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#pragma once
#include "GLHashMap.h"
#include <Containers/StringView.h>
using namespace Death::Containers;
namespace nCine
{
/// Handles OpenGL buffer objects of different kinds
class GLBufferObject
{
friend class RenderVaoPool;
public:
explicit GLBufferObject(GLenum target);
~GLBufferObject();
inline GLuint GetGLHandle() const {
return glHandle_;
}
inline GLenum GetTarget() const {
return target_;
}
inline GLsizeiptr GetSize() const {
return size_;
}
bool Bind() const;
bool Unbind() const;
void BufferData(GLsizeiptr size, const GLvoid* data, GLenum usage);
void BufferSubData(GLintptr offset, GLsizeiptr size, const GLvoid* data);
#if !defined(WITH_OPENGLES) && !(defined(DEATH_TARGET_APPLE) && defined(DEATH_TARGET_ARM))
void BufferStorage(GLsizeiptr size, const GLvoid* data, GLbitfield flags);
#endif
void BindBufferBase(GLuint index);
void BindBufferRange(GLuint index, GLintptr offset, GLsizei ptrsize);
void* MapBufferRange(GLintptr offset, GLsizeiptr length, GLbitfield access);
void FlushMappedBufferRange(GLintptr offset, GLsizeiptr length);
GLboolean Unmap();
#if !defined(WITH_OPENGLES) || (defined(WITH_OPENGLES) && GL_ES_VERSION_3_2)
void TexBuffer(GLenum internalformat);
#endif
void SetObjectLabel(StringView label);
private:
static class GLHashMap<GLBufferObjectMappingFunc::Size, GLBufferObjectMappingFunc> boundBuffers_;
#ifndef DOXYGEN_GENERATING_OUTPUT
// Doxygen 1.12.0 outputs also private structs/unions even if it shouldn't
struct BufferRange
{
BufferRange()
: glHandle(0), offset(0), ptrsize(0) {}
GLuint glHandle;
GLintptr offset;
GLsizei ptrsize;
};
#endif
GLuint glHandle_;
GLenum target_;
GLsizeiptr size_;
bool mapped_;
static const std::int32_t MaxIndexBufferRange = 128;
/// Current bound index for buffer base. Negative if not bound.
static GLuint boundIndexBase_[MaxIndexBufferRange];
/// Current range and offset for buffer range index
static BufferRange boundBufferRange_[MaxIndexBufferRange];
/// Deleted copy constructor
GLBufferObject(const GLBufferObject&) = delete;
/// Deleted assignment operator
GLBufferObject& operator=(const GLBufferObject&) = delete;
static bool BindHandle(GLenum target, GLuint glHandle);
static GLuint GetBoundHandle(GLenum target);
inline static void SetBoundHandle(GLenum target, GLuint glHandle) {
boundBuffers_[target] = glHandle;
}
};
}
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