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