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      1 /*
      2  * Copyright  2013 Intel Corporation
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     21  * DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 /**
     25  * \file brw_vec4_tes.h
     26  *
     27  * The vec4 mode tessellation evaluation shader compiler backend.
     28  */
     29 
     30 #ifndef BRW_VEC4_TES_H
     31 #define BRW_VEC4_TES_H
     32 
     33 #include "brw_vec4.h"
     34 
     35 #ifdef __cplusplus
     36 namespace brw {
     37 
     38 class vec4_tes_visitor : public vec4_visitor
     39 {
     40 public:
     41    vec4_tes_visitor(const struct brw_compiler *compiler,
     42                    void *log_data,
     43                    const struct brw_tes_prog_key *key,
     44                    struct brw_tes_prog_data *prog_data,
     45                    const nir_shader *nir,
     46                    void *mem_ctx,
     47                    int shader_time_index);
     48 
     49 protected:
     50    virtual dst_reg *make_reg_for_system_value(int location);
     51    virtual void nir_setup_system_value_intrinsic(nir_intrinsic_instr *instr);
     52    virtual void nir_emit_intrinsic(nir_intrinsic_instr *instr);
     53 
     54    virtual void setup_payload();
     55    virtual void emit_prolog();
     56    virtual void emit_thread_end();
     57 
     58    virtual void emit_urb_write_header(int mrf);
     59    virtual vec4_instruction *emit_urb_write_opcode(bool complete);
     60 
     61 private:
     62    src_reg input_read_header;
     63 };
     64 
     65 } /* namespace brw */
     66 #endif /* __cplusplus */
     67 
     68 #endif /* BRW_VEC4_TES_H */
     69