directx

As per the title, how can I check which version of DirectX a user has installed? Checking the FeatureLevel isn't enough, as my application can run on feature level 10.0, but requires that DirectX 11.1 be installed. Why this is not a duplicate: How to code to get direct X version on my machine in C#? The first answer in this question says "If Windows 7, DirectX = 11, if Windows Vista, DirectX = 10". This is wrong, as Vista supports both DirectX 10 and 11 and Windows 7 supports DirectX 11 and 11.1. The second answer references a registry key which only applies to DirectX 9 and lower. Even on a

Because processing was slow by D3DPOOL_SCRATCH, I wrote the desktop capture program to reference for the report on the Internet. However, a result is a pitch-black picture. Is this the result of a console program or is there any other cause? #include <stdio.h> #include <Windows.h> #include <d3d9.h> void main() { CoInitialize(NULL); LPDIRECT3D9 d3d9; LPDIRECT3DDEVICE9 d3ddev; d3d9 = Direct3DCreate9(D3D_SDK_VERSION); int ww = GetSystemMetrics(SM_CXSCREEN); int wh = GetSystemMetrics(SM_CYSCREEN); HWND hwnd = GetDesktopWindow(); D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(d3dpp)); d3dpp

How to query GPU Usage in DirectX? Specifically DirectX 11. If someone ever did it, could you provide me the code snippet? Vertexwahn Process Hakcer is able to do this. See here: http://processhacker.svn.sourceforge.net/viewvc/processhacker/2.x/trunk/plugins/ExtendedTools/gpumon.c?revision=4927&view=markup A similar question has been asked here: How do you calculate the load on a nvidia (cuda capable), gpu card? 来源： https://stackoverflow.com/questions/16376218/how-to-query-gpu-usage-in-directx

I'm invoking D3D11CreateDevice() with the following code: ID3D11Device* md3dDevice; ID3D11DeviceContext* md3dImmediateContext; D3D_DRIVER_TYPE md3dDriverType = D3D_DRIVER_TYPE_HARDWARE; createDeviceFlags = D3D11_CREATE_DEVICE_DEBUG; HRESULT hr = D3D11CreateDevice( 0, md3dDriverType, 0, createDeviceFlags, 0, 0, D3D11_SDK_VERSION, &md3dDevice, &featureLevel, &md3dImmediateContext); However, the result stored in HRESTUL hr is E_FAIL . The console has the following output: First-chance exception at 0x7590b9bc in Init Direct3D.exe: Microsoft C++ exception: _com_error at memory location 0x0049ec64..

I am following an example book called: Introduction to 3D Game Programming with DirectX 11 It is all written in VS2010. I would like to try using VS2013... It is an example project for Windows Desktop Program I have a program with the following in it (including some other files as part of common use): color.fx //*************************************************************************************** // color.fx by Frank Luna (C) 2011 All Rights Reserved. // // Transforms and colors geometry. //*************************************************************************************** cbuffer

I understand mipmapping pretty well. What I do not understand (on a hardware/driver level) is how mipmapping improves the performance of an application (at least this is often claimed). The driver does not know until the fragment shader is executed which mipmap level is going to be accessed, so anyway all mipmap levels need to be present in the VRAM, or am I wrong? What exactly is causing the performance improvement? Andon M. Coleman You are no doubt aware that each texel in the lower LODs of the mip-chain covers a higher percentage of the total texture image area, correct? When you sample a

Is there an easy way to use DirectX in Java? In particular, DirectX's video APIs. I know that C# might be a more natural choice, but I have my devious reasons for wanting to do something so perverse. I don't know about easy, but you could always use JNI to load the DirectX libs and invoke the methods. Using something like Swig you could auto-generate a lot of the code. Not sure how workable something like that would be though. There seems to be a standard API about dealing with 3D inside Java. It probably uses some kind of accelerating technology, may be even DirectX. But I'm not sure about

I tried to write a game for Windows and Windows Phone 8.1, with SharpDx. But when I try, to add a Windows Phone 8.1 Version to my already existing Windows 8.1 Game, I get a few errors and the App doesn't work. Now the question: Is there an SharpDx Template in XNA Style for a Windows Universal App, like the Template I got for my only Windows 8.1 Game (from the SharpDx Visual Studio Extension)? No there isn't, yet. What you should do is open an issue ( https://github.com/sharpdx/SharpDX/issues ) and ask for the feature to be implemented. But you can still get started while waiting for it to be