src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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
  35 struct fetch_pipeline_middle_end {
  36    struct draw_pt_middle_end base;
  37    struct draw_context *draw;
  38
  39    const ubyte *input_buf[2];
  40
  41    struct {
  42       const ubyte **input_buf;
  43       unsigned input_offset;
  44       unsigned output_offset;
  45
  46       void (*emit)( const float *attrib, void *ptr );
  47    } translate[PIPE_MAX_ATTRIBS];
  48    unsigned nr_translate;
  49
  50    unsigned pipeline_vertex_size;
  51    unsigned hw_vertex_size;
  52    unsigned prim;
  53 };
  54
  55
  56 static void emit_NULL( const float *attrib,
  57                        void *ptr )
  58 {
  59 }
  60
  61 static void emit_R32_FLOAT( const float *attrib,
  62                             void *ptr )
  63 {
  64    float *out = (float *)ptr;
  65    out[0] = attrib[0];
  66 }
  67
  68 static void emit_R32G32_FLOAT( const float *attrib,
  69                                void *ptr )
  70 {
  71    float *out = (float *)ptr;
  72    out[0] = attrib[0];
  73    out[1] = attrib[1];
  74 }
  75
  76 static void emit_R32G32B32_FLOAT( const float *attrib,
  77                                   void *ptr )
  78 {
  79    float *out = (float *)ptr;
  80    out[0] = attrib[0];
  81    out[1] = attrib[1];
  82    out[2] = attrib[2];
  83 }
  84
  85 static void emit_R32G32B32A32_FLOAT( const float *attrib,
  86                                      void *ptr )
  87 {
  88    float *out = (float *)ptr;
  89    out[0] = attrib[0];
  90    out[1] = attrib[1];
  91    out[2] = attrib[2];
  92    out[3] = attrib[3];
  93 }
  94
  95 static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
  96                                     unsigned prim )
  97 {
  98    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
  99    struct draw_context *draw = fpme->draw;
 100    unsigned i;
 101    boolean ok;
 102    const struct vertex_info *vinfo;
 103    unsigned dst_offset;
 104
 105    fpme->prim = prim;
 106
 107    ok = draw->render->set_primitive(draw->render, prim);
 108    if (!ok) {
 109       assert(0);
 110       return;
 111    }
 112
 113    /* Must do this after set_primitive() above:
 114     */
 115    vinfo = draw->render->get_vertex_info(draw->render);
 116
 117
 118    /* In passthrough mode, need to translate from vertex shader
 119     * outputs to hw vertices.
 120     */
 121    dst_offset = 0;
 122    for (i = 0; i < vinfo->num_attribs; i++) {
 123       unsigned emit_sz = 0;
 124       unsigned src_buffer = 0;
 125       unsigned src_offset = (sizeof(struct vertex_header) +
 126                              vinfo->src_index[i] * 4 * sizeof(float) );
 127
 128
 129
 130       switch (vinfo->emit[i]) {
 131       case EMIT_4F:
 132          fpme->translate[i].emit = emit_R32G32B32A32_FLOAT;
 133          emit_sz = 4 * sizeof(float);
 134          break;
 135       case EMIT_3F:
 136          fpme->translate[i].emit = emit_R32G32B32_FLOAT;
 137          emit_sz = 3 * sizeof(float);
 138          break;
 139       case EMIT_2F:
 140          fpme->translate[i].emit = emit_R32G32_FLOAT;
 141          emit_sz = 2 * sizeof(float);
 142          break;
 143       case EMIT_1F:
 144          fpme->translate[i].emit = emit_R32_FLOAT;
 145          emit_sz = 1 * sizeof(float);
 146          break;
 147       case EMIT_1F_PSIZE:
 148          fpme->translate[i].emit = emit_R32_FLOAT;
 149          emit_sz = 1 * sizeof(float);
 150          src_buffer = 1;
 151          src_offset = 0;
 152          break;
 153       default:
 154          assert(0);
 155          fpme->translate[i].emit = emit_NULL;
 156          emit_sz = 0;
 157          break;
 158       }
 159
 160       fpme->translate[i].input_buf = &fpme->input_buf[src_buffer];
 161       fpme->translate[i].input_offset = src_offset;
 162       fpme->translate[i].output_offset = dst_offset;
 163       dst_offset += emit_sz;
 164    }
 165
 166    fpme->nr_translate = vinfo->num_attribs;
 167    fpme->hw_vertex_size = vinfo->size * 4;
