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 "pipe/p_defines.h"
  35 #include "util/u_math.h"
  36 #include "util/u_memory.h"
  37 #include "sp_clear.h"
  38 #include "sp_context.h"
  39 #include "sp_flush.h"
  40 #include "sp_prim_setup.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_texture.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_flush_tile_cache(sp, sp->cbuf_cache[i]);
  77    sp_flush_tile_cache(sp, sp->zsbuf_cache);
  78
  79    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  80       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  81    }
  82    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  83 }
  84
  85
  86 static void
  87 softpipe_destroy( struct pipe_context *pipe )
  88 {
  89    struct softpipe_context *softpipe = softpipe_context( pipe );
  90    uint i;
  91
  92    if (softpipe->draw)
  93       draw_destroy( softpipe->draw );
  94
  95    for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
  96       softpipe->quad[i].polygon_stipple->destroy( softpipe->quad[i].polygon_stipple );
  97       softpipe->quad[i].earlyz->destroy( softpipe->quad[i].earlyz );
  98       softpipe->quad[i].shade->destroy( softpipe->quad[i].shade );
  99       softpipe->quad[i].alpha_test->destroy( softpipe->quad[i].alpha_test );
 100       softpipe->quad[i].depth_test->destroy( softpipe->quad[i].depth_test );
 101       softpipe->quad[i].stencil_test->destroy( softpipe->quad[i].stencil_test );
 102       softpipe->quad[i].occlusion->destroy( softpipe->quad[i].occlusion );
 103       softpipe->quad[i].coverage->destroy( softpipe->quad[i].coverage );
 104       softpipe->quad[i].blend->destroy( softpipe->quad[i].blend );
 105       softpipe->quad[i].colormask->destroy( softpipe->quad[i].colormask );
 106       softpipe->quad[i].output->destroy( softpipe->quad[i].output );
 107    }
 108
 109    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 110       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
 111    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 112
 113    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 114       sp_destroy_tile_cache(softpipe->tex_cache[i]);
 115
 116    for (i = 0; i < Elements(softpipe->constants); i++) {
 117       if (softpipe->constants[i].buffer) {
 118          pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
 119       }
 120    }
 121
 122    FREE( softpipe );
 123 }
 124
 125
 126 /**
 127  * if (the texture is being used as a framebuffer surface)
 128  *    return PIPE_REFERENCED_FOR_WRITE
 129  * else if (the texture is a bound texture source)
 130  *    return PIPE_REFERENCED_FOR_READ  XXX not done yet
 131  * else
 132  *    return PIPE_UNREFERENCED
 133  */
 134 static unsigned int
 135 softpipe_is_texture_referenced( struct pipe_context *pipe,
 136                                 struct pipe_texture *texture,
 137                                 unsigned face, unsigned level)
 138 {
 139    struct softpipe_context *softpipe = softpipe_context( pipe );
 140    unsigned i;
 141
 142    if (softpipe->dirty_render_cache) {
 143       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 144          if (softpipe->framebuffer.cbufs[i] &&
 145              softpipe->framebuffer.cbufs[i]->texture == texture) {
 146             return PIPE_REFERENCED_FOR_WRITE;
 147          }
 148       }
 149       if (softpipe->framebuffer.zsbuf &&
 150           softpipe->framebuffer.zsbuf->texture == texture) {
 151          return PIPE_REFERENCED_FOR_WRITE;
 152       }
 153    }
 154
 155    /* FIXME: we also need to do the same for the texture cache */
 156
 157    return PIPE_UNREFERENCED;
 158 }
 159
 160
 161 static unsigned int
 162 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 163                                struct pipe_buffer *buf)
 164 {
 165    return PIPE_UNREFERENCED;
 166 }
 167
 168
 169 struct pipe_context *
 170 softpipe_create( struct pipe_screen *screen )
 171 {
 172    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 173    uint i;
 174
 175    util_init_math();
 176
 177 #ifdef PIPE_ARCH_X86
 178    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 179 #else
 180    softpipe->use_sse = FALSE;
 181 #endif
 182
 183    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 184
 185    softpipe->pipe.winsys = screen->winsys;
 186    softpipe->pipe.screen = screen;
 187    softpipe->pipe.destroy = softpipe_destroy;
 188
 189    /* state setters */
 190    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 191    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 192    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 193
 194    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 195    softpipe->pipe.bind_sampler_states  = softpipe_bind_sampler_states;
 196    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 197
 198    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 199    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 200    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 201
 202    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 203    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 204    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 205
 206    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 207    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 208    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 209
 210    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 211    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 212    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 213
 214    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 215    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 216    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 217    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 218    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 219    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 220    softpipe->pipe.set_sampler_textures = softpipe_set_sampler_textures;
 221    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 222
 223    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 224    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 225
 226    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 227    softpipe->pipe.draw_elements = softpipe_draw_elements;
 228    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 229    softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
 230
 231
 232    softpipe->pipe.clear = softpipe_clear;
 233    softpipe->pipe.flush = softpipe_flush;
 234
 235    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 236    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 237
 238    softpipe_init_query_funcs( softpipe );
 239
 240    /*
 241     * Alloc caches for accessing drawing surfaces and textures.
