exa_classic.c revision 35c4bbdf 
1/*
2 * Copyright © 2009 Maarten Maathuis
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 */
24
25#ifdef HAVE_DIX_CONFIG_H
26#include <dix-config.h>
27#endif
28
29#include <string.h>
30
31#include "exa_priv.h"
32#include "exa.h"
33
34/* This file holds the classic exa specific implementation. */
35
36static _X_INLINE void *
37ExaGetPixmapAddress(PixmapPtr p)
38{
39    ExaPixmapPriv(p);
40
41    if (pExaPixmap->use_gpu_copy && pExaPixmap->fb_ptr)
42        return pExaPixmap->fb_ptr;
43    else
44        return pExaPixmap->sys_ptr;
45}
46
47/**
48 * exaCreatePixmap() creates a new pixmap.
49 *
50 * If width and height are 0, this won't be a full-fledged pixmap and it will
51 * get ModifyPixmapHeader() called on it later.  So, we mark it as pinned, because
52 * ModifyPixmapHeader() would break migration.  These types of pixmaps are used
53 * for scratch pixmaps, or to represent the visible screen.
54 */
55PixmapPtr
56exaCreatePixmap_classic(ScreenPtr pScreen, int w, int h, int depth,
57                        unsigned usage_hint)
58{
59    PixmapPtr pPixmap;
60    ExaPixmapPrivPtr pExaPixmap;
61    BoxRec box;
62    int bpp;
63
64    ExaScreenPriv(pScreen);
65
66    if (w > 32767 || h > 32767)
67        return NullPixmap;
68
69    swap(pExaScr, pScreen, CreatePixmap);
70    pPixmap = pScreen->CreatePixmap(pScreen, w, h, depth, usage_hint);
71    swap(pExaScr, pScreen, CreatePixmap);
72
73    if (!pPixmap)
74        return NULL;
75
76    pExaPixmap = ExaGetPixmapPriv(pPixmap);
77    pExaPixmap->driverPriv = NULL;
78
79    bpp = pPixmap->drawable.bitsPerPixel;
80
81    pExaPixmap->driverPriv = NULL;
82    /* Scratch pixmaps may have w/h equal to zero, and may not be
83     * migrated.
84     */
85    if (!w || !h)
86        pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
87    else
88        pExaPixmap->score = EXA_PIXMAP_SCORE_INIT;
89
90    pExaPixmap->sys_ptr = pPixmap->devPrivate.ptr;
91    pExaPixmap->sys_pitch = pPixmap->devKind;
92
93    pPixmap->devPrivate.ptr = NULL;
94    pExaPixmap->use_gpu_copy = FALSE;
95
96    pExaPixmap->fb_ptr = NULL;
97    exaSetFbPitch(pExaScr, pExaPixmap, w, h, bpp);
98    pExaPixmap->fb_size = pExaPixmap->fb_pitch * h;
99
100    if (pExaPixmap->fb_pitch > 131071) {
101        swap(pExaScr, pScreen, DestroyPixmap);
102        pScreen->DestroyPixmap(pPixmap);
103        swap(pExaScr, pScreen, DestroyPixmap);
104        return NULL;
105    }
106
107    /* Set up damage tracking */
108    pExaPixmap->pDamage = DamageCreate(NULL, NULL,
109                                       DamageReportNone, TRUE,
110                                       pScreen, pPixmap);
111
112    if (pExaPixmap->pDamage == NULL) {
113        swap(pExaScr, pScreen, DestroyPixmap);
114        pScreen->DestroyPixmap(pPixmap);
115        swap(pExaScr, pScreen, DestroyPixmap);
116        return NULL;
117    }
118
119    DamageRegister(&pPixmap->drawable, pExaPixmap->pDamage);
120    /* This ensures that pending damage reflects the current operation. */
121    /* This is used by exa to optimize migration. */
122    DamageSetReportAfterOp(pExaPixmap->pDamage, TRUE);
123
124    pExaPixmap->area = NULL;
125
126    /* We set the initial pixmap as completely valid for a simple reason.
127     * Imagine a 1000x1000 pixmap, it has 1 million pixels, 250000 of which
128     * could form single pixel rects as part of a region. Setting the complete region
129     * as valid is a natural defragmentation of the region.
