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gallium: Add TGSI_OPCODE_F2U to gallivm backend. 

Note: for the moment TGSI_OPCODE_F2U is implemented using
lp_build_itrunc() (the same function used to implement
TGSI_OPCODE_F2I).  In the long run, we should create an
lp_build_utrunc() function to do the proper conversion.  But this
should allow us to limp along with mostly correct behaviour for now.
This commit is contained in:
Paul Berry 2012-06-13 15:46:27 -07:00
parent 1be7661110
commit 9d57d483cb
1 changed files with 13 additions and 0 deletions
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13
src/gallium/auxiliary/gallivm/lp_bld_tgsi_action.c
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@ -984,6 +984,18 @@ f2i_emit_cpu(
emit_data->args[0]);
}
/* TGSI_OPCODE_F2U (CPU Only) */
static void
f2u_emit_cpu(
const struct lp_build_tgsi_action * action,
struct lp_build_tgsi_context * bld_base,
struct lp_build_emit_data * emit_data)
{
/* FIXME: implement and use lp_build_utrunc() */
emit_data->output[emit_data->chan] = lp_build_itrunc(&bld_base->base,
emit_data->args[0]);
}
/* TGSI_OPCODE_FLR (CPU Only) */
static void
@ -1561,6 +1573,7 @@ lp_set_default_actions_cpu(
bld_base->op_actions[TGSI_OPCODE_EX2].emit = ex2_emit_cpu;
bld_base->op_actions[TGSI_OPCODE_EXP].emit = exp_emit_cpu;
bld_base->op_actions[TGSI_OPCODE_F2I].emit = f2i_emit_cpu;
bld_base->op_actions[TGSI_OPCODE_F2U].emit = f2u_emit_cpu;
bld_base->op_actions[TGSI_OPCODE_FLR].emit = flr_emit_cpu;
bld_base->op_actions[TGSI_OPCODE_I2F].emit = i2f_emit_cpu;