opengl mouse, sdl

Graphics and GPU Programming Programming OpenGL

Started by tomsh February 07, 2012 08:44 AM

1 comment, last by tomsh 12 years, 2 months ago

Author

February 07, 2012 08:44 AM

How can I resize the sdl mouse size, to opengl size.

window's with: 640,
window's height: 480

prespective:
gluPerspective( 60.0, ratio, 1.0, 1024.0 );

glTranslatef( 0.f, 0.f, -25.f );

thanks a lot!

V-man

813

February 07, 2012 02:43 PM

Make the SDL mouse (which is the OS mouse) non visible.
Render a mouse using GL in ortho projection.
http://www.opengl.org/wiki/FAQ#How_to_render_in_pixel_space

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

tomsh

Author

February 08, 2012 09:07 AM

Thank you a lot