130     */
131    box.x1 = 0;
132    box.y1 = 0;
133    box.x2 = w;
134    box.y2 = h;
135    RegionInit(&pExaPixmap->validSys, &box, 0);
136    RegionInit(&pExaPixmap->validFB, &box, 0);
137
138    exaSetAccelBlock(pExaScr, pExaPixmap, w, h, bpp);
139
140    /* During a fallback we must prepare access. */
141    if (pExaScr->fallback_counter)
142        exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_AUX_DEST);
143
144    return pPixmap;
145}
146
147Bool
148exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height,
149                              int depth, int bitsPerPixel, int devKind,
150                              void *pPixData)
151{
152    ScreenPtr pScreen;
153    ExaScreenPrivPtr pExaScr;
154    ExaPixmapPrivPtr pExaPixmap;
155    Bool ret;
156
157    if (!pPixmap)
158        return FALSE;
159
160    pScreen = pPixmap->drawable.pScreen;
161    pExaScr = ExaGetScreenPriv(pScreen);
162    pExaPixmap = ExaGetPixmapPriv(pPixmap);
163
164    if (pExaPixmap) {
165        if (pPixData)
166            pExaPixmap->sys_ptr = pPixData;
167
168        if (devKind > 0)
169            pExaPixmap->sys_pitch = devKind;
170
171        /* Classic EXA:
172         * - Framebuffer.
173         * - Scratch pixmap with gpu memory.
174         */
175        if (pExaScr->info->memoryBase && pPixData) {
176            if ((CARD8 *) pPixData >= pExaScr->info->memoryBase &&
177                ((CARD8 *) pPixData - pExaScr->info->memoryBase) <
178                pExaScr->info->memorySize) {
179                pExaPixmap->fb_ptr = pPixData;
180                pExaPixmap->fb_pitch = devKind;
181                pExaPixmap->use_gpu_copy = TRUE;
182            }
183        }
184
185        if (width > 0 && height > 0 && bitsPerPixel > 0) {
186            exaSetFbPitch(pExaScr, pExaPixmap, width, height, bitsPerPixel);
187
188            exaSetAccelBlock(pExaScr, pExaPixmap, width, height, bitsPerPixel);
189        }
190
191        /* Pixmaps subject to ModifyPixmapHeader will be pinned to system or
192         * gpu memory, so there's no need to track damage.
193         */
194        if (pExaPixmap->pDamage) {
195            DamageDestroy(pExaPixmap->pDamage);
196            pExaPixmap->pDamage = NULL;
197        }
198    }
199
200    swap(pExaScr, pScreen, ModifyPixmapHeader);
201    ret = pScreen->ModifyPixmapHeader(pPixmap, width, height, depth,
202                                      bitsPerPixel, devKind, pPixData);
203    swap(pExaScr, pScreen, ModifyPixmapHeader);
204
205    /* Always NULL this, we don't want lingering pointers. */
206    pPixmap->devPrivate.ptr = NULL;
207
208    return ret;
209}
210
211Bool
212exaDestroyPixmap_classic(PixmapPtr pPixmap)
213{
214    ScreenPtr pScreen = pPixmap->drawable.pScreen;
215
216    ExaScreenPriv(pScreen);
217    Bool ret;
218
219    if (pPixmap->refcnt == 1) {
220        ExaPixmapPriv(pPixmap);
221
222        exaDestroyPixmap(pPixmap);
223
224        if (pExaPixmap->area) {
225            DBG_PIXMAP(("-- 0x%p (0x%x) (%dx%d)\n",
226                        (void *) pPixmap->drawable.id,
227                        ExaGetPixmapPriv(pPixmap)->area->offset,
228                        pPixmap->drawable.width, pPixmap->drawable.height));
229            /* Free the offscreen area */
230            exaOffscreenFree(pPixmap->drawable.pScreen, pExaPixmap->area);
231            pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
232            pPixmap->devKind = pExaPixmap->sys_pitch;
233        }
234        RegionUninit(&pExaPixmap->validSys);
235        RegionUninit(&pExaPixmap->validFB);
236    }
237
238    swap(pExaScr, pScreen, DestroyPixmap);
239    ret = pScreen->DestroyPixmap(pPixmap);
240    swap(pExaScr, pScreen, DestroyPixmap);
241
242    return ret;
243}
244
245Bool
246exaPixmapHasGpuCopy_classic(PixmapPtr pPixmap)
247{
248    ScreenPtr pScreen = pPixmap->drawable.pScreen;
249
250    ExaScreenPriv(pScreen);
251    ExaPixmapPriv(pPixmap);
252    Bool ret;
253
254    if (pExaScr->info->PixmapIsOffscreen) {
255        void *old_ptr = pPixmap->devPrivate.ptr;
256
257        pPixmap->devPrivate.ptr = ExaGetPixmapAddress(pPixmap);
258        ret = pExaScr->info->PixmapIsOffscreen(pPixmap);
259        pPixmap->devPrivate.ptr = old_ptr;
260    }
261    else
262        ret = (pExaPixmap->use_gpu_copy && pExaPixmap->fb_ptr);
263
264    return ret;
265}
266