Posterize effect

The posterize effect reduces the number of unique colors in an image.

The CLSID for this effect is CLSID_D2D1Posterize.

• Example Image
• Sample Code
• Effect Properties
• Requirements
• Related topics

Example image

Sample code

ComPtr<ID2D1Effect> posterizeEffect;
m_d2dContext->CreateEffect(CLSID_D2D1Posterize, &posterizeEffect);
 
posterizeEffect->SetInput(0, bitmap);
posterizeEffect->SetValue(D2D1_POSTERIZE_PROP_RED_VALUE_COUNT, 4);
posterizeEffect->SetValue(D2D1_POSTERIZE_PROP_GREEN_VALUE_COUNT, 4);
posterizeEffect->SetValue(D2D1_POSTERIZE_PROP_BLUE_VALUE_COUNT, 4);
 
m_d2dContext->BeginDraw();
m_d2dContext->DrawImage(posterizeEffect.Get());
m_d2dContext->EndDraw();

Effect properties

The properties for the posterize effect are defined by the D2D1_POSTERIZE_PROP enumeration.

Requirements

Requirement	Value
Minimum supported client	Windows 10 [desktop apps | Windows Store apps]
Minimum supported server	Windows 10 [desktop apps | Windows Store apps]
Header	d2d1effects_2.h
Library	d2d1.lib, dxguid.lib

Related topics

• ID2D1Effect interface