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Updates to osgGL2 from Mike Weiblen

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This commit is contained in:
Robert Osfield
2004-01-03 09:06:52 +00:00
parent 458e10c796
commit 249eddb3d8
7 changed files with 167 additions and 115 deletions
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51
include/osgGL2/UniformValue
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@@ -11,7 +11,7 @@
*/
/* file: include/osgGL2/UniformValue
* author: Mike Weiblen 2003-09-18
* author: Mike Weiblen 2003-12-28
*
* See http://www.3dlabs.com/opengl2/ for more information regarding
* the OpenGL Shading Language.
@@ -34,13 +34,13 @@
namespace osgGL2 {
///////////////////////////////////////////////////////////////////////////
/** An abstract class to encapsulate a new value for a glUniform.
/** osgGL2::UniformValue is for internal use by osgGL2::ProgramObject.
* UniformValue is an abstract class to encapsulate a new value for a glUniform.
* osgGL2::ProgramObject.setUniform() constructs and sends a UniformValue
* to all its PCPOs (per-context glProgramObjects) to set the value of a
* glUniform; that value is propogated to the glProgramObjects during the
* next osgGL2::ProgramObject.apply().
* This class is for internal use by osgGL2::ProgramObject.
* to all its PerContextProgramObjects (PCPOs) to set the value of a
* glUniform.
* The value contained in each UniformValue value is propagated to the
* glProgramObjects during the next osgGL2::ProgramObject.apply().
*/
class UniformValue : public osg::Referenced
@@ -51,6 +51,9 @@ class UniformValue : public osg::Referenced
protected:
UniformValue( const char* uniformName ) : _name( uniformName ) {};
virtual ~UniformValue() {};
UniformValue();
UniformValue(const UniformValue&);
UniformValue& operator=(const UniformValue&);
int getLocation( Extensions *ext, const GLhandleARB progObj ) const;
@@ -61,28 +64,30 @@ typedef std::vector< osg::ref_ptr<UniformValue> > UniformValueList;
///////////////////////////////////////////////////////////////////////////
/** UniformValueTemplate creates the concrete classes for each of the
* uniform value types */
#define META_UniformValue( typeName ) \
class UniformValue_##typeName : public UniformValue \
{ \
public: \
UniformValue_##typeName( const char* uniformName, typeName value ); \
virtual void apply( Extensions *ext, const GLhandleARB progObj ) const; \
protected: \
typeName _value; \
}
template<typename T>
class UniformValueTemplate: public UniformValue
{
public:
UniformValueTemplate( const char* uniformName, T value ) :
UniformValue( uniformName ), _value( value ) {}
virtual void apply( Extensions *ext, const GLhandleARB progObj ) const;
META_UniformValue( int );
META_UniformValue( float );
protected:
UniformValueTemplate();
const T _value;
};
using namespace osg;
META_UniformValue( Vec2 );
META_UniformValue( Vec3 );
META_UniformValue( Vec4 );
typedef UniformValueTemplate<int> UniformValue_int;
typedef UniformValueTemplate<float> UniformValue_float;
typedef UniformValueTemplate<osg::Vec2> UniformValue_Vec2;
typedef UniformValueTemplate<osg::Vec3> UniformValue_Vec3;
typedef UniformValueTemplate<osg::Vec4> UniformValue_Vec4;
}
#endif
/*EOF*/