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Added support for the ARB_vertex_buffer_object into osg::Geometry.

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This commit is contained in:
Robert Osfield
2003-06-29 21:41:57 +00:00
parent 4c78da34b2
commit b5442ac835
11 changed files with 1018 additions and 511 deletions
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209
include/osg/Drawable
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@@ -28,6 +28,55 @@ class Vec4;
class UByte4;
class Geometry;
#ifndef GL_ARB_vertex_buffer_object
// for compatibility with gl.h headers that don't support VBO,
#if defined(_WIN64)
typedef __int64 GLintptrARB;
typedef __int64 GLsizeiptrARB;
#elif defined(__ia64__) || defined(__x86_64__)
typedef long int GLintptrARB;
typedef long int GLsizeiptrARB;
#else
typedef int GLintptrARB;
typedef int GLsizeiptrARB;
#endif
#define GL_ARRAY_BUFFER_ARB 0x8892
#define GL_ELEMENT_ARRAY_BUFFER_ARB 0x8893
#define GL_ARRAY_BUFFER_BINDING_ARB 0x8894
#define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
#define GL_VERTEX_ARRAY_BUFFER_BINDING_ARB 0x8896
#define GL_NORMAL_ARRAY_BUFFER_BINDING_ARB 0x8897
#define GL_COLOR_ARRAY_BUFFER_BINDING_ARB 0x8898
#define GL_INDEX_ARRAY_BUFFER_BINDING_ARB 0x8899
#define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB 0x889A
#define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB 0x889B
#define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB 0x889C
#define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB 0x889D
#define GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB 0x889E
#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB 0x889F
#define GL_STREAM_DRAW_ARB 0x88E0
#define GL_STREAM_READ_ARB 0x88E1
#define GL_STREAM_COPY_ARB 0x88E2
#define GL_STATIC_DRAW_ARB 0x88E4
#define GL_STATIC_READ_ARB 0x88E5
#define GL_STATIC_COPY_ARB 0x88E6
#define GL_DYNAMIC_DRAW_ARB 0x88E8
#define GL_DYNAMIC_READ_ARB 0x88E9
#define GL_DYNAMIC_COPY_ARB 0x88EA
#define GL_READ_ONLY_ARB 0x88B8
#define GL_WRITE_ONLY_ARB 0x88B9
#define GL_READ_WRITE_ARB 0x88BA
#define GL_BUFFER_SIZE_ARB 0x8764
#define GL_BUFFER_USAGE_ARB 0x8765
#define GL_BUFFER_ACCESS_ARB 0x88BB
#define GL_BUFFER_MAPPED_ARB 0x88BC
#define GL_BUFFER_MAP_POINTER_ARB 0x88BD
#endif
// this is define to alter the way display lists are compiled inside the
// the draw method, it has been found that the NVidia drivers fail completely
// to optimize COMPILE_AND_EXECUTE in fact make it go slower than for no display
@@ -160,6 +209,14 @@ class SG_EXPORT Drawable : public Object
/** Return whether OpenGL display lists are being used for rendering.*/
inline bool getUseDisplayList() const { return _useDisplayList; }
/** When set to true, ignore the setUseDisplayList() settings, and hints to the drawImplemention
method to use OpenGL vertex buffer objects for rendering..*/
void setUseVertexBufferObjects(bool flag);
/** Return whether OpenGL vertex buffer objects should be used when supported by OpenGL driver.*/
inline bool getUseVertexBufferObjects() const { return _useVertexBufferObjects; }
/** Force a recompile on next draw() of any OpenGL display list associated with this geoset.*/
void dirtyDisplayList();
@@ -249,6 +306,15 @@ class SG_EXPORT Drawable : public Object
* in the OpenGL context related to contextID.*/
static void flushDeletedDisplayLists(unsigned int contextID);
/** use deleteVertexBufferObject instead of glDeleteList to allow
* OpenGL buffer objects to cached until they can be deleted
* by the OpenGL context in which they were created, specified
* by contextID.*/
static void deleteVertexBufferObject(unsigned int contextID,GLuint globj);
/** flush all the cached vertex buffer objects which need to be deleted
* in the OpenGL context related to contextID.*/
static void flushDeletedVertexBufferObjects(unsigned int contextID);
typedef unsigned int AttributeType;
@@ -369,6 +435,125 @@ class SG_EXPORT Drawable : public Object
* so one cannot modify it.*/
virtual void accept(PrimitiveFunctor&) const {}
/** Extensions class which encapsulates the querring of extensions and
* associated function pointers, and provide convinience 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 setSecondaryColorSupported(bool flag) { _isSecondaryColorSupported=flag; }
bool isSecondaryColorSupported() const { return _isSecondaryColorSupported; }
void setFogCoordSupported(bool flag) { _isFogCoordSupported=flag; }
bool isFogCoordSupported() const { return _isFogCoordSupported; }
void setMultiTexSupported(bool flag) { _isMultiTexSupported=flag; }
bool isMultiTexSupported() const { return _isMultiTexSupported; }
void glSecondaryColor3ubv(const GLubyte* coord) const;
void glSecondaryColor3fv(const GLfloat* coord) const;
