Fix handling of MaskFilter matrices

1) extend GrFPArgs to track pre/post local matrices, add helpers for
   creating pre/post wrapper args

2) add a SkShaderBase helper (totalLocalMatrix) to centralize the LM
   sandwich logic.

3) update call sites to use the above

4) rename SkMatrixFilter::makeWithLocalMatrix -> makeWithMatrix, to
   disambiguate vs. SkShader::makeWithLocalMatrix.

BUG=skia:7744

Change-Id: Ib2b7b007e6924979b00649dde7c94ef4b34771f1
Reviewed-on: https://skia-review.googlesource.com/119330
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index b4cb22bd10..99465f620b 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -514,7 +514,7 @@ bool SkPaintToGrPaintWithTexture(GrContext* context,
     if (textureIsAlphaOnly) {
         if (const auto* shader = as_SB(paint.getShader())) {
             shaderFP = shader->asFragmentProcessor(GrFPArgs(
-                    context, &viewM, nullptr, paint.getFilterQuality(), &colorSpaceInfo));
+                    context, &viewM, paint.getFilterQuality(), &colorSpaceInfo));
             if (!shaderFP) {
                 return false;
             }