IABSD.fr/xenocara/xserver/glamor/glamor_pixmap.c

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• Author : matthieu
  Date : 2016-05-29 12:02:34
  Hash : e927c03e
  Message : Update to xserver 1.18.3. Tested by shadchin@ and naddy@. Note that indirect GLX is now disbled by default.

• xserver/glamor/glamor_pixmap.c

• /*
   * Copyright © 2001 Keith Packard
   * Copyright © 2008 Intel Corporation
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   *
   * Authors:
   *    Eric Anholt <eric@anholt.net>
   *    Zhigang Gong <zhigang.gong@linux.intel.com>
   *
   */
  
  #include <stdlib.h>
  
  #include "glamor_priv.h"
  /**
   * Sets the offsets to add to coordinates to make them address the same bits in
   * the backing drawable. These coordinates are nonzero only for redirected
   * windows.
   */
  void
  glamor_get_drawable_deltas(DrawablePtr drawable, PixmapPtr pixmap,
                             int *x, int *y)
  {
  #ifdef COMPOSITE
      if (drawable->type == DRAWABLE_WINDOW) {
          *x = -pixmap->screen_x;
          *y = -pixmap->screen_y;
          return;
      }
  #endif
  
      *x = 0;
      *y = 0;
  }
  
  void
  glamor_pixmap_init(ScreenPtr screen)
  {
  
  }
  
  void
  glamor_pixmap_fini(ScreenPtr screen)
  {
  }
  
  void
  glamor_set_destination_pixmap_fbo(glamor_screen_private *glamor_priv,
                                    glamor_pixmap_fbo *fbo, int x0, int y0,
                                    int width, int height)
  {
      glamor_make_current(glamor_priv);
  
      glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
      glViewport(x0, y0, width, height);
  }
  
  void
  glamor_set_destination_pixmap_priv_nc(glamor_screen_private *glamor_priv,
                                        PixmapPtr pixmap,
                                        glamor_pixmap_private *pixmap_priv)
  {
      int w, h;
  
      PIXMAP_PRIV_GET_ACTUAL_SIZE(pixmap, pixmap_priv, w, h);
      glamor_set_destination_pixmap_fbo(glamor_priv, pixmap_priv->fbo, 0, 0, w, h);
  }
  
  int
  glamor_set_destination_pixmap_priv(glamor_screen_private *glamor_priv,
                                     PixmapPtr pixmap,
                                     glamor_pixmap_private *pixmap_priv)
  {
      if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
          return -1;
  
      glamor_set_destination_pixmap_priv_nc(glamor_priv, pixmap, pixmap_priv);
      return 0;
  }
  
  int
  glamor_set_destination_pixmap(PixmapPtr pixmap)
  {
      int err;
      glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
      ScreenPtr screen = pixmap->drawable.pScreen;
      glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
  
      err = glamor_set_destination_pixmap_priv(glamor_priv, pixmap, pixmap_priv);
      return err;
  }
  
  Bool
  glamor_set_planemask(int depth, unsigned long planemask)
  {
      if (glamor_pm_is_solid(depth, planemask)) {
          return GL_TRUE;
      }
  
      glamor_fallback("unsupported planemask %lx\n", planemask);
      return GL_FALSE;
  }
  
  Bool
  glamor_set_alu(ScreenPtr screen, unsigned char alu)
  {
      glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
  
      if (glamor_priv->gl_flavor == GLAMOR_GL_ES2) {
          if (alu != GXcopy)
              return FALSE;
          else
              return TRUE;
      }
  
      if (alu == GXcopy) {
          glDisable(GL_COLOR_LOGIC_OP);
          return TRUE;
      }
      glEnable(GL_COLOR_LOGIC_OP);
      switch (alu) {
      case GXclear:
          glLogicOp(GL_CLEAR);
          break;
      case GXand:
          glLogicOp(GL_AND);
          break;
      case GXandReverse:
          glLogicOp(GL_AND_REVERSE);
          break;
      case GXandInverted:
          glLogicOp(GL_AND_INVERTED);
          break;
      case GXnoop:
          glLogicOp(GL_NOOP);
          break;
      case GXxor:
          glLogicOp(GL_XOR);
          break;
      case GXor:
          glLogicOp(GL_OR);
          break;
      case GXnor:
          glLogicOp(GL_NOR);
          break;
      case GXequiv:
          glLogicOp(GL_EQUIV);
          break;
      case GXinvert:
          glLogicOp(GL_INVERT);
          break;
      case GXorReverse:
          glLogicOp(GL_OR_REVERSE);
          break;
      case GXcopyInverted:
          glLogicOp(GL_COPY_INVERTED);
          break;
      case GXorInverted:
          glLogicOp(GL_OR_INVERTED);
          break;
      case GXnand:
          glLogicOp(GL_NAND);
          break;
      case GXset:
          glLogicOp(GL_SET);
          break;
      default:
          glamor_fallback("unsupported alu %x\n", alu);
          return FALSE;
      }
  
      return TRUE;
  }