//start the frame
// Pass true for zbuffer_flag to turn on zbuffering
void g3_start_frame_func(int zbuffer_flag, char * filename, int lineno)
{
float s;
int width, height;
float aspect;
//Uncomment this to figure out who called g3_start_frame without calling g3_end_frame.
// mprintf(( "g3_start_frame called from %s, line %d\n", filename, lineno ));
Assert( G3_count == 0 );
G3_count++;
// Clear any user-defined clip planes
g3_stop_user_clip_plane();
// Get the values from the 2d...
width = gr_screen.clip_width;
height = gr_screen.clip_height;
aspect = gr_screen.aspect;
//set int w,h & fixed-point w,h/2
Canvas_width = width;
Canv_w2 = (float)width / 2.0f;
Canvas_height = height;
Canv_h2 = (float)height / 2.0f;
//compute aspect ratio for this canvas
s = aspect*(float)Canvas_height/(float)Canvas_width;
if (s <= 0) { //scale x
Window_scale.xyz.x = s;
Window_scale.xyz.y = 1.0f;
}
else {
Window_scale.xyz.y = 1.0f / s;
Window_scale.xyz.x = 1.0f;
}
Window_scale.xyz.z = 1.0f; //always 1
init_free_points();
if (zbuffer_flag) {
gr_zbuffer_clear(TRUE);
} else {
gr_zbuffer_clear(FALSE);
}
G3_frame_count++;
//init_interface_vars_to_assembler(); //for the texture-mapper
}
/**
* Start the frame
* Pass true for zbuffer_flag to turn on zbuffering
*/
void g3_start_frame_func(int zbuffer_flag, const char *filename, int lineno)
{
float s;
int width, height;
float aspect;
Assert( G3_count == 0 );
G3_count++;
// Clear any user-defined clip planes
g3_stop_user_clip_plane();
// Get the values from the 2d...
width = gr_screen.clip_width;
height = gr_screen.clip_height;
aspect = gr_screen.aspect;
//set int w,h & fixed-point w,h/2
Canvas_width = width;
Canv_w2 = (float)width / 2.0f;
Canvas_height = height;
Canv_h2 = (float)height / 2.0f;
//compute aspect ratio for this canvas
s = aspect*(float)Canvas_height/(float)Canvas_width;
if ( !Cmdline_nohtl || (s <= 0.0f) ) { //scale x
Window_scale.xyz.x = s;
Window_scale.xyz.y = 1.0f;
}
else {
Window_scale.xyz.y = 1.0f / s;
Window_scale.xyz.x = 1.0f;
}
Window_scale.xyz.z = 1.0f; //always 1
init_free_points();
if (zbuffer_flag) {
gr_zbuffer_clear(TRUE);
} else {
gr_zbuffer_clear(FALSE);
}
G3_frame_count++;
}
