src/gallium/drivers/etnaviv/etnaviv_compiler.h

   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 #include "compiler/shader_enums.h"
  36
  37 /* XXX some of these are pretty arbitrary limits, may be better to switch
  38  * to dynamic allocation at some point.
  39  */
  40 #define ETNA_MAX_TEMPS (64) /* max temp register count of all Vivante hw */
  41 #define ETNA_MAX_TOKENS (2048)
  42 #define ETNA_MAX_IMM (1024) /* max const+imm in 32-bit words */
  43 #define ETNA_MAX_DECL (2048) /* max declarations */
  44 #define ETNA_MAX_DEPTH (32)
  45 #define ETNA_MAX_INSTRUCTIONS (2048)
  46
  47 /**
  48  * Compiler state saved across compiler invocations, for any expensive global
  49  * setup.
  50  */
  51 struct etna_compiler {
  52    uint32_t shader_count;
  53    struct ra_regs *regs;
  54 };
  55
  56 /* compiler output per input/output */
  57 struct etna_shader_inout {
  58    int reg; /* native register */
  59    struct tgsi_declaration_semantic semantic; /* tgsi semantic name and index */
  60    int slot; /* nir: gl_varying_slot or gl_vert_attrib */
  61    int num_components;
  62 };
  63
  64 struct etna_shader_io_file {
  65    size_t num_reg;
  66    struct etna_shader_inout reg[ETNA_NUM_INPUTS];
  67 };
  68
  69 /* shader object, for linking */
  70 struct etna_shader_variant {
  71    uint32_t id; /* for debug */
  72
  73    gl_shader_stage stage;
  74    uint32_t code_size; /* code size in uint32 words */
  75    uint32_t *code;
  76    unsigned num_loops;
  77    unsigned num_temps;
  78
  79    struct etna_shader_uniform_info uniforms;
  80
  81    /* ETNA_DIRTY_* flags that, when set in context dirty, mean that the
  82     * uniforms have to get (partial) reloaded. */
  83    uint32_t uniforms_dirty_bits;
  84
  85    /* inputs (for linking) for fs, the inputs must be in register 1..N */
  86    struct etna_shader_io_file infile;
  87
  88    /* outputs (for linking) */
  89    struct etna_shader_io_file outfile;
  90
  91    /* index into outputs (for linking) - only for TGSI compiler */
  92    int output_count_per_semantic[TGSI_SEMANTIC_COUNT];
  93    struct etna_shader_inout * *output_per_semantic_list; /* list of pointers to outputs */
  94    struct etna_shader_inout **output_per_semantic[TGSI_SEMANTIC_COUNT];
  95
  96    /* special inputs/outputs (vs only) */
  97    int vs_id_in_reg; /* vertexid+instanceid input */
  98    int vs_pos_out_reg; /* VS position output */
  99    int vs_pointsize_out_reg; /* VS point size output */
 100    uint32_t vs_load_balancing;
 101
 102    /* special outputs (ps only) */
 103    int ps_color_out_reg; /* color output register */
 104    int ps_depth_out_reg; /* depth output register */
 105
 106    /* unknown input property (XX_INPUT_COUNT, field UNK8) */
 107    uint32_t input_count_unk8;
 108
 109    /* shader is larger than GPU instruction limit, thus needs icache */
 110    bool needs_icache;
 111
 112    /* shader variants form a linked list */
 113    struct etna_shader_variant *next;
 114
 115    /* replicated here to avoid passing extra ptrs everywhere */
 116    struct etna_shader *shader;
 117    struct etna_shader_key key;
 118
 119    struct etna_bo *bo; /* cached code memory bo handle (for icache) */
 120 };
 121
 122 struct etna_varying {
 123    uint32_t pa_attributes;
 124    uint8_t num_components;
 125    uint8_t use[4];
 126    uint8_t reg;
 127 };
 128
 129 struct etna_shader_link_info {
 130    /* each PS input is annotated with the VS output reg */
 131    unsigned num_varyings;
 132    struct etna_varying varyings[ETNA_NUM_INPUTS];
 133    int pcoord_varying_comp_ofs;
 134 };
 135
 136 struct etna_compiler *
 137 etna_compiler_create(void);
 138
 139 void
 140 etna_compiler_destroy(const struct etna_compiler *compiler);
 141
 142 bool
 143 etna_compile_shader(struct etna_shader_variant *shader);
 144
 145 void
 146 etna_dump_shader(const struct etna_shader_variant *shader);
 147
 148 bool
 149 etna_link_shader(struct etna_shader_link_info *info,
 150                  const struct etna_shader_variant *vs, const struct etna_shader_variant *fs);
 151
 152 void
 153 etna_destroy_shader(struct etna_shader_variant *shader);
 154
 155 /* NIR compiler */
 156
 157 bool
 158 etna_compile_shader_nir(struct etna_shader_variant *shader);
 159
 160 void
 161 etna_dump_shader_nir(const struct etna_shader_variant *shader);
 162
 163 bool
 164 etna_link_shader_nir(struct etna_shader_link_info *info,
 165                      const struct etna_shader_variant *vs,
 166                      const struct etna_shader_variant *fs);
 167
 168 void
 169 etna_destroy_shader_nir(struct etna_shader_variant *shader);
 170
 171 #endif