xorg_dri2.c revision 3905119b4743eb5d284236cc237ee2c19ae3c5c8 
1/*
2 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 *
26 * Author: Alan Hourihane <alanh@tungstengraphics.com>
27 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
28 *
29 */
30
31#include "xorg-server.h"
32#include "xf86.h"
33#include "xf86_OSproc.h"
34
35#include "xorg_tracker.h"
36
37#include "dri2.h"
38
39#include "pipe/p_state.h"
40#include "pipe/p_inlines.h"
41
42#include "util/u_rect.h"
43
44typedef struct {
45    PixmapPtr pPixmap;
46    struct pipe_texture *tex;
47    struct pipe_buffer *buf;
48} *BufferPrivatePtr;
49
50static DRI2BufferPtr
51driCreateBuffers(DrawablePtr pDraw, unsigned int *attachments, int count)
52{
53    struct pipe_texture *depth, *tex;
54    struct pipe_buffer *buf;
55    ScreenPtr pScreen = pDraw->pScreen;
56    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
57    modesettingPtr ms = modesettingPTR(pScrn);
58    BufferPrivatePtr privates;
59    DRI2BufferPtr buffers;
60    PixmapPtr pPixmap;
61    unsigned stride, handle;
62    int i;
63
64    buffers = xcalloc(count, sizeof *buffers);
65    if (!buffers)
66	goto fail_buffers;
67
68    privates = xcalloc(count, sizeof *privates);
69    if (!privates)
70	goto fail_privates;
71
72    depth = NULL;
73    for (i = 0; i < count; i++) {
74	pPixmap = NULL;
75	tex = NULL;
76	buf = NULL;
77	if (attachments[i] == DRI2BufferFrontLeft) {
78	    if (pDraw->type == DRAWABLE_PIXMAP)
79		pPixmap = (PixmapPtr) pDraw;
80	    else
81		pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr) pDraw);
82	    pPixmap->refcnt++;
83	    tex = xorg_exa_get_texture(pPixmap);
84	} else if (attachments[i] == DRI2BufferStencil) {
85	    pipe_texture_reference(&tex, depth);
86	} else if (attachments[i] == DRI2BufferDepth) {
87	    struct pipe_texture template;
88	    memset(&template, 0, sizeof(template));
89	    template.target = PIPE_TEXTURE_2D;
90	    template.format = PIPE_FORMAT_S8Z24_UNORM;
91	    pf_get_block(template.format, &template.block);
92	    template.width[0] = pDraw->width;
93	    template.height[0] = pDraw->height;
94	    template.depth[0] = 1;
95	    template.last_level = 0;
96	    template.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
97	    tex = ms->screen->texture_create(ms->screen, &template);
98	    depth = tex;
99	} else {
100	    struct pipe_texture template;
101	    memset(&template, 0, sizeof(template));
102	    template.target = PIPE_TEXTURE_2D;
103	    template.format = PIPE_FORMAT_A8R8G8B8_UNORM;
104	    pf_get_block(template.format, &template.block);
105	    template.width[0] = pDraw->width;
106	    template.height[0] = pDraw->height;
107	    template.depth[0] = 1;
108	    template.last_level = 0;
109	    template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
110	    tex = ms->screen->texture_create(ms->screen, &template);
111	}
112
113	if (!tex)
114		FatalError("NO TEXTURE IN DRI2\n");
115
116	ms->api->buffer_from_texture(ms->api, tex, &buf, &stride);
117	ms->api->global_handle_from_buffer(ms->api, ms->screen, buf, &handle);
118
119	buffers[i].name = handle;
120	buffers[i].attachment = attachments[i];
121	buffers[i].pitch = stride;
122	buffers[i].cpp = 4;
123	buffers[i].driverPrivate = &privates[i];
124	buffers[i].flags = 0; /* not tiled */
125	privates[i].pPixmap = pPixmap;
126	privates[i].buf = buf;
127	privates[i].tex = tex;
128    }
129
130    return buffers;
131
132fail_privates:
133    xfree(buffers);
134fail_buffers:
135    return NULL;
136}
137
138static void
139driDestroyBuffers(DrawablePtr pDraw, DRI2BufferPtr buffers, int count)
140{
141    ScreenPtr pScreen = pDraw->pScreen;
142    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
143    modesettingPtr ms = modesettingPTR(pScrn);
144    BufferPrivatePtr private;
145    int i;
146    (void)ms;
147
148    for (i = 0; i < count; i++) {
149	private = buffers[i].driverPrivate;
150
151	if (private->pPixmap)
152	    (*pScreen->DestroyPixmap)(private->pPixmap);
153
154	pipe_texture_reference(&private->tex, NULL);
155	pipe_buffer_reference(&private->buf, NULL);
156    }
157
158    if (buffers) {
159	xfree(buffers[0].driverPrivate);
160	xfree(buffers);
161    }
162}
163
164static void
165driCopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
166              DRI2BufferPtr pDestBuffer, DRI2BufferPtr pSrcBuffer)
167{
168    ScreenPtr pScreen = pDraw->pScreen;
169    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
170    modesettingPtr ms = modesettingPTR(pScrn);
171    BufferPrivatePtr dst_priv = pDestBuffer->driverPrivate;
172    BufferPrivatePtr src_priv = pSrcBuffer->driverPrivate;
173
174    struct pipe_surface *dst_surf =
175	ms->screen->get_tex_surface(ms->screen, dst_priv->tex, 0, 0, 0,
176				    PIPE_BUFFER_USAGE_GPU_WRITE);
177    struct pipe_surface *src_surf =
178	ms->screen->get_tex_surface(ms->screen, src_priv->tex, 0, 0, 0,
179				    PIPE_BUFFER_USAGE_GPU_READ);
180
181#if 0
182    ms->ctx->surface_copy(ms->ctx, dst_surf, 0, 0, src_surf,
183			  0, 0, pDraw->width, pDraw->height);
184#else
185    util_surface_copy(ms->ctx, false, dst_surf, 0, 0, src_surf,
186		      0, 0, pDraw->width, pDraw->height);
187#endif
188
189    pipe_surface_reference(&dst_surf, NULL);
190    pipe_surface_reference(&src_surf, NULL);
191}
192
193Bool
194driScreenInit(ScreenPtr pScreen)
195{
196    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
197    modesettingPtr ms = modesettingPTR(pScrn);
198    DRI2InfoRec dri2info;
199
200    dri2info.version = 1;
201    dri2info.fd = ms->fd;
202#if 0
203    dri2info.driverName = pScrn->name;
204#else
205    dri2info.driverName = "i915"; /* FIXME */
206#endif
207    dri2info.deviceName = "/dev/dri/card0"; /* FIXME */
208
209    dri2info.CreateBuffers = driCreateBuffers;
210    dri2info.DestroyBuffers = driDestroyBuffers;
211    dri2info.CopyRegion = driCopyRegion;
212
213    return DRI2ScreenInit(pScreen, &dri2info);
214}
215
216void
217driCloseScreen(ScreenPtr pScreen)
218{
219    DRI2CloseScreen(pScreen);
220}
221
222/* vim: set sw=4 ts=8 sts=4: */
223