src/gallium/state_trackers/xorg/xorg_dri2.c

   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
  44 typedef struct {
  45     PixmapPtr pPixmap;
  46     struct pipe_texture *tex;
  47     struct pipe_buffer *buf;
  48     struct pipe_fence_handle *fence;
  49 } *BufferPrivatePtr;
  50
  51 static DRI2BufferPtr
  52 driCreateBuffers(DrawablePtr pDraw, unsigned int *attachments, int count)
  53 {
  54     struct pipe_texture *depth, *tex;
  55     struct pipe_buffer *buf;
  56     ScreenPtr pScreen = pDraw->pScreen;
  57     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
  58     modesettingPtr ms = modesettingPTR(pScrn);
  59     BufferPrivatePtr privates;
  60     DRI2BufferPtr buffers;
  61     PixmapPtr pPixmap;
  62     unsigned stride, handle;
  63     int i;
  64
  65     buffers = xcalloc(count, sizeof *buffers);
  66     if (!buffers)
  67         goto fail_buffers;
  68
  69     privates = xcalloc(count, sizeof *privates);
  70     if (!privates)
  71         goto fail_privates;
  72
  73     depth = NULL;
  74     for (i = 0; i < count; i++) {
  75         pPixmap = NULL;
  76         tex = NULL;
  77         buf = NULL;
  78         if (attachments[i] == DRI2BufferFrontLeft) {
  79             if (pDraw->type == DRAWABLE_PIXMAP)
  80                 pPixmap = (PixmapPtr) pDraw;
  81             else
  82                 pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr) pDraw);
  83             pPixmap->refcnt++;
  84             tex = xorg_exa_get_texture(pPixmap);
  85         } else if (attachments[i] == DRI2BufferStencil) {
  86             pipe_texture_reference(&tex, depth);
  87         } else if (attachments[i] == DRI2BufferDepth) {
  88             struct pipe_texture template;
  89             memset(&template, 0, sizeof(template));
  90             template.target = PIPE_TEXTURE_2D;
  91             template.format = PIPE_FORMAT_S8Z24_UNORM;
  92             pf_get_block(template.format, &template.block);
  93             template.width[0] = pDraw->width;
  94             template.height[0] = pDraw->height;
  95             template.depth[0] = 1;
  96             template.last_level = 0;
  97             template.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
  98             tex = ms->screen->texture_create(ms->screen, &template);
  99             depth = tex;
 100         } else {
 101             pPixmap = (*pScreen->CreatePixmap)(pScreen, pDraw->width,
 102                                                pDraw->height,
 103                                                pDraw->depth,
 104                                                0);
 105             tex = xorg_exa_get_texture(pPixmap);
 106         }
 107
 108         if (!tex)
 109                 FatalError("NO TEXTURE IN DRI2\n");
 110
 111         ms->api->buffer_from_texture(ms->api, tex, &buf, &stride);
 112         ms->api->global_handle_from_buffer(ms->api, ms->screen, buf, &handle);
 113
 114         buffers[i].name = handle;
 115         buffers[i].attachment = attachments[i];
 116         buffers[i].pitch = stride;
 117         buffers[i].cpp = 4;
 118         buffers[i].driverPrivate = &privates[i];
 119         buffers[i].flags = 0; /* not tiled */
 120         privates[i].pPixmap = pPixmap;
 121         privates[i].buf = buf;
 122         privates[i].tex = tex;
 123     }
 124
 125     return buffers;
 126
 127 fail_privates:
 128     xfree(buffers);
 129 fail_buffers:
 130     return NULL;
 131 }
 132
 133 static void
 134 driDestroyBuffers(DrawablePtr pDraw, DRI2BufferPtr buffers, int count)
 135 {
