1/*
2 * Copyright (c) 2012-2015 Etnaviv Project
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, sub license,
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
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the 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 NON-INFRINGEMENT. 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 * Authors:
24 *    Wladimir J. van der Laan <laanwj@gmail.com>
25 */
26
27#ifndef H_ETNAVIV_COMPILER
28#define H_ETNAVIV_COMPILER
29
30#include "etnaviv_context.h"
31#include "etnaviv_internal.h"
32#include "etnaviv_shader.h"
33#include "pipe/p_compiler.h"
34#include "pipe/p_shader_tokens.h"
35
36/* XXX some of these are pretty arbitrary limits, may be better to switch
37 * to dynamic allocation at some point.
38 */
39#define ETNA_MAX_TEMPS (64) /* max temp register count of all Vivante hw */
40#define ETNA_MAX_TOKENS (2048)
41#define ETNA_MAX_IMM (1024) /* max const+imm in 32-bit words */
42#define ETNA_MAX_DECL (2048) /* max declarations */
43#define ETNA_MAX_DEPTH (32)
44#define ETNA_MAX_INSTRUCTIONS (2048)
45
46/* compiler output per input/output */
47struct etna_shader_inout {
48   int reg; /* native register */
49   struct tgsi_declaration_semantic semantic; /* tgsi semantic name and index */
50   int num_components;
51};
52
53struct etna_shader_io_file {
54   size_t num_reg;
55   struct etna_shader_inout reg[ETNA_NUM_INPUTS];
56};
57
58/* shader object, for linking */
59struct etna_shader_variant {
60   uint32_t id; /* for debug */
61
62   uint processor; /* TGSI_PROCESSOR_... */
63   uint32_t code_size; /* code size in uint32 words */
64   uint32_t *code;
65   unsigned num_loops;
66   unsigned num_temps;
67
68   struct etna_shader_uniform_info uniforms;
69
70   /* ETNA_DIRTY_* flags that, when set in context dirty, mean that the
71    * uniforms have to get (partial) reloaded. */
72   uint32_t uniforms_dirty_bits;
73
74   /* inputs (for linking) for fs, the inputs must be in register 1..N */
75   struct etna_shader_io_file infile;
76
77   /* outputs (for linking) */
78   struct etna_shader_io_file outfile;
79
80   /* index into outputs (for linking) */
81   int output_count_per_semantic[TGSI_SEMANTIC_COUNT];
82   struct etna_shader_inout * *output_per_semantic_list; /* list of pointers to outputs */
83   struct etna_shader_inout **output_per_semantic[TGSI_SEMANTIC_COUNT];
84
85   /* special outputs (vs only) */
86   int vs_pos_out_reg; /* VS position output */
87   int vs_pointsize_out_reg; /* VS point size output */
88   uint32_t vs_load_balancing;
89
90   /* special outputs (ps only) */
91   int ps_color_out_reg; /* color output register */
92   int ps_depth_out_reg; /* depth output register */
93
94   /* unknown input property (XX_INPUT_COUNT, field UNK8) */
95   uint32_t input_count_unk8;
96
97   /* shader is larger than GPU instruction limit, thus needs icache */
98   bool needs_icache;
99
100   /* shader variants form a linked list */
101   struct etna_shader_variant *next;
102
103   /* replicated here to avoid passing extra ptrs everywhere */
104   struct etna_shader *shader;
105   struct etna_shader_key key;
106
107   struct etna_bo *bo; /* cached code memory bo handle (for icache) */
108};
109
110struct etna_varying {
111   uint32_t pa_attributes;
112   uint8_t num_components;
113   uint8_t use[4];
114   uint8_t reg;
115};
116
117struct etna_shader_link_info {
118   /* each PS input is annotated with the VS output reg */
119   unsigned num_varyings;
120   struct etna_varying varyings[ETNA_NUM_INPUTS];
121   int pcoord_varying_comp_ofs;
122};
123
124bool
125etna_compile_shader(struct etna_shader_variant *shader);
126
127void
128etna_dump_shader(const struct etna_shader_variant *shader);
129
130bool
131etna_link_shader(struct etna_shader_link_info *info,
132                 const struct etna_shader_variant *vs, const struct etna_shader_variant *fs);
133
134void
135etna_destroy_shader(struct etna_shader_variant *shader);
136
137#endif
138