src/gallium/drivers/i965/brw_wm_surface_state.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32 #include "pipe/p_format.h"
  33
  34 #include "brw_batchbuffer.h"
  35 #include "brw_context.h"
  36 #include "brw_state.h"
  37 #include "brw_defines.h"
  38 #include "brw_screen.h"
  39
  40
  41
  42
  43 static void
  44 brw_update_texture_surface( struct brw_context *brw,
  45                             struct brw_texture *tex,
  46                             GLuint surf )
  47 {
  48    brw->wm.surf_bo[surf] = brw_search_cache(&brw->surface_cache,
  49                                             BRW_SS_SURFACE,
  50                                             &tex->ss, sizeof tex->ss,
  51                                             &tex->bo, 1,
  52                                             NULL);
  53
  54    if (brw->wm.surf_bo[surf] == NULL) {
  55       brw->wm.surf_bo[surf] = brw_upload_cache(&brw->surface_cache, BRW_SS_SURFACE,
  56                                                &tex->ss, sizeof tex->ss,
  57                                                &tex->bo, 1,
  58                                                &tex->ss, sizeof tex->ss,
  59                                                NULL, NULL);
  60
  61       /* Emit relocation to surface contents */
  62       brw->sws->bo_emit_reloc(brw->wm.surf_bo[surf],
  63                               BRW_USAGE_SAMPLER,
  64                               0,
  65                               offsetof(struct brw_surface_state, ss1),
  66                               tex->bo);
  67    }
  68 }
  69
  70
  71
  72
  73
  74
  75
  76
  77 /**
  78  * Sets up a surface state structure to point at the given region.
  79  * While it is only used for the front/back buffer currently, it should be
  80  * usable for further buffers when doing ARB_draw_buffer support.
  81  */
  82 static void
  83 brw_update_renderbuffer_surface(struct brw_context *brw,
  84                                 struct brw_surface *surface,
  85                                 unsigned int unit)
  86 {
  87    struct brw_surf_ss0 blend_ss0 = brw->curr.blend->ss0;
  88    struct brw_surface_state ss;
  89
  90    /* Surfaces are potentially shared between contexts, so can't
  91     * scribble the in-place ss0 value in the surface.
  92     */
  93    memcpy(&ss, &surface->ss, sizeof ss);
  94
  95    ss.ss0.color_blend        = blend_ss0.color_blend;
  96    ss.ss0.writedisable_blue  = blend_ss0.writedisable_blue;
  97    ss.ss0.writedisable_green = blend_ss0.writedisable_green;
  98    ss.ss0.writedisable_red   = blend_ss0.writedisable_red;
  99    ss.ss0.writedisable_alpha = blend_ss0.writedisable_alpha;
 100
 101    brw->sws->bo_unreference(brw->wm.surf_bo[unit]);
 102    brw->wm.surf_bo[unit] = brw_search_cache(&brw->surface_cache,
 103                                             BRW_SS_SURFACE,
 104                                             &ss, sizeof(ss),
 105                                             &surface->bo, 1,
 106                                             NULL);
 107
 108    if (brw->wm.surf_bo[unit] == NULL) {
 109
 110       brw->wm.surf_bo[unit] = brw_upload_cache(&brw->surface_cache,
 111                                                BRW_SS_SURFACE,
 112                                                &ss, sizeof ss,
 113                                                &surface->bo, 1,
 114                                                &ss, sizeof ss,
 115                                                NULL, NULL);
 116
 117       /* XXX: we will only be rendering to this surface:
 118        */
 119       brw->sws->bo_emit_reloc(brw->wm.surf_bo[unit],
 120                               BRW_USAGE_RENDER_TARGET,
 121                               ss.ss1.base_addr - surface->bo->offset[0], /* XXX */
 122                               offsetof(struct brw_surface_state, ss1),
 123                               surface->bo);
 124    }
 125 }
 126
 127
 128 /**
 129  * Constructs the binding table for the WM surface state, which maps unit
 130  * numbers to surface state objects.
