Add XferProcessor factory in GrPaint and GrDrawState.
In this CL the XP should have zero effect on the actual rendering pipeline.
BUG=skia:
Review URL: https://codereview.chromium.org/751283002
diff --git a/src/gpu/GrDistanceFieldTextContext.cpp b/src/gpu/GrDistanceFieldTextContext.cpp
index f5983ac..f296244 100755
--- a/src/gpu/GrDistanceFieldTextContext.cpp
+++ b/src/gpu/GrDistanceFieldTextContext.cpp
@@ -628,9 +628,11 @@
// Set draw state
if (fUseLCDText) {
GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor);
- if (kOne_GrBlendCoeff != fPaint.getSrcBlendCoeff() ||
- kISA_GrBlendCoeff != fPaint.getDstBlendCoeff() ||
- fPaint.numColorStages()) {
+
+ // TODO: move supportsRGBCoverage check to setupCoverageEffect and only add LCD
+ // processor if the xp can support it. For now we will simply assume that if
+ // fUseLCDText is true, then we have a known color output.
+ if (!drawState.getXPFactory()->supportsRGBCoverage(0, kRGBA_GrColorComponentFlags)) {
SkDebugf("LCD Text will not draw correctly.\n");
}
SkASSERT(!drawState.hasColorVertexAttribute());