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Adding support for controlling visual settings via environmental variables

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and command line paramters.  Including support for stereo and stencil buffer.
This commit is contained in:
Robert Osfield
2001-12-19 00:38:23 +00:00
parent a3fe8ebb18
commit 296865e250
24 changed files with 825 additions and 300 deletions
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57
include/osg/ColorMatrix Normal file
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@@ -0,0 +1,57 @@
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.
#ifndef OSG_COLORMATRIX
#define OSG_COLORMATRIX 1
#include <osg/StateAttribute>
#include <osg/Matrix>
namespace osg {
/** Texture Matrix state class for encapsulating OpenGL texture matrix functionality.*/
class SG_EXPORT ColorMatrix : public StateAttribute
{
public :
ColorMatrix( void );
META_StateAttribute(ColorMatrix, COLORMATRIX);
/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
virtual int compare(const StateAttribute& sa) const
{
// check the types are equal and then create the rhs variable
// used by the COMPARE_StateAttribute_Paramter macro's below.
COMPARE_StateAttribute_Types(ColorMatrix,sa)
// compare each paramter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_matrix)
return 0; // passed all the above comparison macro's, must be equal.
}
/** Set the color matrix */
inline void setMatrix(const Matrix& matrix) { _matrix = matrix; }
/** Get the color matrix */
inline Matrix& getMatrix() { return _matrix; }
/** Get the const color matrix */
inline const Matrix& getMatrix() const { return _matrix; }
/** apply as OpenGL texture matrix.*/
virtual void apply(State& state) const;
protected:
virtual ~ColorMatrix( void );
Matrix _matrix;
};
};
#endif

16
include/osg/State
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@@ -11,6 +11,7 @@
#include <osg/FrameStamp>
#include <osg/Camera>
#include <osg/VisualsSettings>
#include <vector>
#include <map>
@@ -107,11 +108,20 @@ class SG_EXPORT State : public Referenced
/** Get the camera */
inline const Camera* getCamera() const { return _camera.get(); }
/** Set the VisualsSettings. Note, nothing is applied, the visual settings are just used
* used in the State object to pass the current visual settings to Drawables
* during rendering. */
inline void setVisualsSettings(VisualsSettings* vs) { _visualsSettings = vs; }
/** Get the VisualsSettings */
inline const VisualsSettings* getVisualsSettings() const { return _visualsSettings.get(); }
private:
unsigned int _contextID;
ref_ptr<FrameStamp> _frameStamp;
ref_ptr<Camera> _camera;
unsigned int _contextID;
ref_ptr<FrameStamp> _frameStamp;
ref_ptr<Camera> _camera;
ref_ptr<VisualsSettings> _visualsSettings;
typedef std::vector<StateAttribute::GLModeValue> ValueVec;

