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gallium/tgsi_exec: Refactor to fix CS local memory overflow checks.

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It was OK because right now we only execute in the first channel of the
CS, but if you wanted to extend that then you'd need to check each
channel.  We already had what we needed for SSBOs, so just reuse it.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8196>
This commit is contained in:
Eric Anholt 2021-01-05 11:12:11 -08:00
parent 671263b5c7
commit 911bb08314
1 changed files with 19 additions and 39 deletions
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58
src/gallium/auxiliary/tgsi/tgsi_exec.c
View file

@ -3897,12 +3897,26 @@ exec_load_img(struct tgsi_exec_machine *mach,
}
static void
exec_load_buf(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
exec_load_membuf(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
{
uint32_t unit = fetch_sampler_unit(mach, inst, 0);
uint32_t size;
char *ptr = mach->Buffer->lookup(mach->Buffer, unit, &size);
char *ptr;
switch (inst->Src[0].Register.File) {
case TGSI_FILE_MEMORY:
ptr = mach->LocalMem;
size = mach->LocalMemSize;
break;
case TGSI_FILE_BUFFER:
ptr = mach->Buffer->lookup(mach->Buffer, unit, &size);
break;
default:
unreachable("unsupported TGSI_OPCODE_LOAD file");
}
union tgsi_exec_channel offset;
IFETCH(&offset, 1, TGSI_CHAN_X);
@ -3926,48 +3940,14 @@ exec_load_buf(struct tgsi_exec_machine *mach,
}
}
static void
exec_load_mem(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
{
union tgsi_exec_channel r[4];
uint chan;
char *ptr = mach->LocalMem;
uint32_t offset;
int j;
IFETCH(&r[0], 1, TGSI_CHAN_X);
if (r[0].u[0] >= mach->LocalMemSize)
return;
offset = r[0].u[0];
ptr += offset;
for (j = 0; j < TGSI_QUAD_SIZE; j++) {
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
memcpy(&r[chan].u[j], ptr + (4 * chan), 4);
}
}
}
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
store_dest(mach, &r[chan], &inst->Dst[0], inst, chan, TGSI_EXEC_DATA_FLOAT);
}
}
}
static void
exec_load(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
{
if (inst->Src[0].Register.File == TGSI_FILE_IMAGE)
exec_load_img(mach, inst);
else if (inst->Src[0].Register.File == TGSI_FILE_BUFFER)
exec_load_buf(mach, inst);
else if (inst->Src[0].Register.File == TGSI_FILE_MEMORY)
exec_load_mem(mach, inst);
else
exec_load_membuf(mach, inst);
}
static uint