void BuildTexture()
{
GL.GenTextures(1, out _textureId);
#if DEBUG
System.Diagnostics.Debug.WriteLine("texture_id" + _textureId);
#endif
//bind
GL.BindTexture(TextureTarget.Texture2D, _textureId);
if (_memBitmap != null)
{
GL.TexImage2D((TextureTarget2d)TextureTarget.Texture2D, 0,
(TextureComponentCount)PixelInternalFormat.Rgba, _width, _height, 0,
PixelFormat.Rgba, //
PixelType.UnsignedByte, PixelFarm.CpuBlit.MemBitmap.GetBufferPtr(_memBitmap).Ptr);
}
else
{
IntPtr bmpScan0 = _bmpBufferProvider.GetRawBufferHead();
GL.TexImage2D((TextureTarget2d)TextureTarget.Texture2D, 0,
(TextureComponentCount)PixelInternalFormat.Rgba, _width, _height, 0,
PixelFormat.Rgba,
PixelType.UnsignedByte, (IntPtr)bmpScan0);
_bmpBufferProvider.ReleaseBufferHead();
_bmpBufferProvider.NotifyUsage();
}
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
}
void BuildFromExistingBitmap()
{
GL.GenTextures(1, out _textureId);
#if DEBUG
System.Diagnostics.Debug.WriteLine("gen texture_id:" + _textureId);
#endif
//test convert from BGRA to RGBA
//bind
GL.BindTexture(TextureTarget.Texture2D, _textureId);
if (_memBitmap != null)
{
GL.TexImage2D(TextureTarget.Texture2D, 0,
PixelInternalFormat.Rgba, _width, _height, 0,
PixelFormat.Rgba,
PixelType.UnsignedByte, PixelFarm.CpuBlit.MemBitmap.GetBufferPtr(_memBitmap).Ptr);
}
else
{
IntPtr bmpScan0 = _bmpBufferProvider.GetRawBufferHead();
GL.TexImage2D(TextureTarget.Texture2D, 0,
PixelInternalFormat.Rgba, _width, _height, 0,
PixelFormat.Rgba,
PixelType.UnsignedByte, bmpScan0);
_bmpBufferProvider.ReleaseBufferHead();
#if DEBUG
_bmpBufferProvider.dbugNotifyUsage();
#endif
}
//GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
//GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
}