private void PlatformGetData <T>(int offsetInBytes, T[] data, int startIndex, int elementCount) where T : struct
{
#if GLES
// Buffers are write-only on OpenGL ES 1.1 and 2.0. See the GL_OES_mapbuffer extension for more information.
// http://www.khronos.org/registry/gles/extensions/OES/OES_mapbuffer.txt
throw new NotSupportedException("Index buffers are write-only on OpenGL ES platforms");
#endif
#if !GLES
if (Threading.IsOnUIThread())
{
GetBufferData(offsetInBytes, data, startIndex, elementCount);
}
else
{
Threading.BlockOnUIThread(() => GetBufferData(offsetInBytes, data, startIndex, elementCount));
}
#endif
}
private void PlatformSetData <T>(CubeMapFace face, int level, IntPtr dataPtr, int xOffset, int yOffset, int width, int height)
{
Threading.BlockOnUIThread(() =>
{
GL.BindTexture(TextureTarget.TextureCubeMap, this.glTexture);
GraphicsExtensions.CheckGLError();
TextureTarget target = GetGLCubeFace(face);
if (glFormat == (PixelFormat)GLPixelFormat.CompressedTextureFormats)
{
throw new NotImplementedException();
}
else
{
GL.TexSubImage2D(target, level, xOffset, yOffset, width, height, glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
}
});
}
private void PlatformSetData <T>(int level,
int left, int top, int right, int bottom, int front, int back,
T[] data, int startIndex, int elementCount, int width, int height, int depth)
{
#if GLES
throw new NotSupportedException("OpenGL ES 2.0 doesn't support 3D textures.");
#else
Threading.BlockOnUIThread(() =>
{
var elementSizeInByte = Marshal.SizeOf(typeof(T));
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
var dataPtr = (IntPtr)(dataHandle.AddrOfPinnedObject().ToInt64() + startIndex * elementSizeInByte);
GL.BindTexture(glTarget, glTexture);
GraphicsExtensions.CheckGLError();
GL.TexSubImage3D(glTarget, level, left, top, front, width, height, depth, glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
dataHandle.Free();
});
#endif
}
private static Texture2D PlatformFromStream(GraphicsDevice graphicsDevice, Bitmap image)
{
var width = image.Width;
var height = image.Height;
int[] pixels = new int[width * height];
if ((width != image.Width) || (height != image.Height))
{
using (Bitmap imagePadded = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888))
{
Canvas canvas = new Canvas(imagePadded);
canvas.DrawARGB(0, 0, 0, 0);
canvas.DrawBitmap(image, 0, 0, null);
imagePadded.GetPixels(pixels, 0, width, 0, 0, width, height);
imagePadded.Recycle();
}
}
else
{
image.GetPixels(pixels, 0, width, 0, 0, width, height);
}
image.Recycle();
// Convert from ARGB to ABGR
ConvertToABGR(height, width, pixels);
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, width, height, false, SurfaceFormat.Color);
texture.SetData <int>(pixels);
});
return(texture);
}
private void PlatformConstruct(int width, int height, bool mipmap, SurfaceFormat format, SurfaceType type, bool shared)
{
this.glTarget = TextureTarget.Texture2D;
Threading.BlockOnUIThread(() =>
{
// Store the current bound texture.
var prevTexture = GraphicsExtensions.GetBoundTexture2D();
GenerateGLTextureIfRequired();
format.GetGLFormat(GraphicsDevice, out glInternalFormat, out glFormat, out glType);
if (glFormat == (PixelFormat)GLPixelFormat.CompressedTextureFormats)
{
var imageSize = 0;
switch (format)
{
case SurfaceFormat.RgbPvrtc2Bpp:
case SurfaceFormat.RgbaPvrtc2Bpp:
imageSize = (Math.Max(this.width, 16) * Math.Max(this.height, 8) * 2 + 7) / 8;
break;
case SurfaceFormat.RgbPvrtc4Bpp:
case SurfaceFormat.RgbaPvrtc4Bpp:
imageSize = (Math.Max(this.width, 8) * Math.Max(this.height, 8) * 4 + 7) / 8;
break;
case SurfaceFormat.Dxt1:
case SurfaceFormat.Dxt1a:
case SurfaceFormat.Dxt1SRgb:
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt3SRgb:
case SurfaceFormat.Dxt5:
case SurfaceFormat.Dxt5SRgb:
case SurfaceFormat.RgbEtc1:
case SurfaceFormat.RgbaAtcExplicitAlpha:
case SurfaceFormat.RgbaAtcInterpolatedAlpha:
imageSize = ((this.width + 3) / 4) * ((this.height + 3) / 4) * GraphicsExtensions.GetSize(format);
break;
default:
throw new NotSupportedException();
}
GL.CompressedTexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
imageSize, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
glFormat, glType, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
// Restore the bound texture.
