Initial commit.

Framework/external/embree/tutorials/common/scenegraph/texture.h

@@ -0,0 +1,71 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#if defined(ISPC)
+
+enum TEXTURE_FORMAT {
+    Texture_RGBA8        = 1,
+    Texture_RGB8         = 2,
+    Texture_FLOAT32      = 3,
+  };
+
+struct Texture {
+  int width;
+  int height;
+  int format;
+  int bytesPerTexel;
+  int width_mask;
+  int height_mask;
+  void* data;
+};
+
+#else
+
+#include "../default.h"
+#include "../image/image.h"
+
+namespace embree
+{
+  struct Texture // FIXME: should be derived from SceneGraph::Node
+  {
+    ALIGNED_STRUCT_USM_(16);
+
+    enum Format {
+      INVALID = 0,
+      RGBA8   = 1,
+      RGB8    = 2,
+      FLOAT32 = 3,
+    };
+    
+  public:
+    Texture (); 
+    Texture (Ref<Image> image, const std::string fileName); 
+    Texture (unsigned width, unsigned height, const Format format, const char* in = nullptr);
+    ~Texture ();
+
+  private:
+    Texture (const Texture& other) DELETED; // do not implement
+    Texture& operator= (const Texture& other) DELETED; // do not implement
+
+  public:
+    static const char* format_to_string(const Format format);
+    static Format string_to_format(const std::string& str);
+    static unsigned getFormatBytesPerTexel(const Format format);
+
+    static std::shared_ptr<Texture> load(const FileName& fileName);
+    static void clearTextureCache();
+    
+  public:
+    unsigned width;
+    unsigned height;    
+    Format format;
+    unsigned bytesPerTexel;
+    unsigned width_mask;
+    unsigned height_mask;
+    void* data;
+    std::string fileName;
+  };
+}
+#endif