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 typedef struct {
  43     PixmapPtr pPixmap;
  44     struct pipe_texture *tex;
  45     struct pipe_buffer *buf;
  46 } *BufferPrivatePtr;
  47
  48 static DRI2BufferPtr
  49 driCreateBuffers(DrawablePtr pDraw, unsigned int *attachments, int count)
  50 {
  51     struct pipe_texture *depth, *tex;
  52     struct pipe_buffer *buf;
  53     ScreenPtr pScreen = pDraw->pScreen;
  54     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
  55     modesettingPtr ms = modesettingPTR(pScrn);
  56     BufferPrivatePtr privates;
  57     DRI2BufferPtr buffers;
  58     PixmapPtr pPixmap;
  59     unsigned stride, handle;
  60     int i;
  61
  62     buffers = xcalloc(count, sizeof *buffers);
  63     if (!buffers)
  64         goto fail_buffers;
  65
  66     privates = xcalloc(count, sizeof *privates);
  67     if (!privates)
  68         goto fail_privates;
  69
  70     depth = NULL;
  71     for (i = 0; i < count; i++) {
  72         pPixmap = NULL;
  73         tex = NULL;
  74         buf = NULL;
  75         if (attachments[i] == DRI2BufferFrontLeft) {
  76             if (pDraw->type == DRAWABLE_PIXMAP)
  77                 pPixmap = (PixmapPtr) pDraw;
  78             else
  79                 pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr) pDraw);
  80             pPixmap->refcnt++;
  81             tex = xorg_exa_get_texture(pPixmap);
  82         } else if (attachments[i] == DRI2BufferStencil) {
  83             pipe_texture_reference(&tex, depth);
  84         } else if (attachments[i] == DRI2BufferDepth) {
  85             struct pipe_texture template;
  86
  87             memset(&template, 0, sizeof(template));
  88             template.target = PIPE_TEXTURE_2D;
  89             template.format = PIPE_FORMAT_S8Z24_UNORM;
  90             pf_get_block(template.format, &template.block);
  91             template.width[0] = pDraw->width;
  92             template.height[0] = pDraw->height;
  93             template.depth[0] = 1;
  94             template.last_level = 0;
  95             template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
  96             tex = ms->screen->texture_create(ms->screen, &template);
  97         } else {
  98             struct pipe_texture template;
  99             memset(&template, 0, sizeof(template));
 100             template.target = PIPE_TEXTURE_2D;
 101             template.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 102             pf_get_block(template.format, &template.block);
 103             template.width[0] = pDraw->width;
 104             template.height[0] = pDraw->height;
 105             template.depth[0] = 1;
 106             template.last_level = 0;
 107             template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
 108             tex = ms->screen->texture_create(ms->screen, &template);
 109         }
 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
 142     for (i = 0; i < count; i++) {
 143         private = buffers[i].driverPrivate;
 144
 145         if (private->pPixmap)
 146             (*pScreen->DestroyPixmap)(private->pPixmap);
 147
 148         pipe_texture_reference(&private->tex, NULL);
 149         pipe_buffer_reference(&private->buf, NULL);
 150     }
 151
 152     if (buffers) {
 153         xfree(buffers[0].driverPrivate);
 154         xfree(buffers);
 155     }
 156 }
 157
 158 static void
 159 driCopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
 160               DRI2BufferPtr pDestBuffer, DRI2BufferPtr pSrcBuffer)
 161 {
 162     ScreenPtr pScreen = pDraw->pScreen;
 163     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 164     modesettingPtr ms = modesettingPTR(pScrn);
 165     BufferPrivatePtr dst_priv = pDestBuffer->driverPrivate;
 166     BufferPrivatePtr src_priv = pSrcBuffer->driverPrivate;
 167
 168     struct pipe_surface *dst_surf =
 169         ms->screen->get_tex_surface(ms->screen, dst_priv->tex, 0, 0, 0,
 170                                     PIPE_BUFFER_USAGE_GPU_WRITE);
 171     struct pipe_surface *src_surf =
 172         ms->screen->get_tex_surface(ms->screen, src_priv->tex, 0, 0, 0,
 173                                     PIPE_BUFFER_USAGE_GPU_READ);
 174
 175     ms->ctx->surface_copy(ms->ctx, dst_surf, 0, 0, src_surf,
 176                           0, 0, pDraw->width, pDraw->height);
 177
 178     pipe_surface_reference(&dst_surf, NULL);
 179     pipe_surface_reference(&src_surf, NULL);
 180 }
 181
 182 Bool
 183 driScreenInit(ScreenPtr pScreen)
 184 {
 185     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 186     modesettingPtr ms = modesettingPTR(pScrn);
 187     DRI2InfoRec dri2info;
 188
 189     dri2info.version = 1;
 190     dri2info.fd = ms->fd;
 191 #if 0
 192     dri2info.driverName = pScrn->name;
 193 #else
 194     dri2info.driverName = "i915"; /* FIXME */
 195 #endif
 196     dri2info.deviceName = "/dev/dri/card0"; /* FIXME */
 197
 198     dri2info.CreateBuffers = driCreateBuffers;
 199     dri2info.DestroyBuffers = driDestroyBuffers;
 200     dri2info.CopyRegion = driCopyRegion;
 201
 202     return DRI2ScreenInit(pScreen, &dri2info);
 203 }
 204
 205 void
 206 driCloseScreen(ScreenPtr pScreen)
 207 {
 208     DRI2CloseScreen(pScreen);
 209 }
 210
 211 /* vim: set sw=4 ts=8 sts=4: */