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 } *BufferPrivatePtr;
  49
  50 static DRI2BufferPtr
  51 driCreateBuffers(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
 132 fail_privates:
 133     xfree(buffers);
 134 fail_buffers:
 135     return NULL;
 136 }
 137
 138 static void
 139 driDestroyBuffers(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
 164 static void
 165 driCopyRegion(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 1
 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
 193 Bool
 194 driScreenInit(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
 216 void
 217 driCloseScreen(ScreenPtr pScreen)
 218 {
 219     DRI2CloseScreen(pScreen);
 220 }
 221
 222 /* vim: set sw=4 ts=8 sts=4: */