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_texture.h"
  47 #include "sp_winsys.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_texture_reference(&softpipe->texture[i], NULL);
 108    }
 109
 110    for (i = 0; i < Elements(softpipe->constants); i++) {
 111       if (softpipe->constants[i].buffer) {
 112          pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
 113       }
 114    }
 115
 116    FREE( softpipe );
 117 }
 118
 119
 120 /**
 121  * if (the texture is being used as a framebuffer surface)
 122  *    return PIPE_REFERENCED_FOR_WRITE
 123  * else if (the texture is a bound texture source)
 124  *    return PIPE_REFERENCED_FOR_READ
 125  * else
 126  *    return PIPE_UNREFERENCED
 127  */
 128 static unsigned int
 129 softpipe_is_texture_referenced( struct pipe_context *pipe,
 130                                 struct pipe_texture *texture,
 131                                 unsigned face, unsigned level)
 132 {
 133    struct softpipe_context *softpipe = softpipe_context( pipe );
 134    unsigned i;
 135
 136    /* check if any of the bound drawing surfaces are this texture */
 137    if (softpipe->dirty_render_cache) {
 138       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 139          if (softpipe->framebuffer.cbufs[i] &&
 140              softpipe->framebuffer.cbufs[i]->texture == texture) {
 141             return PIPE_REFERENCED_FOR_WRITE;
 142          }
 143       }
 144       if (softpipe->framebuffer.zsbuf &&
 145           softpipe->framebuffer.zsbuf->texture == texture) {
 146          return PIPE_REFERENCED_FOR_WRITE;
 147       }
 148    }
 149
 150    /* check if any of the tex_cache textures are this texture */
 151    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 152       if (softpipe->tex_cache[i] &&
 153           softpipe->tex_cache[i]->texture == texture)
 154          return PIPE_REFERENCED_FOR_READ;
 155    }
 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_tex_tile_cache( screen );
 250
 251
 252    /* setup quad rendering stages */
 253    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 254    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 255    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 256
 257
 258    /*
 259     * Create drawing context and plug our rendering stage into it.
 260     */
 261    softpipe->draw = draw_create();
 262    if (!softpipe->draw)
 263       goto fail;
 264
 265    draw_texture_samplers(softpipe->draw,
 266                          PIPE_MAX_SAMPLERS,
 267                          (struct tgsi_sampler **)
 268                             softpipe->tgsi.vert_samplers_list);
 269
 270    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 271       softpipe->no_rast = TRUE;
 272
 273    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 274    if (!softpipe->vbuf_backend)
 275       goto fail;
 276
 277    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 278    if (!softpipe->vbuf)
 279       goto fail;
 280
 281    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 282    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 283
 284
 285    /* plug in AA line/point stages */
 286    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 287    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 288
 289    /* Do polygon stipple w/ texture map + frag prog? */
 290    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 291
 292    sp_init_surface_functions(softpipe);
 293
 294    return &softpipe->pipe;
 295
 296  fail:
 297    softpipe_destroy(&softpipe->pipe);
 298    return NULL;
 299 }