internal static void UpdateDeltaTime()
{
float currTimePick_ms = Watch.ElapsedMilliseconds;
float realTimeElapsed_ms;
if (lastRealTimeMeasurement_ms > 0)
{
realTimeElapsed_ms = (currTimePick_ms - lastRealTimeMeasurement_ms);
}
else
{
realTimeElapsed_ms = GLWindow.CurrentWindow._vSync ? 16.66667f : smoothedDeltaRealTime_ms; // just the first time
}
movAverageDeltaTime_ms = (realTimeElapsed_ms + movAverageDeltaTime_ms * (movAveragePeriod - 1)) / movAveragePeriod;
smoothedDeltaRealTime_ms = smoothedDeltaRealTime_ms + (movAverageDeltaTime_ms - smoothedDeltaRealTime_ms) * smoothFactor;
deltaTimeFactor = HelperGeneral.Clamp(smoothedDeltaRealTime_ms / TargetFrameTime, 0.00001f, 10);
lastRealTimeMeasurement_ms = currTimePick_ms;
}
internal static void SaveTextureToBitmap16(int texId, string name = null)
{
GL.Flush();
GL.Finish();
GL.BindTexture(TextureTarget.Texture2D, texId);
GL.GetTextureLevelParameter(texId, 0, GetTextureParameter.TextureWidth, out int width);
GL.GetTextureLevelParameter(texId, 0, GetTextureParameter.TextureHeight, out int height);
Bitmap b = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
float[] data = new float[width * height * 4];
GL.GetTexImage(TextureTarget.Texture2D, 0, OpenTK.Graphics.OpenGL4.PixelFormat.Bgra, PixelType.Float, data);
GL.BindTexture(TextureTarget.Texture2D, 0);
int x = 0, y = height - 1;
for (int i = 0; i < data.Length; i += 4)
{
float rd = HelperGeneral.Clamp(data[i] * byte.MaxValue, 0, 255);
float gn = HelperGeneral.Clamp(data[i + 1] * byte.MaxValue, 0, 255);
float bl = HelperGeneral.Clamp(data[i + 2] * byte.MaxValue, 0, 255);
float al = HelperGeneral.Clamp(data[i + 3] * byte.MaxValue, 0, 255);
byte red = (byte)rd;
byte green = (byte)gn;
byte blue = (byte)bl;
byte alpha = (byte)al;
b.SetPixel(x, y, Color.FromArgb(alpha, red, green, blue));
int prevX = x;
x = (x + 1) % width;
if (prevX > 0 && x == 0)
{
y--;
}
}
b.Save(name == null ? "texture2d_16_tonemapped_rgba.png" : name, ImageFormat.Png);
b.Dispose();
}
