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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 void nir_emit_intrinsic(nir_intrinsic_instr *instr);
51 
52    virtual void setup_payload();
53    virtual void emit_prolog();
54    virtual void emit_thread_end();
55 
56    virtual void emit_urb_write_header(int mrf);
57    virtual vec4_instruction *emit_urb_write_opcode(bool complete);
58 
59 private:
60    src_reg input_read_header;
61 };
62 
63 } /* namespace brw */
64 #endif /* __cplusplus */
65 
66 #endif /* BRW_VEC4_TES_H */
67