public static Texture2d Create(Color4 color, string description, int width = 1, int height = 1, TextureOptions textureOptions = null)
{
textureOptions = textureOptions ?? TextureOptions.Default;
var textureId = GL.GenTexture();
try
{
var data = new int[width * height];
for (int i = 0; i < width * height; i++)
{
data[i] = color.ToRgba();
}
DrawState.BindTexture(textureId);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Rgba, PixelType.UnsignedByte, data);
if (textureOptions.GenerateMipmaps)
{
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
GL.Finish();
}
DrawState.CheckError("specifying texture");
textureOptions.ApplyParameters(TextureTarget.Texture2D);
}
catch (Exception)
{
GL.DeleteTexture(textureId);
DrawState.UnbindTexture(textureId);
throw;
}
return(new Texture2d(textureId, width, height, description));
}
public static Texture2d Load(Bitmap bitmap, string description, TextureOptions textureOptions = null)
{
if (bitmap == null)
{
throw new ArgumentNullException(nameof(bitmap));
}
textureOptions = textureOptions ?? TextureOptions.Default;
var sRgb = textureOptions.Srgb && DrawState.ColorCorrected;
var textureId = GL.GenTexture();
try
{
DrawState.BindTexture(textureId);
var bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, sRgb ? PixelInternalFormat.SrgbAlpha : PixelInternalFormat.Rgba, bitmapData.Width, bitmapData.Height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bitmapData.Scan0);
if (textureOptions.GenerateMipmaps)
{
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
GL.Finish();
bitmap.UnlockBits(bitmapData);
DrawState.CheckError("specifying texture");
textureOptions.ApplyParameters(TextureTarget.Texture2D);
}
catch (Exception)
{
GL.DeleteTexture(textureId);
DrawState.UnbindTexture(textureId);
throw;
}
return(new Texture2d(textureId, bitmap.Width, bitmap.Height, description));
}
public void Flush(bool canBuffer = false)
{
if (spritesInBatch == 0)
{
return;
}
if (currentTexture == null)
{
throw new InvalidOperationException("currentTexture is null");
}
// When the previous flush was bufferable, draw state should stay the same.
if (!lastFlushWasBuffered)
{
var combinedMatrix = transformMatrix * Camera.ProjectionView;
var samplerUnit = CustomTextureBind != null?CustomTextureBind(currentTexture) : DrawState.BindTexture(currentTexture);
if (currentSamplerUnit != samplerUnit)
{
currentSamplerUnit = samplerUnit;
GL.Uniform1(shader.GetUniformLocation(TextureUniformName), currentSamplerUnit);
}
GL.UniformMatrix4(shader.GetUniformLocation(CombinedMatrixUniformName), false, ref combinedMatrix);
flushAction?.Invoke();
}
primitiveStreamer.Render(PrimitiveType.Quads, spriteArray, spritesInBatch, spritesInBatch * VertexPerSprite, canBuffer);
currentLargestBatch += spritesInBatch;
if (!canBuffer)
{
LargestBatch = Math.Max(LargestBatch, currentLargestBatch);
currentLargestBatch = 0;
}
spritesInBatch = 0;
FlushedBufferCount++;
lastFlushWasBuffered = canBuffer;
}
