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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef LUA_SHADERS_H
#define LUA_SHADERS_H
#include <string>
#include <vector>
using std::string;
using std::vector;
#include "Rendering/GL/myGL.h"
struct lua_State;
class LuaShaders {
public:
static bool PushEntries(lua_State* L);
LuaShaders();
~LuaShaders();
string errorLog;
GLuint GetProgramName(unsigned int progID) const;
private:
struct Object {
Object(GLuint _id, GLenum _type) : id(_id), type(_type) {}
GLuint id;
GLenum type;
};
struct Program {
GLuint id;
std::vector<Object> objects;
};
std::vector<Program> programs;
vector<unsigned int> unused; // references slots in programs
private:
unsigned int AddProgram(const Program& p);
void RemoveProgram(unsigned int progID);
GLuint GetProgramName(lua_State* L, int index) const;
private:
static void DeleteProgram(Program& p);
private:
// the call-outs
static int CreateShader(lua_State* L);
static int DeleteShader(lua_State* L);
static int UseShader(lua_State* L);
static int ActiveShader(lua_State* L);
static int GetActiveUniforms(lua_State* L);
static int GetUniformLocation(lua_State* L);
static int Uniform(lua_State* L);
static int UniformInt(lua_State* L);
static int UniformArray(lua_State* L);
static int UniformMatrix(lua_State* L);
static int SetShaderParameter(lua_State* );
static int GetShaderLog(lua_State* L);
private:
static int activeShaderDepth;
};
#endif /* LUA_SHADERS_H */
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