KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tgsi: add tgsi_exec support for new bit manipulation opcodes 

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Ilia Mirkin 2014-04-25 01:44:19 -04:00
parent ab4927f3e0
commit 1db993f2fe
1 changed files with 172 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

172
src/gallium/auxiliary/tgsi/tgsi_exec.c
View File

@ -2603,6 +2603,40 @@ exec_vector_trinary(struct tgsi_exec_machine *mach,
}
}
typedef void (* micro_quaternary_op)(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src0,
const union tgsi_exec_channel *src1,
const union tgsi_exec_channel *src2,
const union tgsi_exec_channel *src3);
static void
exec_vector_quaternary(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst,
micro_quaternary_op op,
enum tgsi_exec_datatype dst_datatype,
enum tgsi_exec_datatype src_datatype)
{
unsigned int chan;
struct tgsi_exec_vector dst;
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
union tgsi_exec_channel src[4];
fetch_source(mach, &src[0], &inst->Src[0], chan, src_datatype);
fetch_source(mach, &src[1], &inst->Src[1], chan, src_datatype);
fetch_source(mach, &src[2], &inst->Src[2], chan, src_datatype);
fetch_source(mach, &src[3], &inst->Src[3], chan, src_datatype);
op(&dst.xyzw[chan], &src[0], &src[1], &src[2], &src[3]);
}
}
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
store_dest(mach, &dst.xyzw[chan], &inst->Dst[0], inst, chan, dst_datatype);
}
}
}
static void
exec_dp3(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
@ -3570,6 +3604,119 @@ micro_ucmp(union tgsi_exec_channel *dst,
dst->u[3] = src0->u[3] ? src1->u[3] : src2->u[3];
}
/**
* Signed bitfield extract (i.e. sign-extend the extracted bits)
*/
static void
micro_ibfe(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src0,
const union tgsi_exec_channel *src1,
const union tgsi_exec_channel *src2)
{
int i;
for (i = 0; i < 4; i++) {
int width = src2->i[i] & 0x1f;
int offset = src1->i[i] & 0x1f;
if (width == 0)
dst->i[i] = 0;
else if (width + offset < 32)
dst->i[i] = (src0->i[i] << (32 - width - offset)) >> (32 - width);
else
dst->i[i] = src0->i[i] >> offset;
}
}
/**
* Unsigned bitfield extract
*/
static void
micro_ubfe(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src0,
const union tgsi_exec_channel *src1,
const union tgsi_exec_channel *src2)
{
int i;
for (i = 0; i < 4; i++) {
int width = src2->u[i] & 0x1f;
int offset = src1->u[i] & 0x1f;
if (width == 0)
dst->u[i] = 0;
else if (width + offset < 32)
dst->u[i] = (src0->u[i] << (32 - width - offset)) >> (32 - width);
else
dst->u[i] = src0->u[i] >> offset;
}
}
/**
* Bitfield insert: copy low bits from src1 into a region of src0.
*/
static void
micro_bfi(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src0,
const union tgsi_exec_channel *src1,
const union tgsi_exec_channel *src2,
const union tgsi_exec_channel *src3)
{
int i;
for (i = 0; i < 4; i++) {
int width = src3->u[i] & 0x1f;
int offset = src2->u[i] & 0x1f;
int bitmask = ((1 << width) - 1) << offset;
dst->u[i] = ((src1->u[i] << offset) & bitmask) | (src0->u[i] & ~bitmask);
}
}
static void
micro_brev(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src)
{
dst->u[0] = util_bitreverse(src->u[0]);
dst->u[1] = util_bitreverse(src->u[1]);
dst->u[2] = util_bitreverse(src->u[2]);
dst->u[3] = util_bitreverse(src->u[3]);
}
static void
micro_popc(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src)
{
dst->u[0] = util_bitcount(src->u[0]);
dst->u[1] = util_bitcount(src->u[1]);
dst->u[2] = util_bitcount(src->u[2]);
dst->u[3] = util_bitcount(src->u[3]);
}
static void
micro_lsb(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src)
{
dst->i[0] = ffs(src->u[0]) - 1;
dst->i[1] = ffs(src->u[1]) - 1;
dst->i[2] = ffs(src->u[2]) - 1;
dst->i[3] = ffs(src->u[3]) - 1;
}
static void
micro_imsb(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src)
{
dst->i[0] = util_last_bit_signed(src->i[0]) - 1;
dst->i[1] = util_last_bit_signed(src->i[1]) - 1;
dst->i[2] = util_last_bit_signed(src->i[2]) - 1;
dst->i[3] = util_last_bit_signed(src->i[3]) - 1;
}
static void
micro_umsb(union tgsi_exec_channel *dst,
const union tgsi_exec_channel *src)
{
dst->i[0] = util_last_bit(src->u[0]) - 1;
dst->i[1] = util_last_bit(src->u[1]) - 1;
dst->i[2] = util_last_bit(src->u[2]) - 1;
dst->i[3] = util_last_bit(src->u[3]) - 1;
}
static void
exec_instruction(
struct tgsi_exec_machine *mach,
@ -4417,6 +4564,31 @@ exec_instruction(
/* src[2] = sampler unit */
exec_tex(mach, inst, TEX_MODIFIER_EXPLICIT_LOD, 2);
break;
case TGSI_OPCODE_IBFE:
exec_vector_trinary(mach, inst, micro_ibfe, TGSI_EXEC_DATA_INT, TGSI_EXEC_DATA_INT);
break;
case TGSI_OPCODE_UBFE:
exec_vector_trinary(mach, inst, micro_ubfe, TGSI_EXEC_DATA_UINT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_BFI:
exec_vector_quaternary(mach, inst, micro_bfi, TGSI_EXEC_DATA_UINT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_BREV:
exec_vector_unary(mach, inst, micro_brev, TGSI_EXEC_DATA_UINT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_POPC:
exec_vector_unary(mach, inst, micro_popc, TGSI_EXEC_DATA_UINT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_LSB:
exec_vector_unary(mach, inst, micro_lsb, TGSI_EXEC_DATA_INT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_IMSB:
exec_vector_unary(mach, inst, micro_imsb, TGSI_EXEC_DATA_INT, TGSI_EXEC_DATA_INT);
break;
case TGSI_OPCODE_UMSB:
exec_vector_unary(mach, inst, micro_umsb, TGSI_EXEC_DATA_INT, TGSI_EXEC_DATA_UINT);
break;
default:
assert( 0 );
}