protected void setMaterialState()
{
GL.Enable(EnableCap.ColorMaterial); // turn off per-vertex color
GL.Color4(this.MainColor);
// setup the base color values...
var colorMat = this.colorMaterial ?? _defaultColorMat;
SSColorMaterial.applyColorMaterial(colorMat);
if (textureMaterial != null)
{
GL.ActiveTexture(TextureUnit.Texture0);
GL.Enable(EnableCap.Texture2D);
if (textureMaterial.ambientTex != null || textureMaterial.diffuseTex != null)
{
// fall back onto the diffuse texture in the absence of ambient
SSTexture tex = textureMaterial.diffuseTex ?? textureMaterial.ambientTex;
GL.BindTexture(TextureTarget.Texture2D, tex.TextureID);
}
else
{
GL.BindTexture(TextureTarget.Texture2D, 0);
}
}
}
public static void applyColorMaterial(SSColorMaterial colorMat)
{
colorMat = colorMat ?? defaultColorMat;
GL.Material(MaterialFace.Front, MaterialParameter.Ambient, colorMat.ambientColor);
GL.Material(MaterialFace.Front, MaterialParameter.Diffuse, colorMat.diffuseColor);
GL.Material(MaterialFace.Front, MaterialParameter.Specular, colorMat.specularColor);
GL.Material(MaterialFace.Front, MaterialParameter.Emission, colorMat.emissionColor);
GL.Material(MaterialFace.Front, MaterialParameter.Shininess, colorMat.shininess);
}
private SSMeshOBJSubsetData _loadMaterialSubset(string baseDirectory, WavefrontObjLoader wff,
WavefrontObjLoader.MaterialInfoWithFaces objMatSubset)
{
// generate renderable geometry data...
SSVertex_PosNormTex[] vertices;
UInt16[] triIndices, wireframeIndices;
VertexSoup_VertexFormatBinder.generateDrawIndexBuffer(
wff, objMatSubset, out triIndices, out vertices);
wireframeIndices = OpenTKHelper.generateLineIndicies(triIndices);
SSMeshOBJSubsetData subsetData = new SSMeshOBJSubsetData(
vertices, triIndices, wireframeIndices);
// setup the material...
// load and link every texture present
subsetData.textureMaterial = SSTextureMaterial.FromBlenderMtl(baseDirectory, objMatSubset.mtl);
subsetData.colorMaterial = SSColorMaterial.fromMtl(objMatSubset.mtl);
return(subsetData);
}
private void _renderSetupGLSL(SSRenderConfig renderConfig, SSMainShaderProgram shaderPgm, SSMeshOBJSubsetData subset)
{
// Step 1: setup GL rendering modes...
// GL.Enable(EnableCap.Lighting);
// GL.Enable(EnableCap.Blend);
// GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
// GL.PixelStore(PixelStoreParameter.UnpackAlignment, 1);
// Step 2: setup our material mode and paramaters...
if (renderConfig.drawingShadowMap)
{
// assume SSObject.Render has setup our materials properly for the shadowmap Pass
// TODO: find a better way to do this!
return;
}
SSColorMaterial.applyColorMaterial(subset.colorMaterial);
if (shaderPgm == null)
{
SSShaderProgram.DeactivateAll();
// fixed function single-texture
if (subset.textureMaterial.diffuseTex != null)
{
GL.ActiveTexture(TextureUnit.Texture0);
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, subset.textureMaterial.diffuseTex.TextureID);
}
}
else
{
shaderPgm.Activate();
shaderPgm.SetupTextures(subset.textureMaterial);
}
}
