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tgsi: Fake TXD implementation in exec.

This commit is contained in:
Michal Krol 2009-11-19 13:05:58 +01:00
parent f359ac5486
commit cde758a2b5
1 changed files with 59 additions and 1 deletions
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60
src/gallium/auxiliary/tgsi/tgsi_exec.c
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@ -1698,6 +1698,64 @@ exec_tex(struct tgsi_exec_machine *mach,
}
}
static void
exec_txd(struct tgsi_exec_machine *mach,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->FullSrcRegisters[3].SrcRegister.Index;
union tgsi_exec_channel r[4];
uint chan_index;
/*
* XXX: This is fake TXD -- the derivatives are not taken into account, yet.
*/
switch (inst->InstructionExtTexture.Texture) {
case TGSI_TEXTURE_1D:
case TGSI_TEXTURE_SHADOW1D:
FETCH(&r[0], 0, CHAN_X);
fetch_texel(mach->Samplers[unit],
&r[0], &ZeroVec, &ZeroVec, 0.0f, /* S, T, P, BIAS */
&r[0], &r[1], &r[2], &r[3]); /* R, G, B, A */
break;
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
case TGSI_TEXTURE_SHADOW2D:
case TGSI_TEXTURE_SHADOWRECT:
FETCH(&r[0], 0, CHAN_X);
FETCH(&r[1], 0, CHAN_Y);
FETCH(&r[2], 0, CHAN_Z);
fetch_texel(mach->Samplers[unit],
&r[0], &r[1], &r[2], 0.0f, /* inputs */
&r[0], &r[1], &r[2], &r[3]); /* outputs */
break;
case TGSI_TEXTURE_3D:
case TGSI_TEXTURE_CUBE:
FETCH(&r[0], 0, CHAN_X);
FETCH(&r[1], 0, CHAN_Y);
FETCH(&r[2], 0, CHAN_Z);
fetch_texel(mach->Samplers[unit],
&r[0], &r[1], &r[2], 0.0f,
&r[0], &r[1], &r[2], &r[3]);
break;
default:
assert(0);
}
FOR_EACH_ENABLED_CHANNEL(*inst, chan_index) {
STORE(&r[chan_index], 0, chan_index);
}
}
/**
* Evaluate a constant-valued coefficient at the position of the
@ -2507,7 +2565,7 @@ exec_instruction(
/* src[1] = d[strq]/dx */
/* src[2] = d[strq]/dy */
/* src[3] = sampler unit */
assert (0);
exec_txd(mach, inst);
break;
case TGSI_OPCODE_TXL: