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 "util/u_memory.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                            unsigned *max_vertices )
  51 {
  52    struct draw_context *draw = emit->draw;
  53    const struct vertex_info *vinfo;
  54    unsigned dst_offset;
  55    struct translate_key hw_key;
  56    unsigned i;
  57    boolean ok;
  58
  59    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
  60     */
  61    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
  62
  63
  64    /* XXX: may need to defensively reset this later on as clipping can
  65     * clobber this state in the render backend.
  66     */
  67    emit->prim = prim;
  68
  69    ok = draw->render->set_primitive(draw->render, emit->prim);
  70    if (!ok) {
  71       assert(0);
  72       return;
  73    }
  74
  75    /* Must do this after set_primitive() above:
  76     */
  77    emit->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
  78
  79
  80    /* Translate from pipeline vertices to hw vertices.
  81     */
  82    dst_offset = 0;
  83    for (i = 0; i < vinfo->num_attribs; i++) {
  84       unsigned emit_sz = 0;
  85       unsigned src_buffer = 0;
  86       unsigned output_format;
  87       unsigned src_offset = (vinfo->attrib[i].src_index * 4 * sizeof(float) );
  88
  89
  90
  91       switch (vinfo->attrib[i].emit) {
  92       case EMIT_4F:
  93          output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
  94          emit_sz = 4 * sizeof(float);
  95          break;
  96       case EMIT_3F:
  97          output_format = PIPE_FORMAT_R32G32B32_FLOAT;
  98          emit_sz = 3 * sizeof(float);
  99          break;
 100       case EMIT_2F:
 101          output_format = PIPE_FORMAT_R32G32_FLOAT;
 102          emit_sz = 2 * sizeof(float);
 103          break;
 104       case EMIT_1F:
 105          output_format = PIPE_FORMAT_R32_FLOAT;
 106          emit_sz = 1 * sizeof(float);
 107          break;
 108       case EMIT_1F_PSIZE:
 109          output_format = PIPE_FORMAT_R32_FLOAT;
 110          emit_sz = 1 * sizeof(float);
 111          src_buffer = 1;
 112          src_offset = 0;
 113          break;
 114       case EMIT_4UB:
 115          output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 116          emit_sz = 4 * sizeof(ubyte);
 117          break;
 118       default:
 119          assert(0);
 120          output_format = PIPE_FORMAT_NONE;
 121          emit_sz = 0;
 122          break;
 123       }
 124
 125       hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 126       hw_key.element[i].input_buffer = src_buffer;
 127       hw_key.element[i].input_offset = src_offset;
 128       hw_key.element[i].output_format = output_format;
 129       hw_key.element[i].output_offset = dst_offset;
 130
 131       dst_offset += emit_sz;
 132    }
 133
 134    hw_key.nr_elements = vinfo->num_attribs;
 135    hw_key.output_stride = vinfo->size * 4;
 136
 137    if (!emit->translate ||
 138        translate_key_compare(&emit->translate->key, &hw_key) != 0)
 139    {
 140       translate_key_sanitize(&hw_key);
 141       emit->translate = translate_cache_find(emit->cache, &hw_key);
 142    }
 143
 144    *max_vertices = (draw->render->max_vertex_buffer_bytes /
 145                     (vinfo->size * 4));
 146
 147    /* even number */
 148    *max_vertices = *max_vertices & ~1;
 149 }
 150
 151
 152 void draw_pt_emit( struct pt_emit *emit,
 153                    const float (*vertex_data)[4],
 154                    unsigned vertex_count,
 155                    unsigned stride,
 156                    const ushort *elts,
 157                    unsigned count )
 158 {
 159    struct draw_context *draw = emit->draw;
 160    struct translate *translate = emit->translate;
 161    struct vbuf_render *render = draw->render;
 162    void *hw_verts;
 163
 164    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 165     */
 166    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 167
 168    /* XXX: and work out some way to coordinate the render primitive
 169     * between vbuf.c and here...
 170     */
 171    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 172       assert(0);
 173       return;
 174    }
 175
 176    hw_verts = render->allocate_vertices(render,
 177                                         (ushort)translate->key.output_stride,
 178                                         (ushort)vertex_count);
 179    if (!hw_verts) {
 180       assert(0);
 181       return;
 182    }
 183
 184    translate->set_buffer(translate,
 185                          0,
 186                          vertex_data,
 187                          stride );
 188
 189    translate->set_buffer(translate,
 190                          1,
 191                          &draw->rasterizer->point_size,
 192                          0);
 193
 194    translate->run( translate,
 195                    0,
 196                    vertex_count,
 197                    hw_verts );
 198
 199    render->draw(render,
 200                 elts,
 201                 count);
 202
 203    render->release_vertices(render,
 204                             hw_verts,
 205                             translate->key.output_stride,
 206                             vertex_count);
 207 }
 208
 209
 210 void draw_pt_emit_linear(struct pt_emit *emit,
 211                          const float (*vertex_data)[4],
 212                          unsigned vertex_count,
 213                          unsigned stride,
 214                          unsigned start,
 215                          unsigned count)
 216 {
 217    struct draw_context *draw = emit->draw;
 218    struct translate *translate = emit->translate;
 219    struct vbuf_render *render = draw->render;
 220    void *hw_verts;
 221
 222 #if 0
 223    debug_printf("Linear emit\n");
 224 #endif
 225    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 226     */
 227    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 228
 229    /* XXX: and work out some way to coordinate the render primitive
 230     * between vbuf.c and here...
 231     */
 232    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 233       assert(0);
 234       return;
 235    }
 236
 237    hw_verts = render->allocate_vertices(render,
 238                                         (ushort)translate->key.output_stride,
 239                                         (ushort)count);
 240    if (!hw_verts) {
 241       assert(0);
 242       return;
 243    }
 244
 245    translate->set_buffer(translate, 0,
 246                          vertex_data, stride);
 247
 248    translate->set_buffer(translate, 1,
 249                          &draw->rasterizer->point_size,
 250                          0);
 251
 252    translate->run(translate,
 253                   0,
 254                   vertex_count,
 255                   hw_verts);
 256
 257    if (0) {
 258       unsigned i;
 259       for (i = 0; i < vertex_count; i++) {
 260          debug_printf("\n\n%s vertex %d:\n", __FUNCTION__, i);
 261          draw_dump_emitted_vertex( emit->vinfo,
 262                                    (const uint8_t *)hw_verts +
 263                                    translate->key.output_stride * i );
 264       }
 265    }
 266
 267
 268    render->draw_arrays(render, start, count);
 269
 270    render->release_vertices(render,
 271                             hw_verts,
 272                             translate->key.output_stride,
 273                             vertex_count);
 274 }
 275
 276 struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
 277 {
 278    struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
 279    if (!emit)
 280       return NULL;
 281
 282    emit->draw = draw;
 283    emit->cache = translate_cache_create();
 284    if (!emit->cache) {
 285       FREE(emit);
 286       return NULL;
 287    }
 288
 289    return emit;
 290 }
 291
 292 void draw_pt_emit_destroy( struct pt_emit *emit )
 293 {
 294    if (emit->cache)
 295       translate_cache_destroy(emit->cache);
 296
 297    FREE(emit);
 298 }