1 files changed, 55 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/sksl/tracing/SkSLDebugInfo.h b/gfx/skia/skia/src/sksl/tracing/SkSLDebugInfo.h
new file mode 100644
index 0000000000..74b7a430d4
--- /dev/null
+++ b/gfx/skia/skia/src/sksl/tracing/SkSLDebugInfo.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSLDEBUGINFO
+#define SKSLDEBUGINFO
+
+#include "src/sksl/ir/SkSLType.h"
+
+#include <cstdint>
+#include <string>
+
+namespace SkSL {
+
+struct TraceInfo {
+    enum class Op {
+        kLine,  /** data: line number, (unused) */
+        kVar,   /** data: slot, value */
+        kEnter, /** data: function index, (unused) */
+        kExit,  /** data: function index, (unused) */
+        kScope, /** data: scope delta, (unused) */
+    };
+    Op op;
+    int32_t data[2];
+};
+
+struct SlotDebugInfo {
+    /** The full name of this variable (without component), e.g. `myArray[3].myStruct.myVector` */
+    std::string             name;
+    /** The dimensions of this variable: 1x1 is a scalar, Nx1 is a vector, NxM is a matrix. */
+    uint8_t                 columns = 1, rows = 1;
+    /** Which component of the variable is this slot? (e.g. `vec4.z` is component 2) */
+    uint8_t                 componentIndex = 0;
+    /** Complex types (arrays/structs) can be tracked as a "group" of adjacent slots. */
+    int                     groupIndex = 0;
+    /** What kind of numbers belong in this slot? */
+    SkSL::Type::NumberKind  numberKind = SkSL::Type::NumberKind::kNonnumeric;
+    /** Where is this variable located in the program? */
+    int                     line = 0;
+    Position                pos = {};
+    /** If this slot holds a function's return value, contains 1; if not, -1. */
+    int                     fnReturnValue = -1;
+};
+
+struct FunctionDebugInfo {
+    /** Full function declaration: `float myFunction(half4 color)`) */
+    std::string             name;
+};
+
+}  // namespace SkSL
+
+#endif