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OpenSceneGraph/include/osg/VertexProgram
Robert Osfield b25c08bca4 More spelling & top fixes.
2004-09-15 19:10:15 +00:00

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_VERTEXPROGRAM
#define OSG_VERTEXPROGRAM 1
#include <osg/StateAttribute>
#include <osg/Vec4>
#include <osg/Matrix>
#include <osg/buffered_value>
#include <map>
#include <string>
// if not defined by gl.h use the definition found in:
// http://oss.sgi.com/projects/ogl-sample/registry/ARB/vertex_program.txt
#ifndef GL_ARB_vertex_program
#define GL_VERTEX_PROGRAM_ARB 0x8620
#define GL_VERTEX_PROGRAM_POINT_SIZE_ARB 0x8642
#define GL_VERTEX_PROGRAM_TWO_SIDE_ARB 0x8643
#define GL_COLOR_SUM_ARB 0x8458
#define GL_PROGRAM_FORMAT_ASCII_ARB 0x8875
#define GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB 0x8622
#define GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB 0x8623
#define GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB 0x8624
#define GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB 0x8625
#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB 0x886A
#define GL_CURRENT_VERTEX_ATTRIB_ARB 0x8626
#define GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB 0x8645
#define GL_PROGRAM_LENGTH_ARB 0x8627
#define GL_PROGRAM_FORMAT_ARB 0x8876
#define GL_PROGRAM_BINDING_ARB 0x8677
#define GL_PROGRAM_INSTRUCTIONS_ARB 0x88A0
#define GL_MAX_PROGRAM_INSTRUCTIONS_ARB 0x88A1
#define GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB 0x88A2
#define GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB 0x88A3
#define GL_PROGRAM_TEMPORARIES_ARB 0x88A4
#define GL_MAX_PROGRAM_TEMPORARIES_ARB 0x88A5
#define GL_PROGRAM_NATIVE_TEMPORARIES_ARB 0x88A6
#define GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB 0x88A7
#define GL_PROGRAM_PARAMETERS_ARB 0x88A8
#define GL_MAX_PROGRAM_PARAMETERS_ARB 0x88A9
#define GL_PROGRAM_NATIVE_PARAMETERS_ARB 0x88AA
#define GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB 0x88AB
#define GL_PROGRAM_ATTRIBS_ARB 0x88AC
#define GL_MAX_PROGRAM_ATTRIBS_ARB 0x88AD
#define GL_PROGRAM_NATIVE_ATTRIBS_ARB 0x88AE
#define GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB 0x88AF
#define GL_PROGRAM_ADDRESS_REGISTERS_ARB 0x88B0
#define GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB 0x88B1
#define GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB 0x88B2
#define GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB 0x88B3
#define GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB 0x88B4
#define GL_MAX_PROGRAM_ENV_PARAMETERS_ARB 0x88B5
#define GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB 0x88B6
#define GL_PROGRAM_STRING_ARB 0x8628
#define GL_PROGRAM_ERROR_POSITION_ARB 0x864B
#define GL_CURRENT_MATRIX_ARB 0x8641
#define GL_TRANSPOSE_CURRENT_MATRIX_ARB 0x88B7
#define GL_CURRENT_MATRIX_STACK_DEPTH_ARB 0x8640
#define GL_MAX_VERTEX_ATTRIBS_ARB 0x8869
#define GL_MAX_PROGRAM_MATRICES_ARB 0x862F
#define GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB 0x862E
#define GL_PROGRAM_ERROR_STRING_ARB 0x8874
#define GL_MATRIX0_ARB 0x88C0
#define GL_MATRIX1_ARB 0x88C1
#define GL_MATRIX2_ARB 0x88C2
#define GL_MATRIX3_ARB 0x88C3
#define GL_MATRIX4_ARB 0x88C4
#define GL_MATRIX5_ARB 0x88C5
#define GL_MATRIX6_ARB 0x88C6
#define GL_MATRIX7_ARB 0x88C7
#define GL_MATRIX8_ARB 0x88C8
#define GL_MATRIX9_ARB 0x88C9
#define GL_MATRIX10_ARB 0x88CA
#define GL_MATRIX11_ARB 0x88CB
#define GL_MATRIX12_ARB 0x88CC
#define GL_MATRIX13_ARB 0x88CD
#define GL_MATRIX14_ARB 0x88CE
#define GL_MATRIX15_ARB 0x88CF
#define GL_MATRIX16_ARB 0x88D0
#define GL_MATRIX17_ARB 0x88D1
#define GL_MATRIX18_ARB 0x88D2
#define GL_MATRIX19_ARB 0x88D3
#define GL_MATRIX20_ARB 0x88D4
#define GL_MATRIX21_ARB 0x88D5
#define GL_MATRIX22_ARB 0x88D6
#define GL_MATRIX23_ARB 0x88D7
#define GL_MATRIX24_ARB 0x88D8
#define GL_MATRIX25_ARB 0x88D9
#define GL_MATRIX26_ARB 0x88DA
#define GL_MATRIX27_ARB 0x88DB
#define GL_MATRIX28_ARB 0x88DC
#define GL_MATRIX29_ARB 0x88DD
#define GL_MATRIX30_ARB 0x88DE
#define GL_MATRIX31_ARB 0x88DF
#endif
namespace osg {
/** VertexProgram - encapsulates the OpenGL ARB vertex program state. */
class SG_EXPORT VertexProgram : public StateAttribute
{
public:
VertexProgram();
/** Copy constructor using CopyOp to manage deep vs shallow copy. */
VertexProgram(const VertexProgram& vp,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
META_StateAttribute(osg, VertexProgram, VERTEXPROGRAM);
/** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
virtual int compare(const osg::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(VertexProgram,sa)
// compare each paramter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_vertexProgram)
return 0; // passed all the above comparison macros, must be equal.