80
include/osg/StateAttribute
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@@ -98,44 +98,50 @@ class SG_EXPORT StateAttribute : public Object
enum Types
{
TEXTURE =0,
TEXTURE_0 =TEXTURE+0,
TEXTURE_1 =TEXTURE+1,
TEXTURE_2 =TEXTURE+2,
TEXTURE_3 =TEXTURE+3,
MATERIAL =4,
ALPHAFUNC =5,
ANTIALIAS =6,
COLORTABLE =6,
CULLFACE =8,
FOG =9,
FRONTFACE =10,
LIGHT =11,
LIGHT_0 =LIGHT+0,
TEXTURE_0 =TEXTURE,
TEXTURE_1 =TEXTURE_0+1,
TEXTURE_2 =TEXTURE_1+2,
TEXTURE_3 =TEXTURE_2+3,
MATERIAL =TEXTURE_3+1,
ALPHAFUNC =MATERIAL+1,
ANTIALIAS =ALPHAFUNC+1,
COLORTABLE =ANTIALIAS+1,
CULLFACE =COLORTABLE+1,
FOG =CULLFACE+1,
FRONTFACE =FOG+1,
LIGHT =FRONTFACE+1,
LIGHT_0 =LIGHT,
LIGHT_1 =LIGHT+1,
LIGHT_2 =LIGHT+2,
LIGHT_3 =LIGHT+3,
LIGHT_4 =LIGHT+4,
LIGHT_5 =LIGHT+5,
LIGHT_6 =LIGHT+6,
LIGHT_7 =LIGHT+7,
POINT =18,
POLYGONMODE =19,
POLYGONOFFSET =20,
TEXENV =21,
TEXGEN =22,
TEXMAT =23,
TRANSPARENCY =24,
STENCIL =25,
COLORMASK =26,
DEPTH =27,
VIEWPORT =28,
CLIPPLANE =29,
CLIPPLANE_0 =CLIPPLANE+0,
CLIPPLANE_1 =CLIPPLANE+1,
CLIPPLANE_2 =CLIPPLANE+2,
CLIPPLANE_3 =CLIPPLANE+3,
CLIPPLANE_4 =CLIPPLANE+4,
CLIPPLANE_5 =CLIPPLANE+5
LIGHT_2 =LIGHT+1,
LIGHT_3 =LIGHT+1,
LIGHT_4 =LIGHT+1,
LIGHT_5 =LIGHT+1,
LIGHT_6 =LIGHT+1,
LIGHT_7 =LIGHT+1,
POINT =LIGHT_7+1,
POLYGONMODE =POINT+1,
POLYGONOFFSET =POLYGONMODE+1,
TEXENV =POLYGONOFFSET+1,
TEXGEN =TEXENV+1,
TEXMAT =TEXGEN+1,
TRANSPARENCY =TEXMAT+1,
STENCIL =TRANSPARENCY+1,
COLORMASK =STENCIL+1,
DEPTH =COLORMASK+1,
VIEWPORT =DEPTH+1,
CLIPPLANE =VIEWPORT+1,
CLIPPLANE_0 =CLIPPLANE,
CLIPPLANE_1 =CLIPPLANE_0+1,
CLIPPLANE_2 =CLIPPLANE_1+1,
CLIPPLANE_3 =CLIPPLANE_2+1,
CLIPPLANE_4 =CLIPPLANE_3+1,
CLIPPLANE_5 =CLIPPLANE_4+1,
COLORMATRIX =CLIPPLANE_5+1
};
StateAttribute() {}

7
include/osg/Viewport
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@@ -59,8 +59,11 @@ class SG_EXPORT Viewport : public StateAttribute
inline const int width() const { return _width; }
inline const int height() const { return _height; }
/** return the aspcetRatio of the viewport, which is equal to width/height.*/
inline const float aspectRatio() const { return (float)_width/(float)_height; }
inline const bool valid() const { return _width!=0 && _height!=0; }
/** Return the aspcetRatio of the viewport, which is equal to width/height.
* If height is zero, the potental division by zero is avoid by simply returning 1.0f.*/
inline const float aspectRatio() const { if (_height!=0) return (float)_width/(float)_height; else return 1.0f; }
virtual void apply(State& state) const;

115
include/osg/VisualsSettings Normal file
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@@ -0,0 +1,115 @@
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.
#ifndef OSG_VISUALSSETTINGS
#define OSG_VISUALSSETTINGS 1
#include <osg/Referenced>
#include <string>
#include <vector>
namespace osg {
/** VisualsSettings class for encapsulating what visuals are required and
* have been set up, and the status of stereo viewing.*/
class SG_EXPORT VisualsSettings : public osg::Referenced
{
public:
VisualsSettings()
{
setDefaults();
readEnvironmentalVariables();
}
VisualsSettings(std::vector<std::string>& commandLine)
{
setDefaults();
readEnvironmentalVariables();
readCommandLine(commandLine);
}
VisualsSettings(const VisualsSettings& vs);
virtual ~VisualsSettings();
VisualsSettings& operator = (const VisualsSettings& vs);
void merge(const VisualsSettings& vs);
void setDefaults();
void readEnvironmentalVariables();
/** read the command line string list, removing any matched control sequences.*/
void readCommandLine(std::vector<std::string>& commandLine);
void setStereo(const bool on) { _stereo = on; }
const bool getStereo() const { return _stereo; }
enum StereoMode
{
QUAD_BUFFER,
ANAGLYPHIC,
HORIZONTAL_SPLIT,
VERTICAL_SPLIT
};
void setStereoMode(const StereoMode mode) { _stereoMode = mode; }
const StereoMode getStereoMode() const { return _stereoMode; }
void setEyeSeperation(const float eyeSeperation) { _eyeSeperation = eyeSeperation; }
const float getEyeSeperation() const { return _eyeSeperation; }
void setScreenDistance(const float distance) { _screenDistance = distance; }
const float getScreenDistance() const { return _screenDistance; }
void setDoubleBuffer(const bool flag) { _doubleBuffer = flag; }
const bool getDoubleBuffer() const { return _doubleBuffer; }
void setRGB(const bool flag) { _RGB = flag; }
const bool getRGB() const { return _RGB; }
void setDepthBuffer(const bool flag) { _depthBuffer = flag; }
const bool getDepthBuffer() const { return _depthBuffer; }
void setMinimumNumAlphaBits(const unsigned int bits) { _minimumNumberAlphaBits = bits; }
const unsigned int getMinimumNumAlphaBits() const { return _minimumNumberAlphaBits; }
const bool getAlphaBuffer() const { return _minimumNumberAlphaBits!=0; }
void setMinimumNumStencilBits(const unsigned int bits) { _minimumNumberStencilBits = bits; }
const unsigned int getMinimumNumStencilBits() const { return _minimumNumberStencilBits; }
const bool getStencilBuffer() const { return _minimumNumberStencilBits!=0; }
protected:
void copy(const VisualsSettings& vs);
bool _stereo;
StereoMode _stereoMode;
float _eyeSeperation;
float _screenDistance;
bool _doubleBuffer;
bool _RGB;
bool _depthBuffer;
unsigned int _minimumNumberAlphaBits;
unsigned int _minimumNumberStencilBits;
};
}
# endif

