diff options
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_exec.c | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c index f164fce5c0c..b2dc24c2fea 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c @@ -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: |