIC converts the elements to pixels and routes them through the resolvers
to video memory.
The Rasterization Accelerator also performs region fills, bit expands, and BIT BLock Transfer
(BITBLT) operations. Optional processing of the pixels is performed by the Texture
Processor prior to the Graphics Engine sending them to the resolvers.
Содержание RealiZm Graphics V25
Страница 1: ...RealiZm Graphics Hardware User s Guide February 1997 DHA017120...
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