src/gallium/drivers/r300/r300_flush.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "draw/draw_context.h"
  25 #include "draw/draw_private.h"
  26
  27 #include "util/u_simple_list.h"
  28 #include "util/u_upload_mgr.h"
  29
  30 #include "r300_context.h"
  31 #include "r300_cs.h"
  32 #include "r300_emit.h"
  33
  34 static void r300_flush(struct pipe_context* pipe,
  35                        unsigned flags,
  36                        struct pipe_fence_handle** fence)
  37 {
  38     struct r300_context *r300 = r300_context(pipe);
  39     struct r300_atom *atom;
  40     struct r300_winsys_bo **rfence = (struct r300_winsys_bo**)fence;
  41
  42     if (r300->draw && !r300->draw_vbo_locked)
  43         r300_draw_flush_vbuf(r300);
  44
  45     if (rfence) {
  46         /* Create a fence, which is a dummy BO. */
  47         *rfence = r300->rws->buffer_create(r300->rws, 1, 1,
  48                                            PIPE_BIND_VERTEX_BUFFER,
  49                                            PIPE_USAGE_STATIC,
  50                                            R300_DOMAIN_GTT);
  51         /* Add the fence as a dummy relocation. */
  52         r300->rws->cs_add_reloc(r300->cs,
  53                                 r300->rws->buffer_get_cs_handle(*rfence),
  54                                 R300_DOMAIN_GTT, R300_DOMAIN_GTT);
  55     }
  56
  57     if (r300->dirty_hw) {
  58         r300_emit_hyperz_end(r300);
  59         r300_emit_query_end(r300);
  60         if (r300->screen->caps.index_bias_supported)
  61             r500_emit_index_bias(r300, 0);
  62
  63         r300->flush_counter++;
  64         r300->rws->cs_flush(r300->cs);
  65         r300->dirty_hw = 0;
  66
  67         /* New kitchen sink, baby. */
  68         foreach_atom(r300, atom) {
  69             if (atom->state || atom->allow_null_state) {
  70                 r300_mark_atom_dirty(r300, atom);
  71             }
  72         }
  73         r300->vertex_arrays_dirty = TRUE;
  74
  75         /* Unmark HWTCL state for SWTCL. */
  76         if (!r300->screen->caps.has_tcl) {
  77             r300->vs_state.dirty = FALSE;
  78             r300->vs_constants.dirty = FALSE;
  79         }
  80     } else {
  81         if (rfence) {
  82             /* We have to create a fence object, but the command stream is empty
  83              * and we cannot emit an empty CS. We must write some regs then. */
  84             CS_LOCALS(r300);
  85             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
  86             r300->rws->cs_flush(r300->cs);
  87         } else {
  88             /* Even if hw is not dirty, we should at least reset the CS in case
  89              * the space checking failed for the first draw operation. */
  90             r300->rws->cs_flush(r300->cs);
  91         }
  92     }
  93
  94     if (flags & PIPE_FLUSH_FRAME) {
  95         r300->rws->cs_sync_flush(r300->cs);
  96     }
  97 }
  98
  99 void r300_init_flush_functions(struct r300_context* r300)
 100 {
 101     r300->context.flush = r300_flush;
 102 }