i've been using this wonderful library for low impact screen recording software however im at a point where i need to use a DirectX Scale Effect to scale the image down with anisotropic filtering.
I can create the effect just fine and set up most of its parameters, however im not able to set the most important one for me scaleEffect.SetValue((int)ScaleProperties.InterpolationMode, (int)SharpDX.Direct2D1.ScaleInterpolationMode.Anisotropic);
As soon as the program runs it crashes at that line with an invalid parameter exception.
I've searched and couldnt find anything wrong with the code, but then again i have almost 0 experience with anything Direct2D.
Here is the full code for that specific effect for reference:
SharpDX.Direct2D1.Effect scaleEffect = new D2D.Effect(textureDc, D2D.Effect.Scale);
scaleEffect.Cached = true;
scaleEffect.SetInput(0, frameBitmap, false);
var centerPoint = new SharpDX.Vector2(0, 0);
var newSize = new SharpDX.Vector2(0.2f, 0.2f);
scaleEffect.SetValue((int)ScaleProperties.CenterPoint, centerPoint);
scaleEffect.SetValue((int)ScaleProperties.Scale, newSize);
//Crashes Here: scaleEffect.SetValue((int)ScaleProperties.InterpolationMode, (int)SharpDX.Direct2D1.ScaleInterpolationMode.Anisotropic);
Error Message: SharpDX.SharpDXException: 'HRESULT: [0x80070057], Module: [General], ApiCode: [E_INVALIDARG/Invalid Arguments], Message: The parameter is incorrect.'
textureDc.BeginDraw();
textureDc.DrawImage(scaleEffect, InterpolationMode.Anisotropic);
textureDc.EndDraw();
Thank you very much in advance for any help!
UPDATE:
As per #Simon Mourier comment, the solution to avoid this bug somewhere in the SharpDX API, is to use the SharpDX.Direct2D1.Effects.Scale instead.
This way, i can confirm the InterpolationMode does no longer crash and works as intended!
Here is the new, working code for anyone running into the same issue.
SharpDX.Direct2D1.Effects.Scale scaleClass = new D2D.Effects.Scale(textureDc);
scaleClass.SetInput(0, frameBitmap,false);
scaleClass.Cached = true;
var centerPoint = new SharpDX.Vector2(0, 0);
var newSize = new SharpDX.Vector2(0.2f, 0.2f);
scaleClass.CenterPoint = centerPoint;
scaleClass.ScaleAmount = newSize;
scaleClass.InterpolationMode = InterpolationMode.Anisotropic;
textureDc.BeginDraw();
textureDc.DrawImage(scaleClass);
textureDc.EndDraw();
PS: For anyone wondering about casting the value to uint instead using the first method, it returns the following error:
(Argument1 cannot convert from uint to int)
So it semms that there might be some underlying bug in this specific scenario.
One solution is to use the SharpDX.Direct2D1.Effects.Scale directly which is a wrapper over the Effect class and comes with an InterpolationMode property.
Related
Today I updated to Xamarin.iOS 8.6.0.51 and switched to the new Unified API.
Now I want to get the keyboard size (this code worked before):
var val = new NSValue (notification.UserInfo.ValueForKey (UIKeyboard.FrameBeginUserInfoKey).Handle);
RectangleF keyboardSize = val.RectangleFValue;
With the help of the migration tool the RectangleF is converted to CGRect, but the errors I'm getting here are
Error CS1540: Cannot access protected member
Foundation.NSValue.NSValue(System.IntPtr)' via a qualifier of type
Foundation.NSValue'. The qualifier must be of type
`MyApp.SomeViewController' or derived from it (CS1540)
and
Error CS0122: `Foundation.NSValue.NSValue(System.IntPtr)' is
inaccessible due to its protection level (CS0122)
How can I solve this? I can delete new NSValue(...), but RectangleFValue still doesn't work and I would need a replacement/another way.
Edit:
According to jonathanpeppers I modified my code to:
NSValue keyboardFrameBegin = (NSValue)notification.UserInfo.ValueForKey (UIKeyboard.FrameBeginUserInfoKey);
CGRect keyboardSize = keyboardFrameBegin.CGRectValue;
This doesn't throw an error anymore, but I can't test it further because I'm in the process of migrating to the Unified API and there are still some errors to correct.
Can you just use a cast:
var val = (NSValue)notification.UserInfo.ValueForKey (UIKeyboard.FrameBeginUserInfoKey);
RectangleF keyboardSize = val.RectangleFValue;
Only rarely should you have to mess with handles in Xamarin.iOS.
