dri_drawable.c revision ca0b0899d8cc20f3e918839e044c55f9a19e9ffe 
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_drawable.h"
34
35#include "pipe/p_screen.h"
36#include "util/u_format.h"
37#include "util/u_memory.h"
38#include "util/u_inlines.h"
39
40
41static boolean
42dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
43                            const enum st_attachment_type *statts,
44                            unsigned count,
45                            struct pipe_resource **out)
46{
47   struct dri_drawable *drawable =
48      (struct dri_drawable *) stfbi->st_manager_private;
49   struct dri_screen *screen = dri_screen(drawable->sPriv);
50   unsigned statt_mask, new_mask;
51   boolean new_stamp;
52   int i;
53
54   statt_mask = 0x0;
55   for (i = 0; i < count; i++)
56      statt_mask |= (1 << statts[i]);
57
58   /* record newly allocated textures */
59   new_mask = (statt_mask & ~drawable->texture_mask);
60
61   /*
62    * dPriv->pStamp is the server stamp.  It should be accessed with a lock, at
63    * least for DRI1.  dPriv->lastStamp is the client stamp.  It has the value
64    * of the server stamp when last checked.
65    */
66   new_stamp = (drawable->texture_stamp != drawable->dPriv->lastStamp);
67
68   if (new_stamp || new_mask || screen->broken_invalidate) {
69      if (new_stamp && drawable->update_drawable_info)
70         drawable->update_drawable_info(drawable);
71
72      drawable->allocate_textures(drawable, statts, count);
73
74      /* add existing textures */
75      for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
76         if (drawable->textures[i])
77            statt_mask |= (1 << i);
78      }
79
80      drawable->texture_stamp = drawable->dPriv->lastStamp;
81      drawable->texture_mask = statt_mask;
82   }
83
84   if (!out)
85      return TRUE;
86
87   for (i = 0; i < count; i++) {
88      out[i] = NULL;
89      pipe_resource_reference(&out[i], drawable->textures[statts[i]]);
90   }
91
92   return TRUE;
93}
94
95static boolean
96dri_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
97                               enum st_attachment_type statt)
98{
99   struct dri_drawable *drawable =
100      (struct dri_drawable *) stfbi->st_manager_private;
101
102   /* XXX remove this and just set the correct one on the framebuffer */
103   drawable->flush_frontbuffer(drawable, statt);
104
105   return TRUE;
106}
107
108/**
109 * This is called when we need to set up GL rendering to a new X window.
110 */
111boolean
112dri_create_buffer(__DRIscreen * sPriv,
113		  __DRIdrawable * dPriv,
114		  const __GLcontextModes * visual, boolean isPixmap)
115{
116   struct dri_screen *screen = sPriv->private;
117   struct dri_drawable *drawable = NULL;
118
119   if (isPixmap)
120      goto fail;		       /* not implemented */
121
122   drawable = CALLOC_STRUCT(dri_drawable);
123   if (drawable == NULL)
124      goto fail;
125
126   dri_fill_st_visual(&drawable->stvis, screen, visual);
127
128   /* setup the st_framebuffer_iface */
129   drawable->base.visual = &drawable->stvis;
130   drawable->base.flush_front = dri_st_framebuffer_flush_front;
131   drawable->base.validate = dri_st_framebuffer_validate;
132   drawable->base.st_manager_private = (void *) drawable;
133
134   drawable->sPriv = sPriv;
135   drawable->dPriv = dPriv;
136   dPriv->driverPrivate = (void *)drawable;
137
138   return GL_TRUE;
139fail:
140   FREE(drawable);
141   return GL_FALSE;
142}
143
144void
145dri_destroy_buffer(__DRIdrawable * dPriv)
146{
147   struct dri_drawable *drawable = dri_drawable(dPriv);
148   int i;
149
150   pipe_surface_reference(&drawable->drisw_surface, NULL);
151
152   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
153      pipe_resource_reference(&drawable->textures[i], NULL);
154
155   FREE(drawable);
156}
157
158/**
159 * Validate the texture at an attachment.  Allocate the texture if it does not
160 * exist.
161 */
162void
163dri_drawable_validate_att(struct dri_drawable *drawable,
164                          enum st_attachment_type statt)
165{
166   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
167   unsigned i, count = 0;
168
169   /* check if buffer already exists */
170   if (drawable->texture_mask & (1 << statt))
171      return;
172
173   /* make sure DRI2 does not destroy existing buffers */
174   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
175      if (drawable->texture_mask & (1 << i)) {
176         statts[count++] = i;
177      }
178   }
179   statts[count++] = statt;
180
181   drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
182
183   /* this calles into the manager */
184   drawable->base.validate(&drawable->base, statts, count, NULL);
185}
186
187/**
188 * Get the format and binding of an attachment.
189 */
190void
191dri_drawable_get_format(struct dri_drawable *drawable,
192                        enum st_attachment_type statt,
193                        enum pipe_format *format,
194                        unsigned *bind)
195{
196   switch (statt) {
197   case ST_ATTACHMENT_FRONT_LEFT:
198   case ST_ATTACHMENT_BACK_LEFT:
199   case ST_ATTACHMENT_FRONT_RIGHT:
200   case ST_ATTACHMENT_BACK_RIGHT:
201      *format = drawable->stvis.color_format;
202      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
203      break;
204   case ST_ATTACHMENT_DEPTH_STENCIL:
205      *format = drawable->stvis.depth_stencil_format;
206      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
207      break;
208   default:
209      *format = PIPE_FORMAT_NONE;
210      *bind = 0;
211      break;
212   }
213}
214
215/* vim: set sw=3 ts=8 sts=3 expandtab: */
216