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 #include "util/u_format.h"
  37
  38 struct pt_emit {
  39    struct draw_context *draw;
  40
  41    struct translate *translate;
  42
  43    struct translate_cache *cache;
  44    unsigned prim;
  45
  46    const struct vertex_info *vinfo;
  47 };
  48
  49 void draw_pt_emit_prepare( struct pt_emit *emit,
  50                            unsigned prim,
  51                            unsigned *max_vertices )
  52 {
  53    struct draw_context *draw = emit->draw;
  54    const struct vertex_info *vinfo;
  55    unsigned dst_offset;
  56    struct translate_key hw_key;
  57    unsigned i;
  58    boolean ok;
  59
  60    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
  61     */
  62    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
  63
  64
  65    /* XXX: may need to defensively reset this later on as clipping can
  66     * clobber this state in the render backend.
  67     */
  68    emit->prim = prim;
  69
  70    ok = draw->render->set_primitive(draw->render, emit->prim);
  71    if (!ok) {
  72       assert(0);
  73       return;
  74    }
  75
  76    /* Must do this after set_primitive() above:
  77     */
  78    emit->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
  79
  80
  81    /* Translate from pipeline vertices to hw vertices.
  82     */
  83    dst_offset = 0;
  84    for (i = 0; i < vinfo->num_attribs; i++) {
  85       unsigned emit_sz = 0;
  86       unsigned src_buffer = 0;
  87       unsigned output_format;
  88       unsigned src_offset = (vinfo->attrib[i].src_index * 4 * sizeof(float) );
  89
  90       output_format = draw_translate_vinfo_format(vinfo->attrib[i].emit);
  91       emit_sz = draw_translate_vinfo_size(vinfo->attrib[i].emit);
  92
  93       /* doesn't handle EMIT_OMIT */
  94       assert(emit_sz != 0);
  95
  96       if (vinfo->attrib[i].emit == EMIT_1F_PSIZE) {
  97          src_buffer = 1;
  98          src_offset = 0;
  99       }
 100
 101       hw_key.element[i].type = TRANSLATE_ELEMENT_NORMAL;
 102       hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 103       hw_key.element[i].input_buffer = src_buffer;
 104       hw_key.element[i].input_offset = src_offset;
 105       hw_key.element[i].instance_divisor = 0;
 106       hw_key.element[i].output_format = output_format;
 107       hw_key.element[i].output_offset = dst_offset;
 108
 109       dst_offset += emit_sz;
 110    }
 111
 112    hw_key.nr_elements = vinfo->num_attribs;
 113    hw_key.output_stride = vinfo->size * 4;
 114
 115    if (!emit->translate ||
 116        translate_key_compare(&emit->translate->key, &hw_key) != 0)
 117    {
 118       translate_key_sanitize(&hw_key);
 119       emit->translate = translate_cache_find(emit->cache, &hw_key);
 120    }
 121
 122    *max_vertices = (draw->render->max_vertex_buffer_bytes /
 123                     (vinfo->size * 4));
 124
 125    /* even number */
 126    *max_vertices = *max_vertices & ~1;
 127 }
 128
 129
 130 void draw_pt_emit( struct pt_emit *emit,
 131                    const float (*vertex_data)[4],
 132                    unsigned vertex_count,
 133                    unsigned stride,
 134                    const ushort *elts,
 135                    unsigned count )
 136 {
 137    struct draw_context *draw = emit->draw;
 138    struct translate *translate = emit->translate;
 139    struct vbuf_render *render = draw->render;
 140    void *hw_verts;
 141
 142    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 143     */
 144    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 145
 146    if (vertex_count == 0)
 147       return;
 148
 149    if (vertex_count >= UNDEFINED_VERTEX_ID) {
 150       assert(0);
 151       return;
 152    }
 153
 154    /* XXX: and work out some way to coordinate the render primitive
 155     * between vbuf.c and here...
 156     */
 157    if (!draw->render->set_primitive(draw->render, emit->prim)) {
 158       assert(0);
 159       return;
 160    }
 161
 162    render->allocate_vertices(render,
 163                              (ushort)translate->key.output_stride,
 164                              (ushort)vertex_count);
 165
 166    hw_verts = render->map_vertices( render );
 167    if (!hw_verts) {
 168       assert(0);
 169       return;
 170    }
 171
 172    translate->set_buffer(translate,
 173                          0,
 174                          vertex_data,
 175                          stride,
 176                          ~0);
 177
 178    translate->set_buffer(translate,
 179                          1,
 180                          &draw->rasterizer->point_size,
 181                          0,
 182                          ~0);
 183
 184    translate->run( translate,
 185                    0,
 186                    vertex_count,
 187                    draw->instance_id,
 188                    hw_verts );
 189
 190    render->unmap_vertices( render,
 191                            0,
 192                            vertex_count - 1 );
 193
 194    render->draw_elements(render,
 195                          elts,
 196                          count);
 197
 198    render->release_vertices(render);
 199 }
 200
 201
 202 void draw_pt_emit_linear(struct pt_emit *emit,
 203                          const float (*vertex_data)[4],
 204                          unsigned stride,
 205                          unsigned count)
 206 {
 207    struct draw_context *draw = emit->draw;
 208    struct translate *translate = emit->translate;
 209    struct vbuf_render *render = draw->render;
 210    void *hw_verts;
 211
 212 #if 0
 213    debug_printf("Linear emit\n");
 214 #endif
 215    /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 216     */
 217    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 218
 219    if (count >= UNDEFINED_VERTEX_ID)
 220       goto fail;
 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       goto fail;
 227
 228    if (!render->allocate_vertices(render,
 229                                   (ushort)translate->key.output_stride,
 230                                   (ushort)count))
 231       goto fail;
 232
 233    hw_verts = render->map_vertices( render );
 234    if (!hw_verts)
 235       goto fail;
 236
 237    translate->set_buffer(translate, 0,
 238                          vertex_data, stride, count - 1);
 239
 240    translate->set_buffer(translate, 1,
 241                          &draw->rasterizer->point_size,
 242                          0, ~0);
 243
 244    translate->run(translate,
 245                   0,
 246                   count,
 247                   draw->instance_id,
 248                   hw_verts);
 249
 250    if (0) {
 251       unsigned i;
 252       for (i = 0; i < 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    render->unmap_vertices( render, 0, count - 1 );
 261
 262    render->draw_arrays(render, 0, count);
 263
 264    render->release_vertices(render);
 265
 266    return;
 267
 268 fail:
 269    assert(0);
 270    return;
 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 }