Issue with Refraction and LEO/Framework

[Rimerdal]

Hey guys,

 

I am fairly new to Leadwerks (Just for the engine a couple days ago) and started going through the tutorials to figure some stuff out. I decided to do them with LEO/Framework that way I would have to do some figuring out to get the tutorials to work and it wasn't just read and type what I see. Well this worked great up until the Transparency and Refraction tutorial. I got Transparency working correctly, but Refraction I have run into somewhat of a roadblock.

 

Basically the Refraction tutorial uses buffers and passes those to the materials shader, but all of the rendering of the worlds and lighting occur in the framework and so I am not sure where or how I would use those buffers... I am sure its something simple I am just missing but any help you can offer would be greatly appreciated. The code is kind of a compilation of a bunch of tutorials thrown together, which is why there is 200 random barrels in the level also.

 

//	====================================================================
//	This file was generated by Leadwerks ProjectWizard
//	http://www.leadwerks.com
//	====================================================================

#include "leo.h"
using namespace LEO ;

inline float rnd( float min=0.0, float max=1.0 ) {
return min + ((float)rand()/RAND_MAX)*(max-min);
}

#if defined( _WINDOWS )
void ErrOut( const char* pstrMessage ) { MessageBoxA(0, pstrMessage, "Error", 0 ); }
int WINAPI WinMain( HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPSTR lpCmdLine,
					int nShowCmd ) 
#else
#include <string>
void ErrOut( const std::string& message ) { puts( message.c_str()); }
int main( int argn, char* argv[] )
#endif
{
   // Set graphics mode        
Engine engine("Leadwerks_Testing",1680,1050);        
if( !engine.IsValid() )        
{                
	ErrOut( "Failed to set graphics mode.");
	return 1;        
}        
RegisterAbstractPath( "C:/Leadwerks Engine SDK" ) ;

// Create framework object and set it to a global object so other scripts can access it        
Framework fw;        
fw.Create();                
if( NULL == fw )        
{               
	ErrOut( "Failed to initialize engine." );
	return 1;        
}        

// Set Lua framework object        
engine.SetObject( "fw", fw );                

// Set Lua framework variable        
Lua lua;        
lua.Create();        
lua.PushObject( fw );        
lua.SetGlobal( "fw" );        
lua.Pop( 1 );        

//	Turn on bloom
fw.GetRenderer().SetBloom(1);

// Get framework main camera        
fw.main.GetCamera().SetPosition( Vec3(0,2,-10) );        

// Load the scene      
Model  scene("Content\\scene.gmf") ;
   if ( !scene.IsValid() )
   {
       MessageBoxA( 0, "Failed to load scene.", "Error", 0 );
       return engine.Free();
   }
scene.SetType(1);

// Load the oildrum
Model model("Content\\oildrum.gmf") ;
   if ( !model.IsValid() )
   {
       MessageBoxA( 0, "Failed to load scene.", "Error", 0 );
       return engine.Free();
   }
model.SetType(1);
model.SetMass(1.0f);

//	Make a bunch of copies
for ( int i=1; i<=200; i++ ) {
	Entity modelCopy = model.Copy();
	modelCopy.SetPosition(Vec3(rnd(-5,5),rnd(5,15),rnd(-5,5)));
	modelCopy.SetRotation(Vec3(rnd(0,360),rnd(0,360),rnd(0,360)));
}

fw.transparency.GetWorld().Set();

//Create the transparent object 
Sphere sphere(50);
sphere.SetPosition(Vec3(0, 3, 0)); 
sphere.SetScale(2.0f);

//Load the transparent material 
Material mat("Content\\glass_refraction.mat");
if( !mat.IsValid() )
{
	MessageBoxA(0, "Failed to load material.", "Error", 0);
	return engine.Free();
}
sphere.Paint(mat);

//	Set Shader params
Shader shader = mat.GetShader();
shader.Set("refractionstrength",0.05f);

fw.main.GetWorld().Set();

// Create a light
DirectionalLight light( CREATENOW );        
light.SetRotation( Vec3(45) );        

// Camera controls
TVec3 camrotation=Vec3(0);
float mx=0;
float my=0;
float move=0;
float strafe=0;

// Center the mouse on the screen and hide it
Mouse::Move(engine.GetWidth()/2,engine.GetHeight()/2);
Mouse::Hide();

//	Turn on Collision
Collisions::Set(1,1);

while( !engine.IsTerminated() && !Keyboard::I****(KEY_ESCAPE) )        
{   
	// Update the mouse input
	mx=Curve((float)Mouse::GetX()-engine.GetWidth()/2, mx, 6);
	my=Curve((float)Mouse::GetY()-engine.GetHeight()/2, my, 6);
	Mouse::Move(engine.GetWidth()/2,engine.GetHeight()/2);

	//	Get keyboard input
	move=Curve((float)(Keyboard::IsDown(KEY_W)-Keyboard::IsDown(KEY_S)), move, 20);
	strafe=Curve((float)(Keyboard::IsDown(KEY_D)-Keyboard::IsDown(KEY_A)), strafe, 20);

	// Lets update the cameras rotation
	camrotation.X=camrotation.X + (my / 10.0f);
	camrotation.Y=camrotation.Y - (mx / 10.0f);
	fw.main.GetCamera().Move( Vec3(strafe / 10.0f,0,move / 10.0f) );
	fw.main.GetCamera().SetRotation(camrotation);

	// Update the world and render it
	fw.Update();                
	fw.Render();                
	engine.Flip( 0 );        
}                

return engine.Free();
}

 

 

Thanks,

-David

[Rimerdal]

I was able to solve my issues by using the second material file provided with the demo which defines the color and depth buffers for you as texture parameters 2 and 3 within the material file itself, I am still kind of curious though if there is a way to do this in code with LEO/Framework.