121 lines
2.1 KiB
C++
121 lines
2.1 KiB
C++
/*
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** glstate.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GLSTATE_H
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#define GLSTATE_H
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#include "etc.h"
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#include <stack>
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template<typename T>
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struct GLProperty
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{
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void init(const T &value)
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{
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current = value;
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apply(value);
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}
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void push() { stack.push(current); }
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void pop() { set(stack.top()); stack.pop(); }
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T &get() { return current; }
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void set(const T &value)
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{
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if (value == current)
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return;
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init(value);
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}
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void pushSet(const T &value)
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{
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push();
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set(value);
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}
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private:
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virtual void apply(const T &value) = 0;
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T current;
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std::stack<T> stack;
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};
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class GLClearColor : public GLProperty<Vec4>
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{
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void apply(const Vec4 &);
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};
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class GLScissorBox : public GLProperty<IntRect>
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{
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public:
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/* Sets the intersection of the current box with value */
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void setIntersect(const IntRect &value);
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private:
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void apply(const IntRect &value);
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};
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class GLScissorTest : public GLProperty<bool>
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{
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void apply(const bool &value);
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};
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class GLTexture2D : public GLProperty<bool>
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{
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void apply(const bool &value);
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};
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class GLBlendMode : public GLProperty<BlendType>
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{
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void apply(const BlendType &value);
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};
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class GLViewport : public GLProperty<IntRect>
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{
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void apply(const IntRect &value);
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};
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class GLState
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{
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public:
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GLClearColor clearColor;
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GLScissorBox scissorBox;
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GLScissorTest scissorTest;
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GLTexture2D texture2D;
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GLBlendMode blendMode;
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GLViewport viewport;
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struct Caps
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{
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int maxTexSize;
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Caps();
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} caps;
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GLState();
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};
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#endif // GLSTATE_H
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