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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef LUA_OPENGLUTILS_H
#define LUA_OPENGLUTILS_H
#include <string>
#include "System/type2.h"
class CMatrix44f;
class LuaMatTexture;
struct lua_State;
typedef unsigned int GLuint;
enum LuaMatrixType {
LUAMATRICES_SHADOW,
LUAMATRICES_VIEW,
LUAMATRICES_VIEWINVERSE,
LUAMATRICES_PROJECTION,
LUAMATRICES_PROJECTIONINVERSE,
LUAMATRICES_VIEWPROJECTION,
LUAMATRICES_VIEWPROJECTIONINVERSE,
LUAMATRICES_BILLBOARD,
LUAMATRICES_NONE
};
class LuaMatTexture {
public:
enum Type {
LUATEX_NONE = 0,
LUATEX_NAMED,
LUATEX_LUATEXTURE,
LUATEX_UNITTEXTURE1,
LUATEX_UNITTEXTURE2,
LUATEX_3DOTEXTURE,
LUATEX_UNITBUILDPIC,
LUATEX_UNITRADARICON,
LUATEX_MAP_REFLECTION,
LUATEX_SKY_REFLECTION,
LUATEX_SPECULAR,
LUATEX_SHADOWMAP,
LUATEX_HEIGHTMAP,
// NOTE: must be in same order as MAP_BASE_*!
LUATEX_SMF_GRASS,
LUATEX_SMF_DETAIL,
LUATEX_SMF_MINIMAP,
LUATEX_SMF_SHADING,
LUATEX_SMF_NORMALS,
// NOTE: must be in same order as MAP_SSMF_*!
LUATEX_SSMF_NORMALS,
LUATEX_SSMF_SPECULAR,
LUATEX_SSMF_SDISTRIB,
LUATEX_SSMF_SDETAIL,
LUATEX_SSMF_SNORMALS,
LUATEX_SSMF_SKYREFL,
LUATEX_SSMF_EMISSION,
LUATEX_SSMF_PARALLAX,
LUATEX_INFOTEX_SUFFIX,
LUATEX_INFOTEX_ACTIVE,
LUATEX_MAP_GBUFFER_NORM,
LUATEX_MAP_GBUFFER_DIFF,
LUATEX_MAP_GBUFFER_SPEC,
LUATEX_MAP_GBUFFER_EMIT,
LUATEX_MAP_GBUFFER_MISC,
LUATEX_MAP_GBUFFER_ZVAL,
LUATEX_MODEL_GBUFFER_NORM,
LUATEX_MODEL_GBUFFER_DIFF,
LUATEX_MODEL_GBUFFER_SPEC,
LUATEX_MODEL_GBUFFER_EMIT,
LUATEX_MODEL_GBUFFER_MISC,
LUATEX_MODEL_GBUFFER_ZVAL,
LUATEX_FONT,
LUATEX_FONTSMALL,
};
public:
LuaMatTexture()
: type(LUATEX_NONE), data(nullptr), state(nullptr), enable(false), enableTexParams(false) {}
void Finalize();
void Bind() const;
void Unbind() const;
void Print(const std::string& indent) const;
static int Compare(const LuaMatTexture& a, const LuaMatTexture& b);
bool operator <(const LuaMatTexture& mt) const {
return Compare(*this, mt) < 0;
}
bool operator==(const LuaMatTexture& mt) const {
return Compare(*this, mt) == 0;
}
bool operator!=(const LuaMatTexture& mt) const {
return Compare(*this, mt) != 0;
}
public:
Type type;
const void* data;
void* state;
bool enable;
bool enableTexParams;
int2 GetSize() const;
GLuint GetTextureID() const;
GLuint GetTextureTarget() const;
public:
static const int maxTexUnits = 16;
};
class LuaOpenGLUtils {
public:
static void ResetState();
static const CMatrix44f* GetNamedMatrix(const std::string& name);
static LuaMatTexture::Type GetLuaMatTextureType(const std::string& name);
static LuaMatrixType GetLuaMatrixType(const std::string& name);
static bool ParseTextureImage(lua_State* L, LuaMatTexture& texUnit, const std::string& image);
};
#endif // LUA_OPENGLUTILS_H
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