i.MX ProcessorsのトピックLow g2d_blit performance https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/416184#M62513 <HTML><HEAD></HEAD><BODY><P>Hello.</P><P>I'm now working on porting game of my company to i.mx6Solo custom board. Games is 2D and based on sprites.</P><P>Whole graphics was operated with SDL on PC and when we just built project with cross compile we had very low FPS. I decided to replace blit functions that were operating by SDL with g2d_blit operations.</P><P>All graphic resources are stored in memory as ARGB8888. First i blit resources to shadow buffer and then blit shadow buffer directly to /dev/fb0 (this is necessary to keep FPS stable for animation not to be too fast or too slow). In this workaround i meet very low blit performance when scene in game has very many little images over background (many string, which generated from one big font texture). So after this i have FPS about 45 for 640x480 resolution!</P><P></P><P>Could anyone please tell me whether i was wrong when decided to use g2d as 2d video card or i do something wrong with blitting directly to /dev/fb0? May be there's more legant ways to do what I want?</P><P></P><P>Sorry for my English, it's not my native language.</P></BODY></HTML> Mon, 16 Nov 2015 16:16:36 GMT alexeysizyukhin 2015-11-16T16:16:36Z Low g2d_blit performance https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/416184#M62513 <HTML><HEAD></HEAD><BODY><P>Hello.</P><P>I'm now working on porting game of my company to i.mx6Solo custom board. Games is 2D and based on sprites.</P><P>Whole graphics was operated with SDL on PC and when we just built project with cross compile we had very low FPS. I decided to replace blit functions that were operating by SDL with g2d_blit operations.</P><P>All graphic resources are stored in memory as ARGB8888. First i blit resources to shadow buffer and then blit shadow buffer directly to /dev/fb0 (this is necessary to keep FPS stable for animation not to be too fast or too slow). In this workaround i meet very low blit performance when scene in game has very many little images over background (many string, which generated from one big font texture). So after this i have FPS about 45 for 640x480 resolution!</P><P></P><P>Could anyone please tell me whether i was wrong when decided to use g2d as 2d video card or i do something wrong with blitting directly to /dev/fb0? May be there's more legant ways to do what I want?</P><P></P><P>Sorry for my English, it's not my native language.</P></BODY></HTML> Mon, 16 Nov 2015 16:16:36 GMT https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/416184#M62513 alexeysizyukhin 2015-11-16T16:16:36Z Re: Low g2d_blit performance https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/416185#M62514 <HTML><HEAD></HEAD><BODY><P>Found answer myself.</P><P></P><P>In all examples i saw g2d_finish() was called after every g2d_blit() but this is not necessary. Actually g2d_finish() must be called just to draw 1 frame for example it must be called in flip() routine where i blit shadow bufer to screen.</P></BODY></HTML> Tue, 17 Nov 2015 12:23:28 GMT https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/416185#M62514 alexeysizyukhin 2015-11-17T12:23:28Z Re: Low g2d_blit performance https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/1748152#M214861 <P>How did you obtain the physical address of FB？</P> Sun, 29 Oct 2023 09:40:45 GMT https://community.nxp.com/t5/i-MX-Processors/Low-g2d-blit-performance/m-p/1748152#M214861 mengfei 2023-10-29T09:40:45Z