internal Number4 DoBlend(int renderTargetIndex, ref Number4 source, ref Number4 destination, ref Number4 blendFactor)
{
var blendDescription = _renderTargetBlendDescriptions[renderTargetIndex];
if (!blendDescription.IsBlendEnabled)
return source;
var result = new Number4();
// RGB blending
var colorDestinationBlendFactor = GetBlendFactor(blendDescription.DestinationBlend, ref source, ref destination, ref blendFactor);
var colorSourceBlendFactor = GetBlendFactor(blendDescription.SourceBlend, ref source, ref destination, ref blendFactor);
var colorDestination = Number4.Multiply(ref destination, ref colorDestinationBlendFactor);
var colorSource = Number4.Multiply(ref source, ref colorSourceBlendFactor);
result.R = DoBlendOperation(blendDescription.BlendOperation, colorSource.R, colorDestination.R);
result.G = DoBlendOperation(blendDescription.BlendOperation, colorSource.G, colorDestination.G);
result.B = DoBlendOperation(blendDescription.BlendOperation, colorSource.B, colorDestination.B);
// Alpha blending
var alphaDestinationBlendFactor = GetBlendFactor(blendDescription.DestinationAlphaBlend, ref source, ref destination, ref blendFactor);
var alphaSourceBlendFactor = GetBlendFactor(blendDescription.SourceAlphaBlend, ref source, ref destination, ref blendFactor);
var alphaDestination = destination.A * alphaDestinationBlendFactor.A;
var alphaSource = source.A * alphaSourceBlendFactor.A;
result.A = DoBlendOperation(blendDescription.AlphaBlendOperation, alphaSource, alphaDestination);
return result;
}
private Number4 GetBlendFactor(BlendOption blend, ref Number4 source, ref Number4 destination, ref Number4 blendFactor)
{
switch (blend)
{
case BlendOption.Zero:
return new Number4(0, 0, 0, 0);
case BlendOption.One:
return new Number4(1, 1, 1, 1);
case BlendOption.SourceColor:
return source;
case BlendOption.InverseSourceColor:
return Number4.Invert(ref source);
case BlendOption.SourceAlpha:
return new Number4(source.A, source.A, source.A, source.A);
case BlendOption.InverseSourceAlpha:
return Number4.Invert(new Number4(source.A, source.A, source.A, source.A));
case BlendOption.DestinationAlpha:
return new Number4(destination.A, destination.A, destination.A, destination.A);
case BlendOption.InverseDestinationAlpha:
return Number4.Invert(new Number4(destination.A, destination.A, destination.A, destination.A));
case BlendOption.DestinationColor:
return destination;
case BlendOption.InverseDestinationColor:
return Number4.Invert(ref destination);
case BlendOption.SourceAlphaSaturate:
return Number4.Saturate(new Number4(source.A, source.A, source.A, source.A));
case BlendOption.BlendFactor:
return blendFactor;
case BlendOption.InverseBlendFactor:
return Number4.Invert(ref blendFactor);
default:
throw new NotSupportedException();
}
}
private static uint CalculateClipCode(ref Number4 position)
{
var w = position.W;
uint result = 0;
if (position.X < -w)
result |= 1;
if (position.X > w)
result |= 2;
if (position.Y < -w)
result |= 4;
if (position.Y > w)
result |= 8;
if (position.Z < 0)
result |= 16;
if (position.Z > w)
result |= 32;
// TODO: 0 < w ?
