88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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#ifndef TEXTURE_H
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#define TEXTURE_H
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#include <utility>
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#include "k4aimgui_all.h"
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#include "k4apixel.h"
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namespace viewer
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{
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// A simple wrapper for OpenGL textures.
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// Textures are not resizeable, but can have their contents updated any number of times.
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//
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class Texture
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{
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public:
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// Updates the image stored in the texture with data.
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// The data is expected to be formatted as Width * Height pixels formatted
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// as BGRA pixels represented by uint8_t's.
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//
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// The data you pass to it must be of the same size as the dimensions used
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// to construct the texture.
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//
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void Update(const BgraPixel *data);
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// Get the OpenGL texture name.
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// OpenGL texture names are just uints that OpenGL uses as opaque pointers.
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//
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inline GLuint Name() const
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{
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return m_name;
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}
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// Gets the width of the texture.
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//
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inline int Width() const
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{
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return m_width;
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}
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// Gets the height of the texture.
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//
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inline int Height() const
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{
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return m_height;
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}
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~Texture();
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// In the interest of simplicity, we don't refcount textures, so
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// copying doesn't work.
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//
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Texture(const Texture &) = delete;
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Texture &operator=(const Texture &) = delete;
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// Textures are moveable.
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//
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Texture(Texture &&other);
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Texture &operator=(Texture &&other);
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private:
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// Creating a texture before the viewer window has been initialized will fail,
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// so we make the viewer responsible for creating texture instances.
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//
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// Creates a texture with the specified dimensions, including allocating space
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// on the GPU. Use Update() to update the image stored in the texture.
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//
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friend class ViewerWindow;
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Texture(int width, int height);
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// Deletes the wrapped texture.
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//
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void DeleteTexture();
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static constexpr GLuint InvalidTextureName = 0;
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GLuint m_name = InvalidTextureName;
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int m_width = 0;
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int m_height = 0;
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};
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} // namespace viewer
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#endif
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