protected override void Renderer_ContextCreated(RenderThread sender, ContextCreationEventArgs args)
{
Log.WriteLine("Render context created. Continuing initialization...");
Log.WriteLine("Running on OpenGL: %@", LogLevel.Message, Gl.GetString(StringName.Renderer) + Gl.GetString(StringName.Version));
Renderer.TargetWindow.KeyDown += TargetWindow_KeyDown;
Renderer.TargetWindow.KeyUp += TargetWindow_KeyUp;
CompileShaders();
LoadTextures();
Gl.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
VAO = Gl.GenVertexArray();
Gl.BindVertexArray(VAO);
CheckGlErrors("pre-texture");
Gl.ActiveTexture(TextureUnit.Texture0);
Gl.BindTexture(TextureTarget.Texture2D, fontAtlasTexture);
CheckGlErrors("post-texture");
VBO = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, VBO);
EBO = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, EBO);
CheckGlErrors("pre_va_pointer");
Gl.VertexAttribPointer(0, 2, VertexAttribPointerType.Float, false, 12 * sizeof(float), 0 * sizeof(float));
CheckGlErrors("post-va-pointer-0-set");
Gl.EnableVertexAttribArray(0);
CheckGlErrors("post-va-pointer-0-enable");
Gl.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, 12 * sizeof(float), 2 * sizeof(float));
Gl.EnableVertexAttribArray(1);
CheckGlErrors("post-va-pointer-1");
Gl.VertexAttribPointer(2, 4, VertexAttribPointerType.Float, false, 12 * sizeof(float), 4 * sizeof(float));
Gl.EnableVertexAttribArray(2);
CheckGlErrors("post-va-pointer-2");
Gl.VertexAttribPointer(3, 4, VertexAttribPointerType.Float, false, 12 * sizeof(float), 8 * sizeof(float));
Gl.EnableVertexAttribArray(3);
}
protected override void Renderer_ContextCreated(RenderThread sender, ContextCreationEventArgs args)
{
Log.WriteLine("Context created. Using: " + Gl.GetString(StringName.Renderer) + Gl.GetString(StringName.Version));
Log.WriteLine("Renderer_ContextCreated");
Renderer.TargetWindow.Resize += TargetWindow_Resize;
// Load Shaders
string vertex = File.ReadAllText("./shaders/hello.vert".Replace('/', Path.DirectorySeparatorChar));
string fragment = File.ReadAllText("./shaders/hello.frag".Replace('/', Path.DirectorySeparatorChar));
// Compile shaders
Log.WriteLine("Compiling shader 'hello'...");
shader = new ShaderProgram(vertex, fragment);
shader.Compile();
Log.WriteLine("Compiled shader index: %@", LogLevel.Message, shader.ProgramId);
// Load vertices and indices
vertices = new float[] {
0.5f, 0.5f, 0.0f, // top right
0.5f, -0.5f, 0.0f, // bottom right
-0.5f, -0.5f, 0.0f, // bottom left
-0.5f, 0.5f, 0.0f // top left
};
indices = new uint[] { // note that we start from 0!
0, 1, 3, // first Triangle
1, 2, 3 // second Triangle
};
// Setup global VAO
VAO = Gl.GenVertexArray();
Gl.BindVertexArray(VAO);
CheckGlErrors("Renderer_ContextCreated:AfterVAO");
// Setup VBO (vertices)
VBO = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, VBO);
int size = (sizeof(float) * vertices.Length); // size must be 48
Gl.BufferData(BufferTarget.ArrayBuffer, size, vertices, BufferUsageHint.StaticDraw);
CheckGlErrors("Renderer_ContextCreated:AfterBufferDataVBO");
Gl.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
CheckGlErrors("Renderer_ContextCreated:AfterVAP_VBO");
Gl.EnableVertexAttribArray(0);
CheckGlErrors("Renderer_ContextCreated:AfterVBO");
// Setup EBO (indices)
EBO = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, EBO);
size = (sizeof(float) * indices.Length); // Must be 24
Gl.BufferData(BufferTarget.ElementArrayBuffer, size, indices, BufferUsageHint.StaticDraw);
CheckGlErrors("Renderer_ContextCreated:AfterEBO");
// Unbind
Gl.BindVertexArray(0);
CheckGlErrors("Renderer_ContextCreated:End");
}
