Systems and methods for compressing rasterization setup data within a sort middle graphics architecture

• US 6,995,769 B2
• Filed: 03/21/2002
• Issued: 02/07/2006
• Est. Priority Date: 03/21/2002
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Ordentlich, Erik, Wittenbrink, Craig M
• Primary Examiner(s): Nguyen, Kimbinh T.
• Application Number:
  US10/104,504
• Publication Number:
  US 20030179195A1
• Time in Patent Office: 1,419 Days
• Field of Search: 345/423, 345/502, 345/504, 345/506, 345/505, 345/419, 345/520, 345/555, 345/556, 382/232
• US Class Current: 345/520
• CPC Class Codes: G06T 15/005 General purpose rendering architectures
• CPC Class Codes: G06T 9/00 Image coding bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00

Abstract

A sort middle graphics architecture comprising a host interface for receiving raw primitive data from a graphics application; a geometry processing module coupled to the host interface for receiving the raw primitive data from the host interface and generating sort middle traffic data, said geometry processing module a having a built-in compression module for compressing the sort middle traffic data; and a rasterization module coupled to the host interface for receiving the compressed sort middle traffic data and rasterizing the data, said rasterization module having a built-in decompression module for decompressing the sort middle traffic data before it is rasterized.

Claims

1. A sort middle graphics architecture comprising:

a host interface for receiving raw primitive data from a graphics application;

a geometry processing module coupled to the host interface for receiving the raw primitive data from the host interface and generating sort middle traffic data, said geometry processing module having a built-in compression module for compressing the sort middle traffic data; and

a rasterization module coupled to the host interface for receiving the compressed sort middle traffic data and rasterizing the data, said rasterization module having a built-in decompression module for decompressing the sort middle traffic data before it is rasterized.

2. The sort middle graphics architecture of claim 1, wherein the geometry processing module further includes a floating to fixed point data conversion module for converting the sort middle traffic data from a floating point format into a fixed point format before the data is compressed.

3. The sort middle graphics architecture of claim 1, wherein the built-in compression module compresses the sort middle traffic data using a constant color compression method.

4. The sort middle graphics architecture of claim 1, wherein the built-in compression module compresses the sort middle traffic data using a delta coding compression method.

5. The sort middle graphics architecture of claim 1, wherein the built-in compression module compresses the sort middle traffic data using a slope coding compression method.

6. The sort middle graphics architecture of claim 1, wherein the built-in compression module compresses the sort middle traffic data using a color quantization compression method.

7. A method for processing graphics data for an image to be rendered, said method comprising:

receiving raw primitive for an image to be rendered;

utilizing a geometry processing module in order to process the raw primitive data and generate sort middle traffic data;

compressing the sort middle traffic data and then transmitting the compressed sort middle traffic data to a rasterization module; and

decompressing the sort middle traffic data and rasterizing the decompressed sort middle traffic data.

8. The method of claim 7, wherein the sort middle traffic data is converted from a floating point format into a fixed point format before the data is compressed.

9. The method of claim 7, wherein the data is culled before it is compressed.

10. The method of claim 7, wherein the sort middle traffic data is compressed using a constant color compression method.

11. The method of claim 7, wherein the sort middle traffic data is compressed using a delta coding compression method.

12. The method of claim 7, wherein the sort middle traffic data is compressed using a slope coding compression method.

13. The method of claim 7, wherein the sort middle traffic data is compressed using a color quantization compression method.

14. A computer program product for causing a geometry processing module, coupled to a host interface, to receive raw primitive data from the host interface and generate sort middle traffic data for an image to be rendered, said computer program product causing the geometry processing module to perform the following steps:

receive raw primitive for an image to be rendered;

generate sort middle traffic data; and

compress the sort middle traffic data and then transmit the compressed sort middle traffic data to a rasterization module.

15. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to convert the sort middle traffic data from a floating point format into a fixed point format before the data is compressed.

16. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to perform a culling operation on the sort middle traffic before the data is compressed.

17. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to compress the sort middle traffic data using a constant color compression method.

18. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to compress the sort middle traffic data using a delta coding compression method.

19. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to compress the sort middle traffic data using a slope coding compression method.

20. The computer program product of claim 14, wherein the computer program product causes the geometry processing module to compress the sort middle traffic data using a color quantization compression method.