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corrected some colorspace related info, added first 3D specific comments

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10382 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen 2004-12-09 20:01:25 +00:00
parent d9c9c29b59
commit cba5bd4452
1 changed files with 29 additions and 12 deletions
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41
src/add-ons/accelerants/nvidia/engine/nv_acc.c
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@ -1,6 +1,6 @@
/* NV Acceleration functions */
/* Author:
Rudolf Cornelissen 8/2003-9/2004.
Rudolf Cornelissen 8/2003-12/2004.
This code was possible thanks to the Linux NV driver.
*/
@ -372,15 +372,26 @@ status_t nv_acc_init()
}
/*** Set pixel width and format ***/
//fixme (3D?):
//the BPIXEL register holds the colorspaces for different engine 'contexts' or so.
//B0-3 is 'channel' 0, b4-7 is 'channel '1', etc.
//It looks like we are only using channel 0, so the settings for other channels
//shouldn't matter yet.
//When for instance rect_fill is going to be used on other buffers than the actual
//screen, it's colorspace should be corrected. When the engine is setup in 32bit
//desktop mode for example, the pixel's alpha channel doesn't get touched currently.
//choose mode $d (which is Y32) to get alpha filled too.
switch(si->dm.space)
{
case B_CMAP8:
/* acc engine */
ACCW(FORMATS, 0x00001010);
if (si->ps.card_arch < NV30A)
ACCW(BPIXEL, 0x00111111); /* set depth 0-5: 4 bits per color */
/* set depth 0-5: $1 = Y8 */
ACCW(BPIXEL, 0x00111111);
else
ACCW(BPIXEL, 0x00000021); /* set depth 0-1: 5 bits per color */
/* set depth 0-1: $1 = Y8, $2 = X1R5G5B5_Z1R5G5B5 */
ACCW(BPIXEL, 0x00000021);
ACCW(STRD_FMT, 0x03020202);
/* PRAMIN */
ACCW(PR_CTX1_0, 0x00000302); /* format is X24Y8, LSB mono */
@ -407,9 +418,11 @@ status_t nv_acc_init()
/* acc engine */
ACCW(FORMATS, 0x00002071);
if (si->ps.card_arch < NV30A)
ACCW(BPIXEL, 0x00226222); /* set depth 0-5: 4 bits per color */
/* set depth 0-5: $2 = X1R5G5B5_Z1R5G5B5, $6 = Y16 */
ACCW(BPIXEL, 0x00226222);
else
ACCW(BPIXEL, 0x00000042); /* set depth 0-1: 5 bits per color */
/* set depth 0-1: $2 = X1R5G5B5_Z1R5G5B5, $4 = A1R5G5B5 */
ACCW(BPIXEL, 0x00000042);
ACCW(STRD_FMT, 0x09080808);
/* PRAMIN */
ACCW(PR_CTX1_0, 0x00000902); /* format is X17RGB15, LSB mono */
@ -437,9 +450,11 @@ status_t nv_acc_init()
/* acc engine */
ACCW(FORMATS, 0x000050C2);
if (si->ps.card_arch < NV30A)
ACCW(BPIXEL, 0x00556555); /* set depth 0-5: 4 bits per color */
/* set depth 0-5: $5 = R5G6B5, $6 = Y16 */
ACCW(BPIXEL, 0x00556555);
else
ACCW(BPIXEL, 0x000000a5); /* set depth 0-1: 5 bits per color */
/* set depth 0-1: $5 = R5G6B5, $a = X1A7R8G8B8_O1A7R8G8B8 */
ACCW(BPIXEL, 0x000000a5);
if (si->ps.card_arch == NV04A)
ACCW(STRD_FMT, 0x0c0b0b0b);
else
@ -470,9 +485,11 @@ status_t nv_acc_init()
/* acc engine */
ACCW(FORMATS, 0x000070e5);
if (si->ps.card_arch < NV30A)
ACCW(BPIXEL, 0x0077d777); /* set depth 0-5: 4 bits per color */
/* set depth 0-5: $7 = X8R8G8B8_Z8R8G8B8, $d = Y32 */
ACCW(BPIXEL, 0x0077d777);
else
ACCW(BPIXEL, 0x000000e7); /* set depth 0-1: 5 bits per color */
/* set depth 0-1: $7 = X8R8G8B8_Z8R8G8B8, $e = V8YB8U8YA8 */
ACCW(BPIXEL, 0x000000e7);
ACCW(STRD_FMT, 0x0e0d0d0d);
/* PRAMIN */
ACCW(PR_CTX1_0, 0x00000e02); /* format is X8RGB24, LSB mono */
@ -675,11 +692,11 @@ status_t nv_acc_init()
ACCW(FIFO_00800000, 0x80000000); /* Raster OPeration */
ACCW(FIFO_00802000, 0x80000001); /* Clip */
ACCW(FIFO_00804000, 0x80000002); /* Pattern */
ACCW(FIFO_00806000, 0x80000010); /* Pixmap (not used) */
ACCW(FIFO_00806000, 0x80000010); /* Pixmap (not used or 3D only?) */
ACCW(FIFO_00808000, 0x80000011); /* Blit */
ACCW(FIFO_0080a000, 0x80000012); /* Bitmap */
ACCW(FIFO_0080c000, 0x80000016); /* Line (not used) */
ACCW(FIFO_0080e000, 0x80000014); /* ??? (not used) */
ACCW(FIFO_0080c000, 0x80000016); /* Line (not used or 3D only?) */
ACCW(FIFO_0080e000, 0x80000014); /* Textured Triangle (3D only) */
/* do first actual acceleration engine command:
* setup clipping region (workspace size) to 32768 x 32768 pixels: