Separated OpenGL specific code into its own "compilation unit"

include/Rendering/RenderQueue.h

@@ -0,0 +1,210 @@
+/*
+	This file is part of Daydream Engine.
+	Copyright 2014 Adam Byléhn, Tobias Dahl, Simon Holmberg, Viktor Ljung
+	
+	Daydream Engine is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	
+	Daydream Engine is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+	
+	You should have received a copy of the GNU Lesser General Public License
+	along with Daydream Engine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef RenderQueue_h__
+#define RenderQueue_h__
+
+#include <cstdint>
+#include <forward_list>
+
+#include "Core/Util/Rectangle.h"
+#include "Rendering/Texture.h"
+#include "Rendering/Model.h"
+
+namespace dd
+{
+
+class RenderQueue;
+
+struct RenderJob
+{
+	friend class RenderQueue;
+
+	float Depth;
+
+protected:
+	uint64_t Hash;
+
+	virtual void CalculateHash() = 0;
+
+	bool operator<(const RenderJob& rhs)
+	{
+		return this->Hash < rhs.Hash;
+	}
+};
+
+struct ModelJob : RenderJob
+{
+	unsigned int ShaderID;
+	unsigned int TextureID;
+
+	glm::mat4 ProjectionMatrix;
+	glm::mat4 ViewMatrix;
+	glm::mat4 ModelMatrix;
+	GLuint DiffuseTexture;
+	GLuint NormalTexture;
+	GLuint SpecularTexture;
+	float Shininess;
+	glm::vec4 Color;
+	GLuint VAO;
+	GLuint ElementBuffer;
+	unsigned int StartIndex;
+	unsigned int EndIndex;
+
+	void CalculateHash() override
+	{
+		Hash = TextureID;
+	}
+};
+
+struct BlendMapModelJob : ModelJob
+{
+	GLuint BlendMapTextureRed;
+	GLuint BlendMapTextureRedNormal;
+	GLuint BlendMapTextureRedSpecular;
+	GLuint BlendMapTextureGreen;
+	GLuint BlendMapTextureGreenNormal;
+	GLuint BlendMapTextureGreenSpecular;
+	GLuint BlendMapTextureBlue;
+	GLuint BlendMapTextureBlueNormal;
+	GLuint BlendMapTextureBlueSpecular;
+	float TextureRepeat;
+};
+
+struct SpriteJob : RenderJob
+{
+	unsigned int ShaderID;
+	unsigned int TextureID;
+
+	glm::mat4 ProjectionMatrix;
+	glm::mat4 ViewMatrix;
+	glm::mat4 ModelMatrix;
+	GLuint DiffuseTexture;
+	GLuint NormalTexture;
+	GLuint SpecularTexture;
+	glm::vec4 Color;
+
+	void CalculateHash() override
+	{
+		Hash = TextureID;
+	}
+};
+
+struct PointLightJob : RenderJob
+{
+	glm::vec3 Position;
+	glm::vec3 SpecularColor = glm::vec3(1, 1, 1);
+	glm::vec3 DiffuseColor = glm::vec3(1, 1, 1);
+	float Radius = 1.f;
+
+	void CalculateHash() override
+	{
+		Hash = 0;
+	}
+};
+
+struct FrameJob : SpriteJob
+{
+	Rectangle Scissor;
+	Rectangle Viewport;
+	std::string Name;
+
+	void CalculateHash() override
+	{
+		Hash = 0;
+	}
+};
+
+struct WaterParticleJob : RenderJob
+{
+	glm::vec3 Position;
+	glm::vec4 Color;
+	glm::mat4 ModelMatrix;
+
+	void CalculateHash() override
+	{
+		Hash = 0;
+	}
+};
+
+class RenderQueue
+{
+public:
+	template <typename T>
+	void Add(T &job)
+	{
+		job.CalculateHash();
+		Jobs.push_back(std::shared_ptr<T>(new T(job)));
+		m_Size++;
+	}
+
+	void Sort()
+	{
+		Jobs.sort();
+	}
+
+	void Clear()
+	{
+		Jobs.clear();
+		m_Size = 0;
+	}
+
+	int Size() const { return m_Size; }
+	std::list<std::shared_ptr<RenderJob>>::const_iterator begin()
+	{
+		return Jobs.begin();
+	}
+
+	std::list<std::shared_ptr<RenderJob>>::const_iterator end()
+	{
+		return Jobs.end();
+	}
+
+	std::list<std::shared_ptr<RenderJob>> Jobs;
+
+private:
+	int m_Size = 0;
+};
+
+struct RenderQueueCollection
+{
+	RenderQueue Deferred;
+	RenderQueue Forward;
+	RenderQueue Lights;
+	RenderQueue GUI;
+
+	void Clear()
+	{
+		Deferred.Clear();
+		Forward.Clear();
+		Lights.Clear();
+		GUI.Clear();
+	}
+
+	void Sort()
+	{
+		Deferred.Sort();
+		Forward.Sort();
+		Lights.Sort();
+		GUI.Sort();
+	}
+};
+
+}
+
+#endif // RenderQueue_h__