diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index bd48decdc6a..f36933d485d 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -3386,6 +3386,104 @@ lower_fb_write_logical_send(const fs_builder &bld, fs_inst *inst, inst->header_size = header_size; } +static void +lower_sampler_logical_send_gen5(const fs_builder &bld, fs_inst *inst, opcode op, + fs_reg coordinate, + const fs_reg &shadow_c, + fs_reg lod, fs_reg lod2, + const fs_reg &sample_index, + const fs_reg &sampler, + const fs_reg &offset_value, + unsigned coord_components, + unsigned grad_components) +{ + fs_reg message(MRF, 2, BRW_REGISTER_TYPE_F); + fs_reg msg_coords = message; + unsigned header_size = 0; + + if (offset_value.file != BAD_FILE) { + /* The offsets set up by the visitor are in the m1 header, so we can't + * go headerless. + */ + header_size = 1; + message.reg--; + } + + for (unsigned i = 0; i < coord_components; i++) { + bld.MOV(retype(offset(msg_coords, bld, i), coordinate.type), coordinate); + coordinate = offset(coordinate, bld, 1); + } + fs_reg msg_end = offset(msg_coords, bld, coord_components); + fs_reg msg_lod = offset(msg_coords, bld, 4); + + if (shadow_c.file != BAD_FILE) { + fs_reg msg_shadow = msg_lod; + bld.MOV(msg_shadow, shadow_c); + msg_lod = offset(msg_shadow, bld, 1); + msg_end = msg_lod; + } + + switch (op) { + case SHADER_OPCODE_TXL: + case FS_OPCODE_TXB: + bld.MOV(msg_lod, lod); + msg_end = offset(msg_lod, bld, 1); + break; + case SHADER_OPCODE_TXD: + /** + * 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 + */ + msg_end = msg_lod; + for (unsigned i = 0; i < grad_components; i++) { + bld.MOV(msg_end, lod); + lod = offset(lod, bld, 1); + msg_end = offset(msg_end, bld, 1); + + bld.MOV(msg_end, lod2); + lod2 = offset(lod2, bld, 1); + msg_end = offset(msg_end, bld, 1); + } + break; + case SHADER_OPCODE_TXS: + msg_lod = retype(msg_end, BRW_REGISTER_TYPE_UD); + bld.MOV(msg_lod, lod); + msg_end = offset(msg_lod, bld, 1); + break; + case SHADER_OPCODE_TXF: + msg_lod = offset(msg_coords, bld, 3); + bld.MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), lod); + msg_end = offset(msg_lod, bld, 1); + break; + case SHADER_OPCODE_TXF_CMS: + msg_lod = offset(msg_coords, bld, 3); + /* lod */ + bld.MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), fs_reg(0u)); + /* sample index */ + bld.MOV(retype(offset(msg_lod, bld, 1), BRW_REGISTER_TYPE_UD), sample_index); + msg_end = offset(msg_lod, bld, 2); + break; + default: + break; + } + + inst->opcode = op; + inst->src[0] = reg_undef; + inst->src[1] = sampler; + inst->resize_sources(2); + inst->base_mrf = message.reg; + inst->mlen = msg_end.reg - message.reg; + inst->header_size = header_size; + + /* Message length > MAX_SAMPLER_MESSAGE_SIZE disallowed by hardware. */ + assert(inst->mlen <= MAX_SAMPLER_MESSAGE_SIZE); +} + static bool is_high_sampler(const struct brw_device_info *devinfo, const fs_reg &sampler) { @@ -3621,6 +3719,11 @@ lower_sampler_logical_send(const fs_builder &bld, fs_inst *inst, opcode op) shadow_c, lod, lod2, sample_index, mcs, sampler, offset_value, coord_components, grad_components); + } else if (devinfo->gen >= 5) { + lower_sampler_logical_send_gen5(bld, inst, op, coordinate, + shadow_c, lod, lod2, sample_index, + sampler, offset_value, + coord_components, grad_components); } else { assert(!"Not implemented"); } |