dri_drawable.c revision 94ccc31ba4f64ac480137fd90f1ded44d2072f6e 
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 struct gl_config * 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->screen = screen;
136   drawable->sPriv = sPriv;
137   drawable->dPriv = dPriv;
138   dPriv->driverPrivate = (void *)drawable;
139
140   return GL_TRUE;
141fail:
142   FREE(drawable);
143   return GL_FALSE;
144}
145
146void
147dri_destroy_buffer(__DRIdrawable * dPriv)
148{
149   struct dri_drawable *drawable = dri_drawable(dPriv);
150   int i;
151
152   pipe_surface_reference(&drawable->drisw_surface, NULL);
153
154   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
155      pipe_resource_reference(&drawable->textures[i], NULL);
156
157   FREE(drawable);
158}
159
160/**
161 * Validate the texture at an attachment.  Allocate the texture if it does not
162 * exist.  Used by the TFP extension.
163 */
164static void
165dri_drawable_validate_att(struct dri_drawable *drawable,
166                          enum st_attachment_type statt)
167{
168   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
169   unsigned i, count = 0;
170
171   /* check if buffer already exists */
172   if (drawable->texture_mask & (1 << statt))
173      return;
174
175   /* make sure DRI2 does not destroy existing buffers */
176   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
177      if (drawable->texture_mask & (1 << i)) {
178         statts[count++] = i;
179      }
180   }
181   statts[count++] = statt;
182
183   drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
184
185   drawable->base.validate(&drawable->base, statts, count, NULL);
186}
187
188/**
189 * These are used for GLX_EXT_texture_from_pixmap
190 */
191static void
192dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
193                    GLint format, __DRIdrawable *dPriv)
194{
195   struct dri_context *ctx = dri_context(pDRICtx);
196   struct dri_drawable *drawable = dri_drawable(dPriv);
197   struct pipe_resource *pt;
198
199   dri_drawable_validate_att(drawable, ST_ATTACHMENT_FRONT_LEFT);
200
201   pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
202
203   if (pt) {
204      enum pipe_format internal_format = pt->format;
205
206      if (format == __DRI_TEXTURE_FORMAT_RGB)  {
207         /* only need to cover the formats recognized by dri_fill_st_visual */
208         switch (internal_format) {
209         case PIPE_FORMAT_B8G8R8A8_UNORM:
210            internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
211            break;
212         case PIPE_FORMAT_A8R8G8B8_UNORM:
213            internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
214            break;
215         default:
216            break;
217         }
218      }
219
220      ctx->st->teximage(ctx->st,
221            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
222            0, internal_format, pt, FALSE);
223   }
224}
225
226static void
227dri_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
228                   __DRIdrawable *dPriv)
229{
230   dri_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
231}
232
233const __DRItexBufferExtension driTexBufferExtension = {
234    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
235   dri_set_tex_buffer,
236   dri_set_tex_buffer2,
237   NULL,
238};
239
240/**
241 * Get the format and binding of an attachment.
242 */
243void
244dri_drawable_get_format(struct dri_drawable *drawable,
245                        enum st_attachment_type statt,
246                        enum pipe_format *format,
247                        unsigned *bind)
248{
249   switch (statt) {
250   case ST_ATTACHMENT_FRONT_LEFT:
251   case ST_ATTACHMENT_BACK_LEFT:
252   case ST_ATTACHMENT_FRONT_RIGHT:
253   case ST_ATTACHMENT_BACK_RIGHT:
254      *format = drawable->stvis.color_format;
255      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
256      break;
257   case ST_ATTACHMENT_DEPTH_STENCIL:
258      *format = drawable->stvis.depth_stencil_format;
259      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
260      break;
261   default:
262      *format = PIPE_FORMAT_NONE;
263      *bind = 0;
264      break;
265   }
266}
267
268/* vim: set sw=3 ts=8 sts=3 expandtab: */
269