summaryrefslogtreecommitdiff
path: root/exa/exa_classic.c
blob: 1eff570918ee6ed2d1ffdf04dc4bcb3bee4c0af0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
/*
 * Copyright  2009 Maarten Maathuis
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <string.h>

#include "exa_priv.h"
#include "exa.h"

/* This file holds the classic exa specific implementation. */

static _X_INLINE void*
ExaGetPixmapAddress(PixmapPtr p)
{
    ExaPixmapPriv(p);

    if (pExaPixmap->offscreen && pExaPixmap->fb_ptr)
	return pExaPixmap->fb_ptr;
    else
	return pExaPixmap->sys_ptr;
}

/**
 * exaCreatePixmap() creates a new pixmap.
 *
 * If width and height are 0, this won't be a full-fledged pixmap and it will
 * get ModifyPixmapHeader() called on it later.  So, we mark it as pinned, because
 * ModifyPixmapHeader() would break migration.  These types of pixmaps are used
 * for scratch pixmaps, or to represent the visible screen.
 */
PixmapPtr
exaCreatePixmap_classic(ScreenPtr pScreen, int w, int h, int depth,
		unsigned usage_hint)
{
    PixmapPtr pPixmap;
    ExaPixmapPrivPtr	pExaPixmap;
    BoxRec box;
    int bpp;
    ExaScreenPriv(pScreen);

    if (w > 32767 || h > 32767)
	return NullPixmap;

    swap(pExaScr, pScreen, CreatePixmap);
    pPixmap = pScreen->CreatePixmap (pScreen, w, h, depth, usage_hint);
    swap(pExaScr, pScreen, CreatePixmap);

    if (!pPixmap)
        return NULL;

    pExaPixmap = ExaGetPixmapPriv(pPixmap);
    pExaPixmap->driverPriv = NULL;

    bpp = pPixmap->drawable.bitsPerPixel;

    pExaPixmap->driverPriv = NULL;
    /* Scratch pixmaps may have w/h equal to zero, and may not be
     * migrated.
     */
    if (!w || !h)
	pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
    else
	pExaPixmap->score = EXA_PIXMAP_SCORE_INIT;

    pExaPixmap->sys_ptr = pPixmap->devPrivate.ptr;
    pExaPixmap->sys_pitch = pPixmap->devKind;

    pPixmap->devPrivate.ptr = NULL;
    pExaPixmap->offscreen = FALSE;

    pExaPixmap->fb_ptr = NULL;
    exaSetFbPitch(pExaScr, pExaPixmap, w, h, bpp);
    pExaPixmap->fb_size = pExaPixmap->fb_pitch * h;

    if (pExaPixmap->fb_pitch > 131071) {
	swap(pExaScr, pScreen, DestroyPixmap);
	pScreen->DestroyPixmap (pPixmap);
	swap(pExaScr, pScreen, DestroyPixmap);
	return NULL;
    }

    /* Set up damage tracking */
    pExaPixmap->pDamage = DamageCreate (NULL, NULL,
					DamageReportNone, TRUE,
					pScreen, pPixmap);

    if (pExaPixmap->pDamage == NULL) {
	swap(pExaScr, pScreen, DestroyPixmap);
	pScreen->DestroyPixmap (pPixmap);
	swap(pExaScr, pScreen, DestroyPixmap);
	return NULL;
    }

    DamageRegister (&pPixmap->drawable, pExaPixmap->pDamage);
    /* This ensures that pending damage reflects the current operation. */
    /* This is used by exa to optimize migration. */
    DamageSetReportAfterOp (pExaPixmap->pDamage, TRUE);

    pExaPixmap->area = NULL;

    /* We set the initial pixmap as completely valid for a simple reason.
     * Imagine a 1000x1000 pixmap, it has 1 million pixels, 250000 of which
     * could form single pixel rects as part of a region. Setting the complete region
     * as valid is a natural defragmentation of the region.
     */
    box.x1 = 0;
    box.y1 = 0;
    box.x2 = w;
    box.y2 = h;
    REGION_INIT(pScreen, &pExaPixmap->validSys, &box, 0);
    REGION_INIT(pScreen, &pExaPixmap->validFB, &box, 0);

    exaSetAccelBlock(pExaScr, pExaPixmap,
                     w, h, bpp);

