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 /* compiler output per input/output */
  48 struct etna_shader_inout {
  49    int reg; /* native register */
  50    struct tgsi_declaration_semantic semantic; /* tgsi semantic name and index */
  51    int slot; /* nir: gl_varying_slot or gl_vert_attrib */
  52    int num_components;
  53 };
  54
  55 struct etna_shader_io_file {
  56    size_t num_reg;
  57    struct etna_shader_inout reg[ETNA_NUM_INPUTS];
  58 };
  59
  60 /* shader object, for linking */
  61 struct etna_shader_variant {
  62    uint32_t id; /* for debug */
  63
  64    gl_shader_stage stage;
  65    uint32_t code_size; /* code size in uint32 words */
  66    uint32_t *code;
  67    unsigned num_loops;
  68    unsigned num_temps;
  69
  70    struct etna_shader_uniform_info uniforms;
  71
  72    /* ETNA_DIRTY_* flags that, when set in context dirty, mean that the
  73     * uniforms have to get (partial) reloaded. */
  74    uint32_t uniforms_dirty_bits;
  75
  76    /* inputs (for linking) for fs, the inputs must be in register 1..N */
  77    struct etna_shader_io_file infile;
  78
  79    /* outputs (for linking) */
  80    struct etna_shader_io_file outfile;
  81
  82    /* index into outputs (for linking) - only for TGSI compiler */
  83    int output_count_per_semantic[TGSI_SEMANTIC_COUNT];
  84    struct etna_shader_inout * *output_per_semantic_list; /* list of pointers to outputs */
  85    struct etna_shader_inout **output_per_semantic[TGSI_SEMANTIC_COUNT];
  86
  87    /* special inputs/outputs (vs only) */
  88    int vs_id_in_reg; /* vertexid+instanceid input */
  89    int vs_pos_out_reg; /* VS position output */
  90    int vs_pointsize_out_reg; /* VS point size output */
  91    uint32_t vs_load_balancing;
  92
  93    /* special outputs (ps only) */
  94    int ps_color_out_reg; /* color output register */
  95    int ps_depth_out_reg; /* depth output register */
  96
  97    /* unknown input property (XX_INPUT_COUNT, field UNK8) */
  98    uint32_t input_count_unk8;
  99
 100    /* shader is larger than GPU instruction limit, thus needs icache */
 101    bool needs_icache;
 102
 103    /* shader variants form a linked list */
 104    struct etna_shader_variant *next;
 105
 106    /* replicated here to avoid passing extra ptrs everywhere */
 107    struct etna_shader *shader;
 108    struct etna_shader_key key;
 109
 110    struct etna_bo *bo; /* cached code memory bo handle (for icache) */
 111 };
 112
 113 struct etna_varying {
 114    uint32_t pa_attributes;
 115    uint8_t num_components;
 116    uint8_t use[4];
 117    uint8_t reg;
 118 };
 119
 120 struct etna_shader_link_info {
 121    /* each PS input is annotated with the VS output reg */
 122    unsigned num_varyings;
 123    struct etna_varying varyings[ETNA_NUM_INPUTS];
 124    int pcoord_varying_comp_ofs;
 125 };
 126
 127 bool
 128 etna_compile_shader(struct etna_shader_variant *shader);
 129
 130 void
 131 etna_dump_shader(const struct etna_shader_variant *shader);
 132
 133 bool
 134 etna_link_shader(struct etna_shader_link_info *info,
 135                  const struct etna_shader_variant *vs, const struct etna_shader_variant *fs);
 136
 137 void
 138 etna_destroy_shader(struct etna_shader_variant *shader);
 139
 140 /* NIR compiler */
 141
 142 bool
 143 etna_compile_shader_nir(struct etna_shader_variant *shader);
 144
 145 void
 146 etna_dump_shader_nir(const struct etna_shader_variant *shader);
 147
 148 bool
 149 etna_link_shader_nir(struct etna_shader_link_info *info,
 150                      const struct etna_shader_variant *vs,
 151                      const struct etna_shader_variant *fs);
 152
 153 void
 154 etna_destroy_shader_nir(struct etna_shader_variant *shader);
 155
 156 #endif