Re: Problem displaying an RGB image

On Thu, 5 Jun 2003, Nitin Mahajan wrote:
> I have got a problem displaying an RGB image on to screen by directly
> programming the framebuffer driver. I have attached the program with the
> mail.The sample RGB file is also there.
> 
>  CFile:main.c
> 
>  Compilation command I used: gcc -g main.c 
> 
> Iam not getting the proper Image on the screen.Can anyone please tell
> whre Iam going wrong or what am I missing in this attempt?

Try this patch:

--- putimage/main.c.orig	Fri Jun  6 09:29:45 2003
+++ putimage/main.c	Fri Jun  6 09:37:01 2003
@@ -96,13 +96,13 @@
    location = finfo.line_length?finfo.line_length:vinfo.xres_virtual*3;
   
    for ( y = 0; y < IMAGE_HEIGHT; y++ )
-    for ( x = 0; x < IMAGE_WIDTH;x+=3) {
+    for ( x = 0; x < IMAGE_WIDTH; x++) {
          
       /**********Code for displaying Aish RGB***************/
       
-      fbp[y*location+x*3]=buff[y*IMAGE_WIDTH*3+x];
-      fbp[y*location+x*3+1]=buff[y*IMAGE_WIDTH*3+x+1];
-      fbp[y*location+x*3+2]=buff[y*IMAGE_WIDTH*3+x+2];
+      fbp[y*location+x*3]=buff[(y*IMAGE_WIDTH+x)*3];
+      fbp[y*location+x*3+1]=buff[(y*IMAGE_WIDTH+x)*3+1];
+      fbp[y*location+x*3+2]=buff[(y*IMAGE_WIDTH+x)*3+2];
      
       /******************************************************/
           

BTW, there's still something wrong with the colors. Are you sure they're in RGB
format?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds



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