558 lines
23 KiB
C#
558 lines
23 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using System.Threading.Tasks;
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using GL_EditorFramework.GL_Core;
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using GL_EditorFramework.Interfaces;
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using Toolbox.Library.IO;
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using Toolbox.Library;
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using OpenTK;
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using OpenTK.Graphics.OpenGL;
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namespace Toolbox.Library.Rendering
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{
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public class GenericModelRenderer : AbstractGlDrawable
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{
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public virtual float PreviewScale { get; set; } = 1.0f;
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public static List<ITextureContainer> TextureContainers = new List<ITextureContainer>();
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public List<GenericRenderedObject> Meshes = new List<GenericRenderedObject>();
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public STSkeleton Skeleton = new STSkeleton();
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public Matrix4 ModelTransform = Matrix4.Identity;
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public virtual bool UsePBR { get; set; } = false;
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// gl buffer objects
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int vbo_position;
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int ibo_elements;
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private void GenerateBuffers()
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{
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GL.GenBuffers(1, out vbo_position);
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GL.GenBuffers(1, out ibo_elements);
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UpdateVertexData();
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UpdateTextureMaps();
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}
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public void Destroy()
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{
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GL.DeleteBuffer(vbo_position);
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GL.DeleteBuffer(ibo_elements);
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}
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public void UpdateVertexData()
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{
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if (!Runtime.OpenTKInitialized)
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return;
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GenericRenderedObject.DisplayVertex[] Vertices;
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int[] Faces;
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int poffset = 0;
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int voffset = 0;
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List<GenericRenderedObject.DisplayVertex> Vs = new List<GenericRenderedObject.DisplayVertex>();
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List<int> Ds = new List<int>();
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foreach (GenericRenderedObject shape in Meshes)
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{
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List<GenericRenderedObject.DisplayVertex> pv = shape.CreateDisplayVertices();
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Vs.AddRange(pv);
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int GroupOffset = 0;
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int groupIndex = 0;
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if (shape.PolygonGroups.Count > 0)
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{
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foreach (var group in shape.PolygonGroups)
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{
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group.Offset = poffset * 4;
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for (int i = 0; i < group.displayFaceSize; i++)
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{
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Ds.Add(shape.display[GroupOffset + i] + voffset);
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}
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poffset += group.displayFaceSize;
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GroupOffset += group.displayFaceSize;
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}
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voffset += pv.Count;
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}
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else if (shape.lodMeshes.Count > 0)
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{
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shape.Offset = poffset * 4;
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for (int i = 0; i < shape.lodMeshes[shape.DisplayLODIndex].displayFaceSize; i++)
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{
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Ds.Add(shape.display[i] + voffset);
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}
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poffset += shape.lodMeshes[shape.DisplayLODIndex].displayFaceSize;
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voffset += pv.Count;
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}
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}
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// Binds
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Vertices = Vs.ToArray();
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Faces = Ds.ToArray();
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// Bind only once!
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GL.BindBuffer(BufferTarget.ArrayBuffer, vbo_position);
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GL.BufferData<GenericRenderedObject.DisplayVertex>(BufferTarget.ArrayBuffer, (IntPtr)(Vertices.Length * GenericRenderedObject.DisplayVertex.Size), Vertices, BufferUsageHint.StaticDraw);
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GL.BindBuffer(BufferTarget.ElementArrayBuffer, ibo_elements);
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GL.BufferData<int>(BufferTarget.ElementArrayBuffer, (IntPtr)(Faces.Length * sizeof(int)), Faces, BufferUsageHint.StaticDraw);
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LibraryGUI.UpdateViewport();
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}
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public void UpdateTextureMaps()
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{
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if (!Runtime.OpenTKInitialized)
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return;
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LibraryGUI.UpdateViewport();
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}
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public ShaderProgram defaultShaderProgram;
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public override void Prepare(GL_ControlModern control)
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{
