Palette colour filter

[wh1sp3r]

Hi, i'd like to ask, how to pass a texture to the shader ?

 

 

C++ code:

	world = CreateWorld() ;	
gbuffer=CreateBuffer(GraphicsWidth(),GraphicsHeight(),BUFFER_COLOR|BUFFER_DEPTH|BUFFER_NORMAL);
TBuffer postbuffer=CreateBuffer(GraphicsWidth(),GraphicsHeight(),BUFFER_COLOR);

camera=CreateCamera();PositionEntity(camera,Vec3(0,0,-2));

material=LoadMaterial("abstract::cobblestones.mat");
mesh=CreateCube();
PaintEntity(mesh,material);

light=CreateDirectionalLight();
RotateEntity(light,Vec3(45,45,45));
   TShader postfilter;

postfilter=LoadShader("abstract::postfilter.vert","abstract::palette.frag");
TTexture palette = LoadTexture("abstract::palette.dds");

while( !KeyHit() && !AppTerminate() )
{
		TurnEntity( mesh, Vec3( 0.5f*AppSpeed() ) ) ;
		UpdateAppTime();
		UpdateWorld(AppSpeed()) ;	

		SetBuffer(gbuffer);
		RenderWorld();			
		SetBuffer(postbuffer);
		RenderLights(gbuffer);

		SetBuffer(BackBuffer());           

		BindTexture( palette , 1 );
		SetShader(postfilter);			
		DrawImage(GetColorBuffer(postbuffer),0,0,GraphicsWidth(),GraphicsHeight()); 
		SetShader(0);


		DrawText(0,0, "%f", FPS());
		Flip(0) ;
}
return Terminate() ;
}

 

Shader code:

uniform sampler2D Texture0;
uniform sampler2D Texture1;

void main()
{
  vec4 ncolor = vec4(1,0,0,1);
  float colour_distance_nearest = 200000.0;
  float pixelx = 1.0 / 32.0;
  float pixely = 1.0 / 32.0;

  vec4 color = texture2D( Texture0, gl_FragCoord.xy);

  ...


  my super top secret code 

  ...

  gl_FragColor = ncolor;
}

 

i tested shader in rendermonkey and It's working fine

i just want to know, how to pass a second texture, this shows me a black screen

 

thank you

[AndyGFX]

1) Look like you have assigned palette texture to TMU 1 and in you shader you have used only TMU 0.

2) shader is case sensitive, default names for TMU are texture0 - texture32, when you use BindTexture command. (Wiki: BindTexture)

[wh1sp3r]

Hi Andy .. i renamed it .. but same result .. i will send it a link to you hehe

[AndyGFX]

Change BindTexture( palette , 1 ); to BindTexture( palette , 0 );

[wh1sp3r]

Change BindTexture( palette , 1 ); to BindTexture( palette , 0 );

 

i tried it, but i see only white screen, by the way, why ?

 

texture0 is for screenimage and my texture1 is for palette.

[flachdrache]

? what shader e.g.

 

SetShader(postfilter);

BindTexture( palette , 1 );

 

... in ASM Programs a black output usually means the texture target is empty iirc.

 

shouldnt

vec4 ncolor = vec4(1,0,0,1);

be more like

vec4 ncolor = vec4(0);

just guessing though.

[wh1sp3r]

everything solved, so, no problem here