public Expression CompileVertexAttribImplicit(AstVertexAttribImplicit e)
{
var vertexBuffer = CompileExpression(e.VertexBuffer);
DataType vertexDataType = null;
if (vertexBuffer.ReturnType.IsArray)
{
vertexDataType = vertexBuffer.ReturnType.ElementType;
}
else if (!vertexBuffer.IsInvalid)
{
Log.Error(e.Source, ErrorCode.E2067, vertexBuffer.ReturnType.Quote() + " cannot be used to create vertex buffer because it is not an array type");
vertexBuffer = Expression.Invalid;
}
Expression indexBuffer = null;
DataType indexDataType = null;
if (e.OptionalIndexBuffer != null)
{
indexBuffer = CompileExpression(e.OptionalIndexBuffer);
if (indexBuffer.ReturnType.IsArray)
{
indexDataType = indexBuffer.ReturnType.ElementType;
}
else if (!indexBuffer.IsInvalid)
{
Log.Error(indexBuffer.Source, ErrorCode.E2069, indexBuffer.ReturnType.Quote() + " cannot be used to create index buffer because it is not an array type");
indexBuffer = Expression.Invalid;
}
}
Expression vertexStride = null;
Expression vertexAttributeType = null;
if (vertexDataType != null)
{
switch (vertexDataType.BuiltinType)
{
case BuiltinType.Float:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 4);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Float", "Uno.Graphics.VertexAttributeType");
VerifyNonNormalizedVertexAttribute(vertexBuffer.Source, e.Normalize);
break;
case BuiltinType.Float2:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 8);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Float2", "Uno.Graphics.VertexAttributeType");
VerifyNonNormalizedVertexAttribute(vertexBuffer.Source, e.Normalize);
break;
case BuiltinType.Float3:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 12);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Float3", "Uno.Graphics.VertexAttributeType");
VerifyNonNormalizedVertexAttribute(vertexBuffer.Source, e.Normalize);
break;
case BuiltinType.Float4:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 16);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Float4", "Uno.Graphics.VertexAttributeType");
VerifyNonNormalizedVertexAttribute(vertexBuffer.Source, e.Normalize);
break;
case BuiltinType.Short:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 2);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Short" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float;
break;
case BuiltinType.Short2:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 4);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Short2" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float2;
break;
case BuiltinType.Short4:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 8);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Short4" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float4;
break;
case BuiltinType.UShort:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 2);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.UShort" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float;
break;
case BuiltinType.UShort2:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 4);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.UShort2" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float2;
break;
case BuiltinType.UShort4:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 8);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.UShort4" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float4;
break;
case BuiltinType.SByte4:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 4);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.SByte4" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float4;
break;
case BuiltinType.Byte4:
vertexStride = new Constant(vertexBuffer.Source, Essentials.Int, 4);
vertexAttributeType = ILFactory.GetExpression(vertexBuffer.Source, "Uno.Graphics.VertexAttributeType.Byte4" + (e.Normalize ? "Normalized" : ""), "Uno.Graphics.VertexAttributeType");
vertexDataType = Essentials.Float4;
break;
default:
Log.Error(vertexBuffer.Source, ErrorCode.E0000, vertexDataType.Quote() + " is not a valid vertex attribute type");
vertexBuffer = Expression.Invalid;
break;
}
}
Expression indexType = null;
if (indexDataType != null)
{
switch (indexDataType.BuiltinType)
{
case BuiltinType.Byte:
indexType = ILFactory.GetExpression(indexBuffer.Source, "Uno.Graphics.IndexType.Byte", "Uno.Graphics.IndexType");
break;
case BuiltinType.UShort:
indexType = ILFactory.GetExpression(indexBuffer.Source, "Uno.Graphics.IndexType.UShort", "Uno.Graphics.IndexType");
break;
case BuiltinType.UInt:
indexType = ILFactory.GetExpression(indexBuffer.Source, "Uno.Graphics.IndexType.UInt", "Uno.Graphics.IndexType");
break;
default:
Log.Error(indexBuffer.Source, ErrorCode.E0000, indexDataType.Quote() + " is not a valid index type");
indexBuffer = Expression.Invalid;
break;
}
}
if (vertexBuffer.IsInvalid || indexBuffer != null && indexBuffer.IsInvalid)
{
return(Expression.Invalid);
}
var vertexOffset = new Constant(vertexBuffer.Source, Essentials.Int, 0);
return(new NewVertexAttrib(e.Source, vertexDataType, vertexAttributeType, vertexBuffer, vertexStride, vertexOffset, indexType, indexBuffer));
}
public void WriteVertexAttribImplicit(AstVertexAttribImplicit a)
{
Write(a.Source, a.Normalize);
Write(a.VertexBuffer);
Write(a.OptionalIndexBuffer);
}
