448 lines
17 KiB
Plaintext
448 lines
17 KiB
Plaintext
|
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield
|
||
|
|
* Copyright (C) 2003-2005 3Dlabs Inc. Ltd.
|
||
|
|
*
|
||
|
|
* This application is open source and may be redistributed and/or modified
|
||
|
|
* freely and without restriction, both in commericial and non commericial
|
||
|
|
* applications, as long as this copyright notice is maintained.
|
||
|
|
*
|
||
|
|
* This application 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* file: include/osg/Program
|
||
|
|
* author: Mike Weiblen 2005-02-20
|
||
|
|
*/
|
||
|
|
|
||
|
|
// NOTICE: This code is CLOSED during construction and/or renovation!
|
||
|
|
// It is in active development, so DO NOT yet use in application code.
|
||
|
|
// This notice will be removed when the code is open for business.
|
||
|
|
// For development plan and status see:
|
||
|
|
// http://www.openscenegraph.org/index.php?page=Community.DevelopmentWork
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef OSG_PROGRAM
|
||
|
|
#define OSG_PROGRAM 1
|
||
|
|
|
||
|
|
#include <osg/State>
|
||
|
|
#include <osg/StateAttribute>
|
||
|
|
#include <osg/buffered_value>
|
||
|
|
#include <osg/ref_ptr>
|
||
|
|
#include <osg/Vec2>
|
||
|
|
#include <osg/Vec3>
|
||
|
|
#include <osg/Vec4>
|
||
|
|
#include <osg/Referenced>
|
||
|
|
#include <osg/GL>
|
||
|
|
#include <osg/Uniform>
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
|
||
|
|
namespace osg {
|
||
|
|
|
||
|
|
class SG_EXPORT GL2Extensions : public osg::Referenced
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
GL2Extensions();
|
||
|
|
GL2Extensions(const GL2Extensions& rhs);
|
||
|
|
|
||
|
|
void lowestCommonDenominator(const GL2Extensions& rhs);
|
||
|
|
|
||
|
|
void setupGL2Extensions();
|
||
|
|
|
||
|
|
/** Does the GL driver support OpenGL Shading Language? */
|
||
|
|
bool isGlslSupported() const;
|
||
|
|
|
||
|
|
float getGlVersion() const { return _glVersion; }
|
||
|
|
float getLanguageVersion() const { return _glslLanguageVersion; }
|
||
|
|
|
||
|
|
void setShaderObjectsSupported(bool flag) { _isShaderObjectsSupported = flag; }
|
||
|
|
bool isShaderObjectsSupported() const { return _isShaderObjectsSupported; }
|
||
|
|
|
||
|
|
void setVertexShaderSupported(bool flag) { _isVertexShaderSupported = flag; }
|
||
|
|
bool isVertexShaderSupported() const { return _isVertexShaderSupported; }
|
||
|
|
|
||
|
|
void setFragmentShaderSupported(bool flag) { _isFragmentShaderSupported = flag; }
|
||
|
|
bool isFragmentShaderSupported() const { return _isFragmentShaderSupported; }
|
||
|
|
|
||
|
|
void setLanguage100Supported(bool flag) { _isLanguage100Supported = flag; }
|
||
|
|
bool isLanguage100Supported() const { return _isLanguage100Supported; }
|
||
|
|
|
||
|
|
/** 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 GL2Extensions* Get(unsigned int contextID,bool createIfNotInitalized);
|
||
|
|
|
||
|
|
/** 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 Set(unsigned int contextID, GL2Extensions* extensions);
|
||
|
|
|
||
|
|
|
||
|
|
void glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha) const;
|
||
|
|
void glDrawBuffers(GLsizei n, const GLenum *bufs) const;
|
||
|
|
void glStencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) const;
|
||
|
|
void glStencilFuncSeparate(GLenum frontfunc, GLenum backfunc, GLint ref, GLuint mask) const;
|
