New API for computing optimization invariants.

src/gpu/batches/GrDrawBatch.cpp

Index: src/gpu/batches/GrDrawBatch.cpp
diff --git a/src/gpu/batches/GrDrawBatch.cpp b/src/gpu/batches/GrDrawBatch.cpp
index 43ef2ec64bb107372794d7d0efa6623e2be9debc..86df82fa05a1ba2c4e2b5eca90e375339d3c8169 100644
--- a/src/gpu/batches/GrDrawBatch.cpp
+++ b/src/gpu/batches/GrDrawBatch.cpp
@@ -15,6 +15,14 @@ GrDrawBatch::~GrDrawBatch() {
     }
 }
 
+void GrDrawBatch::getBatchToXPOverrides(GrBatchToXPOverrides &override) const {
+    GrInitInvariantOutput color;
+    GrInitInvariantOutput coverage;
+    computeBatchToXPOverrides(&color, &coverage, &override.fUsePLSDstRead);

[joshualitt, 2015/11/23 19:09:29]

this->
also struct

+    override.fColorPOI.initUsingInvariantOutput(color);
+    override.fCoveragePOI.initUsingInvariantOutput(coverage);
+}
+
 bool GrDrawBatch::installPipeline(const GrPipeline::CreateArgs& args) {
     GrPipelineOptimizations opts;
     void* location = fPipelineStorage.get();