public void ConvMaterial(MaterialLightComponent matComp)
{
var effect = LookupMaterial(matComp);
_currentNode.Components.Add(new ShaderEffectComponent {
Effect = effect
});
}
private ShaderEffect LookupMaterial(MaterialLightComponent mc)
{
if (_lightMatMap.TryGetValue(mc, out var mat))
{
return(mat);
}
mat = ShaderCodeBuilder.MakeShaderEffectFromMatComp(mc, _currentNode.GetWeights());
_lightMatMap.Add(mc, mat);
return(mat);
}
private void AddApplyLightCalculation(StringBuilder ps, MaterialLightComponent mlc)
{
if (!_hasApplyLightString)
{
return;
}
if (!CheckApplyLightStringForErrors(mlc.ApplyLightString))
{
throw new ArgumentException($"Error while compiling ApplyLight(). Are you sure this:\n {mlc.ApplyLightString} \nis correct?" + $"\nPerhaps (re)consult the documentation of MaterialLightComponent class.");
}
ps.Append("\n\n" + mlc.ApplyLightString);
}
/// <summary>
/// If we have a MaterialLightComponent this constructor is called.
/// </summary>
/// <param name="mlc">The MaterialLightComponent</param>
/// <param name="mesh">The Mesh</param>
/// <param name="wc">WeightCompoennt for animations</param>
public LegacyShaderCodeBuilder(MaterialLightComponent mlc, Mesh mesh, WeightComponent wc = null)
{
// Check WC
if (wc != null)
{
_hasWeightMap = true;
_nBones = wc.Joints.Count;
}
else
{
_nBones = 0;
}
//float f1 = 1;
//var type = f1.GetType();
_normalizeNormals = true;
// Check for mesh
if (mesh != null)
{
AnalyzeMesh(mesh);
}
else
{
_hasVertices = _hasNormals = _hasUVs = true;
}
// Analyze the Material
AnalyzeMaterial(mlc);
// VS
StringBuilder vs = new StringBuilder();
MeshInputDeclarations(vs);
MatrixDeclarations(vs);
VSBody(vs);
_vs = vs.ToString();
// PS
StringBuilder ps = new StringBuilder();
PixelInputDeclarations(ps);
PSCustomBody(ps, mlc);
_ps = ps.ToString();
}
private void AnalyzeMaterial(MaterialLightComponent mlc)
{
_hasDiffuse = mlc.HasDiffuse;
if (_hasDiffuse)
{
_hasDiffuseTexture = (mlc.Diffuse.Texture != null);
}
_hasSpecular = mlc.HasSpecular;
if (_hasSpecular)
{
_hasSpecularTexture = (mlc.Specular.Texture != null);
}
_hasEmissive = mlc.HasEmissive;
if (_hasEmissive)
{
_hasEmissiveTexture = (mlc.Emissive.Texture != null);
}
_hasBump = mlc.HasBump; // always has a texture...
_hasApplyLightString = (mlc.ApplyLightString != null);
_hasFragmentString = (mlc.FragmentShaderString != null);
}
// This is called when MaterialLightComponent is found
private void PSCustomBody(StringBuilder ps, MaterialLightComponent mlc)
{
ParseLights(ps);
AddApplyLightCalculation(ps, mlc);
ps.Append("\n\n void main()\n {\n");
ps.Append(" vec3 result = vec3(0, 0, 0);\n\n");
AddNormalVec(ps);
AddCameraVec(ps);
// ApplyLight() is always called
ps.Append("\n for(int i = 0; i < 3000; i++) { \n ");
ps.Append("\n if(i > MAX_LIGHTS) break; \n ");
ps.Append("\n result += ApplyLight(allLights[i]); \n ");
ps.Append("\n } \n ");
ps.Append("\n vec3 gamma = vec3(1.0/2.2);\n ");
ps.Append("\n vec3 final_light = pow(result, gamma); \n ");
ps.Append("\n gl_FragColor = vec4(final_light, 1.0);\n");
ps.Append(" }\n\n");
}