94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
#pragma once
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#include <mbgl/shaders/shader_defines.hpp>
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#include <memory>
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#include <vector>
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#include <array>
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namespace mbgl {
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namespace gfx {
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class Context;
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class UniformBuffer;
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class UniformBufferArray;
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class RenderPass;
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using UniformBufferPtr = std::shared_ptr<UniformBuffer>;
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using UniqueUniformBuffer = std::unique_ptr<UniformBuffer>;
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using UniqueUniformBufferArray = std::unique_ptr<UniformBufferArray>;
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class UniformBuffer {
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// Can only be created by platform specific implementations
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protected:
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UniformBuffer(std::size_t size_)
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: size(size_) {}
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UniformBuffer(const UniformBuffer& other)
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: size(other.size) {}
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UniformBuffer(UniformBuffer&& other)
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: size(other.size) {}
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public:
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virtual ~UniformBuffer() = default;
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virtual void update(const void* data, std::size_t dataSize) = 0;
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std::size_t getSize() const { return size; }
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UniformBuffer& operator=(const UniformBuffer&) = delete;
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protected:
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UniformBuffer& operator=(UniformBuffer&& other) {
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size = other.size;
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return *this;
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}
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protected:
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std::size_t size;
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};
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/// Stores a collection of uniform buffers by id
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class UniformBufferArray {
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public:
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UniformBufferArray() = default;
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UniformBufferArray(UniformBufferArray&&);
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// Would need to use the virtual assignment operator
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UniformBufferArray(const UniformBufferArray&) = delete;
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virtual ~UniformBufferArray() = default;
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/// Number of maximum allocated elements
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std::size_t allocatedSize() const { return uniformBufferVector.size(); }
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/// Get an uniform buffer element.
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/// Returns a pointer to the element on success, or null if the uniform buffer doesn't exists.
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const std::shared_ptr<UniformBuffer>& get(const size_t id) const;
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/// Set a new uniform buffer element or replace the existing one.
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virtual const std::shared_ptr<UniformBuffer>& set(const size_t id, std::shared_ptr<UniformBuffer> uniformBuffer);
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/// Create and add a new buffer or update an existing one
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void createOrUpdate(const size_t id, const std::vector<uint8_t>& data, gfx::Context&, bool persistent = false);
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virtual void createOrUpdate(
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const size_t id, const void* data, std::size_t size, gfx::Context&, bool persistent = false);
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template <typename T>
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void createOrUpdate(const size_t id, const T* data, gfx::Context& context, bool persistent = false)
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requires(!std::is_pointer_v<T>)
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{
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createOrUpdate(id, data, sizeof(T), context, persistent);
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}
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virtual void bind(gfx::RenderPass& renderPass) = 0;
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UniformBufferArray& operator=(UniformBufferArray&&);
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UniformBufferArray& operator=(const UniformBufferArray&);
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protected:
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virtual std::unique_ptr<UniformBuffer> copy(const UniformBuffer&) = 0;
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protected:
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std::array<UniformBufferPtr, shaders::maxUBOCountPerShader> uniformBufferVector;
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static std::shared_ptr<UniformBuffer> nullref;
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};
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} // namespace gfx
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} // namespace mbgl
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