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Homebrew PS2, PSP & PS3 Development Discussions
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Fakeuser
Joined: 01 Sep 2007
Posts: 15
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 Posted: Sun Jun 20, 2010 12:27 am Post subject: How to use SyncDCache properyly? |
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I'm probably having trouble with SyncDCache.It doesn't work.
It's a font program.
There is a 640x480 PSMCT4 image(mem_image) in the memory.
Font data was converted to PSMCT4 format on the fly,then was writed into this image,and was displayed.
Problem is:When display() runs,it always display things that should be displayed last time.
Eg:I first write "X" font data,display() runs,it display nothing.
then I write "Y" font data,display() runs,it display "X".
then I write "Z" font data,display() runs,it display "Y".
.....
can someone help me?
| Code: |
static inline void putpixel(unsigned char *memimg,unsigned char* src, int offset)
{
// font width 20 height 23
int i,j,x,y;
x=offset%32;
y=offset/32;
x=x*(20/2);
y=(y*2)*(640/2);
for(j=0;j<18;j++){
for(i=0;i<9;i++){
memimg[y+j*(640/2)+x+i]=src[j*9+i];
}
}
SyncDCache(memimg+y, memimg+y+(640/2)*23);
}
static int display(unsigned char *pixel, int num)
{
unsigned char buf[512];
convToPSMCT4(pixel, buf);
putpixel(mem_image,buf,num);
gs_load(mem_image);
displayfont();
......
}
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Mega Man
Joined: 18 Jun 2005
Posts: 274
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| Posted: Fri Jun 25, 2010 8:58 am Post subject: |
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| I assume that SyncDCache is working, but the problem is somewhere else. Maybe you are confusing the frame buffers or there is just a missing GS_TEXFLUSH or your data is not properly aligned. What graphic library are you using? |
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Fakeuser
Joined: 01 Sep 2007
Posts: 15
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| Posted: Thu Jul 01, 2010 9:08 pm Post subject: |
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Thanks your attention.
Forget it,I found it's old pcsx2's fault.:p |
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