FBO/Render Target Example

Author: neokabuto

OpenTK_RTExample/OpenTK_RTExample.sln

@@ -0,0 +1,28 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK_RTExample", "OpenTK_RTExample\OpenTK_RTExample.csproj", "{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Debug|x64.ActiveCfg = Debug|x64
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Debug|x64.Build.0 = Debug|x64
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Debug|x86.ActiveCfg = Debug|x86
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Debug|x86.Build.0 = Debug|x86
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Release|x64.ActiveCfg = Release|x64
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Release|x64.Build.0 = Release|x64
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Release|x86.ActiveCfg = Release|x86
+		{CE5CD75D-8626-4CD8-83FC-B7A4868DAEC0}.Release|x86.Build.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

OpenTK_RTExample/OpenTK_RTExample/Camera.cs

@@ -0,0 +1,54 @@
+using OpenTK;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenTK_RTExample
+{
+    class Camera
+    {
+        public Vector3 Position = Vector3.Zero;
+        public Vector3 Orientation = new Vector3((float)Math.PI, 0f, 0f);
+        public float MoveSpeed = 0.2f;
+        public float MouseSensitivity = 0.01f;
+        public Vector3 UpVector = Vector3.UnitY;
+
+        public Matrix4 GetViewMatrix()
+        {
+            Vector3 lookat = new Vector3();
+
+            lookat.X = (float)(Math.Sin((float)Orientation.X) * Math.Cos((float)Orientation.Y));
+            lookat.Y = (float)Math.Sin((float)Orientation.Y);
+            lookat.Z = (float)(Math.Cos((float)Orientation.X) * Math.Cos((float)Orientation.Y));
+
+            return Matrix4.LookAt(Position, Position + lookat, UpVector);
+        }
+
+        public void Move(float x, float y, float z)
+        {
+            Vector3 offset = new Vector3();
+
+            Vector3 forward = new Vector3((float)Math.Sin((float)Orientation.X), 0, (float)Math.Cos((float)Orientation.X));
+            Vector3 right = new Vector3(-forward.Z, 0, forward.X);
+
+            offset += x * right;
+            offset += y * forward;
+            offset.Y += z;
+
+            offset.NormalizeFast();
+            offset = Vector3.Multiply(offset, MoveSpeed);
+
+            Position += offset;
+        }
+
+        public void AddRotation(float x, float y)
+        {
+            x = x * MouseSensitivity;
+            y = y * MouseSensitivity;
+
+            Orientation.X = (Orientation.X + x) % ((float)Math.PI * 2.0f);
+            Orientation.Y = Math.Max(Math.Min(Orientation.Y + y, (float)Math.PI / 2.0f - 0.1f), (float)-Math.PI / 2.0f + 0.1f);
+        }
+    }
+}

OpenTK_RTExample/OpenTK_RTExample/Cube.cs

@@ -0,0 +1,86 @@
+using System;
+using OpenTK;
+
+namespace OpenTK_RTExample
+{
+    class Cube : Volume
+    {
+        public Cube()
+        {
+            VertCount = 8;
+            IndiceCount = 36;
+            ColorDataCount = 8;
+        }
+        
+        public override Vector3[] GetVerts()
+        {
+            return new Vector3[] {new Vector3(-0.5f, -0.5f,  -0.5f),
+                new Vector3(0.5f, -0.5f,  -0.5f),
+                new Vector3(0.5f, 0.5f,  -0.5f),
+                new Vector3(-0.5f, 0.5f,  -0.5f),
+                new Vector3(-0.5f, -0.5f,  0.5f),
+                new Vector3(0.5f, -0.5f,  0.5f),
+                new Vector3(0.5f, 0.5f,  0.5f),
+                new Vector3(-0.5f, 0.5f,  0.5f),
+            };
+        }
+
+        public override int[] GetIndices(int offset = 0)
+        {
+            int[] inds = new int[] {
+                //left
+                0, 2, 1,
+                0, 3, 2,
+                //back
+                1, 2, 6,
+                6, 5, 1,
+                //right
+                4, 5, 6,
+                6, 7, 4,
+                //top
+                2, 3, 6,
+                6, 3, 7,
+                //front
+                0, 7, 3,
+                0, 4, 7,
+                //bottom
+                0, 1, 5,
+                0, 5, 4
+            };
+
+            if (offset != 0)
+            {
+                for (int i = 0; i < inds.Length; i++)
+                {
+                    inds[i] += offset;
+                }
+            }
+
+            return inds;
+        }
+
+        public override Vector3[] GetColorData()
+        {
+            Random r = new Random(42);
+
+            Vector3[] colors = new Vector3[VertCount];
+
+            for (int i = 0; i < colors.Length; i++)
+            {
+                colors[i] = new Vector3((float)r.NextDouble(), (float)r.NextDouble(), (float)r.NextDouble());
+            }
+
+            return colors;
+        }
+
+        public override void CalculateModelMatrix()
+        {
+            ModelMatrix = Matrix4.CreateScale(Scale) * Matrix4.CreateRotationX(Rotation.X) * Matrix4.CreateRotationY(Rotation.Y) * Matrix4.CreateRotationZ(Rotation.Z) * Matrix4.CreateTranslation(Position);
+        }
+
+        public override Vector2[] GetTextureCoords()
+        {
+            return new Vector2[] { };
+        }
+    }
+}