||
|
|
void glStencilMaskSeparate(GLenum face, GLuint mask) const;
|
||
|
|
void glAttachShader(GLuint program, GLuint shader) const;
|
||
|
|
void glBindAttribLocation(GLuint program, GLuint index, const GLchar *name) const;
|
||
|
|
void glCompileShader(GLuint shader) const;
|
||
|
|
GLuint glCreateProgram(void) const;
|
||
|
|
GLuint glCreateShader(GLenum type) const;
|
||
|
|
void glDeleteProgram(GLuint program) const;
|
||
|
|
void glDeleteShader(GLuint shader) const;
|
||
|
|
void glDetachShader(GLuint program, GLuint shader) const;
|
||
|
|
void glDisableVertexAttribArray(GLuint index) const;
|
||
|
|
void glEnableVertexAttribArray(GLuint index) const;
|
||
|
|
void glGetActiveAttrib(GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name) const;
|
||
|
|
void glGetActiveUniform(GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name) const;
|
||
|
|
void glGetAttachedShaders(GLuint program, GLsizei maxCount, GLsizei *count, GLuint *obj) const;
|
||
|
|
GLint glGetAttribLocation(GLuint program, const GLchar *name) const;
|
||
|
|
void glGetProgramiv(GLuint program, GLenum pname, GLint *params) const;
|
||
|
|
void glGetProgramInfoLog(GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog) const;
|
||
|
|
void glGetShaderiv(GLuint shader, GLenum pname, GLint *params) const;
|
||
|
|
void glGetShaderInfoLog(GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog) const;
|
||
|
|
void glGetShaderSource(GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *source) const;
|
||
|
|
GLint glGetUniformLocation(GLuint program, const GLchar *name) const;
|
||
|
|
void glGetUniformfv(GLuint program, GLint location, GLfloat *params) const;
|
||
|
|
void glGetUniformiv(GLuint program, GLint location, GLint *params) const;
|
||
|
|
void glGetVertexAttribdv(GLuint index, GLenum pname, GLdouble *params) const;
|
||
|
|
void glGetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params) const;
|
||
|
|
void glGetVertexAttribiv(GLuint index, GLenum pname, GLint *params) const;
|
||
|
|
void glGetVertexAttribPointerv(GLuint index, GLenum pname, GLvoid* *pointer) const;
|
||
|
|
GLboolean glIsProgram(GLuint program) const;
|
||
|
|
GLboolean glIsShader(GLuint shader) const;
|
||
|
|
void glLinkProgram(GLuint program) const;
|
||
|
|
void glShaderSource(GLuint shader, GLsizei count, const GLchar* *string, const GLint *length) const;
|
||
|
|
void glUseProgram(GLuint program) const;
|
||
|
|
void glUniform1f(GLint location, GLfloat v0) const;
|
||
|
|
void glUniform2f(GLint location, GLfloat v0, GLfloat v1) const;
|
||
|
|
void glUniform3f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2) const;
|
||
|
|
void glUniform4f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3) const;
|
||
|
|
void glUniform1i(GLint location, GLint v0) const;
|
||
|
|
void glUniform2i(GLint location, GLint v0, GLint v1) const;
|
||
|
|
void glUniform3i(GLint location, GLint v0, GLint v1, GLint v2) const;
|
||
|
|
void glUniform4i(GLint location, GLint v0, GLint v1, GLint v2, GLint v3) const;
|
||
|
|
void glUniform1fv(GLint location, GLsizei count, const GLfloat *value) const;
|
||
|
|
void glUniform2fv(GLint location, GLsizei count, const GLfloat *value) const;
|
||
|
|
void glUniform3fv(GLint location, GLsizei count, const GLfloat *value) const;
|
||
|
|
void glUniform4fv(GLint location, GLsizei count, const GLfloat *value) const;
|
||
|
|
