} // For diagnostics really
public void Construct()
{
// The default allocs refer to four startup pages to be allocated as below from the atlas
// once the atlas is used for the first time. The page coordinates correspond to the atlas's
// internal algorithm's results. If that algorithm changes, the new results must be put here to match
m_OpacityAllocator = m_ColorAllocator = m_ClipRectAllocator = m_TransformAllocator = m_TextSettingsAllocator = new BitmapAllocator32();
m_TransformAllocator.Construct(pageHeight, 1, 3);
m_TransformAllocator.ForceFirstAlloc((ushort)identityTransformTexel.x, (ushort)identityTransformTexel.y);
m_ClipRectAllocator.Construct(pageHeight);
m_ClipRectAllocator.ForceFirstAlloc((ushort)infiniteClipRectTexel.x, (ushort)infiniteClipRectTexel.y);
m_OpacityAllocator.Construct(pageHeight);
m_OpacityAllocator.ForceFirstAlloc((ushort)fullOpacityTexel.x, (ushort)fullOpacityTexel.y);
m_ColorAllocator.Construct(pageHeight);
m_ColorAllocator.ForceFirstAlloc((ushort)clearColorTexel.x, (ushort)clearColorTexel.y);
m_TextSettingsAllocator.Construct(pageHeight, 1, 4);
m_TextSettingsAllocator.ForceFirstAlloc((ushort)defaultTextCoreSettingsTexel.x, (ushort)defaultTextCoreSettingsTexel.y);
m_VertexTexturingEnabled = UIRenderDevice.vertexTexturingIsAvailable;
if (!m_VertexTexturingEnabled)
{
int constantCount = 20; // Once custom materials are exposed, this number must be parameterized
// Note that we can't do a lazy late allocation on the constants array size here (e.g. allocate only the default entry)
// because once the material receives an array parameter value for the first time, it clings to its size and never
// allows size changes afterwards without recreating the material, so we need to get the size right pessimistically
m_Transforms = new NativeArray <Transform3x4>(constantCount, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
m_ClipRects = new NativeArray <Vector4>(constantCount, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
m_Transforms[0] = new Transform3x4()
{
v0 = identityTransformRow0Value, v1 = identityTransformRow1Value, v2 = identityTransformRow2Value
};
m_ClipRects[0] = infiniteClipRectValue;
}
}
public void SetTransformValue(BMPAlloc alloc, Matrix4x4 xform)
{
Debug.Assert(alloc.IsValid());
if (m_VertexTexturingEnabled)
{
var allocXY = AllocToTexelCoord(ref m_TransformAllocator, alloc);
m_Storage.SetTexel(allocXY.x, allocXY.y + 0, xform.GetRow(0));
m_Storage.SetTexel(allocXY.x, allocXY.y + 1, xform.GetRow(1));
m_Storage.SetTexel(allocXY.x, allocXY.y + 2, xform.GetRow(2));
}
else
{
m_Transforms[AllocToConstantBufferIndex(alloc)] = new Transform3x4()
{
v0 = xform.GetRow(0),
v1 = xform.GetRow(1),
v2 = xform.GetRow(2)
}
};
}
public void SetTransformValue(BMPAlloc alloc, Matrix4x4 xform)
{
Debug.Assert(alloc.IsValid());
if (m_VertexTexturingEnabled)
{
var allocXY = AllocToTexelCoord(ref m_TransformAllocator, alloc);
m_Atlas.EnqueueBlit(UIRenderDevice.whiteTexel, allocXY.x, allocXY.y + 0, false, xform.GetRow(0));
m_Atlas.EnqueueBlit(UIRenderDevice.whiteTexel, allocXY.x, allocXY.y + 1, false, xform.GetRow(1));
m_Atlas.EnqueueBlit(UIRenderDevice.whiteTexel, allocXY.x, allocXY.y + 2, false, xform.GetRow(2));
}
else
{
m_Transforms[AllocToConstantBufferIndex(alloc)] = new Transform3x4()
{
v0 = xform.GetRow(0),
v1 = xform.GetRow(1),
v2 = xform.GetRow(2)
}
};
}