diff options
author | Brian Paul <[email protected]> | 2008-09-12 21:09:10 -0600 |
---|---|---|
committer | Brian Paul <[email protected]> | 2008-09-12 21:09:10 -0600 |
commit | 6f3eee921327ce76c05620eec714f2ff4f500826 (patch) | |
tree | dad9df1a1b7b226bf79f570d3fb8ce532f779e9c /src/gallium | |
parent | 31a112cad4d2e515bc668b58abd4e402b4362c70 (diff) |
cell: implement DDX/DDY codegen (untested)
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 37 |
1 files changed, 37 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 33579fc7033..a7b7dd03d37 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -509,6 +509,38 @@ emit_ENDIF(struct codegen *gen, const struct tgsi_full_instruction *inst) } +static boolean +emit_DDX_DDY(struct codegen *gen, const struct tgsi_full_instruction *inst, + boolean ddx) +{ + int ch; + + for (ch = 0; ch < 4; ch++) { + if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int s_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + + int t1_reg = get_itemp(gen); + int t2_reg = get_itemp(gen); + + spe_splat_word(gen->f, t1_reg, s_reg, 0); /* upper-left pixel */ + if (ddx) { + spe_splat_word(gen->f, t2_reg, s_reg, 1); /* upper-right pixel */ + } + else { + spe_splat_word(gen->f, t2_reg, s_reg, 2); /* lower-left pixel */ + } + spe_fs(gen->f, d_reg, t2_reg, t1_reg); + + free_itemps(gen); + } + } + + return true; +} + + + /** * Emit END instruction. @@ -555,6 +587,11 @@ emit_instruction(struct codegen *gen, case TGSI_OPCODE_ENDIF: return emit_ENDIF(gen, inst); + case TGSI_OPCODE_DDX: + return emit_DDX_DDY(gen, inst, true); + case TGSI_OPCODE_DDY: + return emit_DDX_DDY(gen, inst, false); + /* XXX lots more cases to do... */ default: |