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/simple_list.h"
  28 #include "util/u_upload_mgr.h"
  29
  30 #include "util/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                                    struct pipe_fence_handle **fence)
  39 {
  40     struct r300_atom *atom;
  41
  42     r300_emit_hyperz_end(r300);
  43     r300_emit_query_end(r300);
  44     if (r300->screen->caps.is_r500)
  45         r500_emit_index_bias(r300, 0);
  46
  47     /* The DDX doesn't set these regs. */
  48     {
  49         CS_LOCALS(r300);
  50         OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
  51         OUT_CS(0x66666666);
  52         OUT_CS(0x6666666);
  53     }
  54
  55     r300->flush_counter++;
  56     r300->rws->cs_flush(r300->cs, flags, fence);
  57     r300->dirty_hw = 0;
  58
  59     /* New kitchen sink, baby. */
  60     foreach_atom(r300, atom) {
  61         if (atom->state || atom->allow_null_state) {
  62             r300_mark_atom_dirty(r300, atom);
  63         }
  64     }
  65     r300->vertex_arrays_dirty = TRUE;
  66
  67     /* Unmark HWTCL state for SWTCL. */
  68     if (!r300->screen->caps.has_tcl) {
  69         r300->vs_state.dirty = FALSE;
  70         r300->vs_constants.dirty = FALSE;
  71         r300->clip_state.dirty = FALSE;
  72     }
  73 }
  74
  75 void r300_flush(struct pipe_context *pipe,
  76                 unsigned flags,
  77                 struct pipe_fence_handle **fence)
  78 {
  79     struct r300_context *r300 = r300_context(pipe);
  80
  81     if (r300->dirty_hw) {
  82         r300_flush_and_cleanup(r300, flags, fence);
  83     } else {
  84         if (fence) {
  85             /* We have to create a fence object, but the command stream is empty
  86              * and we cannot emit an empty CS. Let's write to some reg. */
  87             CS_LOCALS(r300);
  88             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
  89             r300->rws->cs_flush(r300->cs, flags, fence);
  90         } else {
  91             /* Even if hw is not dirty, we should at least reset the CS in case
  92              * the space checking failed for the first draw operation. */
  93             r300->rws->cs_flush(r300->cs, flags, NULL);
  94         }
  95     }
  96
  97     /* Update Hyper-Z status. */
  98     if (r300->hyperz_enabled) {
  99         /* If there was a Z clear, keep Hyper-Z access. */
 100         if (r300->num_z_clears) {
 101             r300->hyperz_time_of_last_flush = os_time_get();
 102             r300->num_z_clears = 0;
 103         } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
 104             /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
 105             r300->hiz_in_use = FALSE;
 106
 107             /* Decompress the Z buffer. */
 108             if (r300->zmask_in_use) {
 109                 if (r300->locked_zbuffer) {
 110                     r300_decompress_zmask_locked(r300);
 111                 } else {
 112                     r300_decompress_zmask(r300);
 113                 }
 114
 115                 if (fence && *fence)
 116                     r300->rws->fence_reference(fence, NULL);
 117                 r300_flush_and_cleanup(r300, flags, fence);
 118             }
 119
 120             /* Revoke Hyper-Z access, so that some other process can take it. */
 121             r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
 122                                           FALSE);
 123             r300->hyperz_enabled = FALSE;
 124         }
 125     }
 126 }
 127
 128 static void r300_flush_wrapped(struct pipe_context *pipe,
 129                                struct pipe_fence_handle **fence,
 130                                unsigned flags)
 131 {
 132     if (flags & PIPE_FLUSH_HINT_FINISH)
 133         flags &= ~PIPE_FLUSH_ASYNC;
 134
 135     r300_flush(pipe, flags, fence);
 136 }
 137
 138 void r300_init_flush_functions(struct r300_context* r300)
 139 {
 140     r300->context.flush = r300_flush_wrapped;
 141 }