//
// Contributed by Richard Kaszeta <bofh@me.umn.edu>, started October 1999.
//
-// 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 2 of the
-// License, or (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 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
+// This library 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.
+// Library General Public License for more details.
//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
//
// $Id$
#ifdef HAVE_CONFIG_H
-# include <config.h>
+# include <simgear_config.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <stdlib.h>
#include <limits.h>
-#include <GL/glut.h>
-#include <simgear/xgl.h>
+#include <GL/gl.h>
#include "screen-dump.hxx"
-#define RGB 3 // 3 bytes of color info per pixel
+#define RGB3 3 // 3 bytes of color info per pixel
#define RGBA 4 // 4 bytes of color+alpha info
-void my_glWritePPMFile(const char *filename, GLubyte *buffer, int win_width, int win_height, int mode)
+bool sg_glWritePPMFile(const char *filename, GLubyte *buffer, int win_width, int win_height, int mode)
{
int i, j, k, q;
unsigned char *ibuffer;
FILE *fp;
int pixelSize = mode==GL_RGBA?4:3;
- ibuffer = (unsigned char *) malloc(win_width*win_height*RGB);
+ ibuffer = (unsigned char *) malloc(win_width*win_height*RGB3);
+
+ if ( (fp = fopen(filename, "wb")) == NULL ) {
+ printf("Warning: cannot open %s\n", filename);
+ return false;
+ }
- fp = fopen(filename, "wb");
fprintf(fp, "P6\n# CREATOR: glReadPixel()\n%d %d\n%d\n",
win_width, win_height, UCHAR_MAX);
q = 0;
for (i = 0; i < win_height; i++)
for (j = 0; j < win_width; j++)
- for (k = 0; k < RGB; k++)
+ for (k = 0; k < RGB3; k++)
ibuffer[q++] = (unsigned char)
*(buffer + (pixelSize*((win_height-1-i)*win_width+j)+k));
- fwrite(ibuffer, sizeof(unsigned char), RGB*win_width*win_height, fp);
+ fwrite(ibuffer, sizeof(unsigned char), RGB3*win_width*win_height, fp);
fclose(fp);
free(ibuffer);
printf("wrote file (%d x %d pixels, %d bytes)\n",
- win_width, win_height, RGB*win_width*win_height);
+ win_width, win_height, RGB3*win_width*win_height);
+ return true;
}
// dump the screen buffer to a ppm file
-void my_glDumpWindow(const char *filename, int win_width, int win_height) {
+bool sg_glDumpWindow(const char *filename, int win_width, int win_height) {
GLubyte *buffer;
+ bool result;
buffer = (GLubyte *) malloc(win_width*win_height*RGBA);
glFinish();
glReadPixels(0, 0, win_width, win_height,
GL_RGBA, GL_UNSIGNED_BYTE, buffer);
- my_glWritePPMFile( filename, buffer, win_width, win_height, GL_RGBA );
+ result = sg_glWritePPMFile( filename, buffer, win_width, win_height,
+ GL_RGBA );
free(buffer);
+
+ return result;
}