1 /* -*- mesa-c++  -*-
2  *
3  * Copyright (c) 2018 Collabora LTD
4  *
5  * Author: Gert Wollny <gert.wollny@collabora.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * on the rights to use, copy, modify, merge, publish, distribute, sub
11  * license, and/or sell copies of the Software, and to permit persons to whom
12  * the Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the next
15  * paragraph) shall be included in all copies or substantial portions of the
16  * Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 #ifndef sfn_vertex_shader_from_nir_h
28 #define sfn_vertex_shader_from_nir_h
29 
30 #include "sfn_shader_base.h"
31 #include "sfn_vertexstageexport.h"
32 
33 namespace r600 {
34 
35 class VertexShaderFromNir : public VertexStage {
36 public:
37    VertexShaderFromNir(r600_pipe_shader *sh,
38                        r600_pipe_shader_selector &sel,
39                        const r600_shader_key &key, r600_shader *gs_shader,
40                        enum chip_class chip_class);
41 
42    bool scan_sysvalue_access(nir_instr *instr) override;
43 
primitive_id()44    PValue primitive_id() override {return m_primitive_id;}
45 protected:
46 
47    // todo: encapsulate
48    unsigned m_num_clip_dist;
49    ExportInstruction *m_last_param_export;
50    ExportInstruction *m_last_pos_export;
51    r600_pipe_shader *m_pipe_shader;
52    unsigned m_enabled_stream_buffers_mask;
53    const pipe_stream_output_info *m_so_info;
54    void do_finalize() override;
55 
56    std::map<unsigned, unsigned> m_param_map;
57 
58    bool scan_inputs_read(const nir_shader *sh) override;
59 
60 private:
61    bool load_input(nir_intrinsic_instr* instr);
62 
63    void finalize_exports();
64 
65    void emit_shader_start() override;
66    bool do_allocate_reserved_registers() override;
67    bool emit_intrinsic_instruction_override(nir_intrinsic_instr* instr) override;
68    bool emit_store_local_shared(nir_intrinsic_instr* instr);
69 
70    PValue m_vertex_id;
71    PValue m_instance_id;
72    PValue m_rel_vertex_id;
73    PValue m_primitive_id;
74    std::vector<PGPRValue> m_attribs;
75    r600_shader_key m_key;
76 
77    std::unique_ptr<VertexStageExportBase> m_export_processor;
78    unsigned m_max_attrib;
79 };
80 
81 }
82 
83 #endif
84