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if (UsePBR)
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{
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string pathFrag = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "GFBModel.frag");
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string pathVert = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "GFBModel.vert");
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string pathPbrUtiltyFrag = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "Utility") + "\\PbrUtility.frag";
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string pathUtiltyFrag = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "Utility") + "\\Utility.frag";
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var defaultFrag = new FragmentShader(File.ReadAllText(pathFrag));
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var defaultVert = new VertexShader(File.ReadAllText(pathVert));
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var pbrUtiltyFrag = new FragmentShader(System.IO.File.ReadAllText(pathPbrUtiltyFrag));
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var utiltyFrag = new FragmentShader(System.IO.File.ReadAllText(pathUtiltyFrag));
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defaultShaderProgram = new ShaderProgram(new Shader[]
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{ utiltyFrag, pbrUtiltyFrag, defaultVert, defaultFrag }, control);
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}
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else
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{
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string pathFrag = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "GenericShader.frag");
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string pathVert = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "GenericShader.vert");
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string pathUtiltyFrag = System.IO.Path.Combine(Runtime.ExecutableDir, "Shader", "Utility") + "\\Utility.frag";
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var defaultFrag = new FragmentShader(File.ReadAllText(pathFrag));
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var defaultVert = new VertexShader(File.ReadAllText(pathVert));
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var utiltyFrag = new FragmentShader(System.IO.File.ReadAllText(pathUtiltyFrag));
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defaultShaderProgram = new ShaderProgram(new Shader[]
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{ utiltyFrag, defaultVert, defaultFrag }, control);
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}
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}
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public override void Prepare(GL_ControlLegacy control)
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{
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}
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public override void Draw(GL_ControlLegacy control, Pass pass)
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{
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if (!Runtime.OpenTKInitialized)
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return;
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}
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public override void Draw(GL_ControlModern control, Pass pass)
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{
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if (!Runtime.OpenTKInitialized || pass == Pass.TRANSPARENT)
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return;
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bool buffersWereInitialized = ibo_elements != 0 && vbo_position != 0;
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if (!buffersWereInitialized)
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GenerateBuffers();
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ShaderProgram shader = defaultShaderProgram;
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control.CurrentShader = shader;
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control.UpdateModelMatrix(Matrix4.CreateScale(Runtime.previewScale * PreviewScale) * ModelTransform);
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OnRender(control);
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Matrix4 camMat = control.ModelMatrix * control.CameraMatrix * control.ProjectionMatrix;
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Matrix4 invertedCamera = Matrix4.Identity;
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if (invertedCamera.Determinant != 0)
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invertedCamera = camMat.Inverted();
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Vector3 lightDirection = new Vector3(0f, 0f, -1f);
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shader.SetVector3("difLightDirection", Vector3.TransformNormal(lightDirection, invertedCamera).Normalized());
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// GL.Enable(EnableCap.AlphaTest);
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// GL.AlphaFunc(AlphaFunction.Gequal, 0.1f);
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SetRenderSettings(shader);
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DrawModels(shader, control);
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GL.UseProgram(0);
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GL.Disable(EnableCap.DepthTest);
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GL.Enable(EnableCap.DepthTest);
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GL.Enable(EnableCap.CullFace);
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GL.CullFace(CullFaceMode.Back);
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}
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public virtual void OnRender(GLControl control)
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{
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}
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private static void SetBoneUniforms(GLControl control, ShaderProgram shader, STSkeleton Skeleton, STGenericObject mesh)
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{
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int i = 0;
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foreach (var bone in Skeleton.bones)
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{
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Matrix4 transform = bone.invert * bone.Transform;
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GL.UniformMatrix4(GL.GetUniformLocation(shader.programs[control], String.Format("bones[{0}]", i++)), false, ref transform);
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}
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/* foreach (var FaceGroup in fshp.Shape.FaceGroups)
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{
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if (FaceGroup.BoneIndexList == null)
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continue;
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for (int i = 0; i < FaceGroup.BoneIndexList.Length; i++)
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{
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GL.Uniform1(GL.GetUniformLocation(shader.programs[control], String.Format("boneIds[{0}]", i)), FaceGroup.BoneIndexList[i]);
