Mesa (master): nvc0: fix emit_cvt for ceil, floor and trunc

[Christoph Bumiller]

Module: Mesa
Branch: master
Commit: 835c4ea1053730c8eea98337c9da1b14fcff6b5e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=835c4ea1053730c8eea98337c9da1b14fcff6b5e

Author: Christoph Bumiller <e0425955 at student.tuwien.ac.at>
Date:   Sun Jan 23 13:09:10 2011 +0100

nvc0: fix emit_cvt for ceil, floor and trunc

---

 src/gallium/drivers/nvc0/nvc0_pc_emit.c  |   33 +++++++++++++++++++----------
 src/gallium/drivers/nvc0/nvc0_pc_print.c |    2 +-
 2 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/src/gallium/drivers/nvc0/nvc0_pc_emit.c b/src/gallium/drivers/nvc0/nvc0_pc_emit.c
index e4b243b..88a59cf 100644
--- a/src/gallium/drivers/nvc0/nvc0_pc_emit.c
+++ b/src/gallium/drivers/nvc0/nvc0_pc_emit.c
@@ -629,25 +629,28 @@ emit_slct(struct nv_pc *pc, struct nv_instruction *i)
 static void
 emit_cvt(struct nv_pc *pc, struct nv_instruction *i)
 {
+   uint32_t rint;
+
    pc->emit[0] = 0x00000004;
    pc->emit[1] = 0x10000000;
 
-   if (i->opcode != NV_OP_CVT)
+   /* if no type conversion specified, get type from opcode */
+   if (i->opcode != NV_OP_CVT && i->ext.cvt.d == i->ext.cvt.s)
       i->ext.cvt.d = i->ext.cvt.s = NV_OPTYPE(i->opcode);
 
    switch (i->ext.cvt.d) {
    case NV_TYPE_F32:
       switch (i->ext.cvt.s) {
       case NV_TYPE_F32: pc->emit[1] = 0x10000000; break;
-      case NV_TYPE_S32: pc->emit[0] |= 0x200;
+      case NV_TYPE_S32: pc->emit[0] |= 0x200; /* fall through */
       case NV_TYPE_U32: pc->emit[1] = 0x18000000; break;
       }
       break;
-   case NV_TYPE_S32: pc->emit[0] |= 0x80;
+   case NV_TYPE_S32: pc->emit[0] |= 0x80; /* fall through */
    case NV_TYPE_U32:
       switch (i->ext.cvt.s) {
       case NV_TYPE_F32: pc->emit[1] = 0x14000000; break;
-      case NV_TYPE_S32: pc->emit[0] |= 0x200;
+      case NV_TYPE_S32: pc->emit[0] |= 0x200; /* fall through */
       case NV_TYPE_U32: pc->emit[1] = 0x1c000000; break;
       }
       break;
@@ -656,14 +659,20 @@ emit_cvt(struct nv_pc *pc, struct nv_instruction *i)
       break;
    }
 
-   if (i->opcode == NV_OP_FLOOR)
-      pc->emit[1] |= 0x00020000;
-   else
-   if (i->opcode == NV_OP_CEIL)
-      pc->emit[1] |= 0x00040000;
-   else
-   if (i->opcode == NV_OP_TRUNC)
-      pc->emit[1] |= 0x00060000;
+   rint = (i->ext.cvt.d == NV_TYPE_F32) ? 1 << 7 : 0;
+
+   if (i->opcode == NV_OP_FLOOR) {
+      pc->emit[0] |= rint;
+      pc->emit[1] |= 2 << 16;
+   } else
+   if (i->opcode == NV_OP_CEIL) {
+      pc->emit[0] |= rint;
+      pc->emit[1] |= 4 << 16;
+   } else
+   if (i->opcode == NV_OP_TRUNC) {
+      pc->emit[0] |= rint;
+      pc->emit[1] |= 6 << 16;
+   }
 
    if (i->saturate || i->opcode == NV_OP_SAT)
       pc->emit[0] |= 0x20;
diff --git a/src/gallium/drivers/nvc0/nvc0_pc_print.c b/src/gallium/drivers/nvc0/nvc0_pc_print.c
index 6c71abe..76dd0f5 100644
--- a/src/gallium/drivers/nvc0/nvc0_pc_print.c
+++ b/src/gallium/drivers/nvc0/nvc0_pc_print.c
@@ -302,7 +302,7 @@ struct nv_op_info nvc0_op_info_table[NV_OP_COUNT + 1] =
 
    { NV_OP_CEIL,  "ceil",  NV_TYPE_F32, NV_MOD_SGN, 0, 0, 0, 1, 0, 0, 0 },
    { NV_OP_FLOOR, "floor", NV_TYPE_F32, NV_MOD_SGN, 0, 0, 0, 1, 0, 0, 0 },
-   { NV_OP_TRUNC, "floor", NV_TYPE_F32, NV_MOD_SGN, 0, 0, 0, 1, 0, 0, 0 },
+   { NV_OP_TRUNC, "trunc", NV_TYPE_F32, NV_MOD_SGN, 0, 0, 0, 1, 0, 0, 0 },
 
    { NV_OP_SAD, "sad", NV_TYPE_S32, 0, 0, 1, 0, 1, 0, 0, 0 },