diff options
| -rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index a84b565e5c3..d2376aa0c22 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -856,7 +856,10 @@ emit_CMP(struct codegen *gen, const struct tgsi_full_instruction *inst) } /** - * Emit floor. See emit_SGT for comments. + * Emit floor. + * If negative int subtract one + * Convert float to signed int + * Convert signed int to float */ static boolean emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst) @@ -868,16 +871,22 @@ emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst) for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); - int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]); - int s3_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]); int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); - int zero_reg = get_itemp(gen); - - spe_xor(gen->f, zero_reg, zero_reg, zero_reg); + int tmp_reg = get_itemp(gen); + + /* If negative, subtract 1.0 */ + spe_xor(gen->f, tmp_reg, tmp_reg, tmp_reg); + spe_fcgt(gen->f, d_reg, tmp_reg, s1_reg); + spe_selb(gen->f, tmp_reg, tmp_reg, get_const_one_reg(gen), d_reg); + spe_fs(gen->f, d_reg, s1_reg, tmp_reg); + + /* Convert float to int */ + spe_cflts(gen->f, d_reg, d_reg, 0); + + /* Convert int to float */ + spe_csflt(gen->f, d_reg, d_reg, 0); + - /* d = (s1 < 0) ? s2 : s3 */ - spe_fcgt(gen->f, d_reg, zero_reg, s1_reg); - spe_selb(gen->f, d_reg, s3_reg, s2_reg, d_reg); store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); free_itemps(gen); @@ -1100,6 +1109,8 @@ emit_instruction(struct codegen *gen, return emit_MAX(gen, inst); case TGSI_OPCODE_MIN: return emit_MIN(gen, inst); + case TGSI_OPCODE_FLR: + return emit_FLR(gen, inst); case TGSI_OPCODE_END: return emit_END(gen); |