void glUniform1iv(GLint location, GLsizei count, const GLint *value) const;
|
||
|
|
void glUniform2iv(GLint location, GLsizei count, const GLint *value) const;
|
||
|
|
void glUniform3iv(GLint location, GLsizei count, const GLint *value) const;
|
||
|
|
void glUniform4iv(GLint location, GLsizei count, const GLint *value) const;
|
||
|
|
void glUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value) const;
|
||
|
|
void glUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value) const;
|
||
|
|
void glUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value) const;
|
||
|
|
void glValidateProgram(GLuint program) const;
|
||
|
|
void glVertexAttrib1d(GLuint index, GLdouble x) const;
|
||
|
|
void glVertexAttrib1dv(GLuint index, const GLdouble *v) const;
|
||
|
|
void glVertexAttrib1f(GLuint index, GLfloat x) const;
|
||
|
|
void glVertexAttrib1fv(GLuint index, const GLfloat *v) const;
|
||
|
|
void glVertexAttrib1s(GLuint index, GLshort x) const;
|
||
|
|
void glVertexAttrib1sv(GLuint index, const GLshort *v) const;
|
||
|
|
void glVertexAttrib2d(GLuint index, GLdouble x, GLdouble y) const;
|
||
|
|
void glVertexAttrib2dv(GLuint index, const GLdouble *v) const;
|
||
|
|
void glVertexAttrib2f(GLuint index, GLfloat x, GLfloat y) const;
|
||
|
|
void glVertexAttrib2fv(GLuint index, const GLfloat *v) const;
|
||
|
|
void glVertexAttrib2s(GLuint index, GLshort x, GLshort y) const;
|
||
|
|
void glVertexAttrib2sv(GLuint index, const GLshort *v) const;
|
||
|
|
void glVertexAttrib3d(GLuint index, GLdouble x, GLdouble y, GLdouble z) const;
|
||
|
|
void glVertexAttrib3dv(GLuint index, const GLdouble *v) const;
|
||
|
|
void glVertexAttrib3f(GLuint index, GLfloat x, GLfloat y, GLfloat z) const;
|
||
|
|
void glVertexAttrib3fv(GLuint index, const GLfloat *v) const;
|
||
|
|
void glVertexAttrib3s(GLuint index, GLshort x, GLshort y, GLshort z) const;
|
||
|
|
void glVertexAttrib3sv(GLuint index, const GLshort *v) const;
|
||
|
|
void glVertexAttrib4Nbv(GLuint index, const GLbyte *v) const;
|
||
|
|
void glVertexAttrib4Niv(GLuint index, const GLint *v) const;
|
||
|
|
void glVertexAttrib4Nsv(GLuint index, const GLshort *v) const;
|
||
|
|
void glVertexAttrib4Nub(GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w) const;
|
||
|
|
void glVertexAttrib4Nubv(GLuint index, const GLubyte *v) const;
|
||
|
|
void glVertexAttrib4Nuiv(GLuint index, const GLuint *v) const;
|
||
|
|
void glVertexAttrib4Nusv(GLuint index, const GLushort *v) const;
|
||
|
|
void glVertexAttrib4bv(GLuint index, const GLbyte *v) const;
|
||
|
|
void glVertexAttrib4d(GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w) const;
|
||
|
|
void glVertexAttrib4dv(GLuint index, const GLdouble *v) const;
|
||
|
|
void glVertexAttrib4f(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w) const;
|
||
|
|
void glVertexAttrib4fv(GLuint index, const GLfloat *v) const;
|
||
|
|
void glVertexAttrib4iv(GLuint index, const GLint *v) const;
|
||
|
|
void glVertexAttrib4s(GLuint index, GLshort x, GLshort y, GLshort z, GLshort w) const;
|
||
|
|
void glVertexAttrib4sv(GLuint index, const GLshort *v) const;
|
||
|
|
void glVertexAttrib4ubv(GLuint index, const GLubyte *v) const;
|
||
|
|
void glVertexAttrib4uiv(GLuint index, const GLuint *v) const;
|
||
|
|
void glVertexAttrib4usv(GLuint index, const GLushort *v) const;
|
||
|
|
void glVertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer) const;
