diff options
| author | Zack Rusin <[email protected]> | 2013-07-11 12:16:06 -0400 |
|---|---|---|
| committer | Zack Rusin <[email protected]> | 2013-07-11 20:19:04 -0400 |
| commit | 00cd455bd50c6b16b2f72a6d2726de3d3818c7f5 (patch) | |
| tree | 2b13c67bd84020a1bad285c3678b497a571ae1a4 /src/mesa/state_tracker | |
| parent | a171812d27afb1a52c5d81deaa6027f30bc102e8 (diff) | |
gallium: fixup definitions of the rsq and sqrt
GLSL spec says that rsq is undefined for src<=0, but the D3D10
spec says it needs to be a NaN, so lets stop taking an absolute
value of the source which completely breaks that behavior. For
the gl program we can simply insert an extra abs instrunction
which produces the desired behavior there.
Signed-off-by: Zack Rusin <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Diffstat (limited to 'src/mesa/state_tracker')
| -rw-r--r-- | src/mesa/state_tracker/st_mesa_to_tgsi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c index 7f306973f3d..67c6f53f638 100644 --- a/src/mesa/state_tracker/st_mesa_to_tgsi.c +++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c @@ -615,8 +615,6 @@ translate_opcode( unsigned op ) return TGSI_OPCODE_RCP; case OPCODE_RET: return TGSI_OPCODE_RET; - case OPCODE_RSQ: - return TGSI_OPCODE_RSQ; case OPCODE_SCS: return TGSI_OPCODE_SCS; case OPCODE_SEQ: @@ -756,6 +754,10 @@ compile_instruction( emit_ddy( t, dst[0], &inst->SrcReg[0] ); break; + case OPCODE_RSQ: + ureg_RSQ( ureg, dst[0], ureg_abs(src[0]) ); + break; + default: ureg_insn( ureg, translate_opcode( inst->Opcode ), |