tgsi: add support for flt64 constants

These act like flt32 except they take up two slots, and you
can only add 2 x flt64 constants in one slot.

The main reason they are different is we don't want to match half a flt64
constants against a flt32 constant in the matching code, we need to make
sure we treat both parts of the flt64 as an single structure.

Cleaned up printing/parsing by Ilia Mirkin <[email protected]>

Reviewed-by: Ilia Mirkin <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c
index f965b0130e0..5069d13a1db 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_text.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_text.c
@@ -232,6 +232,24 @@ static boolean parse_float( const char **pcur, float *val )
    return TRUE;
 }
 
+static boolean parse_double( const char **pcur, uint32_t *val0, uint32_t *val1)
+{
+   const char *cur = *pcur;
+   union {
+      double dval;
+      uint32_t uval[2];
+   } v;
+
+   v.dval = strtod(cur, pcur);
+   if (*pcur == cur)
+      return FALSE;
+
+   *val0 = v.uval[0];
+   *val1 = v.uval[1];
+
+   return TRUE;
+}
+
 struct translate_ctx
 {
    const char *text;
@@ -1104,6 +1122,10 @@ static boolean parse_immediate_data(struct translate_ctx *ctx, unsigned type,
       }
 
       switch (type) {
+      case TGSI_IMM_FLOAT64:
+         ret = parse_double(&ctx->cur, &values[i].Uint, &values[i+1].Uint);
+         i++;
+         break;
       case TGSI_IMM_FLOAT32:
          ret = parse_float(&ctx->cur, &values[i].Float);
          break;