83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
#pragma once
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#include <mbgl/gfx/types.hpp>
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#include <mbgl/util/image.hpp>
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#include <mbgl/util/rect.hpp>
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#include <mapbox/shelf-pack.hpp>
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#include <optional>
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#include <mutex>
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namespace mbgl {
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namespace gfx {
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class Context;
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class Texture2D;
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using Texture2DPtr = std::shared_ptr<gfx::Texture2D>;
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class TextureHandle {
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public:
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TextureHandle(const mapbox::Bin& bin)
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: id(bin.id),
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rectangle(bin.x, bin.y, bin.w, bin.h),
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needsUpload(bin.refcount() == 1) {};
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~TextureHandle() = default;
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int32_t getId() const { return id; }
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const Rect<uint16_t>& getRectangle() const { return rectangle; }
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bool isUploadNeeded() const { return needsUpload; }
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bool operator==(const TextureHandle& other) const { return (id == other.id); }
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struct Hasher {
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size_t operator()(const TextureHandle& texHandle) const { return texHandle.id; }
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};
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private:
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int32_t id = 0;
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Rect<uint16_t> rectangle;
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bool needsUpload = false;
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friend class DynamicTexture;
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};
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class DynamicTexture {
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public:
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DynamicTexture(Context& context, Size size, TexturePixelType pixelType);
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~DynamicTexture() = default;
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const Texture2DPtr& getTexture() const;
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TexturePixelType getPixelFormat() const;
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bool isEmpty() const;
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std::optional<TextureHandle> reserveSize(const Size& size, int32_t uniqueId);
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void uploadImage(const uint8_t* pixelData, TextureHandle& texHandle);
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template <typename Image>
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std::optional<TextureHandle> addImage(const Image& image, int32_t uniqueId = -1) {
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return addImage(image.data ? image.data.get() : nullptr, image.size, uniqueId);
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}
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std::optional<TextureHandle> addImage(const uint8_t* pixelData, const Size& imageSize, int32_t uniqueId = -1);
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void uploadDeferredImages();
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void removeTexture(const TextureHandle& texHandle);
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using ImagesToUpload = std::unordered_map<TextureHandle, std::unique_ptr<uint8_t[]>, TextureHandle::Hasher>;
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private:
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Texture2DPtr texture;
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mapbox::ShelfPack shelfPack;
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int numTextures = 0;
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bool deferredCreation = false;
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ImagesToUpload imagesToUpload;
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std::mutex mutex;
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};
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#define MLN_DEFER_UPLOAD_ON_RENDER_THREAD \
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(MLN_RENDER_BACKEND_OPENGL || MLN_RENDER_BACKEND_VULKAN || MLN_RENDER_BACKEND_WEBGPU)
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} // namespace gfx
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} // namespace mbgl
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