src/gallium/state_trackers/dri/common/dri_drawable.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, 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  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #include "dri_screen.h"
  33 #include "dri_context.h"
  34 #include "dri_drawable.h"
  35 #include "dri1_helper.h"
  36
  37 #include "pipe/p_screen.h"
  38 #include "util/u_format.h"
  39 #include "util/u_memory.h"
  40 #include "util/u_inlines.h"
  41
  42
  43 static boolean
  44 dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
  45                             const enum st_attachment_type *statts,
  46                             unsigned count,
  47                             struct pipe_resource **out)
  48 {
  49    struct dri_drawable *drawable =
  50       (struct dri_drawable *) stfbi->st_manager_private;
  51    struct dri_screen *screen = dri_screen(drawable->sPriv);
  52    unsigned statt_mask, new_mask;
  53    boolean new_stamp;
  54    int i;
  55
  56    statt_mask = 0x0;
  57    for (i = 0; i < count; i++)
  58       statt_mask |= (1 << statts[i]);
  59
  60    /* record newly allocated textures */
  61    new_mask = (statt_mask & ~drawable->texture_mask);
  62
  63    /*
  64     * dPriv->pStamp is the server stamp.  It should be accessed with a lock, at
  65     * least for DRI1.  dPriv->lastStamp is the client stamp.  It has the value
  66     * of the server stamp when last checked.
  67     */
  68    new_stamp = (drawable->texture_stamp != drawable->dPriv->lastStamp);
  69
  70    if (new_stamp || new_mask) {
  71       if (new_stamp && screen->update_drawable_info)
  72          screen->update_drawable_info(drawable);
  73
  74       screen->allocate_textures(drawable, statts, count);
  75
  76       /* add existing textures */
  77       for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
  78          if (drawable->textures[i])
  79             statt_mask |= (1 << i);
  80       }
  81
  82       drawable->texture_stamp = drawable->dPriv->lastStamp;
  83       drawable->texture_mask = statt_mask;
  84    }
  85
  86    if (!out)
  87       return TRUE;
  88
  89    for (i = 0; i < count; i++) {
  90       out[i] = NULL;
  91       pipe_resource_reference(&out[i], drawable->textures[statts[i]]);
  92    }
  93
  94    return TRUE;
  95 }
  96
  97 static boolean
  98 dri_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
  99                                enum st_attachment_type statt)
 100 {
 101    struct dri_drawable *drawable =
 102       (struct dri_drawable *) stfbi->st_manager_private;
 103    struct dri_screen *screen = dri_screen(drawable->sPriv);
 104
 105    /* XXX remove this and just set the correct one on the framebuffer */
 106    screen->flush_frontbuffer(drawable, statt);
 107
 108    return TRUE;
 109 }
 110
 111 /**
 112  * This is called when we need to set up GL rendering to a new X window.
 113  */
 114 boolean
 115 dri_create_buffer(__DRIscreen * sPriv,
 116                   __DRIdrawable * dPriv,
 117                   const __GLcontextModes * visual, boolean isPixmap)
 118 {
 119    struct dri_screen *screen = sPriv->private;
 120    struct dri_drawable *drawable = NULL;
 121
 122    if (isPixmap)
 123       goto fail;                       /* not implemented */
 124
 125    drawable = CALLOC_STRUCT(dri_drawable);
 126    if (drawable == NULL)
 127       goto fail;
 128
 129    dri_fill_st_visual(&drawable->stvis, screen, visual);
 130
 131    /* setup the st_framebuffer_iface */
 132    drawable->base.visual = &drawable->stvis;
 133    drawable->base.flush_front = dri_st_framebuffer_flush_front;
 134    drawable->base.validate = dri_st_framebuffer_validate;
 135    drawable->base.st_manager_private = (void *) drawable;
 136
 137    drawable->sPriv = sPriv;
 138    drawable->dPriv = dPriv;
 139    dPriv->driverPrivate = (void *)drawable;
 140
 141    drawable->desired_fences = 2;
 142
 143    return GL_TRUE;
 144 fail:
 145    FREE(drawable);
 146    return GL_FALSE;
 147 }
 148
 149 void
 150 dri_destroy_buffer(__DRIdrawable * dPriv)
 151 {
 152    struct dri_drawable *drawable = dri_drawable(dPriv);
 153    int i;
 154
 155    dri1_swap_fences_clear(drawable);
 156
 157    dri1_destroy_pipe_surface(drawable);
 158
 159    for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 160       pipe_resource_reference(&drawable->textures[i], NULL);
 161
 162    drawable->desired_fences = 0;
 163
 164    FREE(drawable);
 165 }
 166
 167 /**
 168  * Validate the texture at an attachment.  Allocate the texture if it does not
 169  * exist.
 170  */
 171 void
 172 dri_drawable_validate_att(struct dri_drawable *drawable,
 173                           enum st_attachment_type statt)
 174 {
 175    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 176    unsigned i, count = 0;
 177
 178    /* check if buffer already exists */
 179    if (drawable->texture_mask & (1 << statt))
 180       return;
 181
 182    /* make sure DRI2 does not destroy existing buffers */
 183    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 184       if (drawable->texture_mask & (1 << i)) {
 185          statts[count++] = i;
 186       }
 187    }
 188    statts[count++] = statt;
 189
 190    drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
 191
 192    /* this calles into the manager */
 193    drawable->base.validate(&drawable->base, statts, count, NULL);
 194 }
 195
 196 /**
 197  * Get the format and binding of an attachment.
 198  */
 199 void
 200 dri_drawable_get_format(struct dri_drawable *drawable,
 201                         enum st_attachment_type statt,
 202                         enum pipe_format *format,
 203                         unsigned *bind)
 204 {
 205    switch (statt) {
 206    case ST_ATTACHMENT_FRONT_LEFT:
 207    case ST_ATTACHMENT_BACK_LEFT:
 208    case ST_ATTACHMENT_FRONT_RIGHT:
 209    case ST_ATTACHMENT_BACK_RIGHT:
 210       *format = drawable->stvis.color_format;
 211       *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 212       break;
 213    case ST_ATTACHMENT_DEPTH_STENCIL:
 214       *format = drawable->stvis.depth_stencil_format;
 215       *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 216       break;
 217    default:
 218       *format = PIPE_FORMAT_NONE;
 219       *bind = 0;
 220       break;
 221    }
 222 }
 223
 224 /* vim: set sw=3 ts=8 sts=3 expandtab: */