public void CopyFrom(RasterBuffer src,
RectI rect_src_ptr,
int dx,
int dy)
{
RectI rsrc = new RectI(rect_src_ptr.x1, rect_src_ptr.y1, rect_src_ptr.x2 + 1, rect_src_ptr.y2 + 1);
// Version with xdst, ydst (absolute positioning)
//RectI rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
// Version with dx, dy (relative positioning)
RectI rdst = new RectI(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
RectI rc = ClipRectangleArea(ref rdst, ref rsrc, (int)src.Width(), (int)src.Height());
if(rc.x2 > 0)
{
int incy = 1;
if(rdst.y1 > rsrc.y1)
{
rsrc.y1 += rc.y2 - 1;
rdst.y1 += rc.y2 - 1;
incy = -1;
}
while(rc.y2 > 0)
{
base.CopyFrom(src,
rdst.x1, rdst.y1,
rsrc.x1, rsrc.y1,
(uint)rc.x2);
rdst.y1 += incy;
rsrc.y1 += incy;
--rc.y2;
}
}
}
public void CopyFrom(RasterBuffer src)
{
CopyFrom(src, new RectI(0, 0, (int)src.Width(), (int)src.Height()), 0, 0);
}
public unsafe override void Generate(RGBA_Bytes *span, int x, int y, uint len)
{
#if use_timers
Generate_Span.Start();
#endif
base.interpolator().Begin(x + base.filter_dx_dbl(), y + base.filter_dy_dbl(), len);
//uint[] fg = new uint[4];
uint *fg = stackalloc uint[4];
uint back_r = m_back_color.m_R;
uint back_g = m_back_color.m_G;
uint back_b = m_back_color.m_B;
uint back_a = m_back_color.m_A;
byte *fg_ptr;
RasterBuffer pSourceRenderingBuffer = base.source().PixelFormat.RenderingBuffer;
int maxx = (int)pSourceRenderingBuffer.Width() - 1;
int maxy = (int)pSourceRenderingBuffer.Height() - 1;
ISpanInterpolator spanInterpolator = base.interpolator();
unchecked
{
do
{
int x_hr;
int y_hr;
spanInterpolator.Coordinates(out x_hr, out y_hr);
x_hr -= base.filter_dx_int();
y_hr -= base.filter_dy_int();
int x_lr = x_hr >> (int)image_subpixel_scale_e.Shift;
int y_lr = y_hr >> (int)image_subpixel_scale_e.Shift;
uint weight;
if (x_lr >= 0 && y_lr >= 0 &&
x_lr < maxx && y_lr < maxy)
{
fg[0] =
fg[1] =
fg[2] =
fg[3] = (int)image_subpixel_scale_e.Scale * (int)image_subpixel_scale_e.Scale / 2;
x_hr &= (int)image_subpixel_scale_e.Mask;
y_hr &= (int)image_subpixel_scale_e.Mask;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) *
((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * ((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
++y_lr;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) * y_hr);
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * y_hr);
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
fg[0] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[1] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[2] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[3] >>= (int)image_subpixel_scale_e.Shift * 2;
}
else
{
if (x_lr < -1 || y_lr < -1 ||
x_lr > maxx || y_lr > maxy)
{
fg[OrderR] = back_r;
fg[OrderG] = back_g;
fg[OrderB] = back_b;
fg[OrderA] = back_a;
}
else
{
fg[0] =
fg[1] =
fg[2] =
fg[3] = (int)image_subpixel_scale_e.Scale * (int)image_subpixel_scale_e.Scale / 2;
x_hr &= (int)image_subpixel_scale_e.Mask;
y_hr &= (int)image_subpixel_scale_e.Mask;
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) *
((int)image_subpixel_scale_e.Scale - y_hr));
BlendInFilterPixel(fg, back_r, back_g, back_b, back_a, pSourceRenderingBuffer, maxx, maxy, x_lr, y_lr, weight);
x_lr++;
weight = (uint)(x_hr * ((int)image_subpixel_scale_e.Scale - y_hr));
BlendInFilterPixel(fg, back_r, back_g, back_b, back_a, pSourceRenderingBuffer, maxx, maxy, x_lr, y_lr, weight);
x_lr--;
y_lr++;
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) * y_hr);
BlendInFilterPixel(fg, back_r, back_g, back_b, back_a, pSourceRenderingBuffer, maxx, maxy, x_lr, y_lr, weight);
x_lr++;
weight = (uint)(x_hr * y_hr);
BlendInFilterPixel(fg, back_r, back_g, back_b, back_a, pSourceRenderingBuffer, maxx, maxy, x_lr, y_lr, weight);
fg[0] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[1] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[2] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[3] >>= (int)image_subpixel_scale_e.Shift * 2;
