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clamp float colors

This commit is contained in:
Brian 2007-07-26 08:22:47 -06:00
parent 51b728cf9a
commit daaee90a26
1 changed files with 5 additions and 2 deletions
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7
progs/osdemos/ostest1.c
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@ -409,6 +409,8 @@ test(GLenum type, GLint bits, const char *filename)
printf("Rendering %d bit/channel image: %s\n", bits, filename);
OSMesaColorClamp(GL_TRUE);
init_context();
render_image();
if (Gradient)
@ -421,7 +423,7 @@ test(GLenum type, GLint bits, const char *filename)
if (WriteFiles && filename != NULL) {
if (type == GL_UNSIGNED_SHORT) {
GLushort *buffer16 = (GLushort *) buffer;
GLubyte *buffer8 = malloc(WIDTH * HEIGHT * 4);
GLubyte *buffer8 = (GLubyte *) malloc(WIDTH * HEIGHT * 4);
int i;
for (i = 0; i < WIDTH * HEIGHT * 4; i++)
buffer8[i] = buffer16[i] >> 8;
@ -430,8 +432,9 @@ test(GLenum type, GLint bits, const char *filename)
}
else if (type == GL_FLOAT) {
GLfloat *buffer32 = (GLfloat *) buffer;
GLubyte *buffer8 = malloc(WIDTH * HEIGHT * 4);
GLubyte *buffer8 = (GLubyte *) malloc(WIDTH * HEIGHT * 4);
int i;
/* colors may be outside [0,1] so we need to clamp */
for (i = 0; i < WIDTH * HEIGHT * 4; i++)
buffer8[i] = (GLubyte) (buffer32[i] * 255.0);
write_ppm(filename, buffer8, WIDTH, HEIGHT);