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 "sp_clear.h"
  39 #include "sp_context.h"
  40 #include "sp_flush.h"
  41 #include "sp_prim_vbuf.h"
  42 #include "sp_state.h"
  43 #include "sp_surface.h"
  44 #include "sp_tile_cache.h"
  45 #include "sp_tex_tile_cache.h"
  46 #include "sp_winsys.h"
  47 #include "sp_query.h"
  48
  49
  50
  51 /**
  52  * Map any drawing surfaces which aren't already mapped
  53  */
  54 void
  55 softpipe_map_transfers(struct softpipe_context *sp)
  56 {
  57    unsigned i;
  58
  59    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  60       sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
  61    }
  62
  63    sp_tile_cache_map_transfers(sp->zsbuf_cache);
  64 }
  65
  66
  67 /**
  68  * Unmap any mapped drawing surfaces
  69  */
  70 void
  71 softpipe_unmap_transfers(struct softpipe_context *sp)
  72 {
  73    uint i;
  74
  75    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  76       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  77    }
  78
  79    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  80 }
  81
  82
  83 static void
  84 softpipe_destroy( struct pipe_context *pipe )
  85 {
  86    struct softpipe_context *softpipe = softpipe_context( pipe );
  87    uint i;
  88
  89    if (softpipe->draw)
  90       draw_destroy( softpipe->draw );
  91
  92    softpipe->quad.shade->destroy( softpipe->quad.shade );
  93    softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
  94    softpipe->quad.blend->destroy( softpipe->quad.blend );
  95
  96    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  97       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
  98       pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
  99    }
 100
 101    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 102    pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
 103
 104    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 105       sp_destroy_tex_tile_cache(softpipe->tex_cache[i]);
 106       pipe_texture_reference(&softpipe->texture[i], NULL);
 107    }
 108
 109    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 110       sp_destroy_tex_tile_cache(softpipe->vertex_tex_cache[i]);
 111       pipe_texture_reference(&softpipe->vertex_textures[i], NULL);
 112    }
 113
 114    for (i = 0; i < Elements(softpipe->constants); i++) {
 115       if (softpipe->constants[i]) {
 116          pipe_buffer_reference(&softpipe->constants[i], NULL);
 117       }
 118    }
 119
 120    FREE( softpipe );
 121 }
 122
 123
 124 /**
 125  * if (the texture is being used as a framebuffer surface)
 126  *    return PIPE_REFERENCED_FOR_WRITE
 127  * else if (the texture is a bound texture source)
 128  *    return PIPE_REFERENCED_FOR_READ
 129  * else
 130  *    return PIPE_UNREFERENCED
 131  */
 132 static unsigned int
 133 softpipe_is_texture_referenced( struct pipe_context *pipe,
 134                                 struct pipe_texture *texture,
 135                                 unsigned face, unsigned level)
 136 {
 137    struct softpipe_context *softpipe = softpipe_context( pipe );
 138    unsigned i;
 139
 140    /* check if any of the bound drawing surfaces are this texture */
 141    if (softpipe->dirty_render_cache) {
 142       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 143          if (softpipe->framebuffer.cbufs[i] &&
 144              softpipe->framebuffer.cbufs[i]->texture == texture) {
 145             return PIPE_REFERENCED_FOR_WRITE;
 146          }
 147       }
 148       if (softpipe->framebuffer.zsbuf &&
 149           softpipe->framebuffer.zsbuf->texture == texture) {
 150          return PIPE_REFERENCED_FOR_WRITE;
 151       }
 152    }
 153
 154    /* check if any of the tex_cache textures are this texture */
 155    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 156       if (softpipe->tex_cache[i] &&
 157           softpipe->tex_cache[i]->texture == texture)
 158          return PIPE_REFERENCED_FOR_READ;
 159    }
 160    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 161       if (softpipe->vertex_tex_cache[i] &&
 162           softpipe->vertex_tex_cache[i]->texture == texture)
 163          return PIPE_REFERENCED_FOR_READ;
 164    }
 165
 166    return PIPE_UNREFERENCED;
 167 }
 168
 169
 170 static unsigned int
 171 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 172                                struct pipe_buffer *buf)
 173 {
 174    return PIPE_UNREFERENCED;
 175 }
 176
 177
 178 static void
 179 softpipe_render_condition( struct pipe_context *pipe,
 180                            struct pipe_query *query,
 181                            uint mode )
 182 {
 183    struct softpipe_context *softpipe = softpipe_context( pipe );
 184
 185    softpipe->render_cond_query = query;
 186    softpipe->render_cond_mode = mode;
 187 }
 188
 189
 190
 191 struct pipe_context *
 192 softpipe_create( struct pipe_screen *screen )
 193 {
 194    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 195    uint i;
 196
 197    util_init_math();
 198
 199 #ifdef PIPE_ARCH_X86
 200    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 201 #else
 202    softpipe->use_sse = FALSE;
 203 #endif
 204
 205    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 206    softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