 168
 169    //fpme->pipeline_vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
 170    fpme->pipeline_vertex_size = MAX_VERTEX_ALLOCATION;
 171    fpme->hw_vertex_size = vinfo->size * 4;
 172 }
 173
 174
 175
 176
 177 static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
 178                                 const unsigned *fetch_elts,
 179                                 unsigned fetch_count,
 180                                 const ushort *draw_elts,
 181                                 unsigned draw_count )
 182 {
 183    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 184    struct draw_context *draw = fpme->draw;
 185    struct draw_vertex_shader *shader = draw->vertex_shader;
 186    char *pipeline_verts;
 187
 188    pipeline_verts = MALLOC(fpme->pipeline_vertex_size *
 189                            fetch_count);
 190
 191    if (!pipeline_verts) {
 192       assert(0);
 193       return;
 194    }
 195
 196
 197    /* Shade
 198     */
 199    shader->prepare(shader, draw);
 200    if (shader->run(shader, draw, fetch_elts, fetch_count, pipeline_verts,
 201                    fpme->pipeline_vertex_size)) {
 202       /* Run the pipeline */
 203       draw_pt_run_pipeline( fpme->draw,
 204                             fpme->prim,
 205                             pipeline_verts,
 206                             fpme->pipeline_vertex_size,
 207                             fetch_count,
 208                             draw_elts,
 209                             draw_count );
 210    } else {
 211       unsigned i, j;
 212       void *hw_verts;
 213       char *out_buf;
 214
 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       hw_verts = draw->render->allocate_vertices(draw->render,
 220                                                  (ushort)fpme->hw_vertex_size,
 221                                                  (ushort)fetch_count);
 222       if (!hw_verts) {
 223          assert(0);
 224          return;
 225       }
 226
 227       out_buf = (char *)hw_verts;
 228       fpme->input_buf[0] = (const ubyte *)pipeline_verts;
 229       fpme->input_buf[1] = (const ubyte *)&fpme->draw->rasterizer->point_size;
 230
 231       for (i = 0; i < fetch_count; i++) {
 232
 233          for (j = 0; j < fpme->nr_translate; j++) {
 234
 235             const float *attrib = (const float *)( (*fpme->translate[i].input_buf) +
 236                                                    fpme->translate[i].input_offset );
 237
 238             char *dest = out_buf + fpme->translate[i].output_offset;
 239
 240             /*debug_printf("emiting [%f, %f, %f, %f]\n",
 241                          attrib[0], attrib[1],
 242                          attrib[2], attrib[3]);*/
 243
 244             fpme->translate[j].emit(attrib, dest);
 245          }
 246
 247          fpme->input_buf[0] += fpme->pipeline_vertex_size;
 248       }
 249
 250       draw->render->draw(draw->render,
 251                          draw_elts,
 252                          draw_count);
 253
 254       draw->render->release_vertices(draw->render,
 255                                      hw_verts,
 256                                      fpme->hw_vertex_size,
 257                                      fetch_count);
 258    }
 259
 260
 261    FREE(pipeline_verts);
 262 }
 263
 264
 265
 266 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 267 {
 268    /* nothing to do */
 269 }
 270
 271 static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
 272 {
 273    FREE(middle);
 274 }
 275
 276
 277 struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
 278 {
 279    struct fetch_pipeline_middle_end *fetch_pipeline = CALLOC_STRUCT( fetch_pipeline_middle_end );
 280
 281    fetch_pipeline->base.prepare = fetch_pipeline_prepare;
 282    fetch_pipeline->base.run     = fetch_pipeline_run;
 283    fetch_pipeline->base.finish  = fetch_pipeline_finish;
 284    fetch_pipeline->base.destroy = fetch_pipeline_destroy;
 285
 286    fetch_pipeline->draw = draw;
 287
 288    return &fetch_pipeline->base;
 289 }