public static BRDFNode Create(Texture texBRDF)
{
var model = new QuadModel();
var vs = new VertexShader(vertexCode);
var fs = new FragmentShader(fragmentCode);
var array = new ShaderArray(vs, fs);
var map = new AttributeMap();
map.Add("aPos", QuadModel.strPosition);
map.Add("aTexCoords", QuadModel.strTexCoord);
var builder = new RenderMethodBuilder(array, map);
var node = new BRDFNode(model, builder);
node.ModelSize = new vec3(2, 2, 2);
node.texBRDF = texBRDF;
node.Initialize();
return(node);
}
private void FormMain_Load(object sender, EventArgs e)
{
var position = new vec3(9.3968f, -0.7408f, 2.9288f);
var center = new vec3(-0.0710f, -2.2829f, 1.3023f);
var up = new vec3(0, 1, 0);
var camera = new Camera(position, center, up, CameraType.Perspective, this.winGLCanvas1.Width, this.winGLCanvas1.Height);
this.scene = new Scene(camera);
var rootNode = new GroupNode();
this.scene.RootNode = rootNode;
Texture texBRDF = LoadBRDFTexture();
texBRDF.TextureUnitIndex = 2;
Texture prefilterMap = LoadPrefilterMap();
prefilterMap.TextureUnitIndex = 1;
Texture irradianceMap = LoadIrradianceMap();
irradianceMap.TextureUnitIndex = 0;
Texture envCubemap = LoadEnvCubeMap();
Texture texHDR = LoadHDRTexture("environment.hdr");
{
var node = CubemapNode.Create(envCubemap, texHDR);
rootNode.Children.Add(node);
}
{
var node = IrradianceNode.Create(irradianceMap, envCubemap);
rootNode.Children.Add(node);
}
{
var node = PrefilterNode.Create(prefilterMap, envCubemap);
rootNode.Children.Add(node);
}
{
var node = BRDFNode.Create(texBRDF);
rootNode.Children.Add(node);
}
{
var textureGroups = new string[] { "cerberus", "cerberus", "gold", "grass", "plastic", "rock", "rusted_iron", "wall", "wood" };
var models = new ObjVNF[textureGroups.Length];
{
var filename = Path.Combine(System.Windows.Forms.Application.StartupPath, "cerberus.obj_");
var parser = new ObjVNFParser(false, false);
ObjVNFResult result = parser.Parse(filename);
if (result.Error != null)
{
MessageBox.Show(string.Format("Error: {0}", result.Error));
return;
}
ObjVNFMesh mesh = result.Mesh;
// scale it to 0.1 percent.
for (int i = 0; i < mesh.vertexes.Length; i++)
{
mesh.vertexes[i] = mesh.vertexes[i] / 10;
}
//// Dump texture coordinates' layout.
//{
// vec2[] texCoords = mesh.texCoords;
// int polygon = (mesh.faces[0] is ObjVNFTriangle) ? 3 : 4;
// int index = 0;
// var indices = new uint[polygon * mesh.faces.Length];
// foreach (var face in mesh.faces) {
// foreach (var vertexIndex in face.VertexIndexes()) {
// indices[index++] = vertexIndex;
// }
// }
// var bmp = TexCoordAnalyzer.DumpLines(texCoords, indices, 1024);
// bmp.Save("cerberus.texCoords.png");
//}
var model = new ObjVNF(mesh);
models[0] = model;
}
{
var sphere = new Sphere2();//(1, 40, 80);
var filename = Path.Combine(System.Windows.Forms.Application.StartupPath, "sphere2.obj_");
sphere.DumpObjFile(filename, "sphere2");
var parser = new ObjVNFParser(false, true);
ObjVNFResult result = parser.Parse(filename);
if (result.Error != null)
{
MessageBox.Show(string.Format("Error: {0}", result.Error));
return;
}
ObjVNFMesh mesh = result.Mesh;
var model = new ObjVNF(mesh);
for (int i = 1; i < textureGroups.Length; i++)
{
models[i] = model;
}
}
for (int i = 0; i < textureGroups.Length; i++)
{
ObjVNF model = models[i];
string group = textureGroups[i];
var node = PBRNode.Create(model, model.GetSize(),
ObjVNF.strPosition, ObjVNF.strTexCoord, ObjVNF.strNormal);
node.IrradianceMap = irradianceMap;
node.PrefilterMap = prefilterMap;
node.texBRDF = texBRDF;
Texture albedo = GetTexture(string.Format(@"Textures\{0}\albedo.png", group), 3);
node.AlbedoMap = albedo;
Texture ao = GetTexture(string.Format(@"Textures\{0}\ao.png", group), 4);
node.AOMap = ao;
Texture metallic = GetTexture(string.Format(@"Textures\{0}\metallic.png", group), 5);
node.MetallicMap = metallic;
Texture normal = GetTexture(string.Format(@"Textures\{0}\normal.png", group), 6);
node.NormalMap = normal;
Texture roughness = GetTexture(string.Format(@"Textures\{0}\roughness.png", group), 7);
node.RoughnessMap = roughness;
if (i == 0)
{
node.WorldPosition = new vec3(0, -5, 0);
}
else
{
node.WorldPosition = new vec3(
0.0f,
0.0f,
((textureGroups.Length / 2.0f) - i) * spacing);
}
rootNode.Children.Add(node);
}
}
{
var backgroundNode = BackgroundNode.Create(envCubemap);
rootNode.Children.Add(backgroundNode);
}
var list = new ActionList();
var transformAction = new TransformAction(scene);
list.Add(transformAction);
var renderAction = new RenderAction(scene);
list.Add(renderAction);
this.actionList = list;
var manipulater = new FirstPerspectiveManipulater();
manipulater.Bind(camera, this.winGLCanvas1);
}