protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
// Create program
_programId = GL.CreateProgram();
Instance.AssignPID(_programId);
// Adjust render settings
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
GL.PatchParameter(PatchParameterInt.PatchVertices, 3);
// Create and compile shaders
int vertexShader = ShaderHandler.CreateShader(@"Shaders\vertexshader.glsl", ShaderType.VertexShader);
int fragmentShader = ShaderHandler.CreateShader(@"Shaders\fragmentshader.glsl", ShaderType.FragmentShader);
_shadersList.Add(vertexShader);
_shadersList.Add(fragmentShader);
GL.UseProgram(_programId);
ShaderHandler.CompileShaders(_programId, _shadersList); // we want both shaders active at once
// Debug
string DebugInfo = GL.GetProgramInfoLog(_programId);
Logging.LogEvent(string.IsNullOrEmpty(DebugInfo) ? "Graphics success" : DebugInfo);
// Add closed event
Closed += OnExit;
}
public override void Exit()
{
foreach (int shader in _shadersList)
{
ShaderHandler.DeleteShader(shader);
}
foreach (Object3D obj in RenderObjects)
{
obj.Dispose();
}
GL.DeleteProgram(_programId);
base.Exit();
}
protected override void OnRenderFrame(FrameEventArgs e)
{
_time += e.Time;
Title = "InstantGameworks (OpenGL " + GL.GetString(StringName.Version) + ") " + System.Math.Round(1f / e.Time) + "fps";
// Adjust viewport
GL.Viewport(0, 0, Width, Height);
// Clear frame
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.ClearColor(Color.CornflowerBlue);
// Reset caps
foreach (EnableCap cap in Enum.GetValues(typeof(EnableCap)))
{
GL.Disable(cap);
}
foreach (EnableCap cap in EnableCaps)
{
GL.Enable(cap);
}
// Render frame
GL.UseProgram(_programId);
ShaderHandler.CompileShaders(_programId, _shadersList);
// Update camera
Camera.AspectRatio = (float)Width / Height;
Camera.Update();
_cameraMatrix = Camera.PerspectiveMatrix;
GL.UniformMatrix4(3, false, ref _cameraMatrix);
Matrix4 cameraPosition;
Matrix4.CreateTranslation(Camera.Position.X, Camera.Position.Y, Camera.Position.Z, out cameraPosition);
GL.UniformMatrix4(9, false, ref cameraPosition);
int dLightCount = 0;
foreach (var dLight in _directionalLights)
{
var baseLoc = GL.GetUniformLocation(_programId, "dLights[" + dLightCount++ + "].diffuseColor");
GL.Uniform4(baseLoc + 0, dLight.DiffuseColor);
GL.Uniform4(baseLoc + 1, dLight.SpecularColor);
GL.Uniform4(baseLoc + 2, dLight.AmbientColor);
GL.Uniform4(baseLoc + 3, dLight.EmitColor);
GL.Uniform1(baseLoc + 4, dLight.Intensity);
GL.Uniform3(baseLoc + 5, dLight.RelativeDirection);
GL.Uniform1(baseLoc + 6, dLight.Enabled ? 1 : 0);
}
foreach (var pLight in _pointLights)
{
var baseLoc = GL.GetUniformLocation(_programId, "pLights[" + dLightCount++ + "].diffuseColor");
GL.Uniform4(baseLoc + 0, pLight.DiffuseColor);
GL.Uniform4(baseLoc + 1, pLight.SpecularColor);
GL.Uniform4(baseLoc + 2, pLight.AmbientColor);
GL.Uniform4(baseLoc + 3, pLight.EmitColor);
GL.Uniform1(baseLoc + 4, pLight.Intensity);
GL.Uniform1(baseLoc + 5, pLight.Radius);
GL.Uniform3(baseLoc + 6, pLight.Position);
GL.Uniform1(baseLoc + 7, pLight.Enabled ? 1 : 0);
}
foreach (var renderObject in RenderObjects)
{
GL.Uniform4(5, renderObject.DiffuseColor);
GL.Uniform4(6, renderObject.SpecularColor);
GL.Uniform4(7, renderObject.AmbientColor);
GL.Uniform4(8, renderObject.EmitColor);
renderObject.Render();
}
// Render frame
GL.UseProgram(GuiHolder._pid); // use new program
ShaderHandler.CompileShaders(GuiHolder._pid, GuiHolder._shaders); // apply separate shaders to said program
GL.Disable(EnableCap.CullFace);
foreach (var guiHolder in GuiObjects)
{
guiHolder.Render(); // render
}
SwapBuffers();
base.OnRenderFrame(e);
}