Low fps when zoomed in.

mih · 01-19-2010 01:00 PM

Hi, I updated my car editor to the last version of the engine and I have noticed a strange problem with the rendering speed :

When I zoom camera close to the model the fps falls down immedietly :

The same model, with normal camera distance :

And that is the way I render the model :

Code:

case RM_PREPARE:

            for(int i=0; i<selected_mesh_parts.elms(); i++)

            {

                car.hide(selected_mesh_parts(i)());

            }

                car.draw(Matrix(mesh_pos));

                wheel_left.draw(wheels[0].matrix());

            wheel_right.draw(wheels[1].matrix());

            wheel_left.draw(wheels[2].matrix());

            wheel_right.draw(wheels[3].matrix());

            car.showAll();

            car_stage.draw(stage_actor.matrix());

        break;

        case RM_SHD_MAP:

            for(int i=0; i<selected_mesh_parts.elms(); i++)

            {

                car.hide(selected_mesh_parts(i)());

            }

            car.drawShadow(Matrix(Vec(mesh_pos)));

            wheel_left.drawShadow(wheels[0].matrix());

            wheel_right.draw(wheels[1].matrix());

            wheel_left.drawShadow(wheels[2].matrix());

            wheel_right.drawShadow(wheels[3].matrix());

            car.showAll();

            car_stage.drawShadow(stage_actor.matrix());

        break;

Where selected_mesh_parts are the names of the transparent parts, which are not present in this model. Any ideas what am I doing wrong ? smile

Tottel · 01-19-2010 01:27 PM

I think that's pretty normal.. The engine will automatically add more detail to the model and textures when you zoom in. Meaning a lower FPS.

mih · 01-19-2010 01:36 PM

Hm I don't think that it's normal, because in the earlier versions of the engine the fps were on the same level all the time. The model is about 9k tris and when zoomed in It starting to run really slow and camera is 'jumping' when I move around so It's rather strange with so little verts to render pfft

**Esenthel** · 01-19-2010 05:29 PM

please check version history and see what effects have been updated/changed
but I dont think about anything which could affect this

try checking other stuff, like programs running in background, graphic drivers..

mih · 01-19-2010 05:54 PM

But the way I render model is ok ? RM_PREPARE is all I must use to do rendering ? or maybe the RM_SOLID must be used too ?
I have seen that the .draw method is not using automatic frustum culling anymore and I didn't use It when rendering the model, so can It be the problem ?

**Esenthel** · 01-19-2010 05:57 PM

ah yes,
I guess that's the case
please make sure to use frustum culling in RM_PREPARE and RM_SHD_MAP

mih · 01-19-2010 06:04 PM

But how to use It on the mesh ? because Frustum() function desn't take a mesh parameter

**Esenthel** · 01-19-2010 06:14 PM

frustum(mesh->box, mesh matrix)

mih · 01-19-2010 06:49 PM

Hm It didn't help, any ideas what more can be cause of that slow-down ? All i have changed in my code was the way objects are rendered, so I think It must be something with that but i have no idea what can It be ;/

**Esenthel** · 01-19-2010 06:52 PM

why do you have

wheel_right.draw(wheels[1].matrix());
wheel_left.drawShadow(wheels[2].matrix());

'draw' in shadow mode?

**Esenthel** · 01-19-2010 06:54 PM

2nd thing which was changed was shadow map split proportions adjusted, D.shadow_step

mih · 01-19-2010 07:15 PM

Oh didn't see that wink

but It wasn't the problem, because It slow down even if only stage is rendered and no car is loaded yet. I will check those shadows tomorrow, anyway thanks for help wink

Low fps when zoomed in.
Author	Message