re-land of skslc type constructor cleanups

BUG=skia:

Change-Id: I953be07e2389dd4a9e7dcce0ddfd7505b309bda1
Reviewed-on: https://skia-review.googlesource.com/8265
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/src/sksl/SkSLSPIRVCodeGenerator.h b/src/sksl/SkSLSPIRVCodeGenerator.h
index 562bf279e9..fad7e31d80 100644
--- a/src/sksl/SkSLSPIRVCodeGenerator.h
+++ b/src/sksl/SkSLSPIRVCodeGenerator.h
@@ -147,7 +147,21 @@ private:
     SpvId writeFloatConstructor(const Constructor& c, SkWStream& out);
 
     SpvId writeIntConstructor(const Constructor& c, SkWStream& out);
-    
+
+    /**
+     * Writes a matrix with the diagonal entries all equal to the provided expression, and all other
+     * entries equal to zero.
+     */
+    void writeUniformScaleMatrix(SpvId id, SpvId diagonal, const Type& type, SkWStream& out);
+
+    /**
+     * Writes a potentially-different-sized copy of a matrix. Entries which do not exist in the
+     * source matrix are filled with zero; entries which do not exist in the destination matrix are
+     * ignored.
+     */
+    void writeMatrixCopy(SpvId id, SpvId src, const Type& srcType, const Type& dstType,
+                         SkWStream& out);
+
     SpvId writeMatrixConstructor(const Constructor& c, SkWStream& out);
 
     SpvId writeVectorConstructor(const Constructor& c, SkWStream& out);