1 /* -*- mesa-c++  -*-
2  *
3  * Copyright (c) 2018-2019 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_EMITTEXINSTRUCTION_H
28 #define SFN_EMITTEXINSTRUCTION_H
29 
30 #include "sfn_emitinstruction.h"
31 #include "sfn_instruction_tex.h"
32 
33 namespace r600  {
34 
35 class EmitTexInstruction : public EmitInstruction
36 {
37 public:
38    EmitTexInstruction(ShaderFromNirProcessor& processor);
39 
40 private:
41    struct TexInputs {
42       TexInputs();
43       const nir_variable *sampler_deref;
44       const nir_variable *texture_deref;
45       GPRVector coord;
46       PValue bias;
47       PValue comperator;
48       PValue lod;
49       GPRVector ddx;
50       GPRVector ddy;
51       nir_src *offset;
52       PValue gather_comp;
53       PValue ms_index;
54       PValue sampler_offset;
55       PValue texture_offset;
56    };
57 
58    bool emit_tex_tex(nir_tex_instr* instr, TexInputs& src);
59 
60    bool emit_tex_txf(nir_tex_instr* instr, TexInputs &src);
61    bool emit_tex_txb(nir_tex_instr* instr, TexInputs& src);
62    bool emit_tex_txd(nir_tex_instr* instr, TexInputs& src);
63    bool emit_tex_txl(nir_tex_instr* instr, TexInputs& src);
64    bool emit_tex_txs(nir_tex_instr* instr, TexInputs& src,
65                      const std::array<int, 4> &dest_swz);
66    bool emit_tex_texture_samples(nir_tex_instr* instr, TexInputs& src,
67                                  const std::array<int, 4> &dest_swz);
68    bool emit_tex_lod(nir_tex_instr* instr, TexInputs& src);
69    bool emit_tex_tg4(nir_tex_instr* instr, TexInputs& src);
70    bool emit_tex_txf_ms(nir_tex_instr* instr, TexInputs& src);
71    bool emit_buf_txf(nir_tex_instr* instr, TexInputs& src);
72 
73    bool get_inputs(const nir_tex_instr& instr, TexInputs &src);
74 
75    void set_rect_coordinate_flags(nir_tex_instr* instr, TexInstruction* ir) const;
76 
77    bool do_emit(nir_instr* instr) override;
78 
79    GPRVector make_dest(nir_tex_instr& instr);
80    GPRVector make_dest(nir_tex_instr &instr, const std::array<int, 4> &swizzle);
81 
82    void set_offsets(TexInstruction* ir, nir_src *offset);
83    void handle_array_index(const nir_tex_instr& instr, const GPRVector &src, TexInstruction* ir);
84 
85    struct SamplerId {
86       int id;
87       bool indirect;
88    };
89 
90    SamplerId get_sampler_id(int sampler_id, const nir_variable *deref);
91 
92 };
93 
94 }
95 
96 #endif // SFN_EMITTEXINSTRUCTION_H
97