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 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    for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
  95       softpipe->quad[i].polygon_stipple->destroy( softpipe->quad[i].polygon_stipple );
  96       softpipe->quad[i].earlyz->destroy( softpipe->quad[i].earlyz );
  97       softpipe->quad[i].shade->destroy( softpipe->quad[i].shade );
  98       softpipe->quad[i].alpha_test->destroy( softpipe->quad[i].alpha_test );
  99       softpipe->quad[i].depth_test->destroy( softpipe->quad[i].depth_test );
 100       softpipe->quad[i].stencil_test->destroy( softpipe->quad[i].stencil_test );
 101       softpipe->quad[i].occlusion->destroy( softpipe->quad[i].occlusion );
 102       softpipe->quad[i].coverage->destroy( softpipe->quad[i].coverage );
 103       softpipe->quad[i].blend->destroy( softpipe->quad[i].blend );
 104       softpipe->quad[i].colormask->destroy( softpipe->quad[i].colormask );
 105       softpipe->quad[i].output->destroy( softpipe->quad[i].output );
 106    }
 107
 108    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 109       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
 110    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 111
 112    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 113       sp_destroy_tile_cache(softpipe->tex_cache[i]);
 114
 115    for (i = 0; i < Elements(softpipe->constants); i++) {
 116       if (softpipe->constants[i].buffer) {
 117          pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
 118       }
 119    }
 120
 121    FREE( softpipe );
 122 }
 123
 124 static unsigned int
 125 softpipe_is_texture_referenced( struct pipe_context *pipe,
 126                                 struct pipe_texture *texture,
 127                                 unsigned face, unsigned level)
 128 {
 129    struct softpipe_context *softpipe = softpipe_context( pipe );
 130    unsigned i;
 131
 132    if(softpipe->dirty_render_cache) {
 133       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 134          if(softpipe->framebuffer.cbufs[i] &&
 135             softpipe->framebuffer.cbufs[i]->texture == texture)
 136             return PIPE_REFERENCED_FOR_WRITE;
 137       }
 138       if(softpipe->framebuffer.zsbuf &&
 139          softpipe->framebuffer.zsbuf->texture == texture)
 140          return PIPE_REFERENCED_FOR_WRITE;
 141    }
 142
 143    /* FIXME: we also need to do the same for the texture cache */
 144
 145    return PIPE_UNREFERENCED;
 146 }
 147
 148 static unsigned int
 149 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 150                                struct pipe_buffer *buf)
 151 {
 152    return PIPE_UNREFERENCED;
 153 }
 154
 155 struct pipe_context *
 156 softpipe_create( struct pipe_screen *screen )
 157 {
 158    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 159    uint i;
 160
 161    util_init_math();
 162
 163 #ifdef PIPE_ARCH_X86
 164    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 165 #else
 166    softpipe->use_sse = FALSE;
 167 #endif
 168
 169    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 170
 171    softpipe->pipe.winsys = screen->winsys;
 172    softpipe->pipe.screen = screen;
 173    softpipe->pipe.destroy = softpipe_destroy;
 174
 175    /* state setters */
 176    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 177    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 178    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 179
 180    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 181    softpipe->pipe.bind_sampler_states  = softpipe_bind_sampler_states;
 182    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 183
 184    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 185    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 186    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 187
 188    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 189    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 190    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 191
 192    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 193    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 194    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 195
 196    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 197    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 198    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 199
 200    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 201    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 202    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 203    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 204    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 205    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 206    softpipe->pipe.set_sampler_textures = softpipe_set_sampler_textures;
 207    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 208
 209    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 210    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 211
 212    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 213    softpipe->pipe.draw_elements = softpipe_draw_elements;
 214    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 215    softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
 216
 217
 218    softpipe->pipe.clear = softpipe_clear;
 219    softpipe->pipe.flush = softpipe_flush;
 220
 221    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 222    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 223
 224    softpipe_init_query_funcs( softpipe );
 225    softpipe_init_texture_funcs( softpipe );
 226
 227    /*
 228     * Alloc caches for accessing drawing surfaces and textures.