 207
 208    softpipe->pipe.winsys = screen->winsys;
 209    softpipe->pipe.screen = screen;
 210    softpipe->pipe.destroy = softpipe_destroy;
 211
 212    /* state setters */
 213    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 214    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 215    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 216
 217    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 218    softpipe->pipe.bind_fragment_sampler_states  = softpipe_bind_sampler_states;
 219    softpipe->pipe.bind_vertex_sampler_states = softpipe_bind_vertex_sampler_states;
 220    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 221
 222    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 223    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 224    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 225
 226    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 227    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 228    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 229
 230    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 231    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 232    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 233
 234    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 235    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 236    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 237
 238    softpipe->pipe.create_gs_state = softpipe_create_gs_state;
 239    softpipe->pipe.bind_gs_state   = softpipe_bind_gs_state;
 240    softpipe->pipe.delete_gs_state = softpipe_delete_gs_state;
 241
 242    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 243    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 244    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 245    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 246    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 247    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 248    softpipe->pipe.set_fragment_sampler_textures = softpipe_set_sampler_textures;
 249    softpipe->pipe.set_vertex_sampler_textures = softpipe_set_vertex_sampler_textures;
 250    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 251
 252    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 253    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 254
 255    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 256    softpipe->pipe.draw_elements = softpipe_draw_elements;
 257    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 258    softpipe->pipe.draw_arrays_instanced = softpipe_draw_arrays_instanced;
 259    softpipe->pipe.draw_elements_instanced = softpipe_draw_elements_instanced;
 260
 261    softpipe->pipe.clear = softpipe_clear;
 262    softpipe->pipe.flush = softpipe_flush;
 263
 264    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 265    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 266
 267    softpipe_init_query_funcs( softpipe );
 268
 269    softpipe->pipe.render_condition = softpipe_render_condition;
 270
 271    /*
 272     * Alloc caches for accessing drawing surfaces and textures.
 273     * Must be before quad stage setup!
 274     */
 275    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 276       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 277    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 278
 279    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 280       softpipe->tex_cache[i] = sp_create_tex_tile_cache( screen );
 281    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 282       softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache(screen);
 283    }
 284
 285    /* setup quad rendering stages */
 286    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 287    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 288    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 289
 290
 291    /*
 292     * Create drawing context and plug our rendering stage into it.
 293     */
 294    softpipe->draw = draw_create();
 295    if (!softpipe->draw)
 296       goto fail;
 297
 298    draw_texture_samplers(softpipe->draw,
 299                          PIPE_MAX_VERTEX_SAMPLERS,
 300                          (struct tgsi_sampler **)
 301                             softpipe->tgsi.vert_samplers_list);
 302
 303    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 304       softpipe->no_rast = TRUE;
 305
 306    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 307    if (!softpipe->vbuf_backend)
 308       goto fail;
 309
 310    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 311    if (!softpipe->vbuf)
 312       goto fail;
 313
 314    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 315    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 316
 317
 318    /* plug in AA line/point stages */
 319    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 320    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 321
 322    /* Do polygon stipple w/ texture map + frag prog? */
 323    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 324
 325    sp_init_surface_functions(softpipe);
 326
 327    return &softpipe->pipe;
 328
 329  fail:
 330    softpipe_destroy(&softpipe->pipe);
 331    return NULL;
 332 }