A simple change to move a bunch of stuff out of Gr*Geometry.h

BUG=skia:

Review URL: https://codereview.chromium.org/920863002

1 files changed, 67 insertions, 0 deletions

diff --git a/src/gpu/GrPrimitiveProcessor.cpp b/src/gpu/GrPrimitiveProcessor.cpp
new file mode 100644
index 0000000000..673656821b
--- /dev/null
+++ b/src/gpu/GrPrimitiveProcessor.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrPrimitiveProcessor.h"
+
+#include "GrCoordTransform.h"
+
+/**
+ * The key for an individual coord transform is made up of a matrix type, a precision, and a bit
+ * that indicates the source of the input coords.
+ */
+enum {
+    kMatrixTypeKeyBits   = 1,
+    kMatrixTypeKeyMask   = (1 << kMatrixTypeKeyBits) - 1,
+
+    kPrecisionBits       = 2,
+    kPrecisionShift      = kMatrixTypeKeyBits,
+
+    kPositionCoords_Flag = (1 << (kPrecisionShift + kPrecisionBits)),
+    kDeviceCoords_Flag   = kPositionCoords_Flag + kPositionCoords_Flag,
+
+    kTransformKeyBits    = kMatrixTypeKeyBits + kPrecisionBits + 2,
+};
+
+GR_STATIC_ASSERT(kHigh_GrSLPrecision < (1 << kPrecisionBits));
+
+/**
+ * We specialize the vertex code for each of these matrix types.
+ */
+enum MatrixType {
+    kNoPersp_MatrixType  = 0,
+    kGeneral_MatrixType  = 1,
+};
+
+uint32_t
+GrPrimitiveProcessor::getTransformKey(const SkTArray<const GrCoordTransform*, true>& coords) const {
+    uint32_t totalKey = 0;
+    for (int t = 0; t < coords.count(); ++t) {
+        uint32_t key = 0;
+        const GrCoordTransform* coordTransform = coords[t];
+        if (coordTransform->getMatrix().hasPerspective()) {
+            key |= kGeneral_MatrixType;
+        } else {
+            key |= kNoPersp_MatrixType;
+        }
+
+        if (kLocal_GrCoordSet == coordTransform->sourceCoords() &&
+            !this->hasExplicitLocalCoords()) {
+            key |= kPositionCoords_Flag;
+        } else if (kDevice_GrCoordSet == coordTransform->sourceCoords()) {
+            key |= kDeviceCoords_Flag;
+        }
+
+        GR_STATIC_ASSERT(kGrSLPrecisionCount <= (1 << kPrecisionBits));
+        key |= (coordTransform->precision() << kPrecisionShift);
+
+        key <<= kTransformKeyBits * t;
+
+        SkASSERT(0 == (totalKey & key)); // keys for each transform ought not to overlap
+        totalKey |= key;
+    }
+    return totalKey;
+}