diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-11-11 09:19:18 -0700 |
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committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-11-11 14:27:52 -0700 |
commit | 7f3d45758ccbbcff6428d57d26794960e3e9532c (patch) | |
tree | b3fe5316a22bc644aacd568685fa5c1897981964 /src/gallium/drivers | |
parent | 90027f85786406133a5180998a75fb612b6a221e (diff) |
cell: implement NRM3 opcode
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index 5c41b264ac..96a1743fc1 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -880,6 +880,52 @@ emit_DPH(struct codegen *gen, const struct tgsi_full_instruction *inst) } /** + * Emit 3-component vector normalize. + */ +static boolean +emit_NRM3(struct codegen *gen, const struct tgsi_full_instruction *inst) +{ + int ch; + int src_reg[3]; + int t0_reg = get_itemp(gen), t1_reg = get_itemp(gen); + + spe_comment(gen->f, -4, "NRM3:"); + + src_reg[0] = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]); + src_reg[1] = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]); + src_reg[2] = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]); + + /* t0 = x * x */ + spe_fm(gen->f, t0_reg, src_reg[0], src_reg[0]); + + /* t1 = y * y */ + spe_fm(gen->f, t1_reg, src_reg[1], src_reg[1]); + + /* t0 = z * z + t0 */ + spe_fma(gen->f, t0_reg, src_reg[2], src_reg[2], t0_reg); + + /* t0 = t0 + t1 */ + spe_fa(gen->f, t0_reg, t0_reg, t1_reg); + + /* t1 = 1.0 / sqrt(t0) */ + spe_frsqest(gen->f, t1_reg, t0_reg); + spe_fi(gen->f, t1_reg, t0_reg, t1_reg); + + for (ch = 0; ch < 3; ch++) { /* NOTE: omit W channel */ + if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + /* dst = src[ch] * t1 */ + spe_fm(gen->f, d_reg, src_reg[ch], t1_reg); + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); + } + } + + free_itemps(gen); + return true; +} + + +/** * Emit cross product. See emit_ADD for comments. */ static boolean @@ -1769,6 +1815,8 @@ emit_instruction(struct codegen *gen, return emit_DP4(gen, inst); case TGSI_OPCODE_DPH: return emit_DPH(gen, inst); + case TGSI_OPCODE_NRM: + return emit_NRM3(gen, inst); case TGSI_OPCODE_XPD: return emit_XPD(gen, inst); case TGSI_OPCODE_RCP: |