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tgsi: handle texel swizzles correctly for d3d10-style sample opcodes

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Same as for gallivm (though these don't quite work correctly in softpipe,
so untested).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Roland Scheidegger 2013-07-26 21:39:27 +02:00
parent abcc40e7f0
commit 47e528b740
1 changed files with 35 additions and 5 deletions
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40
src/gallium/auxiliary/tgsi/tgsi_exec.c
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@ -2041,9 +2041,25 @@ exec_txf(struct tgsi_exec_machine *mach,
r[3].f[j] = rgba[3][j];
}
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);
if (inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I) {
unsigned char swizzles[4];
swizzles[0] = inst->Src[1].Register.SwizzleX;
swizzles[1] = inst->Src[1].Register.SwizzleY;
swizzles[2] = inst->Src[1].Register.SwizzleZ;
swizzles[3] = inst->Src[1].Register.SwizzleW;
for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
if (inst->Dst[0].Register.WriteMask & (1 << chan)) {
store_dest(mach, &r[swizzles[chan]],
&inst->Dst[0], inst, chan, TGSI_EXEC_DATA_FLOAT);
}
}
}
else {
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);
}
}
}
}
@ -2087,6 +2103,7 @@ exec_sample(struct tgsi_exec_machine *mach,
const union tgsi_exec_channel *lod = &ZeroVec;
enum tgsi_sampler_control control = tgsi_sampler_lod_none;
uint chan;
unsigned char swizzles[4];
int8_t offsets[3];
/* always fetch all 3 offsets, overkill but keeps code simple */
@ -2193,9 +2210,15 @@ exec_sample(struct tgsi_exec_machine *mach,
assert(0);
}
swizzles[0] = inst->Src[1].Register.SwizzleX;
swizzles[1] = inst->Src[1].Register.SwizzleY;
swizzles[2] = inst->Src[1].Register.SwizzleZ;
swizzles[3] = inst->Src[1].Register.SwizzleW;
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);
store_dest(mach, &r[swizzles[chan]],
&inst->Dst[0], inst, chan, TGSI_EXEC_DATA_FLOAT);
}
}
}
@ -2209,6 +2232,7 @@ exec_sample_d(struct tgsi_exec_machine *mach,
union tgsi_exec_channel r[4];
float derivs[3][2][TGSI_QUAD_SIZE];
uint chan;
unsigned char swizzles[4];
int8_t offsets[3];
/* always fetch all 3 offsets, overkill but keeps code simple */
@ -2268,9 +2292,15 @@ exec_sample_d(struct tgsi_exec_machine *mach,
assert(0);
}
swizzles[0] = inst->Src[1].Register.SwizzleX;
swizzles[1] = inst->Src[1].Register.SwizzleY;
swizzles[2] = inst->Src[1].Register.SwizzleZ;
swizzles[3] = inst->Src[1].Register.SwizzleW;
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);
store_dest(mach, &r[swizzles[chan]],
&inst->Dst[0], inst, chan, TGSI_EXEC_DATA_FLOAT);
}
}
}