1 files changed, 75 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/shaders/SkPictureShader.h b/gfx/skia/skia/src/shaders/SkPictureShader.h
new file mode 100644
index 0000000000..3f2942bc9a
--- /dev/null
+++ b/gfx/skia/skia/src/shaders/SkPictureShader.h
@@ -0,0 +1,75 @@
+/*
+ * 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 SkPictureShader_DEFINED
+#define SkPictureShader_DEFINED
+
+#include "include/core/SkTileMode.h"
+#include "src/shaders/SkShaderBase.h"
+#include <atomic>
+
+class SkArenaAlloc;
+class SkBitmap;
+class SkPicture;
+
+/*
+ * An SkPictureShader can be used to draw SkPicture-based patterns.
+ *
+ * The SkPicture is first rendered into a tile, which is then used to shade the area according
+ * to specified tiling rules.
+ */
+class SkPictureShader : public SkShaderBase {
+public:
+    static sk_sp<SkShader> Make(sk_sp<SkPicture>, SkTileMode, SkTileMode, SkFilterMode,
+                                const SkMatrix*, const SkRect*);
+
+#if defined(SK_GANESH)
+    std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&,
+                                                             const MatrixRec&) const override;
+#endif
+#if defined(SK_GRAPHITE)
+    void addToKey(const skgpu::graphite::KeyContext&,
+                  skgpu::graphite::PaintParamsKeyBuilder*,
+                  skgpu::graphite::PipelineDataGatherer*) const override;
+#endif
+
+    SkPictureShader(sk_sp<SkPicture>, SkTileMode, SkTileMode, SkFilterMode, const SkRect*);
+
+protected:
+    SkPictureShader(SkReadBuffer&);
+    void flatten(SkWriteBuffer&) const override;
+    bool appendStages(const SkStageRec&, const MatrixRec&) const override;
+    skvm::Color program(skvm::Builder*,
+                        skvm::Coord device,
+                        skvm::Coord local,
+                        skvm::Color paint,
+                        const MatrixRec&,
+                        const SkColorInfo& dst,
+                        skvm::Uniforms* uniforms,
+                        SkArenaAlloc* alloc) const override;
+
+#ifdef SK_ENABLE_LEGACY_SHADERCONTEXT
+    Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override;
+#endif
+
+private:
+    SK_FLATTENABLE_HOOKS(SkPictureShader)
+
+    sk_sp<SkShader> rasterShader(const SkMatrix&,
+                                 SkColorType dstColorType,
+                                 SkColorSpace* dstColorSpace,
+                                 const SkSurfaceProps& props) const;
+
+    sk_sp<SkPicture>    fPicture;
+    SkRect              fTile;
+    SkTileMode          fTmx, fTmy;
+    SkFilterMode        fFilter;
+
+    using INHERITED = SkShaderBase;
+};
+
+#endif // SkPictureShader_DEFINED