Add PixelFormat::NV12

Source/Engine/Graphics/PixelFormat.h

@@ -558,6 +558,11 @@ API_ENUM() enum class PixelFormat : uint32
     /// </summary>
     YUY2 = 108,
 
+    /// <summary>
+    /// Packed YUV 4:2:0 video texture format. Texture uses separate views to access the luma (Y) plane separately from the chroma (UV) planes. For luminance data view, the mapping to the view channel is Y->R8. For chrominance data view, the mapping to the view channel is U->R8 and V->G8.
+    /// </summary>
+    NV12 = 109,
+
     /// <summary>
     /// The maximum format value (for internal use only).
     /// </summary>

Source/Engine/Graphics/PixelFormatExtensions.cpp

@@ -150,6 +150,8 @@ void PixelFormatExtensions::Init()
         PixelFormat::BC4_UNorm,
     };
     InitFormat(formats8, 4);
+
+    sizeOfInBits[(int32)PixelFormat::NV12] = 12;
 }
 
 int32 PixelFormatExtensions::SizeInBits(PixelFormat format)
@@ -379,6 +381,7 @@ bool PixelFormatExtensions::IsVideo(const PixelFormat format)
     switch (format)
     {
     case PixelFormat::YUY2:
+    case PixelFormat::NV12:
         return true;
     default:
         return false;

Source/Engine/Graphics/RenderTools.cpp

@@ -349,6 +349,10 @@ void RenderTools::ComputePitch(PixelFormat format, int32 width, int32 height, ui
         rowPitch = ((width + 1) >> 1) * 4;
         slicePitch = rowPitch * height;
         break;
+    case PixelFormat::NV12:
+        rowPitch = width;
+        slicePitch = width * height * 3 / 2;
+        break;
     default:
         // Default byte alignment
         rowPitch = (width * PixelFormatExtensions::SizeInBits(format) + 7) / 8;