diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp index 72559465864..638eaa416c8 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp @@ -742,7 +742,37 @@ fs_visitor::emit_texture_gen5(ir_texture *ir, fs_reg dst, fs_reg coordinate, inst = emit(FS_OPCODE_TXL, dst); break; - case ir_txd: + case ir_txd: { + ir->lod_info.grad.dPdx->accept(this); + fs_reg dPdx = this->result; + + ir->lod_info.grad.dPdy->accept(this); + fs_reg dPdy = this->result; + + mlen = MAX2(mlen, header_present + 4 * reg_width); /* skip over 'ai' */ + + /** + * P = u, v, r + * dPdx = dudx, dvdx, drdx + * dPdy = dudy, dvdy, drdy + * + * Load up these values: + * - dudx dudy dvdx dvdy drdx drdy + * - dPdx.x dPdy.x dPdx.y dPdy.y dPdx.z dPdy.z + */ + for (int i = 0; i < ir->lod_info.grad.dPdx->type->vector_elements; i++) { + emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + mlen), dPdx); + dPdx.reg_offset++; + mlen += reg_width; + + emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + mlen), dPdy); + dPdy.reg_offset++; + mlen += reg_width; + } + + inst = emit(FS_OPCODE_TXD, dst); + break; + } case ir_txf: assert(!"GLSL 1.30 features unsupported"); break; |