src/gallium/drivers/softpipe/sp_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  * Copyright 2008 VMware, Inc.  All rights reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /* Author:
  30  *    Keith Whitwell <keith@tungstengraphics.com>
  31  */
  32
  33 #include "draw/draw_context.h"
  34 #include "draw/draw_vbuf.h"
  35 #include "pipe/p_defines.h"
  36 #include "util/u_math.h"
  37 #include "util/u_memory.h"
  38 #include "util/u_inlines.h"
  39 #include "tgsi/tgsi_exec.h"
  40 #include "sp_clear.h"
  41 #include "sp_context.h"
  42 #include "sp_flush.h"
  43 #include "sp_prim_vbuf.h"
  44 #include "sp_state.h"
  45 #include "sp_surface.h"
  46 #include "sp_tile_cache.h"
  47 #include "sp_tex_tile_cache.h"
  48 #include "sp_texture.h"
  49 #include "sp_query.h"
  50
  51
  52
  53 /**
  54  * Map any drawing surfaces which aren't already mapped
  55  */
  56 void
  57 softpipe_map_transfers(struct softpipe_context *sp)
  58 {
  59    unsigned i;
  60
  61    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  62       sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
  63    }
  64
  65    sp_tile_cache_map_transfers(sp->zsbuf_cache);
  66 }
  67
  68
  69 /**
  70  * Unmap any mapped drawing surfaces
  71  */
  72 void
  73 softpipe_unmap_transfers(struct softpipe_context *sp)
  74 {
  75    uint i;
  76
  77    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  78       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  79    }
  80
  81    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  82 }
  83
  84
  85 static void
  86 softpipe_destroy( struct pipe_context *pipe )
  87 {
  88    struct softpipe_context *softpipe = softpipe_context( pipe );
  89    uint i;
  90
  91    if (softpipe->draw)
  92       draw_destroy( softpipe->draw );
  93
  94    softpipe->quad.shade->destroy( softpipe->quad.shade );
  95    softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
  96    softpipe->quad.blend->destroy( softpipe->quad.blend );
  97    softpipe->quad.pstipple->destroy( softpipe->quad.pstipple );
  98
  99    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 100       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
 101       pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
 102    }
 103
 104    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 105    pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
 106
 107    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 108       sp_destroy_tex_tile_cache(softpipe->tex_cache[i]);
 109       pipe_sampler_view_reference(&softpipe->sampler_views[i], NULL);
 110    }
 111
 112    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 113       sp_destroy_tex_tile_cache(softpipe->vertex_tex_cache[i]);
 114       pipe_sampler_view_reference(&softpipe->vertex_sampler_views[i], NULL);
 115    }
 116
 117    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 118       sp_destroy_tex_tile_cache(softpipe->geometry_tex_cache[i]);
 119       pipe_sampler_view_reference(&softpipe->geometry_sampler_views[i], NULL);
 120    }
 121
 122    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 123       uint j;
 124
 125       for (j = 0; j < PIPE_MAX_CONSTANT_BUFFERS; j++) {
 126          if (softpipe->constants[i][j]) {
 127             pipe_resource_reference(&softpipe->constants[i][j], NULL);
 128          }
 129       }
 130    }
 131
 132    tgsi_exec_machine_destroy(softpipe->fs_machine);
 133
 134    FREE( softpipe );
 135 }
 136
 137
 138 /**
 139  * if (the texture is being used as a framebuffer surface)
 140  *    return PIPE_REFERENCED_FOR_WRITE
 141  * else if (the texture is a bound texture source)
 142  *    return PIPE_REFERENCED_FOR_READ
 143  * else
 144  *    return PIPE_UNREFERENCED
 145  */
 146 static unsigned int
 147 softpipe_is_resource_referenced( struct pipe_context *pipe,
 148                                 struct pipe_resource *texture,
 149                                 unsigned face, unsigned level)
 150 {
 151    struct softpipe_context *softpipe = softpipe_context( pipe );
 152    unsigned i;
 153
 154    if (texture->target == PIPE_BUFFER)
 155       return PIPE_UNREFERENCED;
 156
 157    /* check if any of the bound drawing surfaces are this texture */
 158    if (softpipe->dirty_render_cache) {
 159       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 160          if (softpipe->framebuffer.cbufs[i] &&
 161              softpipe->framebuffer.cbufs[i]->texture == texture) {
 162             return PIPE_REFERENCED_FOR_WRITE;
 163          }
 164       }
 165       if (softpipe->framebuffer.zsbuf &&
 166           softpipe->framebuffer.zsbuf->texture == texture) {
 167          return PIPE_REFERENCED_FOR_WRITE;
 168       }
 169    }
 170
 171    /* check if any of the tex_cache textures are this texture */
 172    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 173       if (softpipe->tex_cache[i] &&
 174           softpipe->tex_cache[i]->texture == texture)
 175          return PIPE_REFERENCED_FOR_READ;
 176    }
 177    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 178       if (softpipe->vertex_tex_cache[i] &&
 179           softpipe->vertex_tex_cache[i]->texture == texture)
 180          return PIPE_REFERENCED_FOR_READ;
 181    }
