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georges 2001-02-09 01:50:04 +00:00
parent 9847efb688
commit 227cfe307d
1 changed files with 10 additions and 7 deletions
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17
panda/src/glgsg/glGraphicsStateGuardian.cxx
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@ -939,13 +939,7 @@ draw_sprite(const GeomSprite *geom) {
modelview_mat = ctatt->get_matrix();
// get the camera information
float tnear, tfar, hfov, aspect_ratio;
tnear = _actual_display_region->get_camera()->get_near();
tfar = _actual_display_region->get_camera()->get_far();
hfov = _actual_display_region->get_camera()->get_hfov();
aspect_ratio = _actual_display_region->get_camera()->get_aspect();
// load up our own matrices
float aspect_ratio = _actual_display_region->get_camera()->get_aspect();
// Note on DO_CHARLES_PROJECTION_MAT
// apparently adjusting the projection as done below is incorrect
@ -961,17 +955,26 @@ draw_sprite(const GeomSprite *geom) {
float x_frustum_scale, y_frustum_scale;
float recip_x_frustum_scale, recip_y_frustum_scale;
float tnear, tfar, hfov;
// get the camera information
tnear = _actual_display_region->get_camera()->get_near();
tfar = _actual_display_region->get_camera()->get_far();
hfov = _actual_display_region->get_camera()->get_hfov();
// extract the left and top bounds of the current camera
x_frustum_scale = tanf(hfov * 0.5f * (3.1415926f / 180.0f)) * tnear;
recip_x_frustum_scale = 1.0f / x_frustum_scale;
y_frustum_scale = x_frustum_scale / aspect_ratio;
recip_y_frustum_scale = 1.0f / y_frustum_scale;
// load up our own matrices
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1.0f, 1.0f, -1.0f, 1.0f, tnear, tfar);
#endif
// load up our own matrices
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();