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
  96 emit_B8G8R8A8_UNORM( const float *attrib, void *ptr)
  97 {
  98    ubyte *out = (ubyte *)ptr;
  99    out[2] = float_to_ubyte(attrib[0]);
 100    out[1] = float_to_ubyte(attrib[1]);
 101    out[0] = float_to_ubyte(attrib[2]);
 102    out[3] = float_to_ubyte(attrib[3]);
 103 }
 104
 105 static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
 106                                     unsigned prim )
 107 {
 108    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 109    struct draw_context *draw = fpme->draw;
 110    unsigned i;
 111    boolean ok;
 112    const struct vertex_info *vinfo;
 113    unsigned dst_offset;
 114
 115    fpme->prim = prim;
 116
 117    ok = draw->render->set_primitive(draw->render, prim);
 118    if (!ok) {
 119       assert(0);
 120       return;
 121    }
 122
 123    /* Must do this after set_primitive() above:
 124     */
 125    vinfo = draw->render->get_vertex_info(draw->render);
 126
 127
 128    /* In passthrough mode, need to translate from vertex shader
 129     * outputs to hw vertices.
 130     */
 131    dst_offset = 0;
 132    for (i = 0; i < vinfo->num_attribs; i++) {
 133       unsigned emit_sz = 0;
 134       unsigned src_buffer = 0;
 135       unsigned src_offset = (sizeof(struct vertex_header) +
 136                              vinfo->src_index[i] * 4 * sizeof(float) );
 137
 138
 139
 140       switch (vinfo->emit[i]) {
 141       case EMIT_4F:
 142          fpme->translate[i].emit = emit_R32G32B32A32_FLOAT;
 143          emit_sz = 4 * sizeof(float);
 144          break;
 145       case EMIT_3F:
 146          fpme->translate[i].emit = emit_R32G32B32_FLOAT;
 147          emit_sz = 3 * sizeof(float);
 148          break;
 149       case EMIT_2F:
 150          fpme->translate[i].emit = emit_R32G32_FLOAT;
 151          emit_sz = 2 * sizeof(float);
 152          break;
 153       case EMIT_1F:
 154          fpme->translate[i].emit = emit_R32_FLOAT;
 155          emit_sz = 1 * sizeof(float);
 156          break;
 157       case EMIT_1F_PSIZE:
 158          fpme->translate[i].emit = emit_R32_FLOAT;
 159          emit_sz = 1 * sizeof(float);
 160          src_buffer = 1;
 161          src_offset = 0;
 162          break;
 163       case EMIT_4UB:
 164          fpme->translate[i].emit = emit_B8G8R8A8_UNORM;
 165          emit_sz = 4 * sizeof(ubyte);
 166       default:
 167          assert(0);
 168          fpme->translate[i].emit = emit_NULL;
 169          emit_sz = 0;
 170          break;
 171       }
 172
 173       fpme->translate[i].input_buf = &fpme->input_buf[src_buffer];
 174       fpme->translate[i].input_offset = src_offset;
 175       fpme->translate[i].output_offset = dst_offset;
 176       dst_offset += emit_sz;
 177    }
 178
 179    fpme->nr_translate = vinfo->num_attribs;
 180    fpme->hw_vertex_size = vinfo->size * 4;
 181
 182    //fpme->pipeline_vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
 183    fpme->pipeline_vertex_size = MAX_VERTEX_ALLOCATION;
 184    fpme->hw_vertex_size = vinfo->size * 4;
 185 }
 186
 187
 188
 189
 190 static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
 191                                 const unsigned *fetch_elts,
 192                                 unsigned fetch_count,
 193                                 const ushort *draw_elts,
 194                                 unsigned draw_count )
 195 {
 196    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 197    struct draw_context *draw = fpme->draw;
 198    struct draw_vertex_shader *shader = draw->vertex_shader;
 199    char *pipeline_verts;
 200
 201    pipeline_verts = MALLOC(fpme->pipeline_vertex_size *
 202                            fetch_count);
 203
 204    if (!pipeline_verts) {
 205       assert(0);
 206       return;
 207    }
 208
 209
 210    /* Shade
 211     */
 212    shader->prepare(shader, draw);
 213    if (shader->run(shader, draw, fetch_elts, fetch_count, pipeline_verts,
 214                    fpme->pipeline_vertex_size)) {
 215       /* Run the pipeline */
 216       draw_pt_run_pipeline( fpme->draw,
 217                             fpme->prim,
 218                             pipeline_verts,
 219                             fpme->pipeline_vertex_size,
 220                             fetch_count,
 221                             draw_elts,
 222                             draw_count );
 223    } else {
 224       unsigned i, j;
 225       void *hw_verts;
 226       char *out_buf;
 227
 228       /* XXX: need to flush to get prim_vbuf.c to release its allocation??
 229        */
 230       draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 231
 232       hw_verts = draw->render->allocate_vertices(draw->render,
 233                                                  (ushort)fpme->hw_vertex_size,
 234                                                  (ushort)fetch_count);
 235       if (!hw_verts) {
 236          assert(0);
 237          return;
 238       }
 239
 240       out_buf = (char *)hw_verts;
 241       fpme->input_buf[0] = (const ubyte *)pipeline_verts;
 242       fpme->input_buf[1] = (const ubyte *)&fpme->draw->rasterizer->point_size;
 243
 244       for (i = 0; i < fetch_count; i++) {
 245
 246          for (j = 0; j < fpme->nr_translate; j++) {
 247
 248             const float *attrib = (const float *)( (*fpme->translate[j].input_buf) +
 249                                                    fpme->translate[j].input_offset );
 250
 251             char *dest = out_buf + fpme->translate[j].output_offset;
 252
 253             if (0)
 254                debug_printf("emiting [%f, %f, %f, %f]\n",
 255                             attrib[0], attrib[1],
 256                             attrib[2], attrib[3]);
 257
 258             fpme->translate[j].emit(attrib, dest);
 259          }
 260
 261          fpme->input_buf[0] += fpme->pipeline_vertex_size;
 262          out_buf += fpme->hw_vertex_size;
 263       }
 264
 265       draw->render->draw(draw->render,
 266                          draw_elts,
 267                          draw_count);
 268
 269       draw->render->release_vertices(draw->render,
 270                                      hw_verts,
 271                                      fpme->hw_vertex_size,
 272                                      fetch_count);
 273    }
 274
 275
 276    FREE(pipeline_verts);
 277 }
 278
 279
 280
 281 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 282 {
 283    /* nothing to do */
 284 }
 285
 286 static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
 287 {
 288    FREE(middle);
 289 }
 290
 291
 292 struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
 293 {
 294    struct fetch_pipeline_middle_end *fetch_pipeline = CALLOC_STRUCT( fetch_pipeline_middle_end );
 295
 296    fetch_pipeline->base.prepare = fetch_pipeline_prepare;
 297    fetch_pipeline->base.run     = fetch_pipeline_run;
 298    fetch_pipeline->base.finish  = fetch_pipeline_finish;
 299    fetch_pipeline->base.destroy = fetch_pipeline_destroy;
 300
 301    fetch_pipeline->draw = draw;
 302
 303    return &fetch_pipeline->base;
 304 }