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/***********************************************************************
created: Wed, 8th Feb 2012
author: Lukas E Meindl (based on code by Paul D Turner)
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2013 Paul D Turner & The CEGUI Development Team
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
***************************************************************************/
#ifndef _CEGUIOpenGL3GeometryBuffer_h_
#define _CEGUIOpenGL3GeometryBuffer_h_
#include "CEGUI/RendererModules/OpenGL/GeometryBufferBase.h"
namespace CEGUI
{
class OpenGL3Shader;
class OpenGL3StateChangeWrapper;
class OpenGL3Renderer;
//! OpenGL3 based implementation of the GeometryBuffer interface.
class OPENGL_GUIRENDERER_API OpenGL3GeometryBuffer : public OpenGLGeometryBufferBase
{
public:
//! Constructor
OpenGL3GeometryBuffer(OpenGL3Renderer& owner);
virtual ~OpenGL3GeometryBuffer();
void initialiseOpenGLBuffers();
//! The functions first binds the vbo and then sets it up for rendering.
void configureVertexArray() const;
void deinitialiseOpenGLBuffers();
void updateOpenGLBuffers();
// implementation/overrides of members from GeometryBuffer
void draw() const;
void appendGeometry(const Vertex* const vbuff, uint vertex_count);
void reset();
protected:
//! OpenGL vao used for the vertices
GLuint d_verticesVAO;
//! OpenGL vbo containing all vertex data
GLuint d_verticesVBO;
//! Reference to the OpenGL shader inside the Renderer, that is used to render all geometry
CEGUI::OpenGL3Shader*& d_shader;
//! Position variable location inside the shader, for OpenGL
const GLint d_shaderPosLoc;
//! TexCoord variable location inside the shader, for OpenGL
const GLint d_shaderTexCoordLoc;
//! Color variable location inside the shader, for OpenGL
const GLint d_shaderColourLoc;
//! Matrix uniform location inside the shader, for OpenGL
const GLint d_shaderStandardMatrixLoc;
//! Pointer to the OpenGL state changer wrapper that was created inside the Renderer
OpenGL3StateChangeWrapper* d_glStateChanger;
//! Size of the buffer that is currently in use
GLuint d_bufferSize;
};
}
#endif
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