6
include/osgDB/ReadFile
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@@ -36,7 +36,11 @@ OSGDB_EXPORT extern osg::Image* readImageFile(const std::string& filename);
* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
* for the filename extension, and this plugin then handles the request
* to read the specified file.*/
OSGDB_EXPORT extern osg::Node* readNodeFile(const std::string& filename);
OSGDB_EXPORT extern osg::Node* readNodeFile(const std::string& filename);
/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
* than one subgraph has been loaded.*/
OSGDB_EXPORT extern osg::Node* readNodeFiles(std::vector<std::string>& commandLine);
};

10
include/osgDB/Registry
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@@ -17,6 +17,7 @@
namespace osgDB {
/**
Registry is a singleton factory which stores
the reader/writers which are linked in
@@ -38,6 +39,9 @@ class OSGDB_EXPORT Registry
static Registry* instance();
/** read the command line string list, removing any matched control sequences.*/
void readCommandLine(std::vector<std::string>& commandLine);
/** register an .fileextension alias to mapExt toExt, the later
* should the the extension name of the readerwriter plugin library.
* For example to map .tif files to the tiff loader, use
@@ -131,6 +135,12 @@ class OSGDB_EXPORT Registry
};
/** read the command line string list into the osgDB::Registry(), removing any matched control sequences.*/
inline void readCommandLine(std::vector<std::string>& commandLine)
{
Registry::instance()->readCommandLine(commandLine);
}
/** Proxy class for automatic registration of DotOsgWrappers with the Registry.*/
class RegisterDotOsgWrapperProxy
{

8
include/osgGLUT/Viewer
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@@ -9,6 +9,7 @@
#include <osg/NodeVisitor>
#include <osg/Geode>
#include <osg/Timer>
#include <osg/VisualsSettings>
#include <osgUtil/GUIEventAdapter>
#include <osgUtil/CameraManipulator>
@@ -91,6 +92,9 @@ class OSGGLUT_EXPORT Viewer : public osgUtil::GUIActionAdapter
virtual void requestContinuousUpdate(bool /*needed*/) {} // continuous update always
virtual void requestWarpPointer(int x,int y);
/** read the command line string list, removing any matched control sequences.*/
void readCommandLine(std::vector<std::string>& commandLine);
protected:
static void displayCB();
@@ -173,8 +177,8 @@ class OSGGLUT_EXPORT Viewer : public osgUtil::GUIActionAdapter
osg::Timer_t frameTick();
osg::ref_ptr<osg::FrameStamp> _frameStamp;
osg::ref_ptr<osg::FrameStamp> _frameStamp;
osg::ref_ptr<osg::VisualsSettings> _visualsSettings;
};