 229     * Must be before quad stage setup!
 230     */
 231    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 232       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 233    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 234
 235    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 236       softpipe->tex_cache[i] = sp_create_tile_cache( screen );
 237
 238
 239    /* setup quad rendering stages */
 240    for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
 241       softpipe->quad[i].polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 242       softpipe->quad[i].earlyz = sp_quad_earlyz_stage(softpipe);
 243       softpipe->quad[i].shade = sp_quad_shade_stage(softpipe);
 244       softpipe->quad[i].alpha_test = sp_quad_alpha_test_stage(softpipe);
 245       softpipe->quad[i].depth_test = sp_quad_depth_test_stage(softpipe);
 246       softpipe->quad[i].stencil_test = sp_quad_stencil_test_stage(softpipe);
 247       softpipe->quad[i].occlusion = sp_quad_occlusion_stage(softpipe);
 248       softpipe->quad[i].coverage = sp_quad_coverage_stage(softpipe);
 249       softpipe->quad[i].blend = sp_quad_blend_stage(softpipe);
 250       softpipe->quad[i].colormask = sp_quad_colormask_stage(softpipe);
 251       softpipe->quad[i].output = sp_quad_output_stage(softpipe);
 252    }
 253
 254    /* vertex shader samplers */
 255    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 256       softpipe->tgsi.vert_samplers[i].base.get_samples = sp_get_samples_vertex;
 257       softpipe->tgsi.vert_samplers[i].unit = i;
 258       softpipe->tgsi.vert_samplers[i].sp = softpipe;
 259       softpipe->tgsi.vert_samplers[i].cache = softpipe->tex_cache[i];
 260       softpipe->tgsi.vert_samplers_list[i] = &softpipe->tgsi.vert_samplers[i];
 261    }
 262
 263    /* fragment shader samplers */
 264    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 265       softpipe->tgsi.frag_samplers[i].base.get_samples = sp_get_samples_fragment;
 266       softpipe->tgsi.frag_samplers[i].unit = i;
 267       softpipe->tgsi.frag_samplers[i].sp = softpipe;
 268       softpipe->tgsi.frag_samplers[i].cache = softpipe->tex_cache[i];
 269       softpipe->tgsi.frag_samplers_list[i] = &softpipe->tgsi.frag_samplers[i];
 270    }
 271
 272    /*
 273     * Create drawing context and plug our rendering stage into it.
 274     */
 275    softpipe->draw = draw_create();
 276    if (!softpipe->draw)
 277       goto fail;
 278
 279    draw_texture_samplers(softpipe->draw,
 280                          PIPE_MAX_SAMPLERS,
 281                          (struct tgsi_sampler **)
 282                             softpipe->tgsi.vert_samplers_list);
 283
 284    softpipe->setup = sp_draw_render_stage(softpipe);
 285    if (!softpipe->setup)
 286       goto fail;
 287
 288    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 289       softpipe->no_rast = TRUE;
 290
 291    if (debug_get_bool_option( "SP_NO_VBUF", FALSE )) {
 292       /* Deprecated path -- vbuf is the intended interface to the draw module:
 293        */
 294       draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
 295    }
 296    else {
 297       sp_init_vbuf(softpipe);
 298    }
 299
 300    /* plug in AA line/point stages */
 301    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 302    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 303
 304 #if USE_DRAW_STAGE_PSTIPPLE
 305    /* Do polygon stipple w/ texture map + frag prog? */
 306    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 307 #endif
 308
 309    sp_init_surface_functions(softpipe);
 310
 311    return &softpipe->pipe;
 312
 313  fail:
 314    softpipe_destroy(&softpipe->pipe);
 315    return NULL;
 316 }
 317