return result;
}
public static Number4 Multiply(ref Number4 left, ref Number4 right)
{
return new Number4(
left.X * right.X,
left.Y * right.Y,
left.Z * right.Z,
left.W * right.W);
}
public static Number4 Multiply(ref Number4 left, ref Number4 right)
{
return(new Number4(
left.X * right.X,
left.Y * right.Y,
left.Z * right.Z,
left.W * right.W));
}
public static Number4 Swizzle(Number4 original, Operand4ComponentName[] swizzles)
{
return(new Number4(
original.GetNumber((int)swizzles[0]),
original.GetNumber((int)swizzles[1]),
original.GetNumber((int)swizzles[2]),
original.GetNumber((int)swizzles[3])));
}
public static Number4 Average(ref Number4 v0, ref Number4 v1, ref Number4 v2, ref Number4 v3)
{
return(new Number4(
(v0.X + v1.X + v2.X + v3.X) / 4.0f,
(v0.Y + v1.Y + v2.Y + v3.Y) / 4.0f,
(v0.Z + v1.Z + v2.Z + v3.Z) / 4.0f,
(v0.W + v1.W + v2.W + v3.W) / 4.0f));
}
public static Number4 Lerp(ref Number4 left, ref Number4 right, float value)
{
return new Number4(
left.X * (1 - value) + right.X * value,
left.Y * (1 - value) + right.Y * value,
left.Z * (1 - value) + right.Z * value,
left.W * (1 - value) + right.W * value);
}
public static Number4 Subtract(ref Number4 left, ref Number4 right)
{
return(new Number4(
Number.FromFloat(left.Number0.Float - right.Number0.Float),
Number.FromFloat(left.Number1.Float - right.Number1.Float),
Number.FromFloat(left.Number2.Float - right.Number2.Float),
Number.FromFloat(left.Number3.Float - right.Number3.Float)));
}
public static Number4 Average(ref Number4 v0, ref Number4 v1, ref Number4 v2, ref Number4 v3)
{
return new Number4(
(v0.X + v1.X + v2.X + v3.X) / 4.0f,
(v0.Y + v1.Y + v2.Y + v3.Y) / 4.0f,
(v0.Z + v1.Z + v2.Z + v3.Z) / 4.0f,
(v0.W + v1.W + v2.W + v3.W) / 4.0f);
}
public static Number4 Lerp(ref Number4 left, ref Number4 right, float value)
{
return(new Number4(
left.X * (1 - value) + right.X * value,
left.Y * (1 - value) + right.Y * value,
left.Z * (1 - value) + right.Z * value,
left.W * (1 - value) + right.W * value));
}
public Pixel(int x, int y)
{
Vertices = null;
X = x;
Y = y;
Color = new Number4();
Samples = new Samples();
PrimitiveID = 0;
RenderTargetArrayIndex = 0;
}
public static Number4 Saturate(Number4 original)
{
return(new Number4
{
Number0 = Number.FromFloat(original.Number0.Float, true),
Number1 = Number.FromFloat(original.Number1.Float, true),
Number2 = Number.FromFloat(original.Number2.Float, true),
Number3 = Number.FromFloat(original.Number3.Float, true)
});
}
public static Number4 Linear(float alpha, float beta, float gamma,
ref Number4 p1, ref Number4 p2, ref Number4 p3)
{
return new Number4
{
X = Linear(alpha, beta, gamma, p1.X, p2.X, p3.X),
Y = Linear(alpha, beta, gamma, p1.Y, p2.Y, p3.Y),
Z = Linear(alpha, beta, gamma, p1.Z, p2.Z, p3.Z),
W = Linear(alpha, beta, gamma, p1.W, p2.W, p3.W)
};
}
void ISwapChainPresenter.Present(Number4[] colors)
{
// TODO: Convert Color4F[] to byte[] in R8G8B8A8 format.
