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    for (i = 0; i < softpipe->num_vertex_buffers; i++) {
 133       pipe_resource_reference(&softpipe->vertex_buffer[i].buffer, NULL);
 134    }
 135
 136    tgsi_exec_machine_destroy(softpipe->fs_machine);
 137
 138    FREE( softpipe );
 139 }
 140
 141
 142 /**
 143  * if (the texture is being used as a framebuffer surface)
 144  *    return PIPE_REFERENCED_FOR_WRITE
 145  * else if (the texture is a bound texture source)
 146  *    return PIPE_REFERENCED_FOR_READ
 147  * else
 148  *    return PIPE_UNREFERENCED
 149  */
 150 static unsigned int
 151 softpipe_is_resource_referenced( struct pipe_context *pipe,
 152                                  struct pipe_resource *texture,
 153                                  unsigned level, int layer)
 154 {
 155    struct softpipe_context *softpipe = softpipe_context( pipe );
 156    unsigned i;
 157
 158    if (texture->target == PIPE_BUFFER)
 159       return PIPE_UNREFERENCED;
 160
 161    /* check if any of the bound drawing surfaces are this texture */
 162    if (softpipe->dirty_render_cache) {
 163       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 164          if (softpipe->framebuffer.cbufs[i] &&
 165              softpipe->framebuffer.cbufs[i]->texture == texture) {
 166             return PIPE_REFERENCED_FOR_WRITE;
 167          }
 168       }
 169       if (softpipe->framebuffer.zsbuf &&
 170           softpipe->framebuffer.zsbuf->texture == texture) {
 171          return PIPE_REFERENCED_FOR_WRITE;
 172       }
 173    }
 174
 175    /* check if any of the tex_cache textures are this texture */
 176    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 177       if (softpipe->tex_cache[i] &&
 178           softpipe->tex_cache[i]->texture == texture)
 179          return PIPE_REFERENCED_FOR_READ;
 180    }
 181    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 182       if (softpipe->vertex_tex_cache[i] &&
 183           softpipe->vertex_tex_cache[i]->texture == texture)
 184          return PIPE_REFERENCED_FOR_READ;
 185    }
 186    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 187       if (softpipe->geometry_tex_cache[i] &&
 188           softpipe->geometry_tex_cache[i]->texture == texture)
 189          return PIPE_REFERENCED_FOR_READ;
 190    }
 191
 192    return PIPE_UNREFERENCED;
 193 }
 194
 195
 196
 197
 198 static void
 199 softpipe_render_condition( struct pipe_context *pipe,
 200                            struct pipe_query *query,
 201                            uint mode )
 202 {
 203    struct softpipe_context *softpipe = softpipe_context( pipe );
 204
 205    softpipe->render_cond_query = query;
 206    softpipe->render_cond_mode = mode;
 207 }
 208
 209
 210
 211 struct pipe_context *
 212 softpipe_create_context( struct pipe_screen *screen,
 213                          void *priv )
 214 {
 215    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 216    uint i;
 217
 218    util_init_math();
 219
 220 #ifdef PIPE_ARCH_X86
 221    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 222 #else
 223    softpipe->use_sse = FALSE;
 224 #endif
 225
 226    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 227    softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
 228
 229    softpipe->pipe.winsys = NULL;
 230    softpipe->pipe.screen = screen;
 231    softpipe->pipe.destroy = softpipe_destroy;
 232    softpipe->pipe.priv = priv;
 233
 234    /* state setters */
 235    softpipe_init_blend_funcs(&softpipe->pipe);
 236    softpipe_init_clip_funcs(&softpipe->pipe);
 237    softpipe_init_query_funcs( softpipe );
 238    softpipe_init_rasterizer_funcs(&softpipe->pipe);
 239    softpipe_init_sampler_funcs(&softpipe->pipe);
 240    softpipe_init_shader_funcs(&softpipe->pipe);
 241    softpipe_init_streamout_funcs(&softpipe->pipe);
 242    softpipe_init_texture_funcs( &softpipe->pipe );
 243    softpipe_init_vertex_funcs(&softpipe->pipe);
 244
 245    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 246
 247    softpipe->pipe.draw_vbo = softpipe_draw_vbo;
 248    softpipe->pipe.draw_stream_output = softpipe_draw_stream_output;
 249
 250    softpipe->pipe.clear = softpipe_clear;
 251    softpipe->pipe.flush = softpipe_flush;
 252
 253    softpipe->pipe.is_resource_referenced = softpipe_is_resource_referenced;
 254
 255    softpipe->pipe.render_condition = softpipe_render_condition;
 256
 257    /*
 258     * Alloc caches for accessing drawing surfaces and textures.
 259     * Must be before quad stage setup!
 260     */
 261    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 262       softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
 263    softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
 264
 265    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 266       softpipe->tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 267    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 268       softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 269    }
 270    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 271       softpipe->geometry_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 272    }
 273
 274    softpipe->fs_machine = tgsi_exec_machine_create();
 275
 276    /* setup quad rendering stages */
 277    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 278    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 279    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 280    softpipe->quad.pstipple = sp_quad_polygon_stipple_stage(softpipe);
 281
 282
 283    /*
 284     * Create drawing context and plug our rendering stage into it.
 285     */
 286    softpipe->draw = draw_create(&softpipe->pipe);
 287    if (!softpipe->draw)
 288       goto fail;
 289
 290    draw_texture_samplers(softpipe->draw,
 291                          PIPE_SHADER_VERTEX,
 292                          PIPE_MAX_VERTEX_SAMPLERS,
 293                          (struct tgsi_sampler **)
 294                             softpipe->tgsi.vert_samplers_list);
 295
 296    draw_texture_samplers(softpipe->draw,
 297                          PIPE_SHADER_GEOMETRY,
 298                          PIPE_MAX_GEOMETRY_SAMPLERS,
 299                          (struct tgsi_sampler **)
 300                             softpipe->tgsi.geom_samplers_list);
 301
 302    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 303       softpipe->no_rast = TRUE;
 304
 305    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 306    if (!softpipe->vbuf_backend)
 307       goto fail;
 308
 309    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 310    if (!softpipe->vbuf)
 311       goto fail;
 312
 313    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 314    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 315
 316
 317    /* plug in AA line/point stages */
 318    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 319    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 320
 321    /* Do polygon stipple w/ texture map + frag prog? */
 322 #if DO_PSTIPPLE_IN_DRAW_MODULE
 323    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 324 #endif
 325
 326    draw_wide_point_sprites(softpipe->draw, TRUE);
 327
 328    sp_init_surface_functions(softpipe);
 329
 330    return &softpipe->pipe;
 331
 332  fail:
 333    softpipe_destroy(&softpipe->pipe);
 334    return NULL;
 335 }