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 < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 111       sp_destroy_tex_tile_cache(softpipe->vertex_tex_cache[i]);
 112       pipe_texture_reference(&softpipe->vertex_textures[i], NULL);
 113    }
 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
 125 /**
 126  * if (the texture is being used as a framebuffer surface)
 127  *    return PIPE_REFERENCED_FOR_WRITE
 128  * else if (the texture is a bound texture source)
 129  *    return PIPE_REFERENCED_FOR_READ
 130  * else
 131  *    return PIPE_UNREFERENCED
 132  */
 133 static unsigned int
 134 softpipe_is_texture_referenced( struct pipe_context *pipe,
 135                                 struct pipe_texture *texture,
 136                                 unsigned face, unsigned level)
 137 {
 138    struct softpipe_context *softpipe = softpipe_context( pipe );
 139    unsigned i;
 140
 141    /* check if any of the bound drawing surfaces are this texture */
 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    /* check if any of the tex_cache textures are this texture */
 156    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 157       if (softpipe->tex_cache[i] &&
 158           softpipe->tex_cache[i]->texture == texture)
 159          return PIPE_REFERENCED_FOR_READ;
 160    }
 161    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 162       if (softpipe->vertex_tex_cache[i] &&
 163           softpipe->vertex_tex_cache[i]->texture == texture)
 164          return PIPE_REFERENCED_FOR_READ;
 165    }
 166
 167    return PIPE_UNREFERENCED;
 168 }
 169
 170
 171 static unsigned int
 172 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 173                                struct pipe_buffer *buf)
 174 {
 175    return PIPE_UNREFERENCED;
 176 }
 177
 178
 179 struct pipe_context *
 180 softpipe_create( struct pipe_screen *screen )
 181 {
 182    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 183    uint i;
 184
 185    util_init_math();
 186
 187 #ifdef PIPE_ARCH_X86
 188    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 189 #else
 190    softpipe->use_sse = FALSE;
 191 #endif
 192
 193    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 194
 195    softpipe->pipe.winsys = screen->winsys;
 196    softpipe->pipe.screen = screen;
 197    softpipe->pipe.destroy = softpipe_destroy;
 198
 199    /* state setters */
 200    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 201    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 202    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 203
 204    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 205    softpipe->pipe.bind_fragment_sampler_states  = softpipe_bind_sampler_states;
 206    softpipe->pipe.bind_vertex_sampler_states = softpipe_bind_vertex_sampler_states;
 207    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 208
 209    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 210    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 211    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 212
 213    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 214    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 215    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 216
 217    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 218    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 219    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 220
 221    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 222    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 223    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 224
 225    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 226    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 227    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 228    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 229    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 230    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 231    softpipe->pipe.set_fragment_sampler_textures = softpipe_set_sampler_textures;
 232    softpipe->pipe.set_vertex_sampler_textures = softpipe_set_vertex_sampler_textures;
 233    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 234
 235    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 236    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 237
 238    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 239    softpipe->pipe.draw_elements = softpipe_draw_elements;
 240    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 241    softpipe->pipe.draw_arrays_instanced = softpipe_draw_arrays_instanced;
 242    softpipe->pipe.draw_elements_instanced = softpipe_draw_elements_instanced;
 243
 244    softpipe->pipe.clear = softpipe_clear;
 245    softpipe->pipe.flush = softpipe_flush;
 246
 247    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 248    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 249
 250    softpipe_init_query_funcs( softpipe );
 251
 252    /*
 253     * Alloc caches for accessing drawing surfaces and textures.
 254     * Must be before quad stage setup!
 255     */
 256    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 257       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 258    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 259
 260    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 261       softpipe->tex_cache[i] = sp_create_tex_tile_cache( screen );
 262    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 263       softpipe->vertex_tex_cache[i] = sp_create_tex_tile_cache(screen);
 264    }
 265
 266    /* setup quad rendering stages */
 267    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 268    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 269    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 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_VERTEX_SAMPLERS,
 281                          (struct tgsi_sampler **)
 282                             softpipe->tgsi.vert_samplers_list);
 283
 284    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 285       softpipe->no_rast = TRUE;
 286
 287    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 288    if (!softpipe->vbuf_backend)
 289       goto fail;
 290
 291    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 292    if (!softpipe->vbuf)
 293       goto fail;
 294
 295    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 296    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 297
 298
 299    /* plug in AA line/point stages */
 300    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 301    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 302
 303    /* Do polygon stipple w/ texture map + frag prog? */
 304    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 305
 306    sp_init_surface_functions(softpipe);
 307
 308    return &softpipe->pipe;
 309
 310  fail:
 311    softpipe_destroy(&softpipe->pipe);
 312    return NULL;
 313 }