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    const struct vertex_info *vinfo;
  46 };
  47
  48 void draw_pt_emit_prepare( struct pt_emit *emit,
  49                            unsigned prim )
  50 {
  51    struct draw_context *draw = emit->draw;
  52    const struct vertex_info *vinfo;
  53    unsigned dst_offset;
  54    struct translate_key hw_key;
  55    unsigned i;
  56    boolean ok;
  57
  58    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
  59     */
  60    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
  61
  62
  63    /* XXX: may need to defensively reset this later on as clipping can
  64     * clobber this state in the render backend.
  65     */
  66    emit->prim = prim;
  67
  68    ok = draw->render->set_primitive(draw->render, emit->prim);
  69    if (!ok) {
  70       assert(0);
  71       return;
  72    }
  73
  74    /* Must do this after set_primitive() above:
  75     */
  76    emit->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
  77
  78
  79    /* Translate from pipeline vertices to hw vertices.
  80     */
  81    dst_offset = 0;
  82    for (i = 0; i < vinfo->num_attribs; i++) {
  83       unsigned emit_sz = 0;
  84       unsigned src_buffer = 0;
  85       unsigned output_format;
  86       unsigned src_offset = (vinfo->src_index[i] * 4 * sizeof(float) );
  87
  88
  89
  90       switch (vinfo->emit[i]) {
  91       case EMIT_4F:
  92          output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
  93          emit_sz = 4 * sizeof(float);
  94          break;
  95       case EMIT_3F:
  96          output_format = PIPE_FORMAT_R32G32B32_FLOAT;
  97          emit_sz = 3 * sizeof(float);
  98          break;
  99       case EMIT_2F:
 100          output_format = PIPE_FORMAT_R32G32_FLOAT;
 101          emit_sz = 2 * sizeof(float);
 102          break;
 103       case EMIT_1F:
 104          output_format = PIPE_FORMAT_R32_FLOAT;
 105          emit_sz = 1 * sizeof(float);
 106          break;
 107       case EMIT_1F_PSIZE:
 108          output_format = PIPE_FORMAT_R32_FLOAT;
 109          emit_sz = 1 * sizeof(float);
 110          src_buffer = 1;
 111          src_offset = 0;
 112          break;
 113       case EMIT_4UB:
 114          output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 115          emit_sz = 4 * sizeof(ubyte);
 116          break;
 117       default:
 118          assert(0);
 119          output_format = PIPE_FORMAT_NONE;
 120          emit_sz = 0;
 121          break;
 122       }
 123
 124       hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 125       hw_key.element[i].input_buffer = src_buffer;
 126       hw_key.element[i].input_offset = src_offset;
 127       hw_key.element[i].output_format = output_format;
 128       hw_key.element[i].output_offset = dst_offset;
 129
 130       dst_offset += emit_sz;
 131    }
 132
 133    hw_key.nr_elements = vinfo->num_attribs;
 134    hw_key.output_stride = vinfo->size * 4;
 135
 136    if (!emit->translate ||
 137        translate_key_compare(&emit->translate->key, &hw_key) != 0)
 138    {
 139       translate_key_sanitize(&hw_key);
 140       emit->translate = translate_cache_find(emit->cache, &hw_key);
 141    }
 142 }
 143
 144
 145 void draw_pt_emit( struct pt_emit *emit,
 146                    const float (*vertex_data)[4],
 147                    unsigned vertex_count,
 148                    unsigned stride,
 149                    const ushort *elts,
 150                    unsigned count )
 151 {
 152    struct draw_context *draw = emit->draw;
 153    struct translate *translate = emit->translate;
 154    struct vbuf_render *render = draw->render;
 155    void *hw_verts;
 156
 157    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 158     */
 159    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 160
 161    /* XXX: and work out some way to coordinate the render primitive
 162     * between vbuf.c and here...
 163     */
 164    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 165       assert(0);
 166       return;
 167    }
 168
 169    hw_verts = render->allocate_vertices(render,
 170                                         (ushort)translate->key.output_stride,
 171                                         (ushort)vertex_count);
 172    if (!hw_verts) {
 173       assert(0);
 174       return;
 175    }
 176
 177    translate->set_buffer(translate,
 178                          0,
 179                          vertex_data,
 180                          stride );
 181
 182    translate->set_buffer(translate,
 183                          1,
 184                          &draw->rasterizer->point_size,
 185                          0);
 186
 187    translate->run( translate,
 188                    0,
 189                    vertex_count,
 190                    hw_verts );
 191
 192    render->draw(render,
 193                 elts,
 194                 count);
 195
 196    render->release_vertices(render,
 197                             hw_verts,
 198                             translate->key.output_stride,
 199                             vertex_count);
 200 }
 201
 202
 203 void draw_pt_emit_linear(struct pt_emit *emit,
 204                          const float (*vertex_data)[4],
 205                          unsigned vertex_count,
 206                          unsigned stride,
 207                          unsigned start,
 208                          unsigned count)
 209 {
 210    struct draw_context *draw = emit->draw;
 211    struct translate *translate = emit->translate;
 212    struct vbuf_render *render = draw->render;
 213    void *hw_verts;
 214
 215 #if 0
 216    debug_printf("Linear emit\n");
 217 #endif
 218    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 219     */
 220    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 221
 222    /* XXX: and work out some way to coordinate the render primitive
 223     * between vbuf.c and here...
 224     */
 225    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 226       assert(0);
 227       return;
 228    }
 229
 230    hw_verts = render->allocate_vertices(render,
 231                                         (ushort)translate->key.output_stride,
 232                                         (ushort)count);
 233    if (!hw_verts) {
 234       assert(0);
 235       return;
 236    }
 237
 238    translate->set_buffer(translate, 0,
 239                          vertex_data, stride);
 240
 241    translate->set_buffer(translate, 1,
 242                          &draw->rasterizer->point_size,
 243                          0);
 244
 245    translate->run(translate,
 246                   0,
 247                   vertex_count,
 248                   hw_verts);
 249
 250    if (0) {
 251       unsigned i;
 252       for (i = 0; i < vertex_count; i++) {
 253          debug_printf("\n\n%s vertex %d:\n", __FUNCTION__, i);
 254          draw_dump_emitted_vertex( emit->vinfo,
 255                                    (const uint8_t *)hw_verts +
 256                                    translate->key.output_stride * i );
 257       }
 258    }
 259
 260
 261    render->draw_arrays(render, start, count);
 262
 263    render->release_vertices(render,
 264                             hw_verts,
 265                             translate->key.output_stride,
 266                             vertex_count);
 267 }
 268
 269 struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
 270 {
 271    struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
 272    if (!emit)
 273       return NULL;
 274
 275    emit->draw = draw;
 276    emit->cache = translate_cache_create();
 277    if (!emit->cache) {
 278       FREE(emit);
 279       return NULL;
 280    }
 281
 282    return emit;
 283 }
 284
 285 void draw_pt_emit_destroy( struct pt_emit *emit )
 286 {
 287    if (emit->cache)
 288       translate_cache_destroy(emit->cache);
 289
 290    FREE(emit);
 291 }