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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * 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, sub license, 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 portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28  /*
     29   * Authors:
     30   *   Keith Whitwell <keithw (at) vmware.com>
     31   *   Brian Paul
     32   */
     33 
     34 #include "main/glheader.h"
     35 #include "main/macros.h"
     36 #include "main/context.h"
     37 #include "st_context.h"
     38 #include "st_cb_bitmap.h"
     39 #include "st_cb_flush.h"
     40 #include "st_cb_clear.h"
     41 #include "st_cb_fbo.h"
     42 #include "st_manager.h"
     43 #include "pipe/p_context.h"
     44 #include "pipe/p_defines.h"
     45 #include "pipe/p_screen.h"
     46 #include "util/u_gen_mipmap.h"
     47 
     48 
     49 void st_flush(struct st_context *st,
     50               struct pipe_fence_handle **fence,
     51               unsigned flags)
     52 {
     53    st_flush_bitmap_cache(st);
     54 
     55    st->pipe->flush(st->pipe, fence, flags);
     56 }
     57 
     58 
     59 /**
     60  * Flush, and wait for completion.
     61  */
     62 void st_finish( struct st_context *st )
     63 {
     64    struct pipe_fence_handle *fence = NULL;
     65 
     66    st_flush(st, &fence, PIPE_FLUSH_ASYNC | PIPE_FLUSH_HINT_FINISH);
     67 
     68    if(fence) {
     69       st->pipe->screen->fence_finish(st->pipe->screen, NULL, fence,
     70                                      PIPE_TIMEOUT_INFINITE);
     71       st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
     72    }
     73 
     74    st_manager_flush_swapbuffers();
     75 }
     76 
     77 
     78 
     79 /**
     80  * Called via ctx->Driver.Flush()
     81  */
     82 static void st_glFlush(struct gl_context *ctx)
     83 {
     84    struct st_context *st = st_context(ctx);
     85 
     86    /* Don't call st_finish() here.  It is not the state tracker's
     87     * responsibilty to inject sleeps in the hope of avoiding buffer
     88     * synchronization issues.  Calling finish() here will just hide
     89     * problems that need to be fixed elsewhere.
     90     */
     91    st_flush(st, NULL, 0);
     92 
     93    st_manager_flush_frontbuffer(st);
     94 }
     95 
     96 
     97 /**
     98  * Called via ctx->Driver.Finish()
     99  */
    100 static void st_glFinish(struct gl_context *ctx)
    101 {
    102    struct st_context *st = st_context(ctx);
    103 
    104    st_finish(st);
    105 
    106    st_manager_flush_frontbuffer(st);
    107 }
    108 
    109 
    110 static GLenum
    111 gl_reset_status_from_pipe_reset_status(enum pipe_reset_status status)
    112 {
    113    switch (status) {
    114    case PIPE_NO_RESET:
    115       return GL_NO_ERROR;
    116    case PIPE_GUILTY_CONTEXT_RESET:
    117       return GL_GUILTY_CONTEXT_RESET_ARB;
    118    case PIPE_INNOCENT_CONTEXT_RESET:
    119       return GL_INNOCENT_CONTEXT_RESET_ARB;
    120    case PIPE_UNKNOWN_CONTEXT_RESET:
    121       return GL_UNKNOWN_CONTEXT_RESET_ARB;
    122    default:
    123       assert(0);
    124       return GL_NO_ERROR;
    125    }
    126 }
    127 
    128 
    129 /**
    130  * Query information about GPU resets observed by this context
    131  *
    132  * Called via \c dd_function_table::GetGraphicsResetStatus.
    133  */
    134 static GLenum
    135 st_get_graphics_reset_status(struct gl_context *ctx)
    136 {
    137    struct st_context *st = st_context(ctx);
    138    enum pipe_reset_status status;
    139 
    140    if (st->reset_status != PIPE_NO_RESET) {
    141       status = st->reset_status;
    142       st->reset_status = PIPE_NO_RESET;
    143    } else {
    144       status = st->pipe->get_device_reset_status(st->pipe);
    145    }
    146 
    147    return gl_reset_status_from_pipe_reset_status(status);
    148 }
    149 
    150 
    151 static void
    152 st_device_reset_callback(void *data, enum pipe_reset_status status)
    153 {
    154    struct st_context *st = data;
    155 
    156    assert(status != PIPE_NO_RESET);
    157 
    158    st->reset_status = status;
    159    _mesa_set_context_lost_dispatch(st->ctx);
    160 }
    161 
    162 
    163 void
    164 st_install_device_reset_callback(struct st_context *st)
    165 {
    166    if (st->pipe->set_device_reset_callback) {
    167       struct pipe_device_reset_callback cb;
    168       cb.reset = st_device_reset_callback;
    169       cb.data = st;
    170       st->pipe->set_device_reset_callback(st->pipe, &cb);
    171    }
    172 }
    173 
    174 
    175 void st_init_flush_functions(struct pipe_screen *screen,
    176                              struct dd_function_table *functions)
    177 {
    178    functions->Flush = st_glFlush;
    179    functions->Finish = st_glFinish;
    180 
    181    if (screen->get_param(screen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY))
    182       functions->GetGraphicsResetStatus = st_get_graphics_reset_status;
    183 }
    184