diff options
Diffstat (limited to 'progs/demos/osdemo16.c')
| -rw-r--r-- | progs/demos/osdemo16.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/progs/demos/osdemo16.c b/progs/demos/osdemo16.c index 6f892620ce6..10ed695d7a5 100644 --- a/progs/demos/osdemo16.c +++ b/progs/demos/osdemo16.c @@ -4,7 +4,7 @@ * * Compile with something like this: * - * gcc osdemo16.c -I../include -L../lib -lOSMesa16 -lm -o osdemo16 + * gcc osdemo16.c -I../../include -L../../lib -lglut -lGLU -lOSMesa16 -lm -o osdemo16 */ @@ -178,6 +178,7 @@ write_targa(const char *filename, const GLushort *buffer, int width, int height) for (y=height-1; y>=0; y--) { for (x=0; x<width; x++) { i = (y*width + x) * 4; + /* just write 8 high bits */ fputc(ptr[i+2] >> 8, f); /* write blue */ fputc(ptr[i+1] >> 8, f); /* write green */ fputc(ptr[i] >> 8, f); /* write red */ @@ -188,13 +189,13 @@ write_targa(const char *filename, const GLushort *buffer, int width, int height) static void -write_ppm(const char *filename, const GLubyte *buffer, int width, int height) +write_ppm(const char *filename, const GLushort *buffer, int width, int height) { const int binary = 0; FILE *f = fopen( filename, "w" ); if (f) { int i, x, y; - const GLubyte *ptr = buffer; + const GLushort *ptr = buffer; if (binary) { fprintf(f,"P6\n"); fprintf(f,"# ppm-file created by osdemo.c\n"); @@ -205,9 +206,10 @@ write_ppm(const char *filename, const GLubyte *buffer, int width, int height) for (y=height-1; y>=0; y--) { for (x=0; x<width; x++) { i = (y*width + x) * 4; - fputc(ptr[i], f); /* write red */ - fputc(ptr[i+1], f); /* write green */ - fputc(ptr[i+2], f); /* write blue */ + /* just write 8 high bits */ + fputc(ptr[i] >> 8, f); /* write red */ + fputc(ptr[i+1] >> 8, f); /* write green */ + fputc(ptr[i+2] >> 8, f); /* write blue */ } } } @@ -221,7 +223,8 @@ write_ppm(const char *filename, const GLubyte *buffer, int width, int height) for (y=height-1; y>=0; y--) { for (x=0; x<width; x++) { i = (y*width + x) * 4; - fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]); + /* just write 8 high bits */ + fprintf(f, " %3d %3d %3d", ptr[i] >> 8, ptr[i+1] >> 8, ptr[i+2] >> 8); counter++; if (counter % 5 == 0) fprintf(f, "\n"); @@ -236,7 +239,7 @@ write_ppm(const char *filename, const GLubyte *buffer, int width, int height) int main( int argc, char *argv[] ) { - void *buffer; + GLushort *buffer; /* Create an RGBA-mode context */ #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305 @@ -251,7 +254,7 @@ int main( int argc, char *argv[] ) } /* Allocate the image buffer */ - buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLushort)); + buffer = (GLushort *) malloc( WIDTH * HEIGHT * 4 * sizeof(GLushort)); if (!buffer) { printf("Alloc image buffer failed!\n"); return 0; |