cartoon shadering in NVIDIA FX Compoer

[akira32 112]

The Shader text file toon.fx comes from the sample of the Book "Introduction to 3D Game Programming with DirectX9.0"'s chapter17. Its' result is rendering a teapot with cartoon shader. So I Installed the NVIDIA FX Composer,and load toon.fx and create a teapot. When I click the toon.fx and then "Apply to selection", the Composer appears two error message as below: toon.fx : ID3DXEffectCompiler: There were no techniques toon.fx : ID3DXEffectCompiler: Compilation failed Does the statements of toon.fx have problem? Or the Shader file in the Composer must correspond to some rule? //////////////////////////////////////////////////////////////////////////// // // File: toon.txt // // Author: Frank Luna (C) All Rights Reserved // // System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0 // // Desc: Vertex shader that lights geometry such it appears to be // drawn in a cartoon style. // //////////////////////////////////////////////////////////////////////////// // // Globals // extern matrix WorldViewMatrix; extern matrix WorldViewProjMatrix; extern vector Color; extern vector LightDirection; // // Structures // struct VS_INPUT { vector position : POSITION; vector normal : NORMAL; }; struct VS_OUTPUT { vector position : POSITION; float2 uvCoords : TEXCOORD; vector diffuse : COLOR; }; // // Main // VS_OUTPUT Main(VS_INPUT input) { // zero out each member in output VS_OUTPUT output = (VS_OUTPUT)0; // transform vertex position to homogenous clip space output.position = mul(input.position, WorldViewProjMatrix); // // Transform lights and normals to view space. Set w // components to zero since we're transforming vectors. // Assume there are no scalings in the world // matrix as well. // LightDirection.w = 0.0f; input.normal.w = 0.0f; LightDirection = mul(LightDirection, WorldViewMatrix); input.normal = mul(input.normal, WorldViewMatrix); // // Compute the 1D texture coordinate for toon rendering. // float u = dot(LightDirection, input.normal); // // Clamp to zero if u is negative because u // negative implies the angle between the light // and normal is greater than 90 degrees. And // if that is true then the surface receives // no light. // if( u < 0.0f ) u = 0.0f; // // Set other tex coord to middle. // float v = 0.5f; output.uvCoords.x = u; output.uvCoords.y = v; // save color output.diffuse = Color; return output; }

[yarniso 126]

Hi,

the file you have there is a Cg shader and not a CgFX file. There is a difference between the two. Just open some of the files that come with fx composer and you will see that they are fairly similar, but (as the error message indicates) a .fx file consists of techniques and passes that in turn consist of shader code.

Hope this helps you

Bart

[akira32 112]

Ok I try CgFx file again.

I Installed the Composer and tried to run a cartoon shader file called "tooneffect.fx"(it should be CgFX file)
(tooneffect.fx come from a book called "Introduction to 3D Game Programming with Directx 9.0"'s chapter 19 sample "CartoonEffect")
I tried to load "tooneffect.fx" to Composer and set the Shadertex to be "toonshade.bmp"(at Properties Panel), and then "Apply to Selection".
At last,the object I had selected disappeared.
I use Composer to compile the shader file "tooneffect.fx". Get the message as below:
Building...
Created HLSL EffectCompiler: C:\Documents and Settings\user\My Documents\00CartoonEffect\00CartoonEffect\tooneffect.fx
Creating Material: _25
Reloading Material due to change: tooneffect, Effect: C:\Documents and Settings\user\My Documents\00CartoonEffect\00CartoonEffect\tooneffect.fx
Build Complete - Updated: 2 materials associated with Effect: C:\Documents and Settings\user\My Documents\00CartoonEffect\00CartoonEffect\tooneffect.fx
Errors: 0, Warnings: 0
Created HLSL Effect from EffectCompiler: C:\Documents and Settings\user\My Documents\00CartoonEffect\00CartoonEffect\tooneffect.fx
Found valid technique: Toon
Technique: Toon Validated for this device

////////////////////////////////////////////////////////////////////////////
//
// File: tooneffect.txt
//
// Author: Frank Luna (C) All Rights Reserved
//
// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0
//
// Desc: Cartoon shader in an effect file.
//
////////////////////////////////////////////////////////////////////////////

//
// Globals
//

extern matrix WorldViewMatrix;
extern matrix WorldViewProjMatrix;

extern vector Color;
extern vector LightDirection;
extern texture ShadeTex;

//
// Structures
//

struct VS_INPUT
{
vector position : POSITION;
vector normal : NORMAL;
};

struct VS_OUTPUT
{
vector position : POSITION;
float2 uvCoords : TEXCOORD;
vector diffuse : COLOR;
};
//
// Main
//

VS_OUTPUT Main(VS_INPUT input)
{
// zero out each member in output
VS_OUTPUT output = (VS_OUTPUT)0;


// transform vertex position to homogenous clip space
output.position = mul(input.position, WorldViewProjMatrix);

//
// Transform lights and normals to view space. Set w
// components to zero since we're transforming vectors.
// Assume there are no scalings in the world
// matrix as well.
//
LightDirection.w = 0.0f;
input.normal.w = 0.0f;
LightDirection = mul(LightDirection, WorldViewMatrix);
input.normal = mul(input.normal, WorldViewMatrix);

//
// Compute the 1D texture coordinate for toon rendering.
//
float u = dot(LightDirection, input.normal);

//
// Clamp to zero if u is negative because u
// negative implies the angle between the light
// and normal is greater than 90 degrees. And
// if that is true then the surface receives
// no light.
//
if( u < 0.0f )
u = 0.0f;

//
// Set other tex coord to middle.
//
float v = 0.5f;


output.uvCoords.x = u;
output.uvCoords.y = v;

// save color
output.diffuse = Color;

return output;
}

//
// Sampler
//

sampler ShadeSampler = sampler_state
{
Texture = (ShadeTex);
MinFilter = POINT; // no filtering for cartoon shading
MagFilter = POINT;
MipFilter = NONE;
};


//
// Effect
//

technique Toon
{
pass P0
{
vertexShader = compile vs_1_1 Main();

Sampler[0] = (ShadeSampler);
}
}

[akira32 112]

Tank you.I had solved it.