To be absolutely sure what to cast to, debug and see what the underlying type is first:
NSObject val = notification.UserInfo.ValueForKey (UIKeyboard.FrameBeginUserInfoKey);
Console.WriteLine("Type: " + val.GetType());
The .ctor(IntPtr) constructors in NSObject could be misused and causes issue later. Also, like #jonathanpeppers mentioned, they were not required for many scenarios (like this one).
Another way to do this (e.g. if you have nothing else but an handle), as documented here, is to use the ObjCRuntime.Runtime.GetNSObject<T> (IntPtr) method. That will ensure the NSObject-subclass is created correctly.
I have been at this for quite a while. I am using C# for Serious Game Programing, and am working on the SoundManager code found in Chapter 9 of the book, if you want an exact reference. The Code is setting up a sound manager using OpenAl, and I am having a problem with the Alut interface (if that is the right word for what it is). Here is the code that I am working on:
public void LoadSound(string soundId, string path)
{
int buffer = -1;
Al.alGenBuffers(1, out buffer);
int errorCode = Al.alGetError();
System.Diagnostics.Debug.Assert(errorCode == Al.AL_NO_ERROR);
int format;
float frequency;
int size;
System.Diagnostics.Debug.Assert(File.Exists(path));
IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
//System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
//System.Diagnostics.Debug.Assert(data != IntPtr.Zero));
//System.Diagnostics.Debug.Write(errorCode2);
Al.alBufferData(buffer, format, data, size, (int)frequency);
_soundIdentifier.Add(soundId, new SoundSource(buffer, path));
}
The issue is this line right here: System.Diagnostics.Debug.Assert(data != IntPtr.Zero));. When this line is not commented out, it always fails. I did have it work, and do not know what I did to change it, and it stopped working. I have posted about this on another post here: Load sound problem in OpenAL
I have looked all over, and from what I can gather, the issue is with the way that OpenAl is working on my system. To that end, I have uninstalled the Tao Framework that I am using to run OpenAl, and reinstalled. I have also done a system restore to as many points as I have back. I have thought about nuking my whole system, and starting fresh, but a want to avoid this if I can.
I Also have found this link http://distro.ibiblio.org/rootlinux/rootlinux-ports/more/freealut/freealut-1.1.0/doc/alut.html#ErrorHandling that has helped me understand more about Alut, but have been unable to get an alut.dll from it, and cannot get any errors to display. This code:
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
//System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
System.Diagnostics.Debug.Write(errorCode2);
Is my attempt to find out the exact error. If I write the code like:
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
System.Diagnostics.Debug.Write(errorCode2);
I may be using the code all wrong to the find the exact error, as I am still learning c#.
Here is what I am looking for:
1)Is this a syntax error or an error with my system
2)If it is an error in my system, are there files that I am not removing when I try to do an uninstall of OpenAL to refresh all the files.
3)How do I get the alutGetError() code to display in such a way that I can actually read what it is.
Thank you for any help beforehand.
I recently ran into the same problem while going through that book and was able to figure it out by logging the error to the output window, notice I through the console.writeline in there.
After doing that I checked the output window which gave me the error code 519. After looking all over I saw a few forum posts recommending I re-install openAl to fix this issue which did the trick, all the links I found didn't work to the download so I had to hunt around but softTonic had the one that worked for me on my windows 7 machine http://openal.en.softonic.com/download
IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
var error= Alut.alutGetError();
Console.WriteLine(error);
//System.Diagnostics.Debug.Assert(data != IntPtr.Zero);
Hope this helps,
helpdevelop
So this is a continuation of a question I asked earlier today. I've built myself some nice looking ribbon trails using XNA 3.1's DrawUserPrimitives method, essentially by expanding a polygon as motion occurs. It all looks super sleek and nice, except for one thing - anti-aliasing. I cannot for the life of me work out how to apply it.
