/// <summary>
/// Sets the texture's data.
/// </summary>
private void SetDataInternal <T>(Int32 level, Int32 left, Int32 top, Int32 right, Int32 bottom, Int32 front, Int32 back, T[] data, Int32 startIndex, Int32 elementCount) where T : struct
{
var elementSizeInBytes = Marshal.SizeOf(typeof(T));
var width = right - left;
var height = bottom - top;
var depth = back - front;
var pixelSizeInBytes = (format == gl.GL_RGB || format == gl.GL_BGR) ? 3 : 4;
if (pixelSizeInBytes * width * height * depth != elementSizeInBytes * elementCount)
{
throw new ArgumentException(UltravioletStrings.BufferIsWrongSize);
}
Ultraviolet.QueueWorkItem(state =>
{
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
using (OpenGLState.ScopedBindTexture3D(OpenGLName))
{
var pData = dataHandle.AddrOfPinnedObject() + (startIndex * elementSizeInBytes);
gl.TextureSubImage3D(OpenGLName, gl.GL_TEXTURE_3D, level, left, top, front,
right - left, bottom - top, back - front, format, type, (void *)pData);
gl.ThrowIfError();
}
}
finally { dataHandle.Free(); }
}).Wait();
}
/// <summary>
/// Processes a resize operation for this texture.
/// </summary>
private void ProcessResize()
{
using (OpenGLState.ScopedBindTexture3D(texture, true))
{
gl.TexImage3D(gl.GL_TEXTURE_3D, 0, (int)internalformat,
width, height, depth, 0, format, type, null);
}
}
/// <summary>
/// Uploads texture data to the graphics device.
/// </summary>
private void Upload(Int32 level, Int32 left, Int32 top, Int32 right, Int32 bottom, Int32 front, Int32 back, IntPtr data, Int32 offsetInBytes, Int32 sizeInBytes)
{
using (OpenGLState.ScopedBindTexture3D(OpenGLName))
{
var pData = data + offsetInBytes;
gl.TextureSubImage3D(OpenGLName, gl.GL_TEXTURE_3D, level, left, top, front,
right - left, bottom - top, back - front, format, type, (void *)pData);
gl.ThrowIfError();
}
}
/// <summary>
/// Creates the underlying native OpenGL texture with the specified format and data.
/// </summary>
private void CreateNativeTexture(UltravioletContext uv, UInt32 internalformat, Int32 width, Int32 height, Int32 depth,
UInt32 format, UInt32 type, void *pixels, Boolean immutable)
{
if (uv.IsRunningInServiceMode)
{
throw new NotSupportedException(UltravioletStrings.NotSupportedInServiceMode);
}
this.width = width;
this.height = height;
this.depth = depth;
this.internalformat = internalformat;
this.format = format;
this.type = type;
this.immutable = immutable;
this.srgbEncoded =
internalformat == gl.GL_SRGB ||
internalformat == gl.GL_SRGB_ALPHA ||
internalformat == gl.GL_SRGB8 ||
internalformat == gl.GL_SRGB8_ALPHA8;
this.texture = uv.QueueWorkItem(state =>
{
uint glname;
using (OpenGLState.ScopedCreateTexture3D(out glname))
{
if (gl.IsTextureMaxLevelSupported)
{
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAX_LEVEL, 0);
gl.ThrowIfError();
}
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MIN_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAG_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_R, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_S, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_T, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
if (immutable)
{
if (gl.IsTextureStorageAvailable)
{
gl.TextureStorage3D(glname, gl.GL_TEXTURE_3D, 1, internalformat, width, height, depth);
gl.ThrowIfError();
if (pixels != null)
{
gl.TextureSubImage3D(glname, gl.GL_TEXTURE_3D, 0, 0, 0, 0, width, height, depth, format, type, pixels);
gl.ThrowIfError();
}
}
else
{
gl.TextureImage3D(glname, gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
}
if (!immutable)
{
using (OpenGLState.ScopedBindTexture3D(glname, true))
{
gl.TexImage3D(gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
return(glname);
}).Result;
}
