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
  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 */
  47 struct 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
  53 struct 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 */
  59 struct 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
 110 struct etna_varying {
 111    uint32_t pa_attributes;
 112    uint8_t num_components;
 113    uint8_t use[4];
 114    uint8_t reg;
 115 };
 116
 117 struct 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
 124 bool
 125 etna_compile_shader(struct etna_shader_variant *shader);
 126
 127 void
 128 etna_dump_shader(const struct etna_shader_variant *shader);
 129
 130 bool
 131 etna_link_shader(struct etna_shader_link_info *info,
 132                  const struct etna_shader_variant *vs, const struct etna_shader_variant *fs);
 133
 134 void
 135 etna_destroy_shader(struct etna_shader_variant *shader);
 136
 137 #endif