glamor/glamor_pixmap.c

   1 /*
   2  * Copyright © 2001 Keith Packard
   3  * Copyright © 2008 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Eric Anholt <eric@anholt.net>
  26  *    Zhigang Gong <zhigang.gong@linux.intel.com>
  27  *
  28  */
  29
  30 #include <stdlib.h>
  31
  32 #include "glamor_priv.h"
  33 /**
  34  * Sets the offsets to add to coordinates to make them address the same bits in
  35  * the backing drawable. These coordinates are nonzero only for redirected
  36  * windows.
  37  */
  38 void
  39 glamor_get_drawable_deltas(DrawablePtr drawable, PixmapPtr pixmap,
  40                            int *x, int *y)
  41 {
  42 #if defined(COMPOSITE) || defined(ROOTLESS)
  43     if (drawable->type == DRAWABLE_WINDOW) {
  44         *x = -pixmap->screen_x;
  45         *y = -pixmap->screen_y;
  46         return;
  47     }
  48 #endif
  49
  50     *x = 0;
  51     *y = 0;
  52 }
  53
  54 void
  55 glamor_pixmap_init(ScreenPtr screen)
  56 {
  57
  58 }
  59
  60 void
  61 glamor_pixmap_fini(ScreenPtr screen)
  62 {
  63 }
  64
  65 void
  66 glamor_set_destination_pixmap_fbo(glamor_screen_private *glamor_priv,
  67                                   glamor_pixmap_fbo *fbo, int x0, int y0,
  68                                   int width, int height)
  69 {
  70     glamor_make_current(glamor_priv);
  71
  72     glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
  73     glViewport(x0, y0, width, height);
  74 }
  75
  76 void
  77 glamor_set_destination_pixmap_priv_nc(glamor_screen_private *glamor_priv,
  78                                       PixmapPtr pixmap,
  79                                       glamor_pixmap_private *pixmap_priv)
  80 {
  81     int w, h;
  82
  83     PIXMAP_PRIV_GET_ACTUAL_SIZE(pixmap, pixmap_priv, w, h);
  84     glamor_set_destination_pixmap_fbo(glamor_priv, pixmap_priv->fbo, 0, 0, w, h);
  85 }
  86
  87 int
  88 glamor_set_destination_pixmap_priv(glamor_screen_private *glamor_priv,
  89                                    PixmapPtr pixmap,
  90                                    glamor_pixmap_private *pixmap_priv)
  91 {
  92     if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
  93         return -1;
  94
  95     glamor_set_destination_pixmap_priv_nc(glamor_priv, pixmap, pixmap_priv);
  96     return 0;
  97 }
  98
  99 int
 100 glamor_set_destination_pixmap(PixmapPtr pixmap)
 101 {
 102     int err;
 103     glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
 104     ScreenPtr screen = pixmap->drawable.pScreen;
 105     glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
 106
 107     err = glamor_set_destination_pixmap_priv(glamor_priv, pixmap, pixmap_priv);
 108     return err;
 109 }
 110
 111 Bool
 112 glamor_set_planemask(int depth, unsigned long planemask)
 113 {
 114     if (glamor_pm_is_solid(depth, planemask)) {
 115         return GL_TRUE;
 116     }
 117
 118     glamor_fallback("unsupported planemask %lx\n", planemask);
 119     return GL_FALSE;
 120 }
 121
 122 Bool
 123 glamor_set_alu(DrawablePtr drawable, unsigned char alu)
 124 {
 125     ScreenPtr screen = drawable->pScreen;
 126     glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
 127
 128     if (glamor_priv->is_gles) {
 129         if (alu != GXcopy)
 130             return FALSE;
 131         else
 132             return TRUE;
 133     }
 134
 135     if (alu == GXcopy) {
 136         glDisable(GL_COLOR_LOGIC_OP);
 137         return TRUE;
 138     }
 139
 140     switch (alu) {
 141     case GXnoop:
 142     case GXor:
 143     case GXset:
 144         /* These leave the alpha channel at 1.0 */
 145         break;
 146     default:
 147         if (glamor_drawable_effective_depth(drawable) == 24 &&
 148             glamor_get_drawable_pixmap(drawable)->drawable.depth == 32) {
 149             glamor_fallback("ALU %x not supported with mixed depth\n", alu);
 150             return FALSE;
 151         }
 152     }
 153
 154     glEnable(GL_COLOR_LOGIC_OP);
 155     switch (alu) {
 156     case GXclear:
 157         glLogicOp(GL_CLEAR);
 158         break;
 159     case GXand:
 160         glLogicOp(GL_AND);
 161         break;
 162     case GXandReverse:
 163         glLogicOp(GL_AND_REVERSE);
 164         break;
 165     case GXandInverted:
 166         glLogicOp(GL_AND_INVERTED);
 167         break;
 168     case GXnoop:
 169         glLogicOp(GL_NOOP);
 170         break;
 171     case GXxor:
 172         glLogicOp(GL_XOR);
 173         break;
 174     case GXor:
 175         glLogicOp(GL_OR);
 176         break;
 177     case GXnor:
 178         glLogicOp(GL_NOR);
 179         break;
 180     case GXequiv:
 181         glLogicOp(GL_EQUIV);
 182         break;
 183     case GXinvert:
 184         glLogicOp(GL_INVERT);
 185         break;
 186     case GXorReverse:
 187         glLogicOp(GL_OR_REVERSE);
 188         break;
 189     case GXcopyInverted:
 190         glLogicOp(GL_COPY_INVERTED);
 191         break;
 192     case GXorInverted:
 193         glLogicOp(GL_OR_INVERTED);
 194         break;
 195     case GXnand:
 196         glLogicOp(GL_NAND);
 197         break;
 198     case GXset:
 199         glLogicOp(GL_SET);
 200         break;
 201     default:
 202         glamor_fallback("unsupported alu %x\n", alu);
 203         return FALSE;
 204     }
 205
 206     return TRUE;
 207 }