 182    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 183       if (softpipe->geometry_tex_cache[i] &&
 184           softpipe->geometry_tex_cache[i]->texture == texture)
 185          return PIPE_REFERENCED_FOR_READ;
 186    }
 187
 188    return PIPE_UNREFERENCED;
 189 }
 190
 191
 192
 193
 194 static void
 195 softpipe_render_condition( struct pipe_context *pipe,
 196                            struct pipe_query *query,
 197                            uint mode )
 198 {
 199    struct softpipe_context *softpipe = softpipe_context( pipe );
 200
 201    softpipe->render_cond_query = query;
 202    softpipe->render_cond_mode = mode;
 203 }
 204
 205
 206
 207 struct pipe_context *
 208 softpipe_create_context( struct pipe_screen *screen,
 209                          void *priv )
 210 {
 211    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 212    uint i;
 213
 214    util_init_math();
 215
 216 #ifdef PIPE_ARCH_X86
 217    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 218 #else
 219    softpipe->use_sse = FALSE;
 220 #endif
 221
 222    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 223    softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
 224
 225    softpipe->pipe.winsys = NULL;
 226    softpipe->pipe.screen = screen;
 227    softpipe->pipe.destroy = softpipe_destroy;
 228    softpipe->pipe.priv = priv;
 229
 230    /* state setters */
 231    softpipe_init_blend_funcs(&softpipe->pipe);
 232    softpipe_init_clip_funcs(&softpipe->pipe);
 233    softpipe_init_rasterizer_funcs(&softpipe->pipe);
 234    softpipe_init_sampler_funcs(&softpipe->pipe);
 235    softpipe_init_shader_funcs(&softpipe->pipe);
 236    softpipe_init_streamout_funcs(&softpipe->pipe);
 237    softpipe_init_vertex_funcs(&softpipe->pipe);
 238
 239    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 240
 241    softpipe->pipe.draw_vbo = softpipe_draw_vbo;
 242    softpipe->pipe.draw_stream_output = softpipe_draw_stream_output;
 243
 244    softpipe->pipe.clear = softpipe_clear;
 245    softpipe->pipe.flush = softpipe_flush;
 246
 247    softpipe->pipe.is_resource_referenced = softpipe_is_resource_referenced;
 248
 249    softpipe_init_query_funcs( softpipe );
 250    softpipe_init_texture_funcs( &softpipe->pipe );
 251
 252    softpipe->pipe.render_condition = softpipe_render_condition;
 253
 254    /*
 255     * Alloc caches for accessing drawing surfaces and textures.
 256     * Must be before quad stage setup!
 257     */
 258    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 259       softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
 260    softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
 261
 262    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 263       softpipe->tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 264    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 265       softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 266    }
 267    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 268       softpipe->geometry_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 269    }
 270
 271    softpipe->fs_machine = tgsi_exec_machine_create();
 272
 273    /* setup quad rendering stages */
 274    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 275    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 276    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 277    softpipe->quad.pstipple = sp_quad_polygon_stipple_stage(softpipe);
 278
 279
 280    /*
 281     * Create drawing context and plug our rendering stage into it.
 282     */
 283    softpipe->draw = draw_create(&softpipe->pipe);
 284    if (!softpipe->draw)
 285       goto fail;
 286
 287    draw_texture_samplers(softpipe->draw,
 288                          PIPE_SHADER_VERTEX,
 289                          PIPE_MAX_VERTEX_SAMPLERS,
 290                          (struct tgsi_sampler **)
 291                             softpipe->tgsi.vert_samplers_list);
 292
 293    draw_texture_samplers(softpipe->draw,
 294                          PIPE_SHADER_GEOMETRY,
 295                          PIPE_MAX_GEOMETRY_SAMPLERS,
 296                          (struct tgsi_sampler **)
 297                             softpipe->tgsi.geom_samplers_list);
 298
 299    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 300       softpipe->no_rast = TRUE;
 301
 302    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 303    if (!softpipe->vbuf_backend)
 304       goto fail;
 305
 306    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 307    if (!softpipe->vbuf)
 308       goto fail;
 309
 310    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 311    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 312
 313
 314    /* plug in AA line/point stages */
 315    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 316    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 317
 318    /* Do polygon stipple w/ texture map + frag prog? */
 319 #if DO_PSTIPPLE_IN_DRAW_MODULE
 320    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 321 #endif
 322
 323    draw_wide_point_sprites(softpipe->draw, TRUE);
 324
 325    sp_init_surface_functions(softpipe);
 326
 327    return &softpipe->pipe;
 328
 329  fail:
 330    softpipe_destroy(&softpipe->pipe);
 331    return NULL;
 332 }