private void MeshControl_Paint(object sender, PaintEventArgs e)
{
if (!Loaded)
{
return;
}
var deltaTime = GetElapsedTime();
// Tick camera
ActiveCamera.Tick(deltaTime);
// Update labels
cameraLabel.Text = $"{ActiveCamera.Location.X}, {ActiveCamera.Location.Y}, {ActiveCamera.Location.Z}\n(yaw: {ActiveCamera.Yaw} pitch: {ActiveCamera.Pitch})";
fpsLabel.Text = $"FPS: {Math.Round(1f / deltaTime)}";
//Animate light position
var lightPos = ActiveCamera.Location;
var cameraLeft = new Vector3((float)Math.Cos(ActiveCamera.Yaw + MathHelper.PiOver2), (float)Math.Sin(ActiveCamera.Yaw + MathHelper.PiOver2), 0);
lightPos += cameraLeft * 200 * (float)Math.Sin(PreciseTimer.Elapsed.TotalSeconds * 2);
// Get animation matrices
var animationMatrices = new float[Skeleton.Bones.Length * 16];
for (var i = 0; i < Skeleton.Bones.Length; i++)
{
// Default to identity matrices
animationMatrices[i * 16] = 1.0f;
animationMatrices[(i * 16) + 5] = 1.0f;
animationMatrices[(i * 16) + 10] = 1.0f;
animationMatrices[(i * 16) + 15] = 1.0f;
}
if (Animations.Count > 0)
{
animationMatrices = ActiveAnimation.GetAnimationMatricesAsArray((float)PreciseTimer.Elapsed.TotalSeconds, Skeleton);
//Update animation texture
GL.BindTexture(TextureTarget.Texture2D, AnimationTexture);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba32f, 4, Skeleton.Bones.Length, 0, PixelFormat.Rgba, PixelType.Float, animationMatrices);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
var prevShader = -1;
var prevMaterial = string.Empty;
//var sw = System.Diagnostics.Stopwatch.StartNew();
foreach (var obj in MeshesToRender)
{
var objChanged = true;
foreach (var call in obj.DrawCalls)
{
int uniformLocation;
if (call.Shader.Program != prevShader)
{
objChanged = true;
prevShader = call.Shader.Program;
GL.UseProgram(call.Shader.Program);
uniformLocation = call.Shader.GetUniformLocation("vLightPosition");
GL.Uniform3(uniformLocation, lightPos);
uniformLocation = call.Shader.GetUniformLocation("vEyePosition");
GL.Uniform3(uniformLocation, ActiveCamera.Location);
uniformLocation = call.Shader.GetUniformLocation("projection");
var matrix = ActiveCamera.ProjectionMatrix;
GL.UniformMatrix4(uniformLocation, false, ref matrix);
uniformLocation = call.Shader.GetUniformLocation("modelview");
matrix = ActiveCamera.CameraViewMatrix;
GL.UniformMatrix4(uniformLocation, false, ref matrix);
uniformLocation = call.Shader.GetUniformLocation("bAnimated");
if (uniformLocation != -1)
{
GL.Uniform1(uniformLocation, Animations.Count == 0 ? 0.0f : 1.0f);
}
//Push animation texture to the shader (if it supports it)
if (Animations.Count > 0)
{
uniformLocation = call.Shader.GetUniformLocation("animationTexture");
if (uniformLocation != -1)
{
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, AnimationTexture);
GL.Uniform1(uniformLocation, 0);
}
uniformLocation = call.Shader.GetUniformLocation("fNumBones");
if (uniformLocation != -1)
{
var v = (float)Math.Max(1, Skeleton.Bones.Length - 1);
GL.Uniform1(uniformLocation, v);
}
}
}
// Stupidly hacky
if (objChanged)
{
objChanged = false;
prevMaterial = string.Empty;
var transform = obj.Transform;
uniformLocation = call.Shader.GetUniformLocation("transform");
GL.UniformMatrix4(uniformLocation, false, ref transform);
uniformLocation = call.Shader.GetUniformLocation("m_vTintColorSceneObject");
if (uniformLocation > -1)
{
GL.Uniform4(uniformLocation, obj.TintColor);
}
}
GL.BindVertexArray(call.VertexArrayObject);
uniformLocation = call.Shader.GetUniformLocation("m_vTintColorDrawCall");
if (uniformLocation > -1)
{
GL.Uniform3(uniformLocation, call.TintColor);
}
if (call.Material.Parameters.Name != prevMaterial)
{
prevMaterial = call.Material.Parameters.Name;
//Start at 1, texture unit 0 is reserved for the animation texture
var textureUnit = 1;
foreach (var texture in call.Material.Textures)
{
uniformLocation = call.Shader.GetUniformLocation(texture.Key);
if (uniformLocation > -1)
{
GL.ActiveTexture(TextureUnit.Texture0 + textureUnit);
