static void GLBlendSolidHSpan(
int x1, int len, bool isFillMode, AggCoordList3f lineBuffer, int srcColorAlpha,
byte[] covers, int coversIndex)
{
if (isFillMode)
{
unchecked
{
int xpos = x1;
switch (len)
{
case 1:
{
lineBuffer.AddCoord(xpos - 1, 0);
//just one pix ,
//alpha change ***
int alpha = ((srcColorAlpha) * ((covers[coversIndex]) + 1)) >> 8;
//single px
lineBuffer.AddCoord(xpos, alpha);
xpos++;
coversIndex++;
//lineBuffer.AddCoord(xpos, 0);
} break;
default:
{
lineBuffer.AddCoord(xpos - 1, 0);
int alpha = 0;
do
{
//alpha change ***
alpha = ((srcColorAlpha) * ((covers[coversIndex]) + 1)) >> 8;
//single point
lineBuffer.AddCoord(xpos, alpha);
xpos++;
coversIndex++;
}while (--len != 0);
//close with single px
lineBuffer.AddCoord(xpos, 0);
} break;
}
}
}
else
{
unchecked
{
int xpos = x1;
switch (len)
{
case 1:
{
lineBuffer.AddCoord(xpos - 1, 0);
//just one pix ,
//alpha change ***
int alpha = ((srcColorAlpha) * ((covers[coversIndex]) + 1)) >> 8;
//single px
lineBuffer.AddCoord(xpos, alpha);
xpos++;
coversIndex++;
//lineBuffer.AddCoord(xpos, 0);
} break;
default:
{
lineBuffer.AddCoord(xpos - 1, 0);
int alpha = 0;
do
{
//alpha change ***
alpha = ((srcColorAlpha) * ((covers[coversIndex]) + 1)) >> 8;
//single point
lineBuffer.AddCoord(xpos, alpha);
xpos++;
coversIndex++;
}while (--len != 0);
//close with single px
lineBuffer.AddCoord(xpos, 0);
} break;
}
}
}
}
static void GLBlendHLine(int x1, int x2, bool isFillMode, AggCoordList3f lineBuffer, int srcColorAlpha, byte cover)
{
//if (color.A == 0) { return; }
int len = x2 - x1 + 1;
int alpha = (((int)(srcColorAlpha) * (cover + 1)) >> 8);
if (isFillMode)
{
//same alpha...
if (alpha == BASE_MASK)
{
switch (len)
{
case 0:
{
} break;
case 1:
{
//single px
lineBuffer.AddCoord(x1 - 1, alpha);
lineBuffer.AddCoord(x1, alpha);
lineBuffer.AddCoord(x1 + 1, alpha);
} break;
default:
{
//var c = PixelFarm.Drawing.Color.FromArgb(alpha, color).ToARGB();
//lineBuffer.AddVertex(new VertexV2S1Cvr(x1, y, alpha));
//lineBuffer.AddVertex(new VertexV2S1Cvr(x2 + 1, y, alpha));
lineBuffer.AddCoord(x1 - 1, alpha);
lineBuffer.AddCoord(x1, alpha);
lineBuffer.AddCoord(x2 + 1, alpha);
//lineBuffer.AddCoord(x2 + 2, 0);
//lineBuffer.AddCoord(x2 + 2, 0);
} break;
}
}
else
{
//same alpha
lineBuffer.AddCoord(x1 - 1, alpha);
lineBuffer.AddCoord(x1, alpha);
lineBuffer.AddCoord(x2 + 1, alpha);
//lineBuffer.AddCoord(x2 + 2, 0);
}
}
else
{
//same alpha...
if (alpha == BASE_MASK)
{
switch (len)
{
case 0:
{
} break;
case 1:
{
//single px
lineBuffer.AddCoord(x1 - 1, 0);
lineBuffer.AddCoord(x1, alpha);
//lineBuffer.AddCoord(x1 + 1, alpha);
} break;
default:
{
//var c = PixelFarm.Drawing.Color.FromArgb(alpha, color).ToARGB();
//lineBuffer.AddVertex(new VertexV2S1Cvr(x1, y, alpha));
//lineBuffer.AddVertex(new VertexV2S1Cvr(x2 + 1, y, alpha));
lineBuffer.AddCoord(x1 - 1, 0);
lineBuffer.AddCoord(x1, alpha);
lineBuffer.AddCoord(x2 + 1, alpha);
lineBuffer.AddCoord(x2 + 2, 0);
} break;
}
}
else
{
//same alpha
lineBuffer.AddCoord(x1 - 1, 0);
lineBuffer.AddCoord(x1, alpha);
lineBuffer.AddCoord(x2 + 1, alpha);
lineBuffer.AddCoord(x2 + 2, 0);
}
}
}
