nv50: note some things discovered during renouveau session

diff --git a/src/gallium/drivers/nv50/nv50_program.c b/src/gallium/drivers/nv50/nv50_program.c
index 592435585d9667d2f9fb539b69758127c29a7ed9..0274545131e3a83229272f130a7beebddc2ff834 100644 (file)
--- a/src/gallium/drivers/nv50/nv50_program.c
+++ b/src/gallium/drivers/nv50/nv50_program.c
@@ -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 {