QtD3D12Window is a Qt 5.6 module providing a QD3D12Window class similar to QOpenGLWindow, a handy qmake rule for offline HLSL shader compilation via fxc, and a number of basic examples.

In the .pro file, add:

QT += d3d12window

Then use it like QOpenGLWindow:

class Window : public QD3D12Window
{
public:
    void initializeD3D() { create command list etc. }
    void resizeD3D(const QSize &size) { ... }
    void paintD3D() { populate and execute command list }
    void afterPresent() { wait as necessary }
};

Use QWidget::createWindowContainer() to embed into widget-based UIs.

To use the qmake rule to generate headers from shaders at build time, copy hlsl.prf to mkspecs/features folder of the Qt SDK.

VSPS = shader.hlsl

vshader.input = VSPS
vshader.header = shader_vs.h
vshader.entry = VS_MyShader
vshader.type = vs_5_0

pshader.input = VSPS
pshader.header = shader_ps.h
pshader.entry = PS_MyShader
pshader.type = ps_5_0

HLSL_SHADERS = vshader pshader
load(hlsl)

Examples in order of increasing complexity:

1. hellowindow - Bringing up a window and clearing the backbuffer

2. hellodevicereset - Handle device removed errors and make the application able to survive a driver update, shader timeout, etc.

3. hellotriangle - Basic rendering, shader and pipeline setup, constant buffers

4. hellotexture - Texturing, mipmaps

5. hellooffscreen - Rendering into offscreen render targets, then using them from the pixel shader

   hellooffscreen_opengl - OpenGL version, for comparing performance, overhead, etc.
   

6. hellomultisample - Rendering with MSAA

7. hellocompressedtexture - Compressed textures loaded from DDS files

8. hellogpumipmap - Mipmap generation via compute shaders