 131  */
 132 static struct brw_winsys_buffer *
 133 brw_wm_get_binding_table(struct brw_context *brw)
 134 {
 135    struct brw_winsys_buffer *bind_bo;
 136
 137    assert(brw->wm.nr_surfaces <= BRW_WM_MAX_SURF);
 138
 139    /* Note there is no key for this search beyond the values in the
 140     * relocation array:
 141     */
 142    bind_bo = brw_search_cache(&brw->surface_cache, BRW_SS_SURF_BIND,
 143                               NULL, 0,
 144                               brw->wm.surf_bo, brw->wm.nr_surfaces,
 145                               NULL);
 146
 147    if (bind_bo == NULL) {
 148       uint32_t data[BRW_WM_MAX_SURF];
 149       GLuint data_size = brw->wm.nr_surfaces * sizeof data[0];
 150       int i;
 151
 152       for (i = 0; i < brw->wm.nr_surfaces; i++)
 153          data[i] = brw->wm.surf_bo[i]->offset[0];
 154
 155       bind_bo = brw_upload_cache( &brw->surface_cache, BRW_SS_SURF_BIND,
 156                                   NULL, 0,
 157                                   brw->wm.surf_bo, brw->wm.nr_surfaces,
 158                                   data, data_size,
 159                                   NULL, NULL);
 160
 161       /* Emit binding table relocations to surface state */
 162       for (i = 0; i < brw->wm.nr_surfaces; i++) {
 163          brw->sws->bo_emit_reloc(bind_bo,
 164                                  BRW_USAGE_STATE,
 165                                  0,
 166                                  i * sizeof(GLuint),
 167                                  brw->wm.surf_bo[i]);
 168       }
 169    }
 170
 171    return bind_bo;
 172 }
 173
 174 static int prepare_wm_surfaces(struct brw_context *brw )
 175 {
 176    GLuint i;
 177    int nr_surfaces = 0;
 178
 179    /* Unreference old buffers
 180     */
 181    for (i = 0; i < brw->wm.nr_surfaces; i++) {
 182       brw->sws->bo_unreference(brw->wm.surf_bo[i]);
 183       brw->wm.surf_bo[i] = NULL;
 184    }
 185
 186
 187    /* PIPE_NEW_COLOR_BUFFERS | PIPE_NEW_BLEND
 188     *
 189     * Update surfaces for drawing buffers.  Mixes in colormask and
 190     * blend state.
 191     *
 192     * XXX: no color buffer case
 193     */
 194    for (i = 0; i < brw->curr.fb.nr_cbufs; i++) {
 195       brw_update_renderbuffer_surface(brw,
 196                                       brw_surface(brw->curr.fb.cbufs[i]),
 197                                       nr_surfaces++);
 198    }
 199
 200    /* PIPE_NEW_TEXTURE
 201     */
 202    for (i = 0; i < brw->curr.num_textures; i++) {
 203       brw_update_texture_surface(brw,
 204                                  brw_texture(brw->curr.texture[i]),
 205                                  nr_surfaces++);
 206    }
 207
 208    /* PIPE_NEW_FRAGMENT_CONSTANTS
 209     */
 210 #if 0
 211    if (brw->curr.fragment_constants) {
 212       brw_update_fragment_constant_surface(brw,
 213                                            brw->curr.fragment_constants,
 214                                            nr_surfaces++);
 215    }
 216 #endif
 217
 218    brw->sws->bo_unreference(brw->wm.bind_bo);
 219    brw->wm.bind_bo = brw_wm_get_binding_table(brw);
 220
 221    if (brw->wm.nr_surfaces != nr_surfaces) {
 222       brw->wm.nr_surfaces = nr_surfaces;
 223       brw->state.dirty.brw |= BRW_NEW_NR_WM_SURFACES;
 224    }
 225
 226    return 0;
 227 }
 228
 229 const struct brw_tracked_state brw_wm_surfaces = {
 230    .dirty = {
 231       .mesa = (PIPE_NEW_COLOR_BUFFERS |
 232                PIPE_NEW_BOUND_TEXTURES |
 233                PIPE_NEW_FRAGMENT_CONSTANTS |
 234                PIPE_NEW_BLEND),
 235       .brw = (BRW_NEW_CONTEXT |
 236               BRW_NEW_WM_SURFACES),
 237       .cache = 0
 238    },
 239    .prepare = prepare_wm_surfaces,
 240 };
 241
 242
 243