| /* |
| * Copyright © 2013 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| #include "brw_vec4_vs.h" |
| #include "dev/gen_debug.h" |
| |
| namespace brw { |
| |
| void |
| vec4_vs_visitor::emit_prolog() |
| { |
| } |
| |
| |
| void |
| vec4_vs_visitor::emit_urb_write_header(int mrf) |
| { |
| /* No need to do anything for VS; an implied write to this MRF will be |
| * performed by VS_OPCODE_URB_WRITE. |
| */ |
| (void) mrf; |
| } |
| |
| |
| vec4_instruction * |
| vec4_vs_visitor::emit_urb_write_opcode(bool complete) |
| { |
| /* For VS, the URB writes end the thread. */ |
| if (complete) { |
| if (INTEL_DEBUG & DEBUG_SHADER_TIME) |
| emit_shader_time_end(); |
| } |
| |
| vec4_instruction *inst = emit(VS_OPCODE_URB_WRITE); |
| inst->urb_write_flags = complete ? |
| BRW_URB_WRITE_EOT_COMPLETE : BRW_URB_WRITE_NO_FLAGS; |
| |
| return inst; |
| } |
| |
| |
| void |
| vec4_vs_visitor::emit_urb_slot(dst_reg reg, int varying) |
| { |
| reg.type = BRW_REGISTER_TYPE_F; |
| output_reg[varying][0].type = reg.type; |
| |
| switch (varying) { |
| case VARYING_SLOT_COL0: |
| case VARYING_SLOT_COL1: |
| case VARYING_SLOT_BFC0: |
| case VARYING_SLOT_BFC1: { |
| /* These built-in varyings are only supported in compatibility mode, |
| * and we only support GS in core profile. So, this must be a vertex |
| * shader. |
| */ |
| vec4_instruction *inst = emit_generic_urb_slot(reg, varying, 0); |
| if (inst && key->clamp_vertex_color) |
| inst->saturate = true; |
| break; |
| } |
| default: |
| return vec4_visitor::emit_urb_slot(reg, varying); |
| } |
| } |
| |
| |
| void |
| vec4_vs_visitor::emit_thread_end() |
| { |
| /* For VS, we always end the thread by emitting a single vertex. |
| * emit_urb_write_opcode() will take care of setting the eot flag on the |
| * SEND instruction. |
| */ |
| emit_vertex(); |
| } |
| |
| |
| vec4_vs_visitor::vec4_vs_visitor(const struct brw_compiler *compiler, |
| void *log_data, |
| const struct brw_vs_prog_key *key, |
| struct brw_vs_prog_data *vs_prog_data, |
| const nir_shader *shader, |
| void *mem_ctx, |
| int shader_time_index) |
| : vec4_visitor(compiler, log_data, &key->base.tex, &vs_prog_data->base, |
| shader, mem_ctx, false /* no_spills */, shader_time_index), |
| key(key), |
| vs_prog_data(vs_prog_data) |
| { |
| } |
| |
| |
| } /* namespace brw */ |