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 "os/os_time.h"
  31
  32 #include "r300_context.h"
  33 #include "r300_cs.h"
  34 #include "r300_emit.h"
  35
  36
  37 static void r300_flush_and_cleanup(struct r300_context *r300, unsigned flags)
  38 {
  39     struct r300_atom *atom;
  40
  41     r300_emit_hyperz_end(r300);
  42     r300_emit_query_end(r300);
  43     if (r300->screen->caps.is_r500)
  44         r500_emit_index_bias(r300, 0);
  45
  46     r300->flush_counter++;
  47     r300->rws->cs_flush(r300->cs, flags);
  48     r300->dirty_hw = 0;
  49
  50     /* New kitchen sink, baby. */
  51     foreach_atom(r300, atom) {
  52         if (atom->state || atom->allow_null_state) {
  53             r300_mark_atom_dirty(r300, atom);
  54         }
  55     }
  56     r300->vertex_arrays_dirty = TRUE;
  57
  58     /* Unmark HWTCL state for SWTCL. */
  59     if (!r300->screen->caps.has_tcl) {
  60         r300->vs_state.dirty = FALSE;
  61         r300->vs_constants.dirty = FALSE;
  62         r300->clip_state.dirty = FALSE;
  63     }
  64 }
  65
  66 void r300_flush(struct pipe_context *pipe,
  67                 unsigned flags,
  68                 struct pipe_fence_handle **fence)
  69 {
  70     struct r300_context *r300 = r300_context(pipe);
  71     struct pb_buffer **rfence = (struct pb_buffer**)fence;
  72
  73     if (r300->screen->info.drm_minor >= 12) {
  74         flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
  75     }
  76
  77     if (rfence) {
  78         /* Create a fence, which is a dummy BO. */
  79         *rfence = r300->rws->buffer_create(r300->rws, 1, 1, TRUE,
  80                                            RADEON_DOMAIN_GTT);
  81         /* Add the fence as a dummy relocation. */
  82         r300->rws->cs_add_reloc(r300->cs,
  83                                 r300->rws->buffer_get_cs_handle(*rfence),
  84                                 RADEON_USAGE_READWRITE, RADEON_DOMAIN_GTT);
  85     }
  86
  87     if (r300->dirty_hw) {
  88         r300_flush_and_cleanup(r300, flags);
  89     } else {
  90         if (rfence) {
  91             /* We have to create a fence object, but the command stream is empty
  92              * and we cannot emit an empty CS. Let's write to some reg. */
  93             CS_LOCALS(r300);
  94             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
  95             r300->rws->cs_flush(r300->cs, flags);
  96         } else {
  97             /* Even if hw is not dirty, we should at least reset the CS in case
  98              * the space checking failed for the first draw operation. */
  99             r300->rws->cs_flush(r300->cs, flags);
 100         }
 101     }
 102
 103     /* Update Hyper-Z status. */
 104     if (r300->hyperz_enabled) {
 105         /* If there was a Z clear, keep Hyper-Z access. */
 106         if (r300->num_z_clears) {
 107             r300->hyperz_time_of_last_flush = os_time_get();
 108             r300->num_z_clears = 0;
 109         } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
 110             /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
 111             r300->hiz_in_use = FALSE;
 112
 113             /* Decompress the Z buffer. */
 114             if (r300->zmask_in_use) {
 115                 if (r300->locked_zbuffer) {
 116                     r300_decompress_zmask_locked(r300);
 117                 } else {
 118                     r300_decompress_zmask(r300);
 119                 }
 120
 121                 r300_flush_and_cleanup(r300, flags);
 122             }
 123
 124             /* Revoke Hyper-Z access, so that some other process can take it. */
 125             r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
 126                                           FALSE);
 127             r300->hyperz_enabled = FALSE;
 128         }
 129     }
 130 }
 131
 132 static void r300_flush_wrapped(struct pipe_context *pipe,
 133                                struct pipe_fence_handle **fence,
 134                                enum pipe_flush_flags flags)
 135 {
 136     r300_flush(pipe,
 137                flags & PIPE_FLUSH_END_OF_FRAME ? RADEON_FLUSH_END_OF_FRAME : 0,
 138                fence);
 139 }
 140
 141 void r300_init_flush_functions(struct r300_context* r300)
 142 {
 143     r300->context.flush = r300_flush_wrapped;
 144 }