}
}
(*span).m_R = (byte)fg[0];
(*span).m_G = (byte)fg[1];
(*span).m_B = (byte)fg[2];
(*span).m_A = (byte)fg[3];
++span;
spanInterpolator.Next();
} while (--len != 0);
}
#if use_timers
Generate_Span.Stop();
#endif
}
public unsafe void Generate(out RGBA_Bytes destPixel, int x, int y)
{
base.interpolator().Begin(x + base.filter_dx_dbl(), y + base.filter_dy_dbl(), 1);
uint *fg = stackalloc uint[4];
byte *fg_ptr;
RasterBuffer pSourceRenderingBuffer = base.source().PixelFormat.RenderingBuffer;
int maxx = (int)pSourceRenderingBuffer.Width() - 1;
int maxy = (int)pSourceRenderingBuffer.Height() - 1;
ISpanInterpolator spanInterpolator = base.interpolator();
unchecked
{
int x_hr;
int y_hr;
spanInterpolator.Coordinates(out x_hr, out y_hr);
x_hr -= base.filter_dx_int();
y_hr -= base.filter_dy_int();
int x_lr = x_hr >> (int)image_subpixel_scale_e.Shift;
int y_lr = y_hr >> (int)image_subpixel_scale_e.Shift;
uint weight;
fg[0] = fg[1] = fg[2] = fg[3] = (int)image_subpixel_scale_e.Scale * (int)image_subpixel_scale_e.Scale / 2;
x_hr &= (int)image_subpixel_scale_e.Mask;
y_hr &= (int)image_subpixel_scale_e.Mask;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) *
((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * ((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
++y_lr;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) * y_hr);
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * y_hr);
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
fg[0] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[1] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[2] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[3] >>= (int)image_subpixel_scale_e.Shift * 2;
destPixel.m_R = (byte)fg[OrderR];
destPixel.m_G = (byte)fg[OrderG];
destPixel.m_B = (byte)fg[OrderB];
destPixel.m_A = (byte)fg[OrderA];
}
}
public unsafe override void Generate(RGBA_Bytes *span, int x, int y, uint len)
{
#if use_timers
Generate_Span.Start();
#endif
base.interpolator().Begin(x + base.filter_dx_dbl(), y + base.filter_dy_dbl(), len);
uint *fg = stackalloc uint[4];
byte *fg_ptr;
RasterBuffer pSourceRenderingBuffer = base.source().PixelFormat.RenderingBuffer;
int maxx = (int)pSourceRenderingBuffer.Width() - 1;
int maxy = (int)pSourceRenderingBuffer.Height() - 1;
ISpanInterpolator spanInterpolator = base.interpolator();
unchecked
{
do
{
int x_hr;
int y_hr;
spanInterpolator.Coordinates(out x_hr, out y_hr);
x_hr -= base.filter_dx_int();
y_hr -= base.filter_dy_int();
int x_lr = x_hr >> (int)image_subpixel_scale_e.Shift;
int y_lr = y_hr >> (int)image_subpixel_scale_e.Shift;
uint weight;
fg[0] = fg[1] = fg[2] = fg[3] = (int)image_subpixel_scale_e.Scale * (int)image_subpixel_scale_e.Scale / 2;
x_hr &= (int)image_subpixel_scale_e.Mask;
y_hr &= (int)image_subpixel_scale_e.Mask;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) *
((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * ((int)image_subpixel_scale_e.Scale - y_hr));
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
++y_lr;
fg_ptr = pSourceRenderingBuffer.GetPixelPointer(y_lr) + (x_lr << 2);
weight = (uint)(((int)image_subpixel_scale_e.Scale - x_hr) * y_hr);
fg[0] += weight * fg_ptr[0];
fg[1] += weight * fg_ptr[1];
fg[2] += weight * fg_ptr[2];
fg[3] += weight * fg_ptr[3];
weight = (uint)(x_hr * y_hr);
fg[0] += weight * fg_ptr[4];
fg[1] += weight * fg_ptr[5];
fg[2] += weight * fg_ptr[6];
fg[3] += weight * fg_ptr[7];
fg[0] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[1] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[2] >>= (int)image_subpixel_scale_e.Shift * 2;
fg[3] >>= (int)image_subpixel_scale_e.Shift * 2;
(*span).m_R = (byte)fg[OrderR];
(*span).m_G = (byte)fg[OrderG];
(*span).m_B = (byte)fg[OrderB];
(*span).m_A = (byte)fg[OrderA];
++span;
spanInterpolator.Next();
} while (--len != 0);
}
#if use_timers
Generate_Span.Stop();
#endif
}