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Matrix4 transform = fmdl.Skeleton.Renderable.bones[(int)FaceGroup.BoneIndexList[i]].invert * fmdl.Skeleton.Renderable.bones[(int)FaceGroup.BoneIndexList[i]].Transform;
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GL.UniformMatrix4(GL.GetUniformLocation(shader.programs[control], String.Format("bones[{0}]", i)), false, ref transform);
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}
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}*/
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}
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private void SetUniformBlocks(STGenericMaterial mat, ShaderProgram shader, STGenericObject m)
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{
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}
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public virtual void SetRenderData(STGenericMaterial mat, ShaderProgram shader, STGenericObject m)
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{
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}
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private static void SetUniforms(STGenericMaterial mat, ShaderProgram shader, STGenericObject m)
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{
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//UV Scale
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shader.SetFloat("ColorUVScaleU", 1);
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shader.SetFloat("ColorUVScaleV", 1);
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//UV Translate
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shader.SetFloat("ColorUVTranslateU", 0);
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shader.SetFloat("ColorUVTranslateV", 0);
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}
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private static void SetUniformData(STGenericMaterial mat, ShaderProgram shader, string propertyName)
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{
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}
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private static void LoadDebugTextureMaps(ShaderProgram shader)
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{
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GL.ActiveTexture(TextureUnit.Texture0 + 1);
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GL.BindTexture(TextureTarget.Texture2D, RenderTools.defaultTex.RenderableTex.TexID);
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GL.Uniform1(shader["debugOption"], 2);
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GL.ActiveTexture(TextureUnit.Texture11);
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GL.Uniform1(shader["weightRamp1"], 11);
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GL.BindTexture(TextureTarget.Texture2D, RenderTools.BoneWeightGradient.Id);
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GL.ActiveTexture(TextureUnit.Texture12);
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GL.Uniform1(shader["weightRamp2"], 12);
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GL.BindTexture(TextureTarget.Texture2D, RenderTools.BoneWeightGradient2.Id);
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GL.ActiveTexture(TextureUnit.Texture10);
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GL.Uniform1(shader["UVTestPattern"], 10);
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GL.BindTexture(TextureTarget.Texture2D, RenderTools.uvTestPattern.RenderableTex.TexID);
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}
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private void SetTextureUniforms(STGenericMaterial mat, STGenericObject m, ShaderProgram shader)
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{
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SetDefaultTextureAttributes(mat, shader);
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LoadDebugTextureMaps(shader);
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shader.SetInt("RedChannel", 0);
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shader.SetInt("GreenChannel", 1);
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shader.SetInt("BlueChannel", 2);
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shader.SetInt("AlphaChannel", 3);
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LoadPBRMaps(shader);
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foreach (STGenericMatTexture matex in mat.TextureMaps)
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{
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if (matex.Type == STGenericMatTexture.TextureType.Diffuse)
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{
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shader.SetBoolToInt("HasDiffuse", true);
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TextureUniform(shader, mat, true, "DiffuseMap", matex);
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}
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}
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}
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private static void LoadPBRMaps(ShaderProgram shader)
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{
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GL.ActiveTexture(TextureUnit.Texture0 + 26);
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RenderTools.specularPbr.Bind();
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shader.SetInt("specularIbl", 26);
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// GL.GenerateMipmap(GenerateMipmapTarget.TextureCubeMap);
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// PBR IBL
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GL.ActiveTexture(TextureUnit.Texture0 + 25);
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RenderTools.diffusePbr.Bind();
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shader.SetInt("irradianceMap", 25);
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GL.ActiveTexture(TextureUnit.Texture0 + 27);
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RenderTools.brdfPbr.Bind();
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shader.SetInt("brdfLUT", 27);
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}
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private void TextureUniform(ShaderProgram shader, STGenericMaterial mat, bool hasTex, string name, STGenericMatTexture mattex)
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{
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if (mattex.textureState == STGenericMatTexture.TextureState.Binded)
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return;
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// Bind the texture and create the uniform if the material has the right textures.
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if (hasTex)
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{
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GL.Uniform1(shader[name], BindTexture(mattex, shader));
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}
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}
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public virtual int BindTexture(STGenericMatTexture tex, ShaderProgram shader)
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{
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GL.ActiveTexture(TextureUnit.Texture0 + tex.textureUnit + 1);
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GL.BindTexture(TextureTarget.Texture2D, RenderTools.defaultTex.RenderableTex.TexID);
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string activeTex = tex.Name;
