public void RenderStroke(ref Paint paint, ref Scissor scissor,
float fringe, float strokeWidth, ArraySegment <Path> paths)
{
for (var i = 0; i < paths.Count; ++i)
{
var path = paths.Array[paths.Offset + i];
if (path.Stroke != null)
{
var stroke = path.Stroke.Value;
for (var j = 0; j < stroke.Count; ++j)
{
_vertexes.Add(stroke.Array[stroke.Offset + j]);
}
RenderTriangles(ref paint, ref scissor,
strokeWidth, fringe, -1.0f,
paint.Image != 0 ? RenderingType.FillImage : RenderingType.FillGradient,
_vertexes.ToArraySegment(),
PrimitiveType.TriangleStrip,
false);
}
}
}
public void RenderTriangles(ref Paint paint, ref Scissor scissor, ArraySegment <Vertex> verts)
{
RenderTriangles(ref paint, ref scissor,
1.0f, 1.0f, -1.0f,
RenderingType.Triangles,
verts,
PrimitiveType.TriangleList,
false);
}
public void RenderFill(ref Paint paint, ref Scissor scissor, float fringe, Bounds bounds,
ArraySegment <Path> paths)
{
var isConvex = paths.Count == 1 && paths.Array[paths.Offset].Convex == 1;
RenderingType renderingType;
if (isConvex)
{
renderingType = paint.Image != 0 ? RenderingType.FillImage : RenderingType.FillGradient;
}
else
{
_device.BlendState = _blendStateNoDraw;
_device.DepthStencilState = _stencilStateFill1;
renderingType = RenderingType.Simple;
}
for (var i = 0; i < paths.Count; ++i)
{
var path = paths.Array[paths.Offset + i];
if (path.Fill != null)
{
var fill = path.Fill.Value;
for (var j = 0; j < fill.Count; ++j)
{
_vertexes.Add(fill.Array[fill.Offset + j]);
}
SetIndexBufferFill(fill.Count, (fill.Count - 2) * 3);
RenderTriangles(ref paint, ref scissor, fringe, fringe, -1.0f,
renderingType, _vertexes.ToArraySegment(), PrimitiveType.TriangleList, true);
}
}
if (!isConvex)
{
_device.BlendState = BlendState.AlphaBlend;
_device.DepthStencilState = _stencilStateFill2;
_vertexes.Add(new Vertex(bounds.b1, bounds.b2, 0.5f, 1.0f));
_vertexes.Add(new Vertex(bounds.b3, bounds.b2, 0.5f, 1.0f));
_vertexes.Add(new Vertex(bounds.b1, bounds.b4, 0.5f, 1.0f));
_vertexes.Add(new Vertex(bounds.b3, bounds.b4, 0.5f, 1.0f));
RenderTriangles(ref paint, ref scissor, fringe, fringe, -1.0f,
RenderingType.FillGradient, _vertexes.ToArraySegment(), PrimitiveType.TriangleStrip, false);
_device.DepthStencilState = DepthStencilState.None;
}
}
private void RenderTriangles(ref Paint paint,
ref Scissor scissor,
float width, float fringe, float strokeThr,
RenderingType renderingType,
ArraySegment <Vertex> verts,
PrimitiveType primitiveType,
bool indexed)
{
if (verts.Count <= 0 ||
indexed && _indexesCount <= 0)
{
return;
}
var innerColor = premultiplyColor(paint.InnerColor);
var outerColor = premultiplyColor(paint.OuterColor);
_strokeMult = (width * 0.5f + fringe * 0.5f) / fringe;
if (scissor.Extent.X < -0.5f || scissor.Extent.Y < -0.5f)
{
_scissorTransform.Zero();
_scissorExt.X = 1.0f;
_scissorExt.Y = 1.0f;
_scissorScale.X = 1.0f;
_scissorScale.Y = 1.0f;
}
else
{
_scissorTransform = scissor.Transform.BuildInverse();
_scissorExt.X = scissor.Extent.X;
_scissorExt.Y = scissor.Extent.Y;
_scissorScale.X =
(float)Math.Sqrt(scissor.Transform.T1 * scissor.Transform.T1 +
scissor.Transform.T3 * scissor.Transform.T3) / fringe;
_scissorScale.Y =
(float)Math.Sqrt(scissor.Transform.T2 * scissor.Transform.T2 +
scissor.Transform.T4 * scissor.Transform.T4) / fringe;
}
var transform = paint.Transform.BuildInverse();
var transformMatrix = transform.ToMatrix();
_viewSizeParam.SetValue(new Vector2(_device.PresentationParameters.Bounds.Width,
_device.PresentationParameters.Bounds.Height));
_scissorMatParam.SetValue(_scissorTransform.ToMatrix());
_scissorExtParam.SetValue(_scissorExt);
_scissorScaleParam.SetValue(_scissorScale);
_paintMatParam.SetValue(transformMatrix);
_extentParam.SetValue(new Vector4(paint.Extent.X, paint.Extent.Y, 0.0f, 0.0f));
_radiusParam.SetValue(new Vector4(paint.Radius, 0.0f, 0.0f, 0.0f));
_featherParam.SetValue(new Vector4(paint.Feather, 0.0f, 0.0f, 0.0f));
_innerColParam.SetValue(innerColor.ToVector4());
_outerColParam.SetValue(outerColor.ToVector4());
// _effect.Parameters["strokeMult"].SetValue(new Vector4(_strokeMult, 0.0f, 0.0f, 0.0f));
if (paint.Image > 0)
{
var texture = GetTextureById(paint.Image);
_textureParam.SetValue(texture);
}
var technique = _techniques[(int)renderingType];
_effect.CurrentTechnique = technique;
foreach (var pass in _effect.CurrentTechnique.Passes)
{
pass.Apply();
if (indexed)
{
_device.DrawUserIndexedPrimitives(primitiveType, verts.Array, verts.Offset, verts.Count,
_indexes, 0, _indexesCount / 3);
}
else
{
var primitiveCount =
primitiveType == PrimitiveType.TriangleList ? verts.Count / 3 : verts.Count - 2;
_device.DrawUserPrimitives(primitiveType, verts.Array, verts.Offset, primitiveCount);
}
}
_vertexes.Clear();
}
