Post-Processing Problem

[SpiderPig]

I've made this simple program based on the Post-Processing tutorial which works fine until I set a shader which causes the end result to be a solid grey image. I'm positive it's a problem somewhere when setting the shader because it all rendered fine before I added that code. I've tried 'abstract' file system as well as loading each file directly.

Can anyone help? Here's the code :

 

#include "engine.h"


int main(int argc,char** argv)
{

Initialize();
Graphics(640,480);

TWorld world=CreateWorld();


TEntity MainCam=CreateCamera();
       MoveEntity(MainCam,Vec3(0,5,-20));
CameraClearMode(MainCam,BUFFER_DEPTH);

//creat a render buffer for lighting
TBuffer gbuffer=CreateBuffer(640,480,BUFFER_COLOR|BUFFER_DEPTH|BUFFER_NORMAL);
//create a buffer for post processing effects
TBuffer postbuffer=CreateBuffer(640,480,BUFFER_COLOR);

//creat a directional light, e.g. the sun
TLight light=CreateDirectionalLight();
RotateEntity(light,Vec3(45,45,0));


//create the skybox
TWorld background=CreateWorld();
TMesh skybox=CreateCube();
TCamera skycam=CreateCamera();
FlipMesh(skybox);
PaintEntity(skybox,LoadMaterial("FullskiesBlueClear0016_2_L.mat"));
SetWorld(world);



TTerrain terrain=CreateTerrain(64);
ScaleEntity(terrain,Vec3(5,5,5));


TEntity Oak=LoadModel("Oak/Oak.gmf");
PositionEntity(Oak,Vec3(-40,0,-30));


TShader postfilter=LoadShader("abstract::postfilter.vert","abstract::postfilter_desaturate.frag");



TTexture grass1=LoadTexture("terrain_forest_grass.dds");
SetTerrainTexture(terrain,grass1,0,0);
SetTerrainTextureScale(terrain,6,0);

   TVec3 camrotation=Vec3(0);
   float mx=0;
   float my=0;
   HideMouse();
   MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2);


while(!KeyHit(KEY_ESCAPE))
{

  mx=Curve(MouseX()-GraphicsWidth()/2,mx,6);
  my=Curve(MouseY()-GraphicsHeight()/2,my,6);
  MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2);

  camrotation.X=camrotation.X+my/10.0;
  camrotation.Y=camrotation.Y-mx/10.0;
  RotateEntity(MainCam,camrotation);

  if(KeyDown(KEY_W))
  {
	  MoveEntity(MainCam,Vec3(0.0,0.0,0.2));
  };
  if(KeyDown(KEY_S))
  {
	  MoveEntity(MainCam,Vec3(0.0,0.0,-0.2));
  };




  UpdateAppTime();
  UpdateWorld();

         SetBuffer(gbuffer);

  //render the background
  RotateEntity(skycam,EntityRotation(MainCam));
  SetWorld(background);
  RenderWorld();

  SetWorld(world);
  RenderWorld();

  SetBuffer(postbuffer);
  RenderLights(gbuffer);

  SetBuffer(BackBuffer());

  SetShader(postfilter);
  DrawImage(GetColorBuffer(postbuffer),0,GraphicsHeight(),GraphicsWidth(),-GraphicsHeight());




  Flip();

}

Terminate();
return 0;


}

[ZioRed]

I still don't know shaders coding, but I noticed that postfilter_desaturate.frag defines LW_DESATURATE while inside postfilter.frag there are no checks for it but only for LW_SATURATION on line 234:

 

#ifdef LW_SATURATION
Include "saturation.frag"
#endif

 

May be it is a bug or I am completely wrong (I checked on all frags/verts and didn't find any define for LW_SATURATION).

[SpiderPig]

Your right there doesn't seem to be anything for desaturate in "postfilter.frag", I also tried the "postfilter_distancefog.frag" but it still gave me the same grey screen. I have a feeling something else is going here...as well as the failure to recognise "LW_DESATURATE".

 

Would Framework be the better option?