Create GrOptDrawState before recording draw in GrInOrderDrawBuffer

src/gpu/GrPendingFragmentStage.h

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrPendingProcessorStage_DEFINED
+#define GrPendingProcessorStage_DEFINED
+
+#include "GrFragmentStage.h"
+#include "GrCoordTransform.h"
+#include "GrFragmentProcessor.h"
+#include "GrPendingProgramElement.h"
+#include "SkMatrix.h"
+
+/**
+ * This a baked variant of GrFragmentStage, as recorded in GrOptDrawState.
+ */
+class GrPendingFragmentStage {
+public:
+    GrPendingFragmentStage(const GrFragmentStage& stage, bool ignoreMatrix)
+    : fProc(stage.getProcessor())
+    , fCoordChangeMatrix(ignoreMatrix ? SkMatrix::I() : stage.getCoordChangeMatrix()) {
+    }
+
+    GrPendingFragmentStage(const GrPendingFragmentStage& that) { *this = that; }
+
+    GrPendingFragmentStage& operator=(const GrPendingFragmentStage& that) {
+        fProc.reset(that.fProc.get());
+        fCoordChangeMatrix = that.fCoordChangeMatrix;
+        return *this;
+    }
+
+    bool operator==(const GrPendingFragmentStage& that) const {
+        return this->getProcessor()->isEqual(*that.getProcessor()) &&
+               fCoordChangeMatrix == that.fCoordChangeMatrix;
+    }
+
+    bool operator!=(const GrPendingFragmentStage& that) const { return !(*this == that); }
+
+    const SkMatrix& getCoordChangeMatrix() const { return fCoordChangeMatrix; }
+
+    /**
+     * For a coord transform on the fragment processor, does it or the coord change matrix (if
+     * relevant) contain perspective?
+     */
+    bool isPerspectiveCoordTransform(int matrixIndex) const {
+        const GrCoordTransform& coordTransform = this->getProcessor()->coordTransform(matrixIndex);
+        uint32_t type = coordTransform.getMatrix().getType();
+        if (kLocal_GrCoordSet == coordTransform.sourceCoords()) {
+            type |= this->getCoordChangeMatrix().getType();
+        }
+
+        return SkToBool(SkMatrix::kPerspective_Mask & type);
+    }
+
+    const char* name() const { return fProc->name(); }
+
+    const GrFragmentProcessor* getProcessor() const { return fProc.get(); }
+
+protected:
+    GrPendingProgramElement<const GrFragmentProcessor>  fProc;
+    SkMatrix                                            fCoordChangeMatrix;
+};
+#endif