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 "sp_clear.h"
  40 #include "sp_context.h"
  41 #include "sp_flush.h"
  42 #include "sp_prim_vbuf.h"
  43 #include "sp_state.h"
  44 #include "sp_surface.h"
  45 #include "sp_tile_cache.h"
  46 #include "sp_tex_tile_cache.h"
  47 #include "sp_texture.h"
  48 #include "sp_query.h"
  49
  50
  51
  52 /**
  53  * Map any drawing surfaces which aren't already mapped
  54  */
  55 void
  56 softpipe_map_transfers(struct softpipe_context *sp)
  57 {
  58    unsigned i;
  59
  60    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  61       sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
  62    }
  63
  64    sp_tile_cache_map_transfers(sp->zsbuf_cache);
  65 }
  66
  67
  68 /**
  69  * Unmap any mapped drawing surfaces
  70  */
  71 void
  72 softpipe_unmap_transfers(struct softpipe_context *sp)
  73 {
  74    uint i;
  75
  76    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  77       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  78    }
  79
  80    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  81 }
  82
  83
  84 static void
  85 softpipe_destroy( struct pipe_context *pipe )
  86 {
  87    struct softpipe_context *softpipe = softpipe_context( pipe );
  88    uint i;
  89
  90    if (softpipe->draw)
  91       draw_destroy( softpipe->draw );
  92
  93    softpipe->quad.shade->destroy( softpipe->quad.shade );
  94    softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
  95    softpipe->quad.blend->destroy( softpipe->quad.blend );
  96
  97    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  98       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
  99       pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
 100    }
 101
 102    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 103    pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
 104
 105    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 106       sp_destroy_tex_tile_cache(softpipe->tex_cache[i]);
 107       pipe_sampler_view_reference(&softpipe->sampler_views[i], NULL);
 108    }
 109
 110    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 111       sp_destroy_tex_tile_cache(softpipe->vertex_tex_cache[i]);
 112       pipe_sampler_view_reference(&softpipe->vertex_sampler_views[i], NULL);
 113    }
 114
 115    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 116       uint j;
 117
 118       for (j = 0; j < PIPE_MAX_CONSTANT_BUFFERS; j++) {
 119          if (softpipe->constants[i][j]) {
 120             pipe_buffer_reference(&softpipe->constants[i][j], NULL);
 121          }
 122       }
 123    }
 124
 125    FREE( softpipe );
 126 }
 127
 128
 129 /**
 130  * if (the texture is being used as a framebuffer surface)
 131  *    return PIPE_REFERENCED_FOR_WRITE
 132  * else if (the texture is a bound texture source)
 133  *    return PIPE_REFERENCED_FOR_READ
 134  * else
 135  *    return PIPE_UNREFERENCED
 136  */
 137 static unsigned int
 138 softpipe_is_texture_referenced( struct pipe_context *pipe,
 139                                 struct pipe_texture *texture,
 140                                 unsigned face, unsigned level)
 141 {
 142    struct softpipe_context *softpipe = softpipe_context( pipe );
 143    unsigned i;
 144
 145    /* check if any of the bound drawing surfaces are this texture */
 146    if (softpipe->dirty_render_cache) {
 147       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 148          if (softpipe->framebuffer.cbufs[i] &&
 149              softpipe->framebuffer.cbufs[i]->texture == texture) {
 150             return PIPE_REFERENCED_FOR_WRITE;
 151          }
 152       }
 153       if (softpipe->framebuffer.zsbuf &&
 154           softpipe->framebuffer.zsbuf->texture == texture) {
 155          return PIPE_REFERENCED_FOR_WRITE;
 156       }
 157    }
 158
 159    /* check if any of the tex_cache textures are this texture */
 160    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 161       if (softpipe->tex_cache[i] &&
 162           softpipe->tex_cache[i]->texture == texture)
 163          return PIPE_REFERENCED_FOR_READ;
 164    }
 165    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 166       if (softpipe->vertex_tex_cache[i] &&
 167           softpipe->vertex_tex_cache[i]->texture == texture)
 168          return PIPE_REFERENCED_FOR_READ;
 169    }
 170
 171    return PIPE_UNREFERENCED;
 172 }
 173
 174
 175 static unsigned int
 176 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 177                                struct pipe_buffer *buf)
 178 {
 179    return PIPE_UNREFERENCED;
 180 }
 181
 182
 183 static void
 184 softpipe_render_condition( struct pipe_context *pipe,
 185                            struct pipe_query *query,
 186                            uint mode )
 187 {
 188    struct softpipe_context *softpipe = softpipe_context( pipe );
 189
 190    softpipe->render_cond_query = query;
 191    softpipe->render_cond_mode = mode;
 192 }
 193
 194
 195
 196 struct pipe_context *
 197 softpipe_create_context( struct pipe_screen *screen,
 198                          void *priv )
 199 {
 200    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 201    uint i;
 202
 203    util_init_math();
 204
 205 #ifdef PIPE_ARCH_X86
 206    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 207 #else
 208    softpipe->use_sse = FALSE;
 209 #endif
 210
 211    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 212    softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
 213
 214    softpipe->pipe.winsys = NULL;
 215    softpipe->pipe.screen = screen;
 216    softpipe->pipe.destroy = softpipe_destroy;