    return pPixmap;
}

Bool
exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height, int depth,
		      int bitsPerPixel, int devKind, pointer pPixData)
{
    ScreenPtr pScreen = pPixmap->drawable.pScreen;
    ExaScreenPrivPtr pExaScr;
    ExaPixmapPrivPtr pExaPixmap;
    Bool ret;

    if (!pPixmap)
        return FALSE;

    pExaScr = ExaGetScreenPriv(pScreen);
    pExaPixmap = ExaGetPixmapPriv(pPixmap);

    if (pExaPixmap) {
        if (pPixData)
            pExaPixmap->sys_ptr = pPixData;

        if (devKind > 0)
            pExaPixmap->sys_pitch = devKind;

	/* Classic EXA:
	 * - Framebuffer.
	 * - Scratch pixmap with offscreen memory.
	 */
	if (pExaScr->info->memoryBase && pPixData) {
	    if ((CARD8 *)pPixData >= pExaScr->info->memoryBase &&
		((CARD8 *)pPixData - pExaScr->info->memoryBase) <
				pExaScr->info->memorySize) {
		pExaPixmap->fb_ptr = pPixData;
		pExaPixmap->fb_pitch = devKind;
		pExaPixmap->offscreen = TRUE;
	    }
	}

        if (width > 0 && height > 0 && bitsPerPixel > 0) {
            exaSetFbPitch(pExaScr, pExaPixmap,
                          width, height, bitsPerPixel);

            exaSetAccelBlock(pExaScr, pExaPixmap,
                             width, height, bitsPerPixel);
        }

	/* Pixmaps subject to ModifyPixmapHeader will be pinned to system or
	 * offscreen memory, so there's no need to track damage.
	 */
	if (pExaPixmap->pDamage) {
	    DamageUnregister(&pPixmap->drawable, pExaPixmap->pDamage);
	    DamageDestroy(pExaPixmap->pDamage);
	    pExaPixmap->pDamage = NULL;
	}
    }

    swap(pExaScr, pScreen, ModifyPixmapHeader);
    ret = pScreen->ModifyPixmapHeader(pPixmap, width, height, depth,
					    bitsPerPixel, devKind, pPixData);
    swap(pExaScr, pScreen, ModifyPixmapHeader);

    /* Always NULL this, we don't want lingering pointers. */
    pPixmap->devPrivate.ptr = NULL;

    return ret;
}

Bool
exaDestroyPixmap_classic (PixmapPtr pPixmap)
{
    ScreenPtr	pScreen = pPixmap->drawable.pScreen;
    ExaScreenPriv(pScreen);
    Bool ret;

    if (pPixmap->refcnt == 1)
    {
	ExaPixmapPriv (pPixmap);

	if (pExaPixmap->area)
	{
	    DBG_PIXMAP(("-- 0x%p (0x%x) (%dx%d)\n",
                        (void*)pPixmap->drawable.id,
			 ExaGetPixmapPriv(pPixmap)->area->offset,
			 pPixmap->drawable.width,
			 pPixmap->drawable.height));
	    /* Free the offscreen area */
	    exaOffscreenFree (pPixmap->drawable.pScreen, pExaPixmap->area);
	    pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
	    pPixmap->devKind = pExaPixmap->sys_pitch;
	}
	REGION_UNINIT(pPixmap->drawable.pScreen, &pExaPixmap->validSys);
	REGION_UNINIT(pPixmap->drawable.pScreen, &pExaPixmap->validFB);
    }

    swap(pExaScr, pScreen, DestroyPixmap);
    ret = pScreen->DestroyPixmap (pPixmap);
    swap(pExaScr, pScreen, DestroyPixmap);

    return ret;
}

Bool
exaPixmapIsOffscreen_classic(PixmapPtr pPixmap)
{
    ScreenPtr pScreen = pPixmap->drawable.pScreen;
    ExaScreenPriv(pScreen);
    ExaPixmapPriv(pPixmap);
    Bool ret;

    if (pExaScr->info->PixmapIsOffscreen) {
	pPixmap->devPrivate.ptr = ExaGetPixmapAddress(pPixmap);
	ret = pExaScr->info->PixmapIsOffscreen(pPixmap);
	pPixmap->devPrivate.ptr = NULL;
    } else
	ret = (pExaPixmap->offscreen && pExaPixmap->fb_ptr);

    return ret;
}