public static void SetFilter(BlurFilterFormat format, bool xAxis, SinglePassTextureFilter target, bool supportsFiltering, float bellExponent)
{
lock (weights)
{
int kernel = GenerateFilter(format, supportsFiltering, bellExponent);
Vector2 axis = new Vector2(xAxis ? 1 : 0, xAxis ? 0 : 1);
for (int i = 0; i < 16; i++)
{
offsetsV[i] = axis * offset[i];
}
target.SetFilter(offsetsV, weights, kernel);
}
}
/// <summary>
/// Blur the source horizontally to the <paramref name="intermediate"/> target, then blur vertically to <paramref name="target"/>.
/// </summary>
/// <param name="source"></param>
/// <param name="filterFormat">format of the blur filter</param>
/// <param name="intermediate">draw target to use as a temporary, intermediate target for blurring</param>
/// <param name="target"></param>
/// <param name="bellCurveExponent">
/// <para>A scale value to infulence the bell curve used to generate the filter kernel.</para>
/// <para>A value of 1.0 generates a standard blur filter kernels. Larger values will produce a tighter curve, and less blur.</para>
/// <para>Smaller values will produce a wider curve, and a larger blur - but may produce a visible edge as the curve more rapidly ends.</para>
/// </param>
public BlurFilter(BlurFilterFormat filterFormat, float bellCurveExponent, DrawTargetTexture2D source, DrawTargetTexture2D intermediate, DrawTargetTexture2D target)
{
if (target == null || source == null)
{
throw new ArgumentNullException();
}
if (intermediate != null && source.SurfaceFormat != intermediate.SurfaceFormat)
{
throw new ArgumentException("source.SurfaceFormat != intermediate.SurfaceFormat");
}
if (intermediate != null && target.SurfaceFormat != intermediate.SurfaceFormat)
{
throw new ArgumentException("target.SurfaceFormat != intermediate.SurfaceFormat");
}
this.source = source;
#if XBOX360
//if the surface will fit into EDRAM then the intermediate can be skipped
if (source.Width * source.Height * DrawTarget.FormatSize(source.SurfaceFormat) < 1000 * 1000 * 10) //approx
{
this.filterV = new SinglePassTextureFilter(source, target);
this.filterH = new SinglePassTextureFilter(target, target);
}
else
{
this.filterV = new SinglePassTextureFilter(source, intermediate);
this.filterH = new SinglePassTextureFilter(intermediate, source);
}
#else
this.filterV = new SinglePassTextureFilter(source, intermediate);
this.filterH = new SinglePassTextureFilter(intermediate, target);
#endif
SetFilterFormat(filterFormat, bellCurveExponent);
}
/// <summary>
/// Blur the source horizontally to the <paramref name="intermediate"/> target, then blur vertically to <paramref name="target"/>.
/// </summary>
/// <param name="source"></param>
/// <param name="filterFormat">format of the blur filter</param>
/// <param name="intermediate">draw target to use as a temporary, intermediate target for blurring</param>
/// <param name="target"></param>
/// <param name="bellCurveExponent">
/// <para>A scale value to infulence the bell curve used to generate the filter kernel.</para>
/// <para>A value of 1.0 generates a standard blur filter kernels. Larger values will produce a tighter curve, and less blur.</para>
/// <para>Smaller values will produce a wider curve, and a larger blur - but may produce a visible edge as the curve more rapidly ends.</para>
/// </param>
public BlurFilter(BlurFilterFormat filterFormat, float bellCurveExponent, DrawTargetTexture2D source, DrawTargetTexture2D intermediate, DrawTargetTexture2D target)
{
if (target == null || source == null)
throw new ArgumentNullException();
if (intermediate != null && source.SurfaceFormat != intermediate.SurfaceFormat)
throw new ArgumentException("source.SurfaceFormat != intermediate.SurfaceFormat");
if (intermediate != null && target.SurfaceFormat != intermediate.SurfaceFormat)
throw new ArgumentException("target.SurfaceFormat != intermediate.SurfaceFormat");
this.source = source;
this.filterV = new SinglePassTextureFilter(source, intermediate);
this.filterH = new SinglePassTextureFilter(intermediate, target);
SetFilterFormat(filterFormat, bellCurveExponent);
}
public static void SetFilter(BlurFilterFormat format, bool xAxis, SinglePassTextureFilter target, bool supportsFiltering, float bellExponent)
{
lock (weights)
{
int kernel = GenerateFilter(format, supportsFiltering, bellExponent);
Vector2 axis = new Vector2(xAxis ? 1 : 0, xAxis ? 0 : 1);
for (int i = 0; i < 16; i++)
offsetsV[i] = axis * offset[i];
target.SetFilter(offsetsV, weights, kernel);
}
}