added license GPL

[winnie] / src / fbdev / gfx.cc

diff --git a/src/fbdev/gfx.cc b/src/fbdev/gfx.cc
index 74dec0c..1421348 100644 (file)
--- a/src/fbdev/gfx.cc
+++ b/src/fbdev/gfx.cc
@@ -1,3 +1,24 @@
+/*
+winnie - an experimental window system
+
+Copyright (C) 2013 Eleni Maria Stea
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Author: Eleni Maria Stea <elene.mst@gmail.com>
+*/
+
 #ifdef WINNIE_FBDEV
 #include <errno.h>
 #include <limits.h>
@@ -20,6 +41,7 @@
 
 static unsigned char *framebuffer;
 static int dev_fd;
+static int rgb_order[3];
 
 struct Graphics {
        Rect screen_rect;
@@ -59,6 +81,10 @@ bool init_gfx()
        gfx->screen_rect.height = sinfo.yres_virtual;
        gfx->color_depth = sinfo.bits_per_pixel;
 
+       rgb_order[0] = sinfo.red.offset / 8;
+       rgb_order[1] = sinfo.green.offset / 8;
+       rgb_order[2] = sinfo.blue.offset / 8;
+
        set_clipping_rect(gfx->screen_rect);
 
        int sz = FRAMEBUFFER_SIZE(gfx->screen_rect.width, gfx->screen_rect.height, gfx->color_depth);
@@ -104,7 +130,7 @@ bool init_gfx()
 void destroy_gfx()
 {
        clear_screen(0, 0, 0);
-       gfx_update();
+       gfx_update(gfx->screen_rect);
 
        if(dev_fd != -1) {
                close(dev_fd);
@@ -161,9 +187,17 @@ void set_cursor_visibility(bool visible)
        }
 }
 
-void gfx_update()
+void gfx_update(const Rect &upd_rect)
 {
-       memcpy(framebuffer, gfx->pixmap->pixels, gfx->pixmap->width * gfx->pixmap->height * (gfx->color_depth / 8));
+       Rect rect = rect_intersection(upd_rect, gfx->screen_rect);
+       unsigned char *sptr = gfx->pixmap->pixels + (rect.y * gfx->screen_rect.width + rect.x) * 4;
+       unsigned char *dptr = framebuffer + (rect.y * gfx->screen_rect.width + rect.x) * 4;
+
+       for(int i=0; i<rect.height; i++) {
+               memcpy(dptr, sptr, rect.width * 4);
+               sptr += gfx->screen_rect.width * 4;
+               dptr += gfx->screen_rect.width * 4;
+       }
 }
 
 void wait_vsync()
@@ -174,4 +208,11 @@ void wait_vsync()
        }
 }
 
+void get_rgb_order(int *r, int *g, int *b)
+{
+       *r = rgb_order[0];
+       *g = rgb_order[1];
+       *b = rgb_order[2];
+}
+
 #endif // WINNIE_FBDEV