var bitmapData = _bitmap.LockBits(new Rectangle(0, 0, _width, _height),
ImageLockMode.WriteOnly, _bitmap.PixelFormat);
//Marshal.Copy(colors, 0, bitmapData.Scan0, _width * _height * 3);
_bitmap.UnlockBits(bitmapData);
_graphics.DrawImage(_bitmap, Point.Empty);
}
public static Box2D CreateBoundingBox(ref Number4 v0, ref Number4 v1, ref Number4 v2)
{
float minX = float.MaxValue, minY = float.MaxValue;
float maxX = float.MinValue, maxY = float.MinValue;
CheckMinMax(ref v0, ref minX, ref maxX, ref minY, ref maxY);
CheckMinMax(ref v1, ref minX, ref maxX, ref minY, ref maxY);
CheckMinMax(ref v2, ref minX, ref maxX, ref minY, ref maxY);
return new Box2D(
MathUtility.FloorToInt(minX), MathUtility.FloorToInt(minY),
MathUtility.CeilingToInt(maxX), MathUtility.CeilingToInt(maxY));
}
public static Number4 Negate(Number4 original, NumberType type)
{
switch (type)
{
case NumberType.Float:
return NegateFloat(original);
case NumberType.Int:
return NegateInt(original);
case NumberType.Double:
return NegateDouble(original);
default:
throw new InvalidOperationException(string.Format("Negate is not a valid operation for number type '{0}'.", type));
}
}
private static void CheckMinMax(ref Number4 v,
ref float minX, ref float maxX,
ref float minY, ref float maxY)
{
if (v.X < minX)
minX = v.X;
if (v.X > maxX)
maxX = v.X;
if (v.Y < minY)
minY = v.Y;
if (v.Y > maxY)
maxY = v.Y;
}
public static Number4 Perspective(
float alpha, float beta, float gamma,
ref Number4 p1, ref Number4 p2, ref Number4 p3,
float p1W, float p2W, float p3W,
float w)
{
var result = new Number4
{
X = Perspective(alpha, beta, gamma, p1.X, p2.X, p3.X, p1W, p2W, p3W, w),
Y = Perspective(alpha, beta, gamma, p1.Y, p2.Y, p3.Y, p1W, p2W, p3W, w),
Z = Perspective(alpha, beta, gamma, p1.Z, p2.Z, p3.Z, p1W, p2W, p3W, w),
W = Perspective(alpha, beta, gamma, p1.W, p2.W, p3.W, p1W, p2W, p3W, w)
};
return result;
}
public static Number4 Negate(Number4 original, NumberType type)
{
switch (type)
{
case NumberType.Float:
return(NegateFloat(original));
case NumberType.Int:
return(NegateInt(original));
case NumberType.Double:
return(NegateDouble(original));
default:
throw new InvalidOperationException(string.Format("Negate is not a valid operation for number type '{0}'.", type));
}
}
public void WriteMaskedValue(Number4 value, ComponentMask mask)
{
if (mask.HasFlag(ComponentMask.X))
{
Number0 = value.Number0;
}
if (mask.HasFlag(ComponentMask.Y))
{
Number1 = value.Number1;
}
if (mask.HasFlag(ComponentMask.Z))
{
Number2 = value.Number2;
}
if (mask.HasFlag(ComponentMask.W))
{
Number3 = value.Number3;
}
}
void ISwapChainPresenter.Present(Number4[] colors)
{
for (var i = 0; i < colors.Length; i++)
{
_outputBytes[(i * 4) + 0] = (byte) (colors[i].B * 255.0f);
_outputBytes[(i * 4) + 1] = (byte) (colors[i].G * 255.0f);
_outputBytes[(i * 4) + 2] = (byte) (colors[i].R * 255.0f);
_outputBytes[(i * 4) + 3] = (byte) (colors[i].A * 255.0f);
}
_bitmap.Dispatcher.Invoke((Action) (() =>
{
_bitmap.Lock();
_bitmap.WritePixels(
new Int32Rect(0, 0, _bitmap.PixelWidth, _bitmap.PixelHeight),
_outputBytes, _width * _bitmap.Format.BitsPerPixel / 8, 0);
_bitmap.Unlock();
}));
}
public void AlphaBlendStateIsValid()
{
// Arrange.
var device = new Device();
var blendState = new BlendState(device, BlendStateDescription.AlphaBlend);
var source = new Number4(1.0f, 0.0f, 0.0f, 0.3f);
var destination = new Number4(0.0f, 1.0f, 0.0f, 0.4f);
var blendFactor = new Number4();
// Act.
var result = blendState.DoBlend(0,
ref source, ref destination,
ref blendFactor);
// Assert.