void glFogCoordfv(const GLfloat* coord) const;
void glMultiTexCoord1f(GLenum target,GLfloat coord) const;
void glMultiTexCoord2fv(GLenum target,const GLfloat* coord) const;
void glMultiTexCoord3fv(GLenum target,const GLfloat* coord) const;
void glMultiTexCoord4fv(GLenum target,const GLfloat* coord) const;
void glVertexAttrib1s(unsigned int index, GLshort s) const;
void glVertexAttrib1f(unsigned int index, GLfloat f) const;
void glVertexAttrib2fv(unsigned int index, const GLfloat * v) const;
void glVertexAttrib3fv(unsigned int index, const GLfloat * v) const;
void glVertexAttrib4fv(unsigned int index, const GLfloat * v) const;
void glVertexAttrib4ubv(unsigned int index, const GLubyte * v) const;
void glVertexAttrib4Nubv(unsigned int index, const GLubyte * v) const;
void glGenBuffers (GLsizei n, GLuint *buffers) const;
void glBindBuffer (GLenum target, GLuint buffer) const;
void glBufferData (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage) const;
void glBufferSubData (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data) const;
void glDeleteBuffers (GLsizei n, const GLuint *buffers) const;
protected:
typedef void (APIENTRY * FogCoordProc) (const GLfloat* coord);
typedef void (APIENTRY * VertexAttrib1sProc) (unsigned int index, GLshort s);
typedef void (APIENTRY * VertexAttrib1fProc) (unsigned int index, GLfloat f);
typedef void (APIENTRY * VertexAttribfvProc) (unsigned int index, const GLfloat * v);
typedef void (APIENTRY * VertexAttribubvProc) (unsigned int index, const GLubyte * v);
typedef void (APIENTRY * SecondaryColor3ubvProc) (const GLubyte* coord);
typedef void (APIENTRY * SecondaryColor3fvProc) (const GLfloat* coord);
typedef void (APIENTRY * MultiTexCoord1fProc) (GLenum target,GLfloat coord);
typedef void (APIENTRY * MultiTexCoordfvProc) (GLenum target,const GLfloat* coord);
typedef void (APIENTRY * GenBuffersProc) (GLsizei n, GLuint *buffers);
typedef void (APIENTRY * BindBufferProc) (GLenum target, GLuint buffer);
typedef void (APIENTRY * BufferDataProc) (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
typedef void (APIENTRY * BufferSubDataProc) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data);
typedef void (APIENTRY * DeleteBuffersProc) (GLsizei n, const GLuint *buffers);
~Extensions() {}
bool _isVertexProgramSupported;
bool _isSecondaryColorSupported;
bool _isFogCoordSupported;
bool _isMultiTexSupported;
FogCoordProc _glFogCoordfv;
SecondaryColor3ubvProc _glSecondaryColor3ubv;
SecondaryColor3fvProc _glSecondaryColor3fv;
VertexAttrib1sProc _glVertexAttrib1s;
VertexAttrib1fProc _glVertexAttrib1f;
VertexAttribfvProc _glVertexAttrib2fv;
VertexAttribfvProc _glVertexAttrib3fv;
VertexAttribfvProc _glVertexAttrib4fv;
VertexAttribubvProc _glVertexAttrib4ubv;
VertexAttribubvProc _glVertexAttrib4Nubv;
MultiTexCoord1fProc _glMultiTexCoord1f;
MultiTexCoordfvProc _glMultiTexCoord2fv;
MultiTexCoordfvProc _glMultiTexCoord3fv;
MultiTexCoordfvProc _glMultiTexCoord4fv;
GenBuffersProc _glGenBuffers;
BindBufferProc _glBindBuffer;
BufferDataProc _glBufferData;
BufferSubDataProc _glBufferSubData;
DeleteBuffersProc _glDeleteBuffers;
};
/** Function to call to get the extension of a specified context.
* If the Exentsion object for that context has not yet been created then
* 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
* only be created with the graphics context associated with ContextID..*/
static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
/** setExtensions 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:
Drawable& operator = (const Drawable&) { return *this;}
@@ -398,9 +583,12 @@ class SG_EXPORT Drawable : public Object
bool _supportsDisplayList;
bool _useDisplayList;
bool _supportsVertexBufferObjects;
bool _useVertexBufferObjects;
typedef osg::buffered_value<GLuint> GLObjectList;
mutable GLObjectList _globjList;
mutable GLObjectList _globjList;
mutable GLObjectList _vboList;
ref_ptr<UpdateCallback> _updateCallback;
ref_ptr<DrawCallback> _drawCallback;
@@ -411,9 +599,8 @@ class SG_EXPORT Drawable : public Object
inline void Drawable::draw(State& state) const
{
if (_useDisplayList)
if (_useDisplayList && !(_supportsVertexBufferObjects && _useVertexBufferObjects && state.isVertexBufferObjectSupported()))
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
unsigned int contextID = state.getContextID();
@@ -448,16 +635,16 @@ inline void Drawable::draw(State& state) const
glEndList();
#endif
}
return;
}
else
{
// draw object as nature intended..
if (_drawCallback.valid())
_drawCallback->drawImplementation(state,this);
else
drawImplementation(state);
}
// draw object as nature intended..
if (_drawCallback.valid())
_drawCallback->drawImplementation(state,this);
else
drawImplementation(state);
};