34
include/osgUtil/SceneView
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@@ -10,6 +10,7 @@
#include <osg/Light>
#include <osg/Camera>
#include <osg/FrameStamp>
#include <osg/VisualsSettings>
#include <osgUtil/CullVisitor>
@@ -76,6 +77,11 @@ class OSGUTIL_EXPORT SceneView : public osg::Referenced
_viewport->getViewport(x,y,width,height);
}
/** Set the VisualsSettings. */
inline void setVisualsSettings(osg::VisualsSettings* vs) { _visualsSettings = vs; }
/** Get the VisualsSettings */
inline const osg::VisualsSettings* getVisualsSettings() const { return _visualsSettings.get(); }
/** Set the background color used in glClearColor().
@@ -105,28 +111,11 @@ class OSGUTIL_EXPORT SceneView : public osg::Referenced
osg::State* getState() { return _state.get(); }
const osg::State* getState() const { return _state.get(); }
enum StereoMode
{
MONO,
QUAD_BUFFER_STEREO,
ANAGLYPHIC_STEREO,
HORIZONTAL_SPLIT_STEREO,
VERTICAL_SPLIT_STEREO
};
void setStereoMode(const StereoMode mode) { _stereoMode = mode; }
const StereoMode getStereoMode() const { return _stereoMode; }
void setLeftEyeOffset(const osg::Vec3& pos) { _leftEye = pos; }
void setRightEyeOffset(const osg::Vec3& pos) { _rightEye = pos; }
void setFocalLength(float length) { _focalLength = length; }
void setScreenDistance(float distance) { _screenDistance = distance; }
void setCamera(osg::Camera* camera) { _camera = camera; }
osg::Camera* getCamera() { return _camera.get(); }
const osg::Camera* getCamera() const { return _camera.get(); }
void setInitVisitor(osg::NodeVisitor* av) { _initVisitor = av; }
osg::NodeVisitor* getInitVisitor() { return _initVisitor.get(); }
@@ -229,15 +218,8 @@ class OSGUTIL_EXPORT SceneView : public osg::Referenced
osg::ref_ptr<osg::StateSet> _globalState;
osg::ref_ptr<osg::Light> _light;
osg::ref_ptr<osg::Camera> _camera;
osg::ref_ptr<osg::VisualsSettings> _visualsSettings;
osg::ref_ptr<osg::State> _state;
StereoMode _stereoMode;
osg::Vec3 _leftEye;
osg::Vec3 _rightEye;
float _focalLength;
float _screenDistance;
bool _initCalled;
osg::ref_ptr<osg::NodeVisitor> _initVisitor;

43
include/osgUtil/VisualsRequirementsVisitor
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@@ -7,7 +7,7 @@
#include <osg/NodeVisitor>
#include <osg/Geode>
#include <osg/GeoSet>
#include <osg/VisualsSettings>
#include <osgUtil/Export>
@@ -27,36 +27,13 @@ class OSGUTIL_EXPORT VisualsRequirementsVisitor : public osg::NodeVisitor
* alpha and stencil off.*/
VisualsRequirementsVisitor();
/** Set the VisualsSettings. */
inline void setVisualsSettings(osg::VisualsSettings* vs) { _vs = vs; }
void setRequiresDoubleBuffer(const bool flag) { _requiresDoubleBuffer = flag; }
const bool requiresDoubleBuffer() const { return _requiresDoubleBuffer; }
void setRequiresRGB(const bool flag) { _requiresRBG = flag; }
const bool requiresRGB() const { return _requiresRBG; }
void setRequiresDepthBuffer(const bool flag) { _requiresDepthBuffer = flag; }
const bool requiresDepthBuffer() const { return _requiresDepthBuffer; }
void setMinimumNumAlphaBits(const unsigned int bits) { _minimumNumberAlphaBits = bits; }
const unsigned int getMinimumNumAlphaBits() const { return _minimumNumberAlphaBits; }
const bool requiresAlphaBuffer() const { return _minimumNumberAlphaBits!=0; }
void setMinimumNumStencilBits(const unsigned int bits) { _minimumNumberStencilBits = bits; }
const unsigned int getMinimumNumStencilBits() const { return _minimumNumberStencilBits; }
/** Get the VisualsSettings */
inline const osg::VisualsSettings* getVisualsSettings() const { return _vs.get(); }
const bool requiresStencilBuffer() const { return _minimumNumberStencilBits!=0; }
virtual void applyStateSet(osg::StateSet& stateset);
virtual void apply(osg::Node& node);
@@ -67,12 +44,8 @@ class OSGUTIL_EXPORT VisualsRequirementsVisitor : public osg::NodeVisitor
protected:
bool _requiresDoubleBuffer;
bool _requiresRBG;
bool _requiresDepthBuffer;
unsigned int _minimumNumberAlphaBits;
unsigned int _minimumNumberStencilBits;
osg::ref_ptr<osg::VisualsSettings> _vs;
};
};