/usr/include/cegui-0.8.4/CEGUI/RendererModules/OpenGL/GL3Renderer.h is in libcegui-mk2-dev 0.8.4+dfsg-4ubuntu1.
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created: Wed, 8th Feb 2012
author: Lukas E Meindl (based on code by Paul D Turner)
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2012 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 _CEGUIOpenGL3Renderer_h_
#define _CEGUIOpenGL3Renderer_h_
#include "RendererBase.h"
namespace CEGUI
{
class OpenGL3Shader;
class OpenGL3ShaderManager;
class OpenGL3StateChangeWrapper;
/*!
\brief
Renderer class to interface with OpenGL
*/
class OPENGL_GUIRENDERER_API OpenGL3Renderer : public OpenGLRendererBase
{
public:
/*!
\brief
Convenience function that creates the required objects to initialise the
CEGUI system.
The created Renderer will use the current OpenGL viewport as it's
default surface size.
This will create and initialise the following objects for you:
- CEGUI::OpenGL3Renderer
- CEGUI::DefaultResourceProvider
- CEGUI::System
\param abi
This must be set to CEGUI_VERSION_ABI
\return
Reference to the CEGUI::OpenGL3Renderer object that was created.
*/
static OpenGL3Renderer& bootstrapSystem(const int abi = CEGUI_VERSION_ABI);
/*!
\brief
Convenience function that creates the required objects to initialise the
CEGUI system.
The created Renderer will use the current OpenGL viewport as it's
default surface size.
This will create and initialise the following objects for you:
- CEGUI::OpenGL3Renderer
- CEGUI::DefaultResourceProvider
- CEGUI::System
\param display_size
Size object describing the initial display resolution.
\param abi
This must be set to CEGUI_VERSION_ABI
\return
Reference to the CEGUI::OpenGL3Renderer object that was created.
*/
static OpenGL3Renderer& bootstrapSystem(const Sizef& display_size,
const int abi = CEGUI_VERSION_ABI);
/*!
\brief
Convenience function to cleanup the CEGUI system and related objects
that were created by calling the bootstrapSystem function.
This function will destroy the following objects for you:
- CEGUI::System
- CEGUI::DefaultResourceProvider
- CEGUI::OpenGL3Renderer
\note
If you did not initialise CEGUI by calling the bootstrapSystem function,
you should \e not call this, but rather delete any objects you created
manually.
*/
static void destroySystem();
/*!
\brief
Create an OpenGL3Renderer object.
\param tt_type
Specifies one of the TextureTargetType enumerated values indicating the
desired TextureTarget type to be used.
\param abi
This must be set to CEGUI_VERSION_ABI
*/
static OpenGL3Renderer& create(const int abi = CEGUI_VERSION_ABI);
/*!
\brief
Create an OpenGL3Renderer object.
\param display_size
Size object describing the initial display resolution.
\param tt_type
Specifies one of the TextureTargetType enumerated values indicating the
desired TextureTarget type to be used.
\param abi
This must be set to CEGUI_VERSION_ABI
*/
static OpenGL3Renderer& create(const Sizef& display_size,
const int abi = CEGUI_VERSION_ABI);
/*!
\brief
Destroy an OpenGL3Renderer object.
\param renderer
The OpenGL3Renderer object to be destroyed.
*/
static void destroy(OpenGL3Renderer& renderer);
/*!
\brief
Helper to return the reference to the pointer to the standard shader of
the Renderer
\return
Reference to the pointer to the standard shader of the Renderer
*/
OpenGL3Shader*& getShaderStandard();
/*!
\brief
Helper to return the attribute location of the position variable in the
standard shader
\return
Attribute location of the position variable in the standard shader
*/
GLint getShaderStandardPositionLoc();
/*!
\brief
Helper to return the attribute location of the texture coordinate
variable in the standard shader
\return
Attribute location of the texture coordinate variable in the standard
shader
*/
GLint getShaderStandardTexCoordLoc();
/*!
\brief
Helper to return the attribute location of the colour variable in the
standard shader
\return
Attribute location of the colour variable in the standard shader
*/
GLint getShaderStandardColourLoc();
/*!
\brief
Helper to return the uniform location of the matrix variable in the
standard shader
\return
Uniform location of the matrix variable in the standard shader
*/
GLint getShaderStandardMatrixUniformLoc();
/*!
\brief
Helper to get the wrapper used to check for redundant OpenGL state
changes.
\return
The active OpenGL state change wrapper object.
*/
OpenGL3StateChangeWrapper* getOpenGLStateChanger();
// base class overrides / abstract function implementations
void beginRendering();
void endRendering();
Sizef getAdjustedTextureSize(const Sizef& sz) const;
bool isS3TCSupported() const;
void setupRenderingBlendMode(const BlendMode mode,
const bool force = false);
private:
OpenGLGeometryBufferBase* createGeometryBuffer_impl();
TextureTarget* createTextureTarget_impl();
void initialiseRendererIDString();
/*!
\brief
Constructor for OpenGL Renderer objects
\param tt_type
Specifies one of the TextureTargetType enumerated values indicating the
desired TextureTarget type to be used.
*/
OpenGL3Renderer();
/*!
\brief
Constructor for OpenGL Renderer objects.
\param display_size
Size object describing the initial display resolution.
\param tt_type
Specifies one of the TextureTargetType enumerated values indicating the
desired TextureTarget type to be used.
*/
OpenGL3Renderer(const Sizef& display_size);
void initialiseOpenGLShaders();
void initialiseGLExtensions();
/*!
\brief
Destructor for OpenGL3Renderer objects
*/
virtual ~OpenGL3Renderer();
//! initialise OGL3TextureTargetFactory that will generate TextureTargets
void initialiseTextureTargetFactory();
//! init the extra GL states enabled via enableExtraStateSettings
void setupExtraStates();
//! The OpenGL shader we will use usually
OpenGL3Shader* d_shaderStandard;
//! Position variable location inside the shader, for OpenGL
GLint d_shaderStandardPosLoc;
//! TexCoord variable location inside the shader, for OpenGL
GLint d_shaderStandardTexCoordLoc;
//! Color variable location inside the shader, for OpenGL
GLint d_shaderStandardColourLoc;
//! Matrix uniform location inside the shader, for OpenGL
GLint d_shaderStandardMatrixLoc;
//! The wrapper we use for OpenGL calls, to detect redundant state changes and prevent them
OpenGL3StateChangeWrapper* d_openGLStateChanger;
OpenGL3ShaderManager* d_shaderManager;
//! whether S3TC texture compression is supported by the context
bool d_s3tcSupported;
//! pointer to a helper that creates TextureTargets supported by the system.
OGLTextureTargetFactory* d_textureTargetFactory;
};
}
#endif
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