src/gallium/auxiliary/draw/draw_pt_emit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 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 #include "pipe/p_util.h"
  29 #include "draw/draw_context.h"
  30 #include "draw/draw_private.h"
  31 #include "draw/draw_vbuf.h"
  32 #include "draw/draw_vertex.h"
  33 #include "draw/draw_pt.h"
  34 #include "translate/translate.h"
  35 #include "translate/translate_cache.h"
  36
  37 struct pt_emit {
  38    struct draw_context *draw;
  39
  40    struct translate *translate;
  41
  42    struct translate_cache *cache;
  43    unsigned prim;
  44 };
  45
  46 void draw_pt_emit_prepare( struct pt_emit *emit,
  47                            unsigned prim )
  48 {
  49    struct draw_context *draw = emit->draw;
  50    const struct vertex_info *vinfo;
  51    unsigned dst_offset;
  52    struct translate_key hw_key;
  53    unsigned i;
  54    boolean ok;
  55
  56    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
  57     */
  58    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
  59
  60
  61    /* XXX: may need to defensively reset this later on as clipping can
  62     * clobber this state in the render backend.
  63     */
  64    emit->prim = prim;
  65
  66    ok = draw->render->set_primitive(draw->render, emit->prim);
  67    if (!ok) {
  68       assert(0);
  69       return;
  70    }
  71
  72    /* Must do this after set_primitive() above:
  73     */
  74    vinfo = draw->render->get_vertex_info(draw->render);
  75
  76
  77    /* Translate from pipeline vertices to hw vertices.
  78     */
  79    dst_offset = 0;
  80    for (i = 0; i < vinfo->num_attribs; i++) {
  81       unsigned emit_sz = 0;
  82       unsigned src_buffer = 0;
  83       unsigned output_format;
  84       unsigned src_offset = (vinfo->src_index[i] * 4 * sizeof(float) );
  85
  86
  87
  88       switch (vinfo->emit[i]) {
  89       case EMIT_4F:
  90          output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
  91          emit_sz = 4 * sizeof(float);
  92          break;
  93       case EMIT_3F:
  94          output_format = PIPE_FORMAT_R32G32B32_FLOAT;
  95          emit_sz = 3 * sizeof(float);
  96          break;
  97       case EMIT_2F:
  98          output_format = PIPE_FORMAT_R32G32_FLOAT;
  99          emit_sz = 2 * sizeof(float);
 100          break;
 101       case EMIT_1F:
 102          output_format = PIPE_FORMAT_R32_FLOAT;
 103          emit_sz = 1 * sizeof(float);
 104          break;
 105       case EMIT_1F_PSIZE:
 106          output_format = PIPE_FORMAT_R32_FLOAT;
 107          emit_sz = 1 * sizeof(float);
 108          src_buffer = 1;
 109          src_offset = 0;
 110          break;
 111       case EMIT_4UB:
 112          output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 113          emit_sz = 4 * sizeof(ubyte);
 114          break;
 115       default:
 116          assert(0);
 117          output_format = PIPE_FORMAT_NONE;
 118          emit_sz = 0;
 119          break;
 120       }
 121
 122       hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 123       hw_key.element[i].input_buffer = src_buffer;
 124       hw_key.element[i].input_offset = src_offset;
 125       hw_key.element[i].output_format = output_format;
 126       hw_key.element[i].output_offset = dst_offset;
 127
 128       dst_offset += emit_sz;
 129    }
 130
 131    hw_key.nr_elements = vinfo->num_attribs;
 132    hw_key.output_stride = vinfo->size * 4;
 133
 134    if (!emit->translate ||
 135        translate_key_compare(&emit->translate->key, &hw_key) != 0)
 136    {
 137       translate_key_sanitize(&hw_key);
 138       emit->translate = translate_cache_find(emit->cache, &hw_key);
 139    }
 140 }
 141
 142
 143 void draw_pt_emit( struct pt_emit *emit,
 144                    const float (*vertex_data)[4],
 145                    unsigned vertex_count,
 146                    unsigned stride,
 147                    const ushort *elts,
 148                    unsigned count )
 149 {
 150    struct draw_context *draw = emit->draw;
 151    struct translate *translate = emit->translate;
 152    struct vbuf_render *render = draw->render;
 153    void *hw_verts;
 154
 155    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 156     */
 157    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 158
 159    /* XXX: and work out some way to coordinate the render primitive
 160     * between vbuf.c and here...
 161     */
 162    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 163       assert(0);
 164       return;
 165    }
 166
 167    hw_verts = render->allocate_vertices(render,
 168                                         (ushort)translate->key.output_stride,
 169                                         (ushort)vertex_count);
 170    if (!hw_verts) {
 171       assert(0);
 172       return;
 173    }
 174
 175    translate->set_buffer(translate,
 176                          0,
 177                          vertex_data,
 178                          stride );
 179
 180    translate->set_buffer(translate,
 181                          1,
 182                          &draw->rasterizer->point_size,
 183                          0);
 184
 185    translate->run( translate,
 186                    0,
 187                    vertex_count,
 188                    hw_verts );
 189
 190    render->draw(render,
 191                 elts,
 192                 count);
 193
 194    render->release_vertices(render,
 195                             hw_verts,
 196                             translate->key.output_stride,
 197                             vertex_count);
 198 }
 199
 200
 201 void draw_pt_emit_linear(struct pt_emit *emit,
 202                          const float (*vertex_data)[4],
 203                          unsigned vertex_count,
 204                          unsigned stride,
 205                          unsigned start,
 206                          unsigned count)
 207 {
 208    struct draw_context *draw = emit->draw;
 209    struct translate *translate = emit->translate;
 210    struct vbuf_render *render = draw->render;
 211    void *hw_verts;
 212
 213 #if 0
 214    debug_printf("Linear emit\n");
 215 #endif
 216    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 217     */
 218    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 219
 220    /* XXX: and work out some way to coordinate the render primitive
 221     * between vbuf.c and here...
 222     */
 223    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 224       assert(0);
 225       return;
 226    }
 227
 228    hw_verts = render->allocate_vertices(render,
 229                                         (ushort)translate->key.output_stride,
 230                                         (ushort)count);
 231    if (!hw_verts) {
 232       assert(0);
 233       return;
 234    }
 235
 236    translate->set_buffer(translate, 0,
 237                          vertex_data, stride);
 238
 239    translate->set_buffer(translate, 1,
 240                          &draw->rasterizer->point_size,
 241                          0);
 242
 243    translate->run(translate,
 244                   0,
 245                   vertex_count,
 246                   hw_verts);
 247
 248    render->draw_arrays(render, start, count);
 249
 250    render->release_vertices(render,
 251                             hw_verts,
 252                             translate->key.output_stride,
 253                             vertex_count);
 254 }
 255
 256 struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
 257 {
 258    struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
 259    if (!emit)
 260       return NULL;
 261
 262    emit->draw = draw;
 263    emit->cache = translate_cache_create();
 264    if (!emit->cache) {
 265       FREE(emit);
 266       return NULL;
 267    }
 268
 269    return emit;
 270 }
 271
 272 void draw_pt_emit_destroy( struct pt_emit *emit )
 273 {
 274    if (emit->cache)
 275       translate_cache_destroy(emit->cache);
 276
 277    FREE(emit);
 278 }