src/intel/compiler/brw_vec4_vs.h

   1 /*
   2  * Copyright © 2006 - 2015 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 DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef BRW_VEC4_VS_VISITOR_H
  25 #define BRW_VEC4_VS_VISITOR_H
  26
  27 #include "brw_vec4.h"
  28
  29 namespace brw {
  30
  31 class vec4_vs_visitor : public vec4_visitor
  32 {
  33 public:
  34    vec4_vs_visitor(const struct brw_compiler *compiler,
  35                    void *log_data,
  36                    const struct brw_vs_prog_key *key,
  37                    struct brw_vs_prog_data *vs_prog_data,
  38                    const nir_shader *shader,
  39                    gl_clip_plane *clip_planes,
  40                    void *mem_ctx,
  41                    int shader_time_index,
  42                    bool use_legacy_snorm_formula);
  43
  44 protected:
  45    virtual dst_reg *make_reg_for_system_value(int location);
  46    virtual void setup_payload();
  47    virtual void emit_prolog();
  48    virtual void emit_thread_end();
  49    virtual void emit_urb_write_header(int mrf);
  50    virtual void emit_urb_slot(dst_reg reg, int varying);
  51    virtual vec4_instruction *emit_urb_write_opcode(bool complete);
  52
  53 private:
  54    int setup_attributes(int payload_reg);
  55    void setup_uniform_clipplane_values();
  56    void emit_clip_distances(dst_reg reg, int offset);
  57
  58    const struct brw_vs_prog_key *const key;
  59    struct brw_vs_prog_data * const vs_prog_data;
  60
  61    gl_clip_plane *clip_planes;
  62
  63    bool use_legacy_snorm_formula;
  64 };
  65
  66 } /* namespace brw */
  67
  68 #endif /* BRW_VEC4_VS_VISITOR_H */