Assert.That(result.R, Is.EqualTo(1.0f).Within(0.01f));
Assert.That(result.G, Is.EqualTo(0.7f).Within(0.01f));
Assert.That(result.B, Is.EqualTo(0.0f).Within(0.01f));
Assert.That(result.A, Is.EqualTo(0.3f + (1 - 0.3f) * 0.4f).Within(0.01f));
}
public static Number4 Abs(Number4 original, NumberType type)
{
switch (type)
{
case NumberType.Float:
case NumberType.Int:
case NumberType.UInt:
return new Number4(
Number.Abs(original.Number0, type),
Number.Abs(original.Number1, type),
Number.Abs(original.Number2, type),
Number.Abs(original.Number3, type));
case NumberType.Double:
return new Number4(
Math.Abs(original.Double0),
Math.Abs(original.Double1));
default:
throw new InvalidOperationException(string.Format("Abs is not a valid operation for number type '{0}'.", type));
}
}
public PixelEventArgs(
VertexShaderOutput[] vertices,
int primitiveID,
uint renderTargetArrayIndex,
int x,
int y,
ref Number4 pixelShader,
ref Number4 previous,
Number4? result,
PixelExclusionReason exclusionReason)
{
_vertices = vertices;
_primitiveID = primitiveID;
_renderTargetArrayIndex = renderTargetArrayIndex;
_x = x;
_y = y;
_pixelShader = pixelShader;
_previous = previous;
_result = result;
_exclusionReason = exclusionReason;
}
public static Number4 Abs(Number4 original, NumberType type)
{
switch (type)
{
case NumberType.Float:
case NumberType.Int:
case NumberType.UInt:
return(new Number4(
Number.Abs(original.Number0, type),
Number.Abs(original.Number1, type),
Number.Abs(original.Number2, type),
Number.Abs(original.Number3, type)));
case NumberType.Double:
return(new Number4(
Math.Abs(original.Double0),
Math.Abs(original.Double1)));
default:
throw new InvalidOperationException(string.Format("Abs is not a valid operation for number type '{0}'.", type));
}
}
public void SetData(int x, int y, int z, ref Number4 value)
{
Data[((z * Width * Height) + (y * Width) + x)] = value;
}
public ColorViewModel(Number4 color)
{
_color = color;
}
public override void Clear(ref Number4 color)
{
foreach (var subresource in _subresources)
subresource.Clear(ref color);
}
public override void SetData(uint arrayIndex, int x, int y, int sampleIndex, ref Number4 value)
{
_subresources[arrayIndex].SetData(x, y, ref value);
}
private static void PerspectiveDivide(ref Number4 position)
{
position.X /= position.W;
position.Y /= position.W;
position.Z /= position.W;
}
public abstract void Clear(ref Number4 color);
public abstract void SetData(uint arrayIndex, int x, int y, int sampleIndex, ref Number4 value);
public override void Clear(float depth)
{
var color = new Number4(depth, 0, 0, 0);
_subresource.Clear(ref color);
}
public void SetData(int x, ref Number4 value)
{
Data[x] = value;
}
public static Number4 NegateDouble(Number4 original)
{
return(new Number4(-original.Double0, -original.Double1));
}
public static Number4 NegateFloat(Number4 original)
{
return(new Number4(-original.Float0, -original.Float1, -original.Float2, -original.Float3));
}
public static Number4 Invert(ref Number4 value)
{
return new Number4(1 - value.R, 1 - value.G, 1 - value.B, 1 - value.A);
}
public static Number4 NegateInt(Number4 original)
{
return(new Number4(-original.Int0, -original.Int1, -original.Int2, -original.Int3));
}
public override void SetData(uint arrayIndex, int x, int y, int sampleIndex, float value)
{
var color = new Number4(value, 0, 0, 0);
_subresource.SetData(x, ref color);
}
public static Number4 NegateDouble(Number4 original)
{
return new Number4(-original.Double0, -original.Double1);
}
void ISwapChainPresenter.Present(Number4[] colors)
{
Data = colors;
}
public static Number4 Invert(ref Number4 value)
{
return(new Number4(1 - value.R, 1 - value.G, 1 - value.B, 1 - value.A));
}