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 driver allocated pixmaps specific implementation. */
35
36static _X_INLINE void *
37ExaGetPixmapAddress(PixmapPtr p)
38{
39    ExaPixmapPriv(p);
40
41    return pExaPixmap->sys_ptr;
42}
43
44/**
45 * exaCreatePixmap() creates a new pixmap.
46 *
47 * Pixmaps are always marked as pinned, because exa has no control over them.
48 */
49PixmapPtr
50exaCreatePixmap_driver(ScreenPtr pScreen, int w, int h, int depth,
51                       unsigned usage_hint)
52{
53    PixmapPtr pPixmap;
54    ExaPixmapPrivPtr pExaPixmap;
55    int bpp;
56    size_t paddedWidth, datasize;
57
58    ExaScreenPriv(pScreen);
59
60    if (w > 32767 || h > 32767)
61        return NullPixmap;
62
63    swap(pExaScr, pScreen, CreatePixmap);
64    pPixmap = pScreen->CreatePixmap(pScreen, 0, 0, depth, usage_hint);
65    swap(pExaScr, pScreen, CreatePixmap);
66
67    if (!pPixmap)
68        return NULL;
69
70    pExaPixmap = ExaGetPixmapPriv(pPixmap);
71    pExaPixmap->driverPriv = NULL;
72
73    bpp = pPixmap->drawable.bitsPerPixel;
74
75    /* Set this before driver hooks, to allow for driver pixmaps without gpu
76     * memory to back it. These pixmaps have a valid pointer at all times.
77     */
78    pPixmap->devPrivate.ptr = NULL;
79
80    if (pExaScr->info->CreatePixmap2) {
81        int new_pitch = 0;
82
83        pExaPixmap->driverPriv =
84            pExaScr->info->CreatePixmap2(pScreen, w, h, depth, usage_hint, bpp,
85                                         &new_pitch);
86        paddedWidth = pExaPixmap->fb_pitch = new_pitch;
87    }
88    else {
89        paddedWidth = ((w * bpp + FB_MASK) >> FB_SHIFT) * sizeof(FbBits);
90        if (paddedWidth / 4 > 32767 || h > 32767)
91            return NullPixmap;
92
93        exaSetFbPitch(pExaScr, pExaPixmap, w, h, bpp);
94
95        if (paddedWidth < pExaPixmap->fb_pitch)
96            paddedWidth = pExaPixmap->fb_pitch;
97        datasize = h * paddedWidth;
98        pExaPixmap->driverPriv =
99            pExaScr->info->CreatePixmap(pScreen, datasize, 0);
100    }
101
102    if (!pExaPixmap->driverPriv) {
103        swap(pExaScr, pScreen, DestroyPixmap);
104        pScreen->DestroyPixmap(pPixmap);
105        swap(pExaScr, pScreen, DestroyPixmap);
106        return NULL;
107    }
108
109    /* Allow ModifyPixmapHeader to set sys_ptr appropriately. */
110    pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
111    pExaPixmap->fb_ptr = NULL;
112    pExaPixmap->pDamage = NULL;
113    pExaPixmap->sys_ptr = NULL;
114
115    (*pScreen->ModifyPixmapHeader) (pPixmap, w, h, 0, 0, paddedWidth, NULL);
116
117    pExaPixmap->area = NULL;
118
119    exaSetAccelBlock(pExaScr, pExaPixmap, w, h, bpp);
120
121    pExaPixmap->use_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
122
123    /* During a fallback we must prepare access. */
124    if (pExaScr->fallback_counter)
125        exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_AUX_DEST);
126
127    return pPixmap;
128}
129
130Bool
131exaModifyPixmapHeader_driver(PixmapPtr pPixmap, int width, int height,
132                             int depth, int bitsPerPixel, int devKind,
133                             void *pPixData)
134{
135    ScreenPtr pScreen;
136    ExaScreenPrivPtr pExaScr;
137    ExaPixmapPrivPtr pExaPixmap;
138    Bool ret;
139
140    if (!pPixmap)
141        return FALSE;
142
143    pScreen = pPixmap->drawable.pScreen;
144    pExaScr = ExaGetScreenPriv(pScreen);
145    pExaPixmap = ExaGetPixmapPriv(pPixmap);
146
147    if (pExaPixmap) {
148        if (pPixData)
149            pExaPixmap->sys_ptr = pPixData;
150
151        if (devKind > 0)
152            pExaPixmap->sys_pitch = devKind;
153
154        if (width > 0 && height > 0 && bitsPerPixel > 0) {
155            exaSetFbPitch(pExaScr, pExaPixmap, width, height, bitsPerPixel);
156
157            exaSetAccelBlock(pExaScr, pExaPixmap, width, height, bitsPerPixel);
158        }
159    }
160
161    if (pExaScr->info->ModifyPixmapHeader) {
162        ret = pExaScr->info->ModifyPixmapHeader(pPixmap, width, height, depth,
163                                                bitsPerPixel, devKind,
164                                                pPixData);
165        /* For EXA_HANDLES_PIXMAPS, we set pPixData to NULL.
166         * If pPixmap->devPrivate.ptr is non-NULL, then we've got a
167         * !has_gpu_copy pixmap. We need to store the pointer,
168         * because PrepareAccess won't be called.
169         */
170        if (!pPixData && pPixmap->devPrivate.ptr && pPixmap->devKind) {
171            pExaPixmap->sys_ptr = pPixmap->devPrivate.ptr;
172            pExaPixmap->sys_pitch = pPixmap->devKind;
173        }
174        if (ret == TRUE)
175            goto out;
176    }
177
178    swap(pExaScr, pScreen, ModifyPixmapHeader);
179    ret = pScreen->ModifyPixmapHeader(pPixmap, width, height, depth,
180                                      bitsPerPixel, devKind, pPixData);
181    swap(pExaScr, pScreen, ModifyPixmapHeader);
182
183 out:
184    /* Always NULL this, we don't want lingering pointers. */
185    pPixmap->devPrivate.ptr = NULL;
186
187    return ret;
188}
189
190Bool
191exaDestroyPixmap_driver(PixmapPtr pPixmap)
192{
193    ScreenPtr pScreen = pPixmap->drawable.pScreen;
194
195    ExaScreenPriv(pScreen);
196    Bool ret;
197
198    if (pPixmap->refcnt == 1) {
199        ExaPixmapPriv(pPixmap);
200
201        exaDestroyPixmap(pPixmap);
202
203        if (pExaPixmap->driverPriv)
204            pExaScr->info->DestroyPixmap(pScreen, pExaPixmap->driverPriv);
205        pExaPixmap->driverPriv = NULL;
206    }
207
208    swap(pExaScr, pScreen, DestroyPixmap);
209    ret = pScreen->DestroyPixmap(pPixmap);
210    swap(pExaScr, pScreen, DestroyPixmap);
211
212    return ret;
213}
214
215Bool
216exaPixmapHasGpuCopy_driver(PixmapPtr pPixmap)
217{
218    ScreenPtr pScreen = pPixmap->drawable.pScreen;
219
220    ExaScreenPriv(pScreen);
221    void *saved_ptr;
222    Bool ret;
223
224    saved_ptr = pPixmap->devPrivate.ptr;
225    pPixmap->devPrivate.ptr = ExaGetPixmapAddress(pPixmap);
226    ret = pExaScr->info->PixmapIsOffscreen(pPixmap);
227    pPixmap->devPrivate.ptr = saved_ptr;
228
229    return ret;
230}
231