}
virtual bool getModeUsage(ModeUsage& usage) const
{
usage.usesMode(GL_VERTEX_PROGRAM_ARB);
return true;
}
// data access methods.
/** Get the handle to the vertex program ID for the current context. */
inline GLuint& getVertexProgramID(unsigned int contextID) const
{
return _vertexProgramIDList[contextID];
}
/** Set the vertex program using C++ style string. */
inline void setVertexProgram( const std::string& program )
{
_vertexProgram = program;
dirtyVertexProgramObject();
}
/** Set the vertex program using a C style string. */
inline void setVertexProgram( const char* program )
{
_vertexProgram = program;
dirtyVertexProgramObject();
}
/** Get the vertex program. */
inline const std::string& getVertexProgram() const { return _vertexProgram; }
/** Set program parameters. */
inline void setProgramLocalParameter(const GLuint index, const Vec4& p)
{
_programLocalParameters[index] = p;
}
/** Set matrix. */
inline void setMatrix(const GLenum mode, const Matrix& matrix)
{
_matrixList[mode] = matrix;
}
/** Force a recompile on next apply() of associated OpenGL vertex program objects. */
void dirtyVertexProgramObject();
/** Use deleteVertexProgramObject instead of glDeletePrograms to allow
* OpenGL Vertex Program objects to cached until they can be deleted
* by the OpenGL context in which they were created, specified
* by contextID.
*/
static void deleteVertexProgramObject(unsigned int contextID,GLuint handle);
/** Flush all the cached vertex programs which need to be deleted
* in the OpenGL context related to contextID.
*/
static void flushDeletedVertexProgramObjects(unsigned int contextID,double currentTime, double& availableTime);
virtual void apply(State& state) const;
virtual void compileGLObjects(State& state) const { apply(state); }
/** Release any OpenGL objects in specified graphics context if State
* object is passed, otherwise release OpenGL objexts for all graphics contexts if
* State object pointer is NULL.
*/
virtual void releaseGLObjects(State* state=0) const;
/** Extensions class which encapsulates the querying of extensions and
* associated function pointers, and provide convenience wrappers to
* check for the extensions or use the associated functions.
*/
class SG_EXPORT Extensions : public osg::Referenced
{
public:
Extensions();
Extensions(const Extensions& rhs);
void lowestCommonDenominator(const Extensions& rhs);
void setupGLExtenions();
void setVertexProgramSupported(bool flag) { _isVertexProgramSupported=flag; }
bool isVertexProgramSupported() const { return _isVertexProgramSupported; }
void glBindProgram(GLenum target, GLuint id) const;
void glGenPrograms(GLsizei n, GLuint *programs) const;
void glDeletePrograms(GLsizei n, GLuint *programs) const;
void glProgramString(GLenum target, GLenum format, GLsizei len, const void *string) const;
void glProgramLocalParameter4fv(GLenum target, GLuint index, const GLfloat *params) const;
protected:
~Extensions() {}
bool _isVertexProgramSupported;
void* _glBindProgram;
void* _glGenPrograms;
void *_glDeletePrograms;
void* _glProgramString;
void* _glProgramLocalParameter4fv;
};
/** Function to call to get the extension of a specified context.
* If the Exentsion object for that context has not yet been created
* and the 'createIfNotInitalized' flag been set to false then returns NULL.
* If 'createIfNotInitalized' is true then the Extensions object is
* automatically created. However, in this case the extension object
* will only be created with the graphics context associated with ContextID.
*/
static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
/** The setExtensions method allows users to override the extensions across graphics contexts.
* Typically used when you have different extensions supported across graphics pipes
* but need to ensure that they all use the same low common denominator extensions.
*/
static void setExtensions(unsigned int contextID,Extensions* extensions);
protected:
virtual ~VertexProgram();
typedef buffered_value<GLuint> VertexProgramIDList;
mutable VertexProgramIDList _vertexProgramIDList;
std::string _vertexProgram;
typedef std::map<GLuint,Vec4> LocalParamList;
LocalParamList _programLocalParameters;
typedef std::map<GLenum,Matrix> MatrixList;
MatrixList _matrixList;
};
}
#endif
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