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 "xf86.h"
  32 #include "xf86_OSproc.h"
  33
  34 #include "xorg_tracker.h"
  35
  36 #include "dri2.h"
  37
  38 #include "pipe/p_state.h"
  39 #include "pipe/p_inlines.h"
  40
  41 typedef struct {
  42     PixmapPtr pPixmap;
  43     struct pipe_texture *tex;
  44     struct pipe_buffer *buf;
  45 } *BufferPrivatePtr;
  46
  47 static DRI2BufferPtr
  48 driCreateBuffers(DrawablePtr pDraw, unsigned int *attachments, int count)
  49 {
  50     struct pipe_texture *depth, *tex;
  51     struct pipe_buffer *buf;
  52     ScreenPtr pScreen = pDraw->pScreen;
  53     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
  54     modesettingPtr ms = modesettingPTR(pScrn);
  55     BufferPrivatePtr privates;
  56     DRI2BufferPtr buffers;
  57     PixmapPtr pPixmap;
  58     unsigned stride, handle;
  59     int i;
  60
  61     buffers = xcalloc(count, sizeof *buffers);
  62     if (!buffers)
  63         goto fail_buffers;
  64
  65     privates = xcalloc(count, sizeof *privates);
  66     if (!privates)
  67         goto fail_privates;
  68
  69     depth = NULL;
  70     for (i = 0; i < count; i++) {
  71         pPixmap = NULL;
  72         tex = NULL;
  73         buf = NULL;
  74         if (attachments[i] == DRI2BufferFrontLeft) {
  75             if (pDraw->type == DRAWABLE_PIXMAP)
  76                 pPixmap = (PixmapPtr) pDraw;
  77             else
  78                 pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr) pDraw);
  79             pPixmap->refcnt++;
  80             tex = xorg_exa_get_texture(pPixmap);
  81         } else if (attachments[i] == DRI2BufferStencil) {
  82             pipe_texture_reference(&tex, depth);
  83         } else if (attachments[i] == DRI2BufferDepth) {
  84             struct pipe_texture template;
  85
  86             memset(&template, 0, sizeof(template));
  87             template.target = PIPE_TEXTURE_2D;
  88             template.compressed = 0;
  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.compressed = 0;
 102             template.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 103             pf_get_block(template.format, &template.block);
 104             template.width[0] = pDraw->width;
 105             template.height[0] = pDraw->height;
 106             template.depth[0] = 1;
 107             template.last_level = 0;
 108             template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
 109             tex = ms->screen->texture_create(ms->screen, &template);
 110         }
 111
 112         drm_api_hooks.buffer_from_texture(tex, &buf, &stride);
 113         drm_api_hooks.global_handle_from_buffer(ms->screen, buf, &handle);
 114
 115         buffers[i].name = handle;
 116         buffers[i].attachment = attachments[i];
 117         buffers[i].pitch = stride;
 118         buffers[i].cpp = 4;
 119         buffers[i].driverPrivate = &privates[i];
 120         buffers[i].flags = 0; /* not tiled */
 121         privates[i].pPixmap = pPixmap;
 122         privates[i].buf = buf;
 123         privates[i].tex = tex;
 124     }
 125
 126     return buffers;
 127
 128 fail_privates:
 129     xfree(buffers);
 130 fail_buffers:
 131     return NULL;
 132 }
 133
 134 static void
 135 driDestroyBuffers(DrawablePtr pDraw, DRI2BufferPtr buffers, int count)
 136 {
 137     ScreenPtr pScreen = pDraw->pScreen;
 138     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 139     modesettingPtr ms = modesettingPTR(pScrn);
 140     BufferPrivatePtr private;
 141     int i;
 142
 143     for (i = 0; i < count; i++) {
 144         private = buffers[i].driverPrivate;
 145
 146         if (private->pPixmap)
 147             (*pScreen->DestroyPixmap)(private->pPixmap);
 148
 149         pipe_texture_reference(&private->tex, NULL);
 150         pipe_buffer_reference(&private->buf, NULL);
 151     }
 152
 153     if (buffers) {
 154         xfree(buffers[0].driverPrivate);
 155         xfree(buffers);
 156     }
 157 }
 158
 159 static void
 160 driCopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
 161               DRI2BufferPtr pDestBuffer, DRI2BufferPtr pSrcBuffer)
 162 {
 163     ScreenPtr pScreen = pDraw->pScreen;
 164     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 165     modesettingPtr ms = modesettingPTR(pScrn);
 166     BufferPrivatePtr dst_priv = pDestBuffer->driverPrivate;
 167     BufferPrivatePtr src_priv = pSrcBuffer->driverPrivate;
 168
 169     struct pipe_surface *dst_surf =
 170         ms->screen->get_tex_surface(ms->screen, dst_priv->tex, 0, 0, 0,
 171                                     PIPE_BUFFER_USAGE_GPU_WRITE);
 172     struct pipe_surface *src_surf =
 173         ms->screen->get_tex_surface(ms->screen, src_priv->tex, 0, 0, 0,
 174                                     PIPE_BUFFER_USAGE_GPU_READ);
 175
 176     ms->ctx->surface_copy(ms->ctx, 0, dst_surf, 0, 0, src_surf,
 177                           0, 0, pDraw->width, pDraw->height);
 178
 179     pipe_surface_reference(&dst_surf, NULL);
 180     pipe_surface_reference(&src_surf, NULL);
 181 }
 182
 183 Bool
 184 driScreenInit(ScreenPtr pScreen)
 185 {
 186     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 187     modesettingPtr ms = modesettingPTR(pScrn);
 188     DRI2InfoRec dri2info;
 189
 190     dri2info.version = 1;
 191     dri2info.fd = ms->fd;
 192 #if 0
 193     dri2info.driverName = pScrn->name;
 194 #else
 195     dri2info.driverName = "i915"; /* FIXME */
 196 #endif
 197     dri2info.deviceName = "/dev/dri/card0"; /* FIXME */
 198
 199     dri2info.CreateBuffers = driCreateBuffers;
 200     dri2info.DestroyBuffers = driDestroyBuffers;
 201     dri2info.CopyRegion = driCopyRegion;
 202
 203     return DRI2ScreenInit(pScreen, &dri2info);
 204 }
 205
 206 void
 207 driCloseScreen(ScreenPtr pScreen)
 208 {
 209     DRI2CloseScreen(pScreen);
 210 }
 211
 212 /* vim: set sw=4 ts=8 sts=4: */