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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef LUA_FBOS_H
#define LUA_FBOS_H
#include <vector>
#include <string>
#include "Rendering/GL/myGL.h"
struct lua_State;
class LuaFBOs {
public:
LuaFBOs() { fbos.reserve(8); }
~LuaFBOs();
void Clear() { fbos.clear(); }
struct FBO {
void Init(lua_State* L);
void Free(lua_State* L);
GLuint index; // into LuaFBOs::fbos
GLuint id;
GLenum target;
int luaRef;
GLsizei xsize;
GLsizei ysize;
};
const FBO* GetLuaFBO(lua_State* L, int index);
public:
static bool PushEntries(lua_State* L);
private:
std::vector<FBO*> fbos;
private: // helpers
static bool CreateMetatable(lua_State* L);
static bool AttachObject(lua_State* L, int index,
FBO* fbo, GLenum attachID,
GLenum attachTarget = 0,
GLenum attachLevel = 0);
static bool ApplyAttachment(lua_State* L, int index,
FBO* fbo, GLenum attachID);
static bool ApplyDrawBuffers(lua_State* L, int index);
private: // metatable methods
static int meta_gc(lua_State* L);
static int meta_index(lua_State* L);
static int meta_newindex(lua_State* L);
private: // call-outs
static int CreateFBO(lua_State* L);
static int DeleteFBO(lua_State* L);
static int IsValidFBO(lua_State* L);
static int ActiveFBO(lua_State* L);
static int RawBindFBO(lua_State* L); // unsafe
static int BlitFBO(lua_State* L);
};
#endif /* LUA_FBOS_H */
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