GL.BindTexture(TextureTarget.Texture2D, prevTexture);
GraphicsExtensions.CheckGLError();
});
}
private void PlatformSetData <T>(int level, int arraySlice, Rectangle?rect, T[] data, int startIndex, int elementCount) where T : struct
{
Threading.BlockOnUIThread(() =>
{
var elementSizeInByte = Marshal.SizeOf(typeof(T));
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
// Use try..finally to make sure dataHandle is freed in case of an error
try
{
var startBytes = startIndex * elementSizeInByte;
var dataPtr = (IntPtr)(dataHandle.AddrOfPinnedObject().ToInt64() + startBytes);
int x, y, w, h;
if (rect.HasValue)
{
x = rect.Value.X;
y = rect.Value.Y;
w = rect.Value.Width;
h = rect.Value.Height;
}
else
{
x = 0;
y = 0;
w = Math.Max(width >> level, 1);
h = Math.Max(height >> level, 1);
// For DXT textures the width and height of each level is a multiple of 4.
// OpenGL only: The last two mip levels require the width and height to be
// passed as 2x2 and 1x1, but there needs to be enough data passed to occupy
// a 4x4 block.
// Ref: http://www.mentby.com/Group/mac-opengl/issue-with-dxt-mipmapped-textures.html
if (_format == SurfaceFormat.Dxt1 ||
_format == SurfaceFormat.Dxt1a ||
_format == SurfaceFormat.Dxt3 ||
_format == SurfaceFormat.Dxt5 ||
_format == SurfaceFormat.RgbaAtcExplicitAlpha ||
_format == SurfaceFormat.RgbaAtcInterpolatedAlpha ||
_format == SurfaceFormat.RgbPvrtc2Bpp ||
_format == SurfaceFormat.RgbPvrtc4Bpp ||
_format == SurfaceFormat.RgbaPvrtc2Bpp ||
_format == SurfaceFormat.RgbaPvrtc4Bpp ||
_format == SurfaceFormat.RgbEtc1
)
{
if (w > 4)
{
w = (w + 3) & ~3;
}
if (h > 4)
{
h = (h + 3) & ~3;
}
}
}
// Store the current bound texture.
var prevTexture = GraphicsExtensions.GetBoundTexture2D();
GenerateGLTextureIfRequired();
GL.BindTexture(TextureTarget.Texture2D, this.glTexture);
GraphicsExtensions.CheckGLError();
if (glFormat == (PixelFormat)GLPixelFormat.CompressedTextureFormats)
{
if (rect.HasValue)
{
GL.CompressedTexSubImage2D(TextureTarget.Texture2D, level, x, y, w, h, glFormat, elementCount - startBytes, dataPtr);
GraphicsExtensions.CheckGLError();
}
else
{
GL.CompressedTexImage2D(TextureTarget.Texture2D, level, glInternalFormat, w, h, 0, elementCount - startBytes, dataPtr);
GraphicsExtensions.CheckGLError();
}
}
else
{
// Set pixel alignment to match texel size in bytes
GL.PixelStore(PixelStoreParameter.UnpackAlignment, GraphicsExtensions.GetSize(this.Format));
if (rect.HasValue)
{
GL.TexSubImage2D(TextureTarget.Texture2D, level,
x, y, w, h,
glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, level,
glInternalFormat,
w, h, 0, glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
}
// Return to default pixel alignment
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 4);
}
#if !ANDROID
GL.Finish();
GraphicsExtensions.CheckGLError();
#endif
// Restore the bound texture.
GL.BindTexture(TextureTarget.Texture2D, prevTexture);
GraphicsExtensions.CheckGLError();
}
finally
{
dataHandle.Free();
}
#if !ANDROID
// Required to make sure that any texture uploads on a thread are completed
// before the main thread tries to use the texture.
GL.Finish();
#endif
});
}
private void PlatformConstruct(IndexElementSize indexElementSize, int indexCount)
{
Threading.BlockOnUIThread(GenerateIfRequired);
}
private void PlatformConstruct()
{
Threading.BlockOnUIThread(GenerateIfRequired);
}