drape basics

1 files changed, 79 insertions, 0 deletions

diff --git a/drape/texture.hpp b/drape/texture.hpp
new file mode 100644
index 0000000000..f03724d2a9
--- /dev/null
+++ b/drape/texture.hpp
@@ -0,0 +1,79 @@
+#pragma once
+
+#include "pointers.hpp"
+
+#include "../std/string.hpp"
+
+struct TextureInfo
+{
+  enum PixelType
+  {
+    FullRGBA,  // 8 bit on channel
+    HalfRGBA   // 4 bit on channel
+  };
+
+  TextureInfo()
+    : m_width(0), m_height(0), m_pixelType(FullRGBA)
+  {
+  }
+
+  TextureInfo(uint32_t width, uint32_t height, PixelType type)
+    : m_width(width), m_height(height), m_pixelType(type)
+  {
+  }
+
+  uint32_t m_width;
+  uint32_t m_height;
+  PixelType m_pixelType;
+};
+
+class Texture
+{
+public:
+  Texture(TextureInfo const & info);
+  Texture(TextureInfo const & info, void * data);
+
+  void Update(uint32_t x, uint32_t y, uint32_t width, uint32_t height, void * data);
+
+  uint32_t GetID() const;
+  void Bind();
+
+  TextureInfo const & GetInfo() const;
+
+  bool operator<(const Texture & other) const
+  {
+    return m_textureID < other.m_textureID;
+  }
+
+private:
+  void Init(TextureInfo const & info, void * data);
+
+private:
+  uint32_t m_textureID;
+  TextureInfo m_info;
+};
+
+class TextureBinding
+{
+public:
+  TextureBinding(const string & uniformName, bool isEnabled, uint8_t samplerBlock, WeakPointer<Texture> texture);
+
+  void Bind(int8_t uniformLocation);
+  bool IsEnabled() const;
+  const string & GetUniformName() const;
+  void SetIsEnabled(bool isEnabled);
+  void SetTexture(WeakPointer<Texture> texture);
+
+  bool operator<(const TextureBinding & other) const
+  {
+    return m_isEnabled < other.m_isEnabled
+        || m_samplerBlock < other.m_samplerBlock
+        || m_texture < other.m_texture;
+  }
+
+private:
+  string m_uniformName;
+  bool m_isEnabled;
+  uint8_t m_samplerBlock;
+  WeakPointer<Texture> m_texture;
+};