public void DrawQuad(int texture, GLVertex[] vertices)
{
texture = getTexture(texture);
_graphics.BindTexture2D(texture);
_graphics.BufferData(vertices, GLVertex.Size, BufferType.ArrayBuffer);
_graphics.InitPointers(GLVertex.Size);
_graphics.BufferData(_quadIndices, sizeof(short), BufferType.ElementArrayBuffer);
_graphics.SetShaderAppVars();
_graphics.DrawElements(PrimitiveMode.Triangles, 6, _quadIndices);
}
public bool Begin()
{
_graphics.BindTexture2D(Texture.ID);
_graphics.BindFrameBuffer(_fbo);
_graphics.FrameBufferTexture2D(Texture.ID);
_graphics.BindTexture2D(0);
if (!_graphics.DrawFrameBuffer())
{
return(false);
}
_graphics.Viewport(0, 0, _width, _height);
return(true);
}
//https://github.com/xamarin/mobile-samples/blob/master/TexturedCubeES30/TexturedCubeiOS/EAGLView.cs
public void LoadTexture(int?textureToBind)
{
if (textureToBind != null)
{
_graphics.BindTexture2D(textureToBind.Value);
}
var width = _cgImage.Width;
var height = _cgImage.Height;
using (CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB())
{
byte[] imageData = new byte[height * width * 4];
CGContext context = new CGBitmapContext(imageData, width, height, 8, 4 * width, colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
using (context)
{
context.TranslateCTM(0, height);
context.ScaleCTM(1, -1);
context.ClearRect(new CGRect(0, 0, width, height));
context.DrawImage(new CGRect(0, 0, width, height), _cgImage);
unsafe
{
fixed(byte *p = imageData)
{
IntPtr ptr = (IntPtr)p;
_graphics.TexImage2D(Width, Height, ptr);
}
}
}
}
}
private void applyConfigOnUiThread()
{
_graphics.BindTexture2D(ID);
_graphics.SetTextureMinFilter(_config.ScaleDownFilter);
_graphics.SetTextureMagFilter(_config.ScaleUpFilter);
_graphics.SetTextureWrapS(_config.WrapX);
_graphics.SetTextureWrapT(_config.WrapY);
}
private int createTexture()
{
int text_texture = _graphics.GenTexture();
_graphics.BindTexture2D(text_texture);
_graphics.SetTextureMagFilter(ScaleUpFilters.Linear);
_graphics.SetTextureMinFilter(ScaleDownFilters.Linear);
//GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, 1024, 1024, 0,
// OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, IntPtr.Zero); // just allocate memory, so we can update efficiently using TexSubImage2D
return(text_texture);
}
public void LoadTexture(int?textureToBind)
{
var scan0 = _bitmap.LockPixels();
if (textureToBind != null)
{
_graphics.BindTexture2D(textureToBind.Value);
}
_graphics.TexImage2D(Width, Height, scan0);
_bitmap.UnlockPixels();
}
private void bindTextures()
{
int i = 0;
foreach (var pair in _textures)
{
_graphics.Uniform1(pair.Key, i);
_graphics.ActiveTexture(i);
_graphics.BindTexture2D(pair.Value);
i++;
}
_graphics.ActiveTexture(0);
}
public void LoadTexture(int?textureToBind)
{
BitmapData data = _bitmap.LockBits(new System.Drawing.Rectangle(0, 0, Width, Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
if (textureToBind != null)
{
_graphics.BindTexture2D(textureToBind.Value);
}
_graphics.TexImage2D(Width, Height, data.Scan0);
_bitmap.UnlockBits(data);
}
