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nv50: note some things discovered during renouveau session

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This commit is contained in:
Ben Skeggs 2008-06-09 16:26:51 +10:00
parent 713ef6ccd2
commit 6d0f7ea954
1 changed files with 21 additions and 2 deletions
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23
src/gallium/drivers/nv50/nv50_program.c
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@ -28,10 +28,29 @@
* FUCK! watch dst==src vectors, can overwrite components that are needed.
* ie. SUB R0, R0.yzxw, R0
*
* MOV dst, -src
* "delta" tmp, -src (0xa0000204,0xe4004780 - delta r0, -r0)
* mov dst, tmp
*
* Things to check with renouveau:
* SGE/SLT with needed src0/1 swap
* FP attr/result assignment - how?
* FP/VP constbuf usage
* attrib
* - 0x16bc maps vp output onto fp hpos
* - 0x16c0 maps vp output onto fp col0
* result
* - colr always 0-3
* - depr always 4
* 0x16bc->0x16e8 --> some binding between vp/fp regs
* 0x16b8 --> VP output count
*
* 0x1298 --> "MOV rcol.x, fcol.y" "MOV depr, fcol.y" = 0x00000005
* "MOV rcol.x, fcol.y" = 0x00000004
* 0x19a8 --> as above but 0x00000100 and 0x00000000
* - 0x00100000 used when KIL used
* 0x196c --> as above but 0x00000011 and 0x00000000
*
* 0x1988 --> 0xXXNNNNNN
* - XX == FP high something
*/
struct nv50_reg {
enum {