dri_drawable.c revision 873ddf547d5aeb68f37a172d73131c6bc51101f6 
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
36#include "pipe/p_screen.h"
37#include "util/u_format.h"
38#include "util/u_memory.h"
39#include "util/u_inlines.h"
40
41
42static boolean
43dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
44                            const enum st_attachment_type *statts,
45                            unsigned count,
46                            struct pipe_resource **out)
47{
48   struct dri_drawable *drawable =
49      (struct dri_drawable *) stfbi->st_manager_private;
50   struct dri_screen *screen = dri_screen(drawable->sPriv);
51   unsigned statt_mask, new_mask;
52   boolean new_stamp;
53   int i;
54
55   statt_mask = 0x0;
56   for (i = 0; i < count; i++)
57      statt_mask |= (1 << statts[i]);
58
59   /* record newly allocated textures */
60   new_mask = (statt_mask & ~drawable->texture_mask);
61
62   /*
63    * dPriv->pStamp is the server stamp.  It should be accessed with a lock, at
64    * least for DRI1.  dPriv->lastStamp is the client stamp.  It has the value
65    * of the server stamp when last checked.
66    */
67   new_stamp = (drawable->texture_stamp != drawable->dPriv->lastStamp);
68
69   if (new_stamp || new_mask || screen->broken_invalidate) {
70      if (new_stamp && drawable->update_drawable_info)
71         drawable->update_drawable_info(drawable);
72
73      drawable->allocate_textures(drawable, statts, count);
74
75      /* add existing textures */
76      for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
77         if (drawable->textures[i])
78            statt_mask |= (1 << i);
79      }
80
81      drawable->texture_stamp = drawable->dPriv->lastStamp;
82      drawable->texture_mask = statt_mask;
83   }
84
85   if (!out)
86      return TRUE;
87
88   for (i = 0; i < count; i++) {
89      out[i] = NULL;
90      pipe_resource_reference(&out[i], drawable->textures[statts[i]]);
91   }
92
93   return TRUE;
94}
95
96static boolean
97dri_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
98                               enum st_attachment_type statt)
99{
100   struct dri_drawable *drawable =
101      (struct dri_drawable *) stfbi->st_manager_private;
102
103   /* XXX remove this and just set the correct one on the framebuffer */
104   drawable->flush_frontbuffer(drawable, statt);
105
106   return TRUE;
107}
108
109/**
110 * This is called when we need to set up GL rendering to a new X window.
111 */
112boolean
113dri_create_buffer(__DRIscreen * sPriv,
114		  __DRIdrawable * dPriv,
115		  const __GLcontextModes * visual, boolean isPixmap)
116{
117   struct dri_screen *screen = sPriv->private;
118   struct dri_drawable *drawable = NULL;
119
120   if (isPixmap)
121      goto fail;		       /* not implemented */
122
123   drawable = CALLOC_STRUCT(dri_drawable);
124   if (drawable == NULL)
125      goto fail;
126
127   dri_fill_st_visual(&drawable->stvis, screen, visual);
128
129   /* setup the st_framebuffer_iface */
130   drawable->base.visual = &drawable->stvis;
131   drawable->base.flush_front = dri_st_framebuffer_flush_front;
132   drawable->base.validate = dri_st_framebuffer_validate;
133   drawable->base.st_manager_private = (void *) drawable;
134
135   drawable->sPriv = sPriv;
136   drawable->dPriv = dPriv;
137   dPriv->driverPrivate = (void *)drawable;
138
139   return GL_TRUE;
140fail:
141   FREE(drawable);
142   return GL_FALSE;
143}
144
145void
146dri_destroy_buffer(__DRIdrawable * dPriv)
147{
148   struct dri_drawable *drawable = dri_drawable(dPriv);
149   int i;
150
151   pipe_surface_reference(&drawable->drisw_surface, NULL);
152
153   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
154      pipe_resource_reference(&drawable->textures[i], NULL);
155
156   FREE(drawable);
157}
158
159/**
160 * Validate the texture at an attachment.  Allocate the texture if it does not
161 * exist.
162 */
163void
164dri_drawable_validate_att(struct dri_drawable *drawable,
165                          enum st_attachment_type statt)
166{
167   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
168   unsigned i, count = 0;
169
170   /* check if buffer already exists */
171   if (drawable->texture_mask & (1 << statt))
172      return;
173
174   /* make sure DRI2 does not destroy existing buffers */
175   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
176      if (drawable->texture_mask & (1 << i)) {
177         statts[count++] = i;
178      }
179   }
180   statts[count++] = statt;
181
182   drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
183
184   /* this calles into the manager */
185   drawable->base.validate(&drawable->base, statts, count, NULL);
186}
187
188/**
189 * Get the format and binding of an attachment.
190 */
191void
192dri_drawable_get_format(struct dri_drawable *drawable,
193                        enum st_attachment_type statt,
194                        enum pipe_format *format,
195                        unsigned *bind)
196{
197   switch (statt) {
198   case ST_ATTACHMENT_FRONT_LEFT:
199   case ST_ATTACHMENT_BACK_LEFT:
200   case ST_ATTACHMENT_FRONT_RIGHT:
201   case ST_ATTACHMENT_BACK_RIGHT:
202      *format = drawable->stvis.color_format;
203      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
204      break;
205   case ST_ATTACHMENT_DEPTH_STENCIL:
206      *format = drawable->stvis.depth_stencil_format;
207      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
208      break;
209   default:
210      *format = PIPE_FORMAT_NONE;
211      *bind = 0;
212      break;
213   }
214}
215
216/* vim: set sw=3 ts=8 sts=3 expandtab: */
217