#9646 BLOC 1.5-F11: Switch to 24bpp

[Zarro Boogs per Child]

#9646: Switch to 24bpp
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           Reporter:  cjb                  |       Owner:  wmb at firmworks.com
               Type:  defect               |      Status:  new              
           Priority:  blocker              |   Milestone:  1.5-F11          
          Component:  ofw - open firmware  |     Version:  not specified    
         Resolution:                       |    Keywords:                   
        Next_action:  code                 |    Verified:  0                
Deployment_affected:                       |   Blockedby:                   
           Blocking:                       |  
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Comment(by dsd):

 indeed, problems with green and blue

 I came up with a working macro. Does it suck? Here they are in a head-to-
 head deathmatch, for each colour component:

 {{{
 #include <stdint.h>
 #include <stdio.h>
 #define TOARGB_mitch(s)  (0xff070307 | (((s) >> 11) << 19) | (((s) << 27)
 >> 24) | (((s) << 27) >> 10))
 #define TOARGB(s)  (0xff070307 | (((s) >> 11) << 19) | ((s & 0x07e0) << 5)
 | ((s & 0x001f) << 3))

 int main(void)
 {
         uint16_t red = 0xf800, green = 0x07e0, blue = 0x001f;
         printf("Mitch: %x %x %x\n", TOARGB_mitch(red),
 TOARGB_mitch(green), TOARGB_mitch(blue));
         printf("dsd:   %x %x %x\n", TOARGB(red), TOARGB(green),
 TOARGB(blue));
 }
 }}}

 Output:

 {{{
 Mitch: ffff0307 ff070307 ffffffff
 dsd:   ffff0307 ff07ff07 ff0703ff
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/9646#comment:10>
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