#ifdef HAVE_CONFIG_H
-# include <config.h>
+# include <simgear_config.h>
#endif
#ifdef HAVE_WINDOWS_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;
}