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i965: implement OPCODE_TRUNC (round toward zero) on vertex path.

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Also, fix some RNDD vs. RNDZ confusion elsewhere.
This commit is contained in:
Brian Paul
2009-01-05 10:09:28 -07:00
parent 4469355df2
commit 0d797365de
4 changed files with 7 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_eu.h
+1
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@@ -753,6 +753,7 @@ ALU2(ADD)
ALU2(MUL)
ALU1(FRC)
ALU1(RNDD)
ALU1(RNDZ)
ALU2(MAC)
ALU2(MACH)
ALU1(LZD)
src/mesa/drivers/dri/i965/brw_eu_emit.c
+1
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@@ -439,6 +439,7 @@ ALU2(ADD)
ALU2(MUL)
ALU1(FRC)
ALU1(RNDD)
ALU1(RNDZ)
ALU2(MAC)
ALU2(MACH)
ALU1(LZD)
src/mesa/drivers/dri/i965/brw_vs_emit.c
+4
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@@ -1133,6 +1133,10 @@ void brw_vs_emit(struct brw_vs_compile *c )
*/
emit_swz(c, dst, inst->SrcReg[0] );
break;
case OPCODE_TRUNC:
/* round toward zero */
brw_RNDZ(p, dst, args[0]);
break;
case OPCODE_XPD:
emit_xpd(p, dst, args[0], args[1]);
break;
src/mesa/drivers/dri/i965/brw_wm_glsl.c
+1 -1
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@@ -267,7 +267,7 @@ static void emit_trunc( struct brw_wm_compile *c,
struct brw_reg src, dst;
dst = get_dst_reg(c, inst, i, 1) ;
src = get_src_reg(c, &inst->SrcReg[0], i, 1);
brw_RNDD(p, dst, src);
brw_RNDZ(p, dst, src);
}
}
brw_set_saturate(p, 0);