I've set this in the game constructor:
graphics.PreferMultiSampling = true;
And I've also added this to test for the hardware:
graphics.PreparingDeviceSettings += new EventHandler<PreparingDeviceSettingsEventArgs>((sender, e) =>
{
PresentationParameters parameters = e.GraphicsDeviceInformation.PresentationParameters;
parameters.MultiSampleQuality = 0;
#if XBOX
pp.MultiSampleType = MultiSampleType.FourSamples;
return;
#else
int quality;
GraphicsAdapter adapter = e.GraphicsDeviceInformation.Adapter;
SurfaceFormat format = adapter.CurrentDisplayMode.Format;
if (adapter.CheckDeviceMultiSampleType(DeviceType.Hardware, format, false, MultiSampleType.FourSamples, out quality))
{
parameters.MultiSampleType = MultiSampleType.FourSamples;
}
else if (adapter.CheckDeviceMultiSampleType(DeviceType.Hardware, format, false, MultiSampleType.TwoSamples, out quality))
{
parameters.MultiSampleType = MultiSampleType.TwoSamples;
}
#endif
});
By adding some print lines, I know my hardware can support 4 sample AA, but this all seems to make no difference. I just can't seem to get this to work.
Here's a screenshot of one of my trails with all of that code applied:
I'd really appreciate some help. I looked at this a while ago for a solution to a different problem, and couldn't get it to work then, either.
Well, cheers.
Fixed this one, too!
The issue was that, while the back buffer was getting the right anti-alias settings, the render target wasn't. This meant that drawing to the render target was done without AA, but the texture that was then drawn to the back buffer was done with it. I've fixed it now.
I am in the final stages of porting some code into my framework.
The latest problem is very similar to this one I posted recently ( Strange "The type arguments for method cannot be inferred from the usage." ), whereby text enclosed in '<' and '>' in the listing I am porting code is missing.
The latest offending line is:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);
I get the following error from the compiler:
The type arguments for method 'SlimDX.Direct3D10.Device.OpenSharedResource(System.IntPtr)' cannot be inferred from the usage. Try specifying the type arguments explicitly.
I tried to fix this myself by changing my code to:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain<SlimDX.Direct3D11.Resource>(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);
... but now I get an even stranger run-time error:
"Error: Method 'SlimDX.Direct3D11.Resource.FromPointerReflectionThunk' not found."
Initial research indicates I might have stumbled into something which is way above my head: http://www.gamedev.net/topic/542095-slimdx-need-help-from-nativemanaged-interop-expert/
All I am trying to do is port this code into my framework: http://www.aaronblog.us/?p=36 ... which is all about drawing text in SlimDX with DX11.
At some point I hope to have figured out how to genericise this code into my framework. It is heavy going though.
I'm using SlimDX SDK (January 2012).
Look at the last post in the gamedev.net thread you referenced -- it says that you can fix the problem by specifying the type argument as Texture2D.
So you might try:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain<Texture2D>(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);
I am using SlimDX with WinForms for a while now, but want to make the switch to WPF now. However, I can't figure out how to get DX10/11 working with WPF. The February release of SlimDX provides a WPF example, which only works with DX 9 though.
I found the following solution: http://jmorrill.hjtcentral.com/Home/tabid/428/EntryId/437/Direct3D-10-11-Direct2D-in-WPF.aspx
but can't get it to work with SlimDX. My main problem is the shared resource handle as I don't know how to retrieve the shared handle from a SlimDX texture. I can't find any information to this topic.
In C++ the code looks like this:
HRESULT D3DImageEx::GetSharedHandle(IUnknown *pUnknown, HANDLE * pHandle)
{
HRESULT hr = S_OK;
*pHandle = NULL;
IDXGIResource* pSurface;
if (FAILED(hr = pUnknown->QueryInterface(__uuidof(IDXGIResource), (void**)&pSurface)))
return hr;
hr = pSurface->GetSharedHandle(pHandle);
pSurface->Release();
return hr;
}
Basically, what I want to do (because I think that this is the solution), is to share a texture between a Direct3d9DeviceEx (for rendering the WPF D3DImage) and a Direct3d10Device (a texture render target for my scene).
Any pointers in the right direction are greatly appreciated.
They posted some sample code on how to use slimdx/directx10 with WPF. Here's the link
There is a control called WindowsFormsHost, maybe you could integrate your current WinForm control that way?
Have a look at D3DImageEx. http://jmorrill.hjtcentral.com/Home/tabid/428/EntryId/437/Direct3D-10-11-Direct2D-in-WPF.aspx
You provide a reference to your rendertarget, but it has to be created with the Shared flag. I was not able to use a swapchain in this way though.
let renderTargetDescription = Texture2DDescription( Width=width,
Height=height,
MipLevels=1,
ArraySize=1,
Format = Format.B8G8R8A8_UNorm,
SampleDescription = SampleDescription(Count = 1),
BindFlags = (BindFlags.RenderTarget ||| BindFlags.ShaderResource),
OptionFlags = ResourceOptionFlags.Shared)