mirror of
https://github.com/MobileGL-Dev/MobileGL
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58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
//
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// Created by BZLZHH on 2025/5/1.
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//
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#ifndef MOBILEGL_BUFFERSTATE_H
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#define MOBILEGL_BUFFERSTATE_H
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class BufferState {
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public:
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struct BufferObject {
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GLenum usage = GL_STATIC_DRAW;
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std::vector<GLubyte> data;
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bool dataValid = false;
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bool dirty = false; // TODO: encapsulate this with an public API to RHI
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bool isMapped = false;
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bool generated = false;
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bool isDynamic = false;
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GLenum accessMode = GL_READ_WRITE;
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GLintptr mapOffset = 0;
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GLsizeiptr mapLength = 0;
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GLbitfield mapAccessFlags = 0;
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};
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// Return: the validity of the operation, according to OpenGL 3 standard
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// GLenum GenName(GLuint* buffer);
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GLenum GenNameN(GLsizei n, GLuint* buffers);
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GLenum Create(GLuint buffer);
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GLenum Bind(GLenum target, GLuint buffer);
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GLenum CommitStorage(GLenum target, GLsizeiptr size, const void* data, GLenum usage);
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GLenum CommitStorageRegion(GLenum target, GLintptr offset, GLsizeiptr size, const void* data);
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GLenum AcquireBufferMemoryRange(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access, void** mappedPointer);
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GLenum SyncBufferMemory(GLenum target, GLintptr offset, GLsizeiptr length);
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GLenum CopyBufferRange(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size);
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GLenum AcquireBufferMemory(GLenum target, GLenum access, void** mappedPointer);
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GLenum ReleaseBufferMemory(GLenum target);
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GLenum QueryPropertyIntVector(GLenum target, GLenum pname, GLint* params) const;
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GLenum DeleteN(GLsizei n, const GLuint* buffers);
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bool ValidateAllocatedHandle(GLuint buffer) const;
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bool ValidateGeneratedName(GLuint buffer) const;
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void Delete(GLuint buffer);
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GLuint GetCurrentBinding(GLenum target) const;
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BufferObject* GetBufferObject(GLuint buffer);
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MG_Global::unordered_map<GLenum, GLuint> currentBindings_;
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// MG_Global::unordered_map<GLuint, BufferObject> buffers_;
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private:
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// std::vector<GLuint> freeId_;
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// GLuint lastId_ = 1;
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IndexGenerator<GLuint> indexGenerator_;
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std::vector<std::unique_ptr<BufferObject>> bufferObjects_;
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static bool IsValidTarget_(GLenum target);
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};
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#endif //MOBILEGL_BUFFERSTATE_H
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