I'm struggling with XNAnimation (a skeletal animation library for XNA). I want to apply a Toon shader effect to a SkinnedModel, but for some reason i don't see the effect...
If you know XNAnimation then you probably know it uses his own 'basic' fx file in which he calculates the bone transformations.
So i copied that part out and pasted that in my Toon shader file. My character does animate, but for some reason the Toon shader isn't applied, eventhough the code in the VertexShader part (where the bone transformations are done) DO work.
I'm hoping anyone here has any idea what the problem might be. Cause i'm all out of ideas :-(
This is my Toon shader:
float4x4 World;
float4x4 View;
float4x4 Projection;
float4x3 matBones[80];
float3 LightDirection = normalize(float3(1, 1, 1));
// Settings controlling the Toon lighting technique.
float ToonThresholds[2] = { 0.8, 0.4 };
float ToonBrightnessLevels[3] = { 1.3, 0.9, 0.5 };
texture Texture;
sampler ModelTextureSampler = sampler_state
{
Texture = <Texture>;
MinFilter = Linear;
MagFilter = Linear;
MipFilter = Linear;
AddressU = Clamp;
AddressV = Clamp;
};
//---------------------
// Structures
//---------------------
struct VertexShaderInput
{
float4 Position : POSITION0;
float4 Color : COLOR0;
float3 Normal : NORMAL0;
float2 TextureCoordinate : TEXCOORD0;
};
struct LightingVertexShaderOutput
{
float4 Position : POSITION0;
float4 Color : COLOR0;
float2 TextureCoordinate : TEXCOORD0;
float LightAmount : TEXCOORD1;
};
struct LightingPixelShaderInput
{
float4 Color : COLOR0;
float2 TextureCoordinate : TEXCOORD0;
float LightAmount : TEXCOORD1;
};
//---------------------
// Vertex shader
//---------------------
LightingVertexShaderOutput LightingVertexShader(VertexShaderInput input, float4 inBoneIndex :BLENDINDICES0, float4 inBoneWeight :BLENDWEIGHT0)
{
LightingVertexShaderOutput output;
// Calculate the final bone transformation matrix
float4x3 matSmoothSkin = 0;
matSmoothSkin += matBones[inBoneIndex.x] * inBoneWeight.x;
matSmoothSkin += matBones[inBoneIndex.y] * inBoneWeight.y;
matSmoothSkin += matBones[inBoneIndex.z] * inBoneWeight.z;
matSmoothSkin += matBones[inBoneIndex.w] * inBoneWeight.w;
// Combine skin and world transformations
float4x4 matSmoothSkinWorld = 0;
matSmoothSkinWorld[0] = float4(matSmoothSkin[0], 0);
matSmoothSkinWorld[1] = float4(matSmoothSkin[1], 0);
matSmoothSkinWorld[2] = float4(matSmoothSkin[2], 0);
matSmoothSkinWorld[3] = float4(matSmoothSkin[3], 1);
matSmoothSkinWorld = mul(matSmoothSkinWorld, World);
// Apply camera matrices to the input position.
// Original: output.Position = mul(mul(mul(input.Position, World), View), Projection);
output.Position = mul(mul(mul(input.Position, matSmoothSkinWorld), View), Projection);
output.TextureCoordinate = input.TextureCoordinate;
float3 worldNormal = mul(input.Normal, World);
output.LightAmount = dot(worldNormal, LightDirection);
output.Color = input.Color;
return output;
}
//---------------------
// Pixel shader
//---------------------
float4 ToonPixelShader(LightingPixelShaderInput input) : COLOR0
{
float4 color = tex2D(ModelTextureSampler, input.TextureCoordinate);
float light;
if (input.LightAmount > ToonThresholds[0])
light = ToonBrightnessLevels[0];
else if (input.LightAmount > ToonThresholds[1])
light = ToonBrightnessLevels[1];
else
light = ToonBrightnessLevels[2];
color.rgb *= light;
return color;
}
//---------------------
// Technique
//---------------------
technique Toon
{
pass P0
{
VertexShader = compile vs_1_1 LightingVertexShader();
PixelShader = compile ps_2_0 ToonPixelShader();
}
}
This is what i have in my draw loop:
Toon.Parameters["World"].SetValue(world);
Toon.Parameters["View"].SetValue(camera.View);
Toon.Parameters["Projection"].SetValue(camera.Projection);
Toon.CurrentTechnique = Toon.Techniques["Toon"];
foreach (ModelMesh meshes in model.Meshes)
{
foreach (ModelMeshPart parts in meshes.MeshParts)
{
Toon.Parameters["matBones"].SetValue(animationController.SkinnedBoneTransforms);
Toon.Parameters["Texture"].SetValue(Materials[parts].Texture);
parts.Effect = Toon;
}
meshes.Draw();
}
