Mesa (gallium-double-opcodes): tgsi: implement DFRACEXP

[Michał Król]

Module: Mesa
Branch: gallium-double-opcodes
Commit: e2e4e4309494d7727485652d90fc91ad27a1655a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e2e4e4309494d7727485652d90fc91ad27a1655a

Author: Igor Oliveira <igor.oliveira at openbossa.org>
Date:   Tue Jan 19 19:21:47 2010 -0400

tgsi: implement DFRACEXP

---

 src/gallium/auxiliary/tgsi/tgsi_exec.c |   40 ++++++++++++++++++++++++++++++++
 src/gallium/auxiliary/tgsi/tgsi_info.c |    3 +-
 2 files changed, 42 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index efb9ea1..09c4d3a 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -310,6 +310,17 @@ micro_dldexp(union tgsi_double_channel *dst,
 }
 
 static void
+micro_dfracexp(union tgsi_double_channel *dst,
+               union tgsi_exec_channel *dst_exp,
+               const union tgsi_double_channel *src)
+{
+   dst->d[0] = frexp(src->d[0], &dst_exp->i[0]);
+   dst->d[1] = frexp(src->d[1], &dst_exp->i[1]);
+   dst->d[2] = frexp(src->d[2], &dst_exp->i[2]);
+   dst->d[3] = frexp(src->d[3], &dst_exp->i[3]);
+}
+
+static void
 micro_exp2(union tgsi_exec_channel *dst,
            const union tgsi_exec_channel *src)
 {
@@ -2453,6 +2464,31 @@ exec_d2f(struct tgsi_exec_machine *mach,
 }
 
 static void
+exec_dfracexp(struct tgsi_exec_machine *mach,
+              const struct tgsi_full_instruction *inst)
+{
+   union tgsi_double_channel src;
+   union tgsi_double_channel dst;
+   union tgsi_exec_channel dst_exp;
+
+   if (((inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_XY) == TGSI_WRITEMASK_XY) &&
+       ((inst->Dst[1].Register.WriteMask & TGSI_WRITEMASK_X) == TGSI_WRITEMASK_X)) {
+      fetch_double_channel(mach, &src, &inst->Src[0], CHAN_X, CHAN_Y);
+      micro_dfracexp(&dst, &dst_exp, &src);
+      store_double_channel(mach, &dst, &inst->Dst[0], inst, CHAN_X, CHAN_Y);
+      store_dest(mach, &dst_exp, &inst->Dst[1], inst, CHAN_X, TGSI_EXEC_DATA_INT);
+   }
+   if (((inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_ZW) == TGSI_WRITEMASK_ZW) &&
+       ((inst->Dst[1].Register.WriteMask & TGSI_WRITEMASK_Y) == TGSI_WRITEMASK_Y)) {
+      fetch_double_channel(mach, &src, &inst->Src[0], CHAN_Z, CHAN_W);
+      micro_dfracexp(&dst, &dst_exp, &src);
+      store_double_channel(mach, &dst, &inst->Dst[0], inst, CHAN_Z, CHAN_W);
+      store_dest(mach, &dst_exp, &inst->Dst[1], inst, CHAN_Y, TGSI_EXEC_DATA_INT);
+   }
+}
+
+
+static void
 micro_i2f(union tgsi_exec_channel *dst,
           const union tgsi_exec_channel *src)
 {
@@ -3935,6 +3971,10 @@ exec_instruction(
       exec_double_binary(mach, inst, micro_dldexp);
       break;
 
+   case TGSI_OPCODE_DFRACEXP:
+      exec_dfracexp(mach, inst);
+      break;
+
    default:
       printf("%d", inst->Instruction.Opcode);
       assert( 0 );
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index 8340b07..cc8d6e5 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -192,7 +192,8 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 1, 1, 0, 0 ,0, 0, "DSQRT", TGSI_OPCODE_DSQRT },
    { 1, 3, 0, 0 ,0, 0, "DMAD", TGSI_OPCODE_DMAD },
    { 1, 1, 0, 0, 0, 0, "DFRAC", TGSI_OPCODE_DFRAC},
-   { 1, 2, 0, 0, 0, 0, "DLDEXP", TGSI_OPCODE_DLDEXP}
+   { 1, 2, 0, 0, 0, 0, "DLDEXP", TGSI_OPCODE_DLDEXP},
+   { 2, 1, 0, 0, 0, 0, "DFRACEXP", TGSI_OPCODE_DFRACEXP}
 };
 
 const struct tgsi_opcode_info *