 242     * Must be before quad stage setup!
 243     */
 244    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 245       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 246    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 247
 248    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 249       softpipe->tex_cache[i] = sp_create_tile_cache( screen );
 250
 251
 252    /* setup quad rendering stages */
 253    for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
 254       softpipe->quad[i].polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 255       softpipe->quad[i].earlyz = sp_quad_earlyz_stage(softpipe);
 256       softpipe->quad[i].shade = sp_quad_shade_stage(softpipe);
 257       softpipe->quad[i].alpha_test = sp_quad_alpha_test_stage(softpipe);
 258       softpipe->quad[i].depth_test = sp_quad_depth_test_stage(softpipe);
 259       softpipe->quad[i].stencil_test = sp_quad_stencil_test_stage(softpipe);
 260       softpipe->quad[i].occlusion = sp_quad_occlusion_stage(softpipe);
 261       softpipe->quad[i].coverage = sp_quad_coverage_stage(softpipe);
 262       softpipe->quad[i].blend = sp_quad_blend_stage(softpipe);
 263       softpipe->quad[i].colormask = sp_quad_colormask_stage(softpipe);
 264       softpipe->quad[i].output = sp_quad_output_stage(softpipe);
 265    }
 266
 267    /* vertex shader samplers */
 268    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 269       softpipe->tgsi.vert_samplers[i].base.get_samples = sp_get_samples_vertex;
 270       softpipe->tgsi.vert_samplers[i].unit = i;
 271       softpipe->tgsi.vert_samplers[i].sp = softpipe;
 272       softpipe->tgsi.vert_samplers[i].cache = softpipe->tex_cache[i];
 273       softpipe->tgsi.vert_samplers_list[i] = &softpipe->tgsi.vert_samplers[i];
 274    }
 275
 276    /* fragment shader samplers */
 277    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 278       softpipe->tgsi.frag_samplers[i].base.get_samples = sp_get_samples_fragment;
 279       softpipe->tgsi.frag_samplers[i].unit = i;
 280       softpipe->tgsi.frag_samplers[i].sp = softpipe;
 281       softpipe->tgsi.frag_samplers[i].cache = softpipe->tex_cache[i];
 282       softpipe->tgsi.frag_samplers_list[i] = &softpipe->tgsi.frag_samplers[i];
 283    }
 284
 285    /*
 286     * Create drawing context and plug our rendering stage into it.
 287     */
 288    softpipe->draw = draw_create();
 289    if (!softpipe->draw)
 290       goto fail;
 291
 292    draw_texture_samplers(softpipe->draw,
 293                          PIPE_MAX_SAMPLERS,
 294                          (struct tgsi_sampler **)
 295                             softpipe->tgsi.vert_samplers_list);
 296
 297    softpipe->setup = sp_draw_render_stage(softpipe);
 298    if (!softpipe->setup)
 299       goto fail;
 300
 301    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 302       softpipe->no_rast = TRUE;
 303
 304    if (debug_get_bool_option( "SP_NO_VBUF", FALSE )) {
 305       /* Deprecated path -- vbuf is the intended interface to the draw module:
 306        */
 307       draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
 308    }
 309    else {
 310       sp_init_vbuf(softpipe);
 311    }
 312
 313    /* plug in AA line/point stages */
 314    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 315    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 316
 317 #if USE_DRAW_STAGE_PSTIPPLE
 318    /* Do polygon stipple w/ texture map + frag prog? */
 319    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 320 #endif
 321
 322    sp_init_surface_functions(softpipe);
 323
 324    return &softpipe->pipe;
 325
 326  fail:
 327    softpipe_destroy(&softpipe->pipe);
 328    return NULL;
 329 }
 330