From 56c476395ffdff2cfbc0adb9b87e5b308ee3066a Mon Sep 17 00:00:00 2001 From: Jonathan White Date: Mon, 22 Sep 2008 10:54:50 -0600 Subject: [PATCH] cell: Added DPH instruction and verified against softpipe. --- src/gallium/drivers/cell/ppu/cell_gen_fp.c | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index 1bc803d5908..f4e651c8ebf 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -633,6 +633,45 @@ emit_DP4(struct codegen *gen, const struct tgsi_full_instruction *inst) return true; } +/** + * Emit homogeneous dot product. See emit_ADD for comments. + */ +static boolean +emit_DPH(struct codegen *gen, const struct tgsi_full_instruction *inst) +{ + int ch; + spe_comment(gen->f, -4, "DPH:"); + + int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]); + int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]); + int d_reg = get_dst_reg(gen, CHAN_X, &inst->FullDstRegisters[0]); + /* d = x * x */ + spe_fm(gen->f, d_reg, s1_reg, s2_reg); + + s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]); + s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]); + /* d = y * y + d */ + spe_fma(gen->f, d_reg, s1_reg, s2_reg, d_reg); + + s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]); + s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]); + /* d = z * z + d */ + spe_fma(gen->f, d_reg, s1_reg, s2_reg, d_reg); + + s2_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[1]); + /* d = w + d */ + spe_fa(gen->f, d_reg, s2_reg, d_reg); + + for (ch = 0; ch < 4; ch++) { + if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); + } + } + + free_itemps(gen); + return true; +} + /** * Emit set-if-greater-than. * Note that the SPE fcgt instruction produces 0x0 and 0xffffffff as @@ -1124,6 +1163,8 @@ emit_instruction(struct codegen *gen, return emit_DP3(gen, inst); case TGSI_OPCODE_DP4: return emit_DP4(gen, inst); + case TGSI_OPCODE_DPH: + return emit_DPH(gen, inst); case TGSI_OPCODE_RCP: return emit_RCP(gen, inst); case TGSI_OPCODE_RSQ: -- 2.30.2