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 "pipe/p_compiler.h"
  33 #include "pipe/p_shader_tokens.h"
  34
  35 /* XXX some of these are pretty arbitrary limits, may be better to switch
  36  * to dynamic allocation at some point.
  37  */
  38 #define ETNA_MAX_TEMPS (64) /* max temp register count of all Vivante hw */
  39 #define ETNA_MAX_TOKENS (2048)
  40 #define ETNA_MAX_IMM (1024) /* max const+imm in 32-bit words */
  41 #define ETNA_MAX_DECL (2048) /* max declarations */
  42 #define ETNA_MAX_DEPTH (32)
  43 #define ETNA_MAX_INSTRUCTIONS (2048)
  44
  45 /* compiler output per input/output */
  46 struct etna_shader_inout {
  47    int reg; /* native register */
  48    struct tgsi_declaration_semantic semantic; /* tgsi semantic name and index */
  49    int num_components;
  50 };
  51
  52 struct etna_shader_io_file {
  53    size_t num_reg;
  54    struct etna_shader_inout reg[ETNA_NUM_INPUTS];
  55 };
  56
  57 /* shader object, for linking */
  58 struct etna_shader {
  59    uint processor; /* TGSI_PROCESSOR_... */
  60    uint32_t code_size; /* code size in uint32 words */
  61    uint32_t *code;
  62    unsigned num_loops;
  63    unsigned num_temps;
  64
  65    struct etna_shader_uniform_info uniforms;
  66
  67    /* ETNA_DIRTY_* flags that, when set in context dirty, mean that the
  68     * uniforms have to get (partial) reloaded. */
  69    uint32_t uniforms_dirty_bits;
  70
  71    /* inputs (for linking) for fs, the inputs must be in register 1..N */
  72    struct etna_shader_io_file infile;
  73
  74    /* outputs (for linking) */
  75    struct etna_shader_io_file outfile;
  76
  77    /* index into outputs (for linking) */
  78    int output_count_per_semantic[TGSI_SEMANTIC_COUNT];
  79    struct etna_shader_inout * *output_per_semantic_list; /* list of pointers to outputs */
  80    struct etna_shader_inout **output_per_semantic[TGSI_SEMANTIC_COUNT];
  81
  82    /* special outputs (vs only) */
  83    int vs_pos_out_reg; /* VS position output */
  84    int vs_pointsize_out_reg; /* VS point size output */
  85    uint32_t vs_load_balancing;
  86
  87    /* special outputs (ps only) */
  88    int ps_color_out_reg; /* color output register */
  89    int ps_depth_out_reg; /* depth output register */
  90
  91    /* unknown input property (XX_INPUT_COUNT, field UNK8) */
  92    uint32_t input_count_unk8;
  93 };
  94
  95 struct etna_varying {
  96    uint32_t pa_attributes;
  97    uint8_t num_components;
  98    uint8_t use[4];
  99    uint8_t reg;
 100 };
 101
 102 struct etna_shader_link_info {
 103    /* each PS input is annotated with the VS output reg */
 104    unsigned num_varyings;
 105    struct etna_varying varyings[ETNA_NUM_INPUTS];
 106 };
 107
 108 struct etna_shader *
 109 etna_compile_shader(const struct etna_specs *specs, const struct tgsi_token *tokens);
 110
 111 void
 112 etna_dump_shader(const struct etna_shader *shader);
 113
 114 bool
 115 etna_link_shader(struct etna_shader_link_info *info,
 116                  const struct etna_shader *vs, const struct etna_shader *fs);
 117
 118 void
 119 etna_destroy_shader(struct etna_shader *shader);
 120
 121 #endif