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                            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->src_index[i] * 4 * sizeof(float) );
  88
  89
  90
  91       switch (vinfo->emit[i]) {
  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
 148
 149 void draw_pt_emit( struct pt_emit *emit,
 150                    const float (*vertex_data)[4],
 151                    unsigned vertex_count,
 152                    unsigned stride,
 153                    const ushort *elts,
 154                    unsigned count )
 155 {
 156    struct draw_context *draw = emit->draw;
 157    struct translate *translate = emit->translate;
 158    struct vbuf_render *render = draw->render;
 159    void *hw_verts;
 160
 161    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 162     */
 163    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 164
 165    /* XXX: and work out some way to coordinate the render primitive
 166     * between vbuf.c and here...
 167     */
 168    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 169       assert(0);
 170       return;
 171    }
 172
 173    hw_verts = render->allocate_vertices(render,
 174                                         (ushort)translate->key.output_stride,
 175                                         (ushort)vertex_count);
 176    if (!hw_verts) {
 177       assert(0);
 178       return;
 179    }
 180
 181    translate->set_buffer(translate,
 182                          0,
 183                          vertex_data,
 184                          stride );
 185
 186    translate->set_buffer(translate,
 187                          1,
 188                          &draw->rasterizer->point_size,
 189                          0);
 190
 191    translate->run( translate,
 192                    0,
 193                    vertex_count,
 194                    hw_verts );
 195
 196    render->draw(render,
 197                 elts,
 198                 count);
 199
 200    render->release_vertices(render,
 201                             hw_verts,
 202                             translate->key.output_stride,
 203                             vertex_count);
 204 }
 205
 206
 207 void draw_pt_emit_linear(struct pt_emit *emit,
 208                          const float (*vertex_data)[4],
 209                          unsigned vertex_count,
 210                          unsigned stride,
 211                          unsigned start,
 212                          unsigned count)
 213 {
 214    struct draw_context *draw = emit->draw;
 215    struct translate *translate = emit->translate;
 216    struct vbuf_render *render = draw->render;
 217    void *hw_verts;
 218
 219 #if 0
 220    debug_printf("Linear emit\n");
 221 #endif
 222    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 223     */
 224    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 225
 226    /* XXX: and work out some way to coordinate the render primitive
 227     * between vbuf.c and here...
 228     */
 229    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 230       assert(0);
 231       return;
 232    }
 233
 234    hw_verts = render->allocate_vertices(render,
 235                                         (ushort)translate->key.output_stride,
 236                                         (ushort)count);
 237    if (!hw_verts) {
 238       assert(0);
 239       return;
 240    }
 241
 242    translate->set_buffer(translate, 0,
 243                          vertex_data, stride);
 244
 245    translate->set_buffer(translate, 1,
 246                          &draw->rasterizer->point_size,
 247                          0);
 248
 249    translate->run(translate,
 250                   0,
 251                   vertex_count,
 252                   hw_verts);
 253
 254    if (0) {
 255       unsigned i;
 256       for (i = 0; i < vertex_count; i++) {
 257          debug_printf("\n\n%s vertex %d:\n", __FUNCTION__, i);
 258          draw_dump_emitted_vertex( emit->vinfo,
 259                                    (const uint8_t *)hw_verts +
 260                                    translate->key.output_stride * i );
 261       }
 262    }
 263
 264
 265    render->draw_arrays(render, start, count);
 266
 267    render->release_vertices(render,
 268                             hw_verts,
 269                             translate->key.output_stride,
 270                             vertex_count);
 271 }
 272
 273 struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
 274 {
 275    struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
 276    if (!emit)
 277       return NULL;
 278
 279    emit->draw = draw;
 280    emit->cache = translate_cache_create();
 281    if (!emit->cache) {
 282       FREE(emit);
 283       return NULL;
 284    }
 285
 286    return emit;
 287 }
 288
 289 void draw_pt_emit_destroy( struct pt_emit *emit )
 290 {
 291    if (emit->cache)
 292       translate_cache_destroy(emit->cache);
 293
 294    FREE(emit);
 295 }