 136     ScreenPtr pScreen = pDraw->pScreen;
 137     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 138     modesettingPtr ms = modesettingPTR(pScrn);
 139     BufferPrivatePtr private;
 140     int i;
 141     (void)ms;
 142
 143     for (i = 0; i < count; i++) {
 144         private = buffers[i].driverPrivate;
 145
 146         pipe_texture_reference(&private->tex, NULL);
 147         pipe_buffer_reference(&private->buf, NULL);
 148         ms->screen->fence_reference(ms->screen, &private->fence, NULL);
 149
 150         if (private->pPixmap)
 151             (*pScreen->DestroyPixmap)(private->pPixmap);
 152     }
 153
 154     if (buffers) {
 155         xfree(buffers[0].driverPrivate);
 156         xfree(buffers);
 157     }
 158 }
 159
 160 static void
 161 driCopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
 162               DRI2BufferPtr pDestBuffer, DRI2BufferPtr pSrcBuffer)
 163 {
 164     ScreenPtr pScreen = pDraw->pScreen;
 165     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 166     modesettingPtr ms = modesettingPTR(pScrn);
 167     BufferPrivatePtr dst_priv = pDestBuffer->driverPrivate;
 168     BufferPrivatePtr src_priv = pSrcBuffer->driverPrivate;
 169     PixmapPtr src_pixmap;
 170     PixmapPtr dst_pixmap;
 171     GCPtr gc;
 172     RegionPtr copy_clip;
 173
 174     src_pixmap = src_priv->pPixmap;
 175     dst_pixmap = dst_priv->pPixmap;
 176     if (pSrcBuffer->attachment == DRI2BufferFrontLeft)
 177         src_pixmap = (PixmapPtr)pDraw;
 178     if (pDestBuffer->attachment == DRI2BufferFrontLeft)
 179         dst_pixmap = (PixmapPtr)pDraw;
 180     gc = GetScratchGC(pDraw->depth, pScreen);
 181     copy_clip = REGION_CREATE(pScreen, NULL, 0);
 182     REGION_COPY(pScreen, copy_clip, pRegion);
 183     (*gc->funcs->ChangeClip) (gc, CT_REGION, copy_clip, 0);
 184     ValidateGC(&dst_pixmap->drawable, gc);
 185
 186     /* If this is a full buffer swap, throttle on the previous one */
 187     if (dst_priv->fence && REGION_NUM_RECTS(pRegion) == 1) {
 188         BoxPtr extents = REGION_EXTENTS(pScreen, pRegion);
 189
 190         if (extents->x1 == 0 && extents->y1 == 0 &&
 191             extents->x2 == pDraw->width && extents->y2 == pDraw->height) {
 192             ms->screen->fence_finish(ms->screen, dst_priv->fence, 0);
 193             ms->screen->fence_reference(ms->screen, &dst_priv->fence, NULL);
 194         }
 195     }
 196
 197     (*gc->ops->CopyArea)(&src_pixmap->drawable, &dst_pixmap->drawable, gc,
 198                          0, 0, pDraw->width, pDraw->height, 0, 0);
 199
 200     FreeScratchGC(gc);
 201
 202     ms->ctx->flush(ms->ctx, PIPE_FLUSH_SWAPBUFFERS,
 203                    pDestBuffer->attachment == DRI2BufferFrontLeft ?
 204                    &dst_priv->fence : NULL);
 205 }
 206
 207 Bool
 208 driScreenInit(ScreenPtr pScreen)
 209 {
 210     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 211     modesettingPtr ms = modesettingPTR(pScrn);
 212     DRI2InfoRec dri2info;
 213
 214     dri2info.version = 1;
 215     dri2info.fd = ms->fd;
 216 #if 0
 217     dri2info.driverName = pScrn->name;
 218 #else
 219     dri2info.driverName = "i915"; /* FIXME */
 220 #endif
 221     dri2info.deviceName = "/dev/dri/card0"; /* FIXME */
 222
 223     dri2info.CreateBuffers = driCreateBuffers;
 224     dri2info.DestroyBuffers = driDestroyBuffers;
 225     dri2info.CopyRegion = driCopyRegion;
 226
 227     return DRI2ScreenInit(pScreen, &dri2info);
 228 }
 229
 230 void
 231 driCloseScreen(ScreenPtr pScreen)
 232 {
 233     DRI2CloseScreen(pScreen);
 234 }
 235
 236 /* vim: set sw=4 ts=8 sts=4: */