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_SHADERIO_H
28#define SFN_SHADERIO_H
29
30#include "compiler/nir/nir.h"
31#include "pipe/p_defines.h"
32#include "pipe/p_shader_tokens.h"
33#include "gallium/drivers/r600/r600_shader.h"
34
35#include <vector>
36#include <memory>
37
38namespace r600 {
39
40class ShaderInput {
41public:
42   ShaderInput();
43   virtual  ~ShaderInput();
44
45   ShaderInput(tgsi_semantic name);
46   tgsi_semantic name() const {return m_name;}
47
48   void set_gpr(int gpr) {m_gpr = gpr;}
49   int gpr() const {return m_gpr;}
50   void set_ioinfo(r600_shader_io& io, int translated_ij_index) const;
51
52   virtual void set_lds_pos(int lds_pos);
53   virtual int ij_index() const;
54   virtual bool interpolate() const;
55   virtual int lds_pos() const;
56   void set_uses_interpolate_at_centroid();
57
58   virtual bool is_varying() const;
59
60private:
61   virtual void set_specific_ioinfo(r600_shader_io& io) const;
62
63   tgsi_semantic m_name;
64   int m_gpr;
65   bool m_uses_interpolate_at_centroid;
66};
67
68using PShaderInput = std::shared_ptr<ShaderInput>;
69
70class ShaderInputSystemValue: public ShaderInput {
71public:
72   ShaderInputSystemValue(tgsi_semantic name, int gpr);
73   void set_specific_ioinfo(r600_shader_io& io) const;
74   int m_gpr;
75};
76
77class ShaderInputVarying : public ShaderInput {
78public:
79   ShaderInputVarying(tgsi_semantic _name, int sid, unsigned driver_location,
80                      unsigned frac, unsigned components, tgsi_interpolate_mode interpolate,
81                      tgsi_interpolate_loc interp_loc);
82   ShaderInputVarying(tgsi_semantic name, int sid, nir_variable *input);
83   ShaderInputVarying(tgsi_semantic name, const ShaderInputVarying& orig,
84                      size_t location);
85
86   void set_lds_pos(int lds_pos) override;
87
88   int ij_index() const override;
89
90   bool interpolate() const override;
91
92   int lds_pos() const override;
93
94   int sid() const {return m_sid;}
95
96   void update_mask(int additional_comps, int frac);
97
98   size_t location() const {return m_driver_location;}
99   int location_frac() const {return m_location_frac;}
100
101   bool is_varying() const override;
102
103private:
104   void evaluate_spi_sid();
105
106   virtual void set_color_ioinfo(r600_shader_io& io) const;
107   void set_specific_ioinfo(r600_shader_io& io) const override;
108   size_t m_driver_location;
109   int m_location_frac;
110   int m_sid;
111   int m_spi_sid;
112   tgsi_interpolate_mode m_interpolate;
113   tgsi_interpolate_loc m_interpolate_loc;
114   int m_ij_index;
115   int m_lds_pos;
116   int m_mask;
117};
118
119class ShaderInputColor: public ShaderInputVarying {
120public:
121   ShaderInputColor(tgsi_semantic _name, int sid, unsigned driver_location,
122                    unsigned frac, unsigned components, tgsi_interpolate_mode interpolate,
123                    tgsi_interpolate_loc interp_loc);
124   ShaderInputColor(tgsi_semantic name, int sid, nir_variable *input);
125   void set_back_color(unsigned back_color_input_idx);
126   unsigned back_color_input_index() const {
127      return m_back_color_input_idx;
128   }
129private:
130   void set_color_ioinfo(UNUSED r600_shader_io& io) const override;
131   unsigned m_back_color_input_idx;
132
133};
134
135class ShaderIO
136{
137public:
138   ShaderIO();
139
140   size_t add_input(ShaderInput *input);
141
142   std::vector<PShaderInput>& inputs();
143   ShaderInput& input(size_t k);
144
145   ShaderInput& input(size_t driver_loc, int frac);
146
147   void set_two_sided();
148   bool two_sided() {return m_two_sided;}
149
150   int nlds() const  {
151      return m_lds_pos;
152   }
153
154   void sort_varying_inputs();
155
156   size_t size() const {return m_inputs.size();}
157
158   PShaderInput find_varying(tgsi_semantic name, int sid);
159
160   void update_lds_pos();
161
162private:
163   std::vector<PShaderInput> m_inputs;
164   std::vector<int> m_ldspos;
165   bool m_two_sided;
166   int m_lds_pos;
167
168};
169
170std::pair<unsigned, unsigned>
171r600_get_varying_semantic(unsigned varying_location);
172
173
174}
175
176#endif // SFN_SHADERIO_H
177