 217    softpipe->pipe.priv = priv;
 218
 219    /* state setters */
 220    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 221    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 222    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 223
 224    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 225    softpipe->pipe.bind_fragment_sampler_states  = softpipe_bind_sampler_states;
 226    softpipe->pipe.bind_vertex_sampler_states = softpipe_bind_vertex_sampler_states;
 227    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 228
 229    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 230    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 231    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 232
 233    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 234    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 235    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 236
 237    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 238    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 239    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 240
 241    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 242    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 243    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 244
 245    softpipe->pipe.create_gs_state = softpipe_create_gs_state;
 246    softpipe->pipe.bind_gs_state   = softpipe_bind_gs_state;
 247    softpipe->pipe.delete_gs_state = softpipe_delete_gs_state;
 248
 249    softpipe->pipe.create_vertex_elements_state = softpipe_create_vertex_elements_state;
 250    softpipe->pipe.bind_vertex_elements_state = softpipe_bind_vertex_elements_state;
 251    softpipe->pipe.delete_vertex_elements_state = softpipe_delete_vertex_elements_state;
 252
 253    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 254    softpipe->pipe.set_stencil_ref = softpipe_set_stencil_ref;
 255    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 256    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 257    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 258    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 259    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 260    softpipe->pipe.set_fragment_sampler_views = softpipe_set_sampler_views;
 261    softpipe->pipe.set_vertex_sampler_views = softpipe_set_vertex_sampler_views;
 262    softpipe->pipe.create_sampler_view = softpipe_create_sampler_view;
 263    softpipe->pipe.sampler_view_destroy = softpipe_sampler_view_destroy;
 264    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 265
 266    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 267
 268    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 269    softpipe->pipe.draw_elements = softpipe_draw_elements;
 270    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 271    softpipe->pipe.draw_arrays_instanced = softpipe_draw_arrays_instanced;
 272    softpipe->pipe.draw_elements_instanced = softpipe_draw_elements_instanced;
 273
 274    softpipe->pipe.clear = softpipe_clear;
 275    softpipe->pipe.flush = softpipe_flush;
 276
 277    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 278    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 279
 280    softpipe_init_query_funcs( softpipe );
 281    softpipe_init_texture_funcs( &softpipe->pipe );
 282
 283    softpipe->pipe.render_condition = softpipe_render_condition;
 284
 285    /*
 286     * Alloc caches for accessing drawing surfaces and textures.
 287     * Must be before quad stage setup!
 288     */
 289    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 290       softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
 291    softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
 292
 293    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 294       softpipe->tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 295    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 296       softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache( &softpipe->pipe );
 297    }
 298
 299    /* setup quad rendering stages */
 300    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 301    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 302    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 303
 304
 305    /*
 306     * Create drawing context and plug our rendering stage into it.
 307     */
 308    softpipe->draw = draw_create();
 309    if (!softpipe->draw)
 310       goto fail;
 311
 312    draw_texture_samplers(softpipe->draw,
 313                          PIPE_MAX_VERTEX_SAMPLERS,
 314                          (struct tgsi_sampler **)
 315                             softpipe->tgsi.vert_samplers_list);
 316
 317    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 318       softpipe->no_rast = TRUE;
 319
 320    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 321    if (!softpipe->vbuf_backend)
 322       goto fail;
 323
 324    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 325    if (!softpipe->vbuf)
 326       goto fail;
 327
 328    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 329    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 330
 331
 332    /* plug in AA line/point stages */
 333    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 334    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 335
 336    /* Do polygon stipple w/ texture map + frag prog? */
 337    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 338
 339    sp_init_surface_functions(softpipe);
 340
 341    return &softpipe->pipe;
 342
 343  fail:
 344    softpipe_destroy(&softpipe->pipe);
 345    return NULL;
 346 }