![]() ![]() You can change this number in the demo (file: PhysX3FlagDemodemophysx3flagv2gl3.xml, line 100).īut for many clothes with around 2000 vertices, GPU PhysX is the solution. To get the max performance, the grid that shapes the flag must have around 2500 vertices (5050) to fit in GPU shared memory.Īs soon as you use a grid with more vertices (8080 for example), theres no difference between the GPU and the CPU. Here are some framerates for the GTX 780 testbed (Intel i5-4670K): CPU PhysX: 180 FPS GPU PhysX: 280 FPS. The GeForce GTX 780, for example, has 12 SMX, thats why the demo creates 12 flags to fully exploit the GK110, each cloth being simulated by a SMX (192 CUDA cores). To take advantage of GPU PhysX for clothes, a PhysX application should create more cloth instances than the number of SMX (streaming multiprocessors). ![]()
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