src/gallium/auxiliary/draw/draw_vs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   *   Brian Paul
  32   */
  33
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36
  37 #include "pipe/p_shader_tokens.h"
  38
  39 #include "draw_private.h"
  40 #include "draw_context.h"
  41 #include "draw_vs.h"
  42
  43 #include "translate/translate.h"
  44 #include "translate/translate_cache.h"
  45
  46 #include "tgsi/tgsi_exec.h"
  47
  48
  49
  50
  51 void draw_vs_set_constants( struct draw_context *draw,
  52                             const float (*constants)[4],
  53                             unsigned size )
  54 {
  55    if (((uintptr_t)constants) & 0xf) {
  56       if (size > draw->vs.const_storage_size) {
  57          if (draw->vs.aligned_constant_storage)
  58             align_free((void *)draw->vs.aligned_constant_storage);
  59          draw->vs.aligned_constant_storage = align_malloc( size, 16 );
  60       }
  61       memcpy( (void*)draw->vs.aligned_constant_storage,
  62               constants,
  63               size );
  64       constants = draw->vs.aligned_constant_storage;
  65    }
  66
  67    draw->vs.aligned_constants = constants;
  68    draw_vs_aos_machine_constants( draw->vs.aos_machine, constants );
  69 }
  70
  71
  72 void draw_vs_set_viewport( struct draw_context *draw,
  73                            const struct pipe_viewport_state *viewport )
  74 {
  75    draw_vs_aos_machine_viewport( draw->vs.aos_machine, viewport );
  76 }
  77
  78
  79
  80 struct draw_vertex_shader *
  81 draw_create_vertex_shader(struct draw_context *draw,
  82                           const struct pipe_shader_state *shader)
  83 {
  84    struct draw_vertex_shader *vs;
  85
  86    vs = draw_create_vs_llvm( draw, shader );
  87    if (!vs) {
  88       vs = draw_create_vs_sse( draw, shader );
  89       if (!vs) {
  90          vs = draw_create_vs_ppc( draw, shader );
  91          if (!vs) {
  92             vs = draw_create_vs_exec( draw, shader );
  93          }
  94       }
  95    }
  96
  97    if (vs)
  98    {
  99       uint i;
 100       for (i = 0; i < vs->info.num_outputs; i++) {
 101          if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
 102              vs->info.output_semantic_index[i] == 0)
 103             vs->position_output = i;
 104       }
 105    }
 106
 107    assert(vs);
 108    return vs;
 109 }
 110
 111
 112 void
 113 draw_bind_vertex_shader(struct draw_context *draw,
 114                         struct draw_vertex_shader *dvs)
 115 {
 116    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 117
 118    if (dvs)
 119    {
 120       draw->vs.vertex_shader = dvs;
 121       draw->vs.num_vs_outputs = dvs->info.num_outputs;
 122       draw->vs.position_output = dvs->position_output;
 123       dvs->prepare( dvs, draw );
 124    }
 125    else {
 126       draw->vs.vertex_shader = NULL;
 127       draw->vs.num_vs_outputs = 0;
 128    }
 129 }
 130
 131
 132 void
 133 draw_delete_vertex_shader(struct draw_context *draw,
 134                           struct draw_vertex_shader *dvs)
 135 {
 136    unsigned i;
 137
 138    for (i = 0; i < dvs->nr_varients; i++)
 139       dvs->varient[i]->destroy( dvs->varient[i] );
 140
 141    dvs->nr_varients = 0;
 142
 143    dvs->delete( dvs );
 144 }
 145
 146
 147
 148 boolean
 149 draw_vs_init( struct draw_context *draw )
 150 {
 151    draw->vs.machine = tgsi_exec_machine_create();
 152    if (!draw->vs.machine)
 153       return FALSE;
 154
 155    draw->vs.emit_cache = translate_cache_create();
 156    if (!draw->vs.emit_cache)
 157       return FALSE;
 158
 159    draw->vs.fetch_cache = translate_cache_create();
 160    if (!draw->vs.fetch_cache)
 161       return FALSE;
 162
 163    draw->vs.aos_machine = draw_vs_aos_machine();
 164 #ifdef PIPE_ARCH_X86
 165    if (!draw->vs.aos_machine)
 166       return FALSE;
 167 #endif
 168
 169    return TRUE;
 170 }
 171
 172 void
 173 draw_vs_destroy( struct draw_context *draw )
 174 {
 175    if (draw->vs.fetch_cache)
 176       translate_cache_destroy(draw->vs.fetch_cache);
 177
 178    if (draw->vs.emit_cache)
 179       translate_cache_destroy(draw->vs.emit_cache);
 180
 181    if (draw->vs.aos_machine)
 182       draw_vs_aos_machine_destroy(draw->vs.aos_machine);
 183
 184    if (draw->vs.aligned_constant_storage)
 185       align_free((void*)draw->vs.aligned_constant_storage);
 186
 187    tgsi_exec_machine_destroy(draw->vs.machine);
 188 }
 189
 190
 191 struct draw_vs_varient *
 192 draw_vs_lookup_varient( struct draw_vertex_shader *vs,
 193                         const struct draw_vs_varient_key *key )
 194 {
 195    struct draw_vs_varient *varient;
 196    unsigned i;
 197
 198    /* Lookup existing varient:
 199     */
 200    for (i = 0; i < vs->nr_varients; i++)
 201       if (draw_vs_varient_key_compare(key, &vs->varient[i]->key) == 0)
 202          return vs->varient[i];
 203
 204    /* Else have to create a new one:
 205     */
 206    varient = vs->create_varient( vs, key );
 207    if (varient == NULL)
 208       return NULL;
 209
 210    /* Add it to our list, could be smarter:
 211     */
 212    if (vs->nr_varients < Elements(vs->varient)) {
 213       vs->varient[vs->nr_varients++] = varient;
 214    }
 215    else {
 216       vs->last_varient++;
 217       vs->last_varient %= Elements(vs->varient);
 218       vs->varient[vs->last_varient]->destroy(vs->varient[vs->last_varient]);
 219       vs->varient[vs->last_varient] = varient;
 220    }
 221
 222    /* Done
 223     */
 224    return varient;
 225 }
 226
 227
 228 struct translate *
 229 draw_vs_get_fetch( struct draw_context *draw,
 230                    struct translate_key *key )
 231 {
 232    if (!draw->vs.fetch ||
 233        translate_key_compare(&draw->vs.fetch->key, key) != 0)
 234    {
 235       translate_key_sanitize(key);
 236       draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
 237    }
 238
 239    return draw->vs.fetch;
 240 }
 241
 242 struct translate *
 243 draw_vs_get_emit( struct draw_context *draw,
 244                   struct translate_key *key )
 245 {
 246    if (!draw->vs.emit ||
 247        translate_key_compare(&draw->vs.emit->key, key) != 0)
 248    {
 249       translate_key_sanitize(key);
 250       draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
 251    }
 252
 253    return draw->vs.emit;
 254 }