commit 5843012837cf9e02d4fb5f01cc121fcbc8417423
author Ethan Nicholas <ethannicholas@google.com> Tue Apr 14 09:54:02 2020 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Tue Apr 14 16:07:34 2020 +0000
tree bb1bb89f9237fa74d1328b25c51689d95d0c7e07
parent 505dc179b09c56b2650127218a2b2b4d39c63c71

Add sample(child, matrix) to SkSL.

This allows fragment processors to sample their children with their
local coordinate system transformed by a matrix.

Change-Id: Ifa848bbd85b939bbc5751fec5cf8f89ee904bf39
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282590
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

src/gpu/effects/GrMatrixConvolutionEffect.cpp

diff --git a/src/gpu/effects/GrMatrixConvolutionEffect.cpp b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
index 954950f..cf37414 100644
--- a/src/gpu/effects/GrMatrixConvolutionEffect.cpp
+++ b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
@@ -63,7 +63,8 @@
     const char* bias = uniformHandler->getUniformCStr(fBiasUni);
 
     GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
-    SkString coords2D = fragBuilder->ensureCoords2D(args.fTransformedCoords[0].fVaryingPoint);
+    SkString coords2D = fragBuilder->ensureCoords2D(args.fTransformedCoords[0].fVaryingPoint,
+                                                    mce.sampleMatrix());
     fragBuilder->codeAppend("half4 sum = half4(0, 0, 0, 0);");
     fragBuilder->codeAppendf("float2 coord = %s - %s * %s;", coords2D.c_str(), kernelOffset, imgInc);
     fragBuilder->codeAppend("half4 c;");