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foreach (var container in TextureContainers)
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{
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for (int i = 0; i < container.TextureList?.Count; i++)
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{
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if (activeTex == container.TextureList[i].Text)
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{
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BindGLTexture(tex, shader, container.TextureList[i]);
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return tex.textureUnit + 1;
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}
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}
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}
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return tex.textureUnit + 1;
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}
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public static void BindGLTexture(STGenericMatTexture tex, ShaderProgram shader, STGenericTexture texture)
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{
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if (texture.RenderableTex == null || !texture.RenderableTex.GLInitialized)
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texture.LoadOpenGLTexture();
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if (tex.Type == STGenericMatTexture.TextureType.Diffuse)
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{
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shader.SetInt("RedChannel", (int)texture.RedChannel);
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shader.SetInt("GreenChannel", (int)texture.GreenChannel);
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shader.SetInt("BlueChannel", (int)texture.BlueChannel);
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shader.SetInt("AlphaChannel", (int)texture.AlphaChannel);
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}
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// GL.ActiveTexture(TextureUnit.Texture0 + texid);
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GL.BindTexture(TextureTarget.Texture2D, texture.RenderableTex.TexID);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)STGenericMatTexture.wrapmode[tex.WrapModeS]);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)STGenericMatTexture.wrapmode[tex.WrapModeT]);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)STGenericMatTexture.minfilter[tex.MinFilter]);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)STGenericMatTexture.magfilter[tex.MagFilter]);
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GL.TexParameter(TextureTarget.Texture2D, (TextureParameterName)ExtTextureFilterAnisotropic.TextureMaxAnisotropyExt, 0.0f);
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}
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private static void SetDefaultTextureAttributes(STGenericMaterial mat, ShaderProgram shader)
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{
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}
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private void SetRenderSettings(ShaderProgram shader)
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{
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shader.SetInt("renderType", (int)Runtime.viewportShading);
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shader.SetInt("selectedBoneIndex", Runtime.SelectedBoneIndex);
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shader.SetBoolToInt("renderVertColor", Runtime.renderVertColor);
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shader.SetInt("uvChannel", (int)Runtime.uvChannel);
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}
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public virtual void DrawModels(ShaderProgram shader, GL_ControlModern control)
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{
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shader.EnableVertexAttributes();
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foreach (STGenericObject shp in Meshes)
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{
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if (shp.Checked)
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DrawModel(control, Skeleton, shp.GetMaterial(), shp, shader);
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}
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shader.DisableVertexAttributes();
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}
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private void SetVertexAttributes(STGenericObject m, ShaderProgram shader)
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{
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GL.BindBuffer(BufferTarget.ArrayBuffer, vbo_position);
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GL.VertexAttribPointer(shader.GetAttribute("vPosition"), 3, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 0); //+12
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GL.VertexAttribPointer(shader.GetAttribute("vNormal"), 3, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 12); //+12
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GL.VertexAttribPointer(shader.GetAttribute("vTangent"), 3, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 24); //+12
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GL.VertexAttribPointer(shader.GetAttribute("vUV0"), 2, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 36); //+8
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GL.VertexAttribPointer(shader.GetAttribute("vColor"), 4, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 44); //+16
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GL.VertexAttribIPointer(shader.GetAttribute("vBone"), 4, VertexAttribIntegerType.Int, GenericRenderedObject.DisplayVertex.Size, new IntPtr(60)); //+16
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GL.VertexAttribPointer(shader.GetAttribute("vWeight"), 4, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 76);//+16
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GL.VertexAttribPointer(shader.GetAttribute("vUV1"), 2, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 92);//+8
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GL.VertexAttribPointer(shader.GetAttribute("vUV2"), 2, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 100);//+8
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GL.VertexAttribPointer(shader.GetAttribute("vBinormal"), 3, VertexAttribPointerType.Float, false, GenericRenderedObject.DisplayVertex.Size, 108); //+12
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GL.BindBuffer(BufferTarget.ElementArrayBuffer, ibo_elements);
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}
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public void DrawModel(GLControl control, STSkeleton Skeleton, STGenericMaterial Material, STGenericObject m, ShaderProgram shader)
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{
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if (m.PolygonGroups.Count > 0)
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{
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foreach (var group in m.PolygonGroups)
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{
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if (group.faces.Count <= 3)
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return;
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SetRenderData(Material, shader, m);
