renderqueue.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef GRAPHICS_RENDER_RENDERQUEUE_H
#define GRAPHICS_RENDER_RENDERQUEUE_H

#include "glm/vec3.hpp"
#include "glm/mat4x4.hpp"

#include "src/graphics/graphics.h"
#include "src/graphics/shader/shaderrenderable.h"

#include <vector>

namespace Graphics {

namespace Render {

class RenderQueue {
public:
    struct RenderQueueNode {
        Shader::ShaderProgram *program;
        Shader::ShaderSurface *surface;
        Shader::ShaderMaterial *material;
        Mesh::Mesh *mesh;
        const glm::mat4 *transform;
        float reference;  
        float alpha;      

        RenderQueueNode() : program(0), surface(0), material(0), mesh(0), transform(0), reference(0.0f), alpha(1.0f) {}
        RenderQueueNode(const RenderQueueNode &src) : program(src.program), surface(src.surface), material(src.material), mesh(src.mesh), transform(src.transform), reference(src.reference), alpha(src.alpha) {}
        RenderQueueNode(Shader::ShaderProgram *prog, Shader::ShaderSurface *sur, Shader::ShaderMaterial *mat, Mesh::Mesh *mes, const glm::mat4 *t, float a = 1.0f, float ref = 0.0f) : program(prog), surface(sur), material(mat), mesh(mes), transform(t), reference(ref), alpha(a) {}

        inline const RenderQueueNode &operator=(const RenderQueueNode &src) { program = src.program; material = src.material; surface = src.surface; mesh = src.mesh; transform = src.transform; reference = src.reference; alpha = src.alpha; return *this; }
    };

    RenderQueue(uint32 precache = 1000);
    ~RenderQueue();

    void setCameraReference(const glm::vec3 &reference);

    void queueItem(Shader::ShaderProgram *program, Shader::ShaderSurface *surface, Shader::ShaderMaterial *material, Mesh::Mesh *mesh, const glm::mat4 *transform, float alpha);
    void queueItem(Shader::ShaderRenderable *renderable, const glm::mat4 *transform, float alpha);

    void sortShader(); 
    void sortDepth();  

    void render();  

    void clear();  

private:

    std::vector<RenderQueueNode>_nodeArray;
    glm::vec3 _cameraReference;
};

} // namespace Render

} // namespace Graphics

#endif // GRAPHICS_RENDER_RENDERQUEUE