1 files changed, 92 insertions, 0 deletions
diff --git a/third_party/rust/wpf-gpu-raster/src/geometry_sink.rs b/third_party/rust/wpf-gpu-raster/src/geometry_sink.rs
new file mode 100644
index 0000000000..3282f10a15
--- /dev/null
+++ b/third_party/rust/wpf-gpu-raster/src/geometry_sink.rs
@@ -0,0 +1,92 @@
+use crate::aacoverage::CCoverageInterval;
+use crate::nullable_ref::Ref;
+use crate::types::*;
+
+pub trait IGeometrySink
+{
+    //
+    // Aliased geometry output
+    //
+/*
+    virtual HRESULT AddVertex(
+        __in_ecount(1) const MilPoint2F &ptPosition,
+            // In: Vertex coordinates
+        __out_ecount(1) WORD *pidxOut
+            // Out: Index of vertex
+        ) PURE;
+
+    virtual HRESULT AddIndexedVertices(
+        UINT cVertices,
+            // In: number of vertices
+        __in_bcount(cVertices*uVertexStride) const void *pVertexBuffer,
+            // In: vertex buffer containing the vertices
+        UINT uVertexStride,
+            // In: size of each vertex
+        MilVertexFormat mvfFormat,
+            // In: format of each vertex
+        UINT cIndices,
+            // In: Number of indices
+        __in_ecount(cIndices) const UINT *puIndexBuffer
+            // In: index buffer                                                             
+        ) PURE;
+
+    virtual void SetTransformMapping(
+        __in_ecount(1) const MILMatrix3x2 &mat2DTransform
+        ) PURE;
+
+    virtual HRESULT AddTriangle(
+        DWORD idx1,
+            // In: Index of triangle's first vertex
+        DWORD idx2,
+            // In: Index of triangle's second vertex
+        DWORD idx3
+            // In: Index of triangle's third vertex
+        ) PURE;
+
+    //
+    // Trapezoidal AA geometry output
+    //
+*/
+    fn AddComplexScan(&mut self,
+        nPixelY: INT,
+            // In: y coordinate in pixel space
+            pIntervalSpanStart: Ref<CCoverageInterval>
+            // In: coverage segments
+        ) -> HRESULT;
+    
+    fn AddTrapezoid(
+        &mut self,
+        rYMin: f32,
+            // In: y coordinate of top of trapezoid
+        rXLeftYMin: f32,
+            // In: x coordinate for top left
+        rXRightYMin: f32,
+            // In: x coordinate for top right
+        rYMax: f32,
+            // In: y coordinate of bottom of trapezoid
+        rXLeftYMax: f32,
+            // In: x coordinate for bottom left
+        rXRightYMax: f32,
+            // In: x coordinate for bottom right
+        rXDeltaLeft: f32,
+            // In: trapezoid expand radius
+        rXDeltaRight: f32
+            // In: trapezoid expand radius
+        ) -> HRESULT;
+
+    fn IsEmpty(&self) -> bool;
+    /*
+    virtual HRESULT AddParallelogram(
+        __in_ecount(4) const MilPoint2F *rgPosition
+        ) PURE;
+    
+    //
+    // Query sink status
+    //
+
+    // Some geometry generators don't actually know if they have output
+    // any triangles, so they need to get this information from the geometry sink.
+
+    virtual BOOL IsEmpty() PURE;
+*/
+}