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SetUniforms(Material, shader, m);
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SetUniformBlocks(Material, shader, m);
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SetBoneUniforms(control, shader, Skeleton, m);
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SetVertexAttributes(m, shader);
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SetTextureUniforms(Material, m, shader);
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if (m.IsSelected || m.GetMaterial().IsSelected)
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{
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DrawModelSelection(group, shader);
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}
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else if (Runtime.RenderModelWireframe)
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{
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DrawModelWireframe(group, shader);
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}
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else
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{
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if (Runtime.RenderModels)
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{
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GL.DrawElements(GetPrimitiveType(group), group.displayFaceSize, DrawElementsType.UnsignedInt, group.Offset);
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}
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}
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}
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}
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else
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{
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if (m.lodMeshes.Count <= 0 || m.lodMeshes[m.DisplayLODIndex].faces.Count <= 3)
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return;
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SetUniforms(Material, shader, m);
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SetUniformBlocks(Material, shader, m);
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SetBoneUniforms(control, shader, Skeleton, m);
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SetVertexAttributes(m, shader);
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SetTextureUniforms(Material, m, shader);
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if (m.IsSelected)
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{
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DrawModelSelection(m, shader);
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}
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else if (Runtime.RenderModelWireframe)
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{
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DrawModelWireframe(m, shader);
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}
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else
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{
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if (Runtime.RenderModels)
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{
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GL.DrawElements(GetPrimitiveType(m.lodMeshes[m.DisplayLODIndex]), m.lodMeshes[m.DisplayLODIndex].displayFaceSize, DrawElementsType.UnsignedInt, m.Offset);
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}
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}
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}
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}
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private static void DrawModelWireframe(STGenericObject p, ShaderProgram shader)
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{
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// use vertex color for wireframe color
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shader.SetInt("colorOverride", 1);
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GL.PolygonMode(MaterialFace.Front, PolygonMode.Line);
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GL.Enable(EnableCap.LineSmooth);
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GL.LineWidth(1.5f);
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GL.DrawElements(PrimitiveType.Triangles, p.lodMeshes[p.DisplayLODIndex].displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
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GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
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shader.SetInt("colorOverride", 0);
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|
}
|
|
|
|
private static PrimitiveType GetPrimitiveType(STGenericObject.LOD_Mesh p)
|
|
{
|
|
switch (p.PrimativeType)
|
|
{
|
|
case STPrimitiveType.Triangles: return PrimitiveType.Triangles;
|
|
case STPrimitiveType.TrangleStrips: return PrimitiveType.TriangleStrip;
|
|
case STPrimitiveType.Quads: return PrimitiveType.Quads;
|
|
case STPrimitiveType.Points: return PrimitiveType.Points;
|
|
case STPrimitiveType.LineStrips: return PrimitiveType.LineStrip;
|
|
case STPrimitiveType.Lines: return PrimitiveType.Lines;
|
|
default: return PrimitiveType.Triangles;
|
|
}
|
|
}
|
|
|
|
private static PrimitiveType GetPrimitiveType(STGenericPolygonGroup p)
|
|
{
|
|
switch (p.PrimativeType)
|
|
{
|
|
case STPrimitiveType.Triangles: return PrimitiveType.Triangles;
|
|
case STPrimitiveType.TrangleStrips: return PrimitiveType.TriangleStrip;
|
|
case STPrimitiveType.Quads: return PrimitiveType.Quads;
|
|
case STPrimitiveType.Points: return PrimitiveType.Points;
|
|
case STPrimitiveType.LineStrips: return PrimitiveType.LineStrip;
|
|
case STPrimitiveType.Lines: return PrimitiveType.Lines;
|
|
default: return PrimitiveType.Triangles;
|
|
}
|
|
}
|
|
|
|
private static void DrawModelWireframe(STGenericPolygonGroup p, ShaderProgram shader)
|
|
{
|
|
// use vertex color for wireframe color
|
|
shader.SetInt("colorOverride", 1);
|
|
GL.PolygonMode(MaterialFace.Front, PolygonMode.Line);
|
|
GL.Enable(EnableCap.LineSmooth);
|
|
GL.LineWidth(1.5f);
|
|
GL.DrawElements(GetPrimitiveType(p), p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
|
|
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
|
|
shader.SetInt("colorOverride", 0);
|
|
}
|
|
|
|
|
|
private static void DrawModelSelection(STGenericObject p, ShaderProgram shader)
|
|
{
|
|
GL.Uniform1(shader["colorOverride"], 1);
|
|
GL.PolygonMode(MaterialFace.Front, PolygonMode.Line);
|
|
GL.Enable(EnableCap.LineSmooth);
|
|
GL.LineWidth(1.3f);
|
|
GL.DrawElements(GetPrimitiveType(p.lodMeshes[p.DisplayLODIndex]), p.lodMeshes[p.DisplayLODIndex].displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
|
|
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
|
|
GL.Uniform1(shader["colorOverride"], 0);
|
|
|
|
GL.DrawElements(GetPrimitiveType(p.lodMeshes[p.DisplayLODIndex]), p.lodMeshes[p.DisplayLODIndex].displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
|
|
}
|
|
|
|
private static void DrawModelSelection(STGenericPolygonGroup p, ShaderProgram shader)
|
|
{
|
|
GL.Uniform1(shader["colorOverride"], 1);
|
|
GL.PolygonMode(MaterialFace.Front, PolygonMode.Line);
|
|
GL.Enable(EnableCap.LineSmooth);
|
|
GL.LineWidth(1.3f);
|
|
GL.DrawElements(GetPrimitiveType(p), p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
|
|
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
|
|
GL.Uniform1(shader["colorOverride"], 0);
|
|
|
|
GL.DrawElements(GetPrimitiveType(p), p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
|
|
}
|
|
}
|
|
}
|