April 2013
Intermediate to advanced
382 pages
11h 42m
English
Content preview from GPU Pro 4
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4. Practical Framebuffer Compression 223
8-bit
8.28
8.18
16-bit
4.61
8.07
32-bit
2.42
4.56
Uncompressed
Compressed
0
2
4
6
8
10
Gpixels/second
Fill-ratewithoutBlending
8-bit 16-bit 32-bit
8.28 4.56 1.1
8.18 4.52 1.99
Uncompressed
Compressed
0
2
4
6
8
10
Gpixels/second
Fill-ratewithBlending
Figure 4.6. Fill-rate measurements (in gigapixels per second) when using the compressed
framebuffer to perform forward rendering.
can rasterize pixels, and it is directly proportional to the available framebuffer
bandwidth and the number of bits emitted for each pixel. Figure 4.6 shows the
actual measurements on an Nvidia GTX 460 with 768 MB of memory (192-bit
bus). The compressed framebuffer ...
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