GL.BindTexture(TextureTarget.Texture2D, texture.Value);
GL.Uniform1(uniformLocation, textureUnit);
textureUnit++;
}
}
foreach (var param in call.Material.Parameters.FloatParams)
{
uniformLocation = call.Shader.GetUniformLocation(param.Key);
if (uniformLocation > -1)
{
GL.Uniform1(uniformLocation, param.Value);
}
}
foreach (var param in call.Material.Parameters.VectorParams)
{
uniformLocation = call.Shader.GetUniformLocation(param.Key);
if (uniformLocation > -1)
{
GL.Uniform4(uniformLocation, new Vector4(param.Value.X, param.Value.Y, param.Value.Z, param.Value.W));
}
}
var alpha = 0f;
if (call.Material.Parameters.IntParams.ContainsKey("F_ALPHA_TEST") &&
call.Material.Parameters.IntParams["F_ALPHA_TEST"] == 1 &&
call.Material.Parameters.FloatParams.ContainsKey("g_flAlphaTestReference"))
{
alpha = call.Material.Parameters.FloatParams["g_flAlphaTestReference"];
}
var alphaReference = call.Shader.GetUniformLocation("g_flAlphaTestReference");
GL.Uniform1(alphaReference, alpha);
/*
* if (call.Material.IntParams.ContainsKey("F_TRANSLUCENT") && call.Material.IntParams["F_TRANSLUCENT"] == 1)
* {
* GL.Enable(EnableCap.Blend);
* GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
* }
* else
* {
* GL.Disable(EnableCap.Blend);
* }
*/
}
GL.DrawElements(call.PrimitiveType, call.IndexCount, call.IndiceType, (IntPtr)call.StartIndex);
}
}
//sw.Stop(); Console.WriteLine("{0} {1}", sw.Elapsed, sw.ElapsedTicks);
// Only needed when debugging if something doesnt work, causes high CPU
/*
* var error = GL.GetError();
*
* if (error != ErrorCode.NoError)
* {
* Console.WriteLine(error);
* }
*/
#if DEBUG
Debug.Reset();
//DebugDrawSkeleton();
Debug.Draw(ActiveCamera, false);
#endif
meshControl.SwapBuffers();
meshControl.Invalidate();
}
private void MeshControl_Paint(object sender, PaintEventArgs e)
{
if (!Loaded)
{
return;
}
ActiveCamera.Tick();
//Animate light position
var lightPos = ActiveCamera.Location;
var cameraLeft = new Vector3((float)Math.Cos(ActiveCamera.Yaw + MathHelper.PiOver2), (float)Math.Sin(ActiveCamera.Yaw + MathHelper.PiOver2), 0);
lightPos += cameraLeft * 200 * (float)Math.Sin(Environment.TickCount / 500.0);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
foreach (var call in drawCalls)
{
//Bind shader
GL.UseProgram(call.Shader);
//Set shader uniforms
var transformLoc = GL.GetUniformLocation(call.Shader, "projection");
GL.UniformMatrix4(transformLoc, false, ref ActiveCamera.ProjectionMatrix);
var modelviewLoc = GL.GetUniformLocation(call.Shader, "modelview");
GL.UniformMatrix4(modelviewLoc, false, ref ActiveCamera.CameraViewMatrix);
var lightPosAttrib = GL.GetUniformLocation(call.Shader, "vLightPosition");
GL.Uniform3(lightPosAttrib, lightPos);
var eyePosAttrib = GL.GetUniformLocation(call.Shader, "vEyePosition");
GL.Uniform3(eyePosAttrib, ActiveCamera.Location);
//Bind VAO
GL.BindVertexArray(call.VertexArrayObject);
//Set shader texture samplers
//Color texture
TryToBindTexture(call.Shader, 0, "colorTexture", call.MaterialID);
if (call.Material.TextureIDs.ContainsKey("g_tNormal"))
{
//Bind normal texture
TryToBindTexture(call.Shader, 1, "normalTexture", call.Material.TextureIDs["g_tNormal"]);
}
if (call.Material.TextureIDs.ContainsKey("g_tMasks1"))
{
//Bind mask 1 texture
TryToBindTexture(call.Shader, 2, "mask1Texture", call.Material.TextureIDs["g_tMasks1"]);
}
if (call.Material.TextureIDs.ContainsKey("g_tMasks2"))
{
//Bind mask 2 texture
TryToBindTexture(call.Shader, 3, "mask2Texture", call.Material.TextureIDs["g_tMasks2"]);
}
if (call.Material.TextureIDs.ContainsKey("g_tDiffuseWarp"))
{
//Bind diffuse warp texture
TryToBindTexture(call.Shader, 4, "diffuseWarpTexture", call.Material.TextureIDs["g_tDiffuseWarp"]);
}
GL.DrawElements(call.PrimitiveType, (int)call.IndexCount, call.IndiceType, IntPtr.Zero);
}
// Only needed when debugging if something doesnt work, causes high CPU
/*
* var error = GL.GetError();
*
* if (error != ErrorCode.NoError)
* {
* Console.WriteLine(error);
* }
*/
meshControl.SwapBuffers();
meshControl.Invalidate();
}