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[] {
0.0f, 0.5f, 0.0f, // top
0.5f, -0.5f, 0.0f, // bottom right
-0.5f, -0.5f, 0.0f, // bottom left
};
// 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 36
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");
// Unbind
Gl.BindVertexArray(0);
CheckGlErrors("Renderer_ContextCreated:End");
}
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_Draw(RenderThread sender, FrameStageEventArgs args)
{
Log.WriteLine("Renderer_Draw(%@)", LogLevel.Message, args.CurrentTime.FrameIndex);
Gl.BindVertexArray(VAO);
CheckGlErrors("Renderer_Draw:BindVAO");
Gl.ClearColor(0.2f, 0.3f, 0.3f, 1.0f);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
CheckGlErrors("Renderer_Draw:Clear");
Gl.UseProgram(shader.ProgramId);
CheckGlErrors("Renderer_Draw:UseProgram");
Gl.DrawElements(PrimitiveType.Triangles, 6, DrawElementsType.UnsignedInt, 0);
CheckGlErrors("Renderer_Draw:DrawElements");
}
protected override void Renderer_Draw(RenderThread sender, FrameStageEventArgs args)
{
if (!sender.IsMainThread() && !sender.Asynchronous)
{
throw new InvalidOperationException("Draw operation initiated from secondary thread when supposed to run in Sync mode.");
}
float cellX = sender.InternalResolution.Width / (float)ConsoleSize.Width;
float cellY = sender.InternalResolution.Height / (float)ConsoleSize.Height;
List <float> vertices = new List <float>(4096);
List <uint> indices = new List <uint>(4096);
float[] db = ColorToFloatArray(DefaultBackColor);
float[] df = ColorToFloatArray(DefaultForeColor);
int vertexCount = 0;
for (int xi = 0; xi < ConsoleSize.Width; xi++)
{
float x = xi * cellX;
for (int yi = 0; yi < ConsoleSize.Height; yi++)
{
RenderGlyph glyphData = GetGlyph(xi, yi);
if (ShowCursor && xi == Cursor.X && yi == Cursor.Y && glyphData == null)
{
int val = (int)((args.CurrentTime.TotalRuntime / 1000.0f) / BlinkInterval);
if (val % 2 == 0 || BlinkInterval == 0)
{
glyphData = new RenderGlyph('_');
}
}
float y = yi * cellY;
Rectangle texRec = Rectangle.Empty;
int glyphId = (int)(glyphData?.Glyph ?? ' ');
if (fontAtlas.ContainsId(glyphId))
{
texRec = fontAtlas.GetPointerById(glyphId).Bounds;
}
else if (fontAtlas.ContainsId(0x558))
{
texRec = fontAtlas.GetPointerById(0x558).Bounds;
}
else
{
texRec = fontAtlas.GetPointerById((int)'?').Bounds;
}
float[] b = glyphData == null || !glyphData.Background.HasValue ? db : ColorToFloatArray(glyphData.Background.Value);
float[] f = glyphData == null || !glyphData.Foreground.HasValue ? df : ColorToFloatArray(glyphData.Foreground.Value);
int qi = vertexCount;
vertices.AddRange(new float[] { // Add vertices
x, y, // 0,0 (A)
texRec.X, texRec.Y, // Texture X,Y
b[0], b[1], b[2], b[3], // Back
f[0], f[1], f[2], f[3], // Fore
x + cellX, y, // 1,0 (B)
texRec.Right, texRec.Y, // Texture X,Y
b[0], b[1], b[2], b[3], // Back
f[0], f[1], f[2], f[3], // Fore
x + cellX, y + cellY, // 1,1 (C)
texRec.Right, texRec.Bottom, // Texture X,Y
b[0], b[1], b[2], b[3], // Back
f[0], f[1], f[2], f[3], // Fore
x, y + cellY, //0,1 (D)
texRec.X, texRec.Bottom, // Texture X,Y
b[0], b[1], b[2], b[3], // Back
f[0], f[1], f[2], f[3], // Fore
});
indices.AddRange(new uint[]
{
(uint)(qi + 1), // B
(uint)(qi + 3), // D
(uint)(qi), // A
(uint)(qi + 1), // B
(uint)(qi + 2), // C
(uint)(qi + 3), // D
});
vertexCount += 4;
}
}
Gl.BindVertexArray(VAO);
Gl.BindBuffer(BufferTarget.ArrayBuffer, VBO);
float[] fvertices = vertices.ToArray();
vertices.Clear();
uint[] iindices = indices.ToArray();
indices.Clear();
CheckGlErrors("pre-vab");
GCHandle buffAddress = GCHandle.Alloc(fvertices, GCHandleType.Pinned);
Gl.BufferData(BufferTarget.ArrayBuffer, fvertices.Length * sizeof(float), buffAddress.AddrOfPinnedObject(), BufferUsageHint.StreamDraw);
buffAddress.Free();
CheckGlErrors("pre-eab");
buffAddress = GCHandle.Alloc(iindices, GCHandleType.Pinned);
Gl.BufferData(BufferTarget.ElementArrayBuffer, iindices.Length * sizeof(float), buffAddress.AddrOfPinnedObject(), BufferUsageHint.StreamDraw);
buffAddress.Free();
CheckGlErrors("predraw");
Gl.DrawElements(BeginMode.Triangles, iindices.Length, DrawElementsType.UnsignedInt, 0);
CheckGlErrors("final");
Gl.BindVertexArray(0);
CheckGlErrors("unbind");
}