|
||
|
|
|
||
|
|
// C++-friendly convenience wrapper methods
|
||
|
|
GLuint getCurrentProgram() const;
|
||
|
|
bool getProgramInfoLog( GLuint program, std::string& result ) const;
|
||
|
|
bool getShaderInfoLog( GLuint shader, std::string& result ) const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
~GL2Extensions() {}
|
||
|
|
|
||
|
|
float _glVersion;
|
||
|
|
float _glslLanguageVersion;
|
||
|
|
|
||
|
|
bool _isShaderObjectsSupported;
|
||
|
|
bool _isVertexShaderSupported;
|
||
|
|
bool _isFragmentShaderSupported;
|
||
|
|
bool _isLanguage100Supported;
|
||
|
|
|
||
|
|
void* _glBlendEquationSeparate;
|
||
|
|
void* _glDrawBuffers;
|
||
|
|
void* _glStencilOpSeparate;
|
||
|
|
void* _glStencilFuncSeparate;
|
||
|
|
void* _glStencilMaskSeparate;
|
||
|
|
void* _glAttachShader;
|
||
|
|
void* _glBindAttribLocation;
|
||
|
|
void* _glCompileShader;
|
||
|
|
void* _glCreateProgram;
|
||
|
|
void* _glCreateShader;
|
||
|
|
void* _glDeleteProgram;
|
||
|
|
void* _glDeleteShader;
|
||
|
|
void* _glDetachShader;
|
||
|
|
void* _glDisableVertexAttribArray;
|
||
|
|
void* _glEnableVertexAttribArray;
|
||
|
|
void* _glGetActiveAttrib;
|
||
|
|
void* _glGetActiveUniform;
|
||
|
|
void* _glGetAttachedShaders;
|
||
|
|
void* _glGetAttribLocation;
|
||
|
|
void* _glGetProgramiv;
|
||
|
|
void* _glGetProgramInfoLog;
|
||
|
|
void* _glGetShaderiv;
|
||
|
|
void* _glGetShaderInfoLog;
|
||
|
|
void* _glGetShaderSource;
|
||
|
|
void* _glGetUniformLocation;
|
||
|
|
void* _glGetUniformfv;
|
||
|
|
void* _glGetUniformiv;
|
||
|
|
void* _glGetVertexAttribdv;
|
||
|
|
void* _glGetVertexAttribfv;
|
||
|
|
void* _glGetVertexAttribiv;
|
||
|
|
void* _glGetVertexAttribPointerv;
|
||
|
|
void* _glIsProgram;
|
||
|
|
void* _glIsShader;
|
||
|
|
void* _glLinkProgram;
|
||
|
|
void* _glShaderSource;
|
||
|
|
void* _glUseProgram;
|
||
|
|
void* _glUniform1f;
|
||
|
|
void* _glUniform2f;
|
||
|
|
void* _glUniform3f;
|
||
|
|
void* _glUniform4f;
|
||
|
|
void* _glUniform1i;
|
||
|
|
void* _glUniform2i;
|
||
|
|
void* _glUniform3i;
|
||
|
|
void* _glUniform4i;
|
||
|
|
void* _glUniform1fv;
|
||
|
|
void* _glUniform2fv;
|
||
|
|
void* _glUniform3fv;
|
||
|
|
void* _glUniform4fv;
|
||
|
|
void* _glUniform1iv;
|
||
|
|
void* _glUniform2iv;
|
||
|
|
void* _glUniform3iv;
|
||
|
|
void* _glUniform4iv;
|
||
|
|
void* _glUniformMatrix2fv;
|
||
|
|
void* _glUniformMatrix3fv;
|
||
|
|
void* _glUniformMatrix4fv;
|
||
|
|
void* _glValidateProgram;
|
||
|
|
void* _glVertexAttrib1d;
|
||
|
|
void* _glVertexAttrib1dv;
|
||
|
|
void* _glVertexAttrib1f;
|
||
|
|
void* _glVertexAttrib1fv;
|
||
|
|
void* _glVertexAttrib1s;
|
||
|
|
void* _glVertexAttrib1sv;
|
||
|
|
void* _glVertexAttrib2d;
|
||
|
|
void* _glVertexAttrib2dv;
|
||
|
|
void* _glVertexAttrib2f;
|
||
|
|
void* _glVertexAttrib2fv;
|
||
|
|
void* _glVertexAttrib2s;
|
||
|
|
void* _glVertexAttrib2sv;
|
||
|
|
void* _glVertexAttrib3d;
|
||
|
|
void* _glVertexAttrib3dv;
|
||
|
|
void* _glVertexAttrib3f;
|
||
|
|
void* _glVertexAttrib3fv;
|
||
|
|
void* _glVertexAttrib3s;
|
||
|
|
void* _glVertexAttrib3sv;
|
||
|
|
void* _glVertexAttrib4Nbv;
|
||
|
|
void* _glVertexAttrib4Niv;
|
||
|
|
void* _glVertexAttrib4Nsv;
|
||
|
|
void* _glVertexAttrib4Nub;
|
||
|
|
void* _glVertexAttrib4Nubv;
|
||
|
|
void* _glVertexAttrib4Nuiv;
|
||
|
|
void* _glVertexAttrib4Nusv;
|
||
|
|
void* _glVertexAttrib4bv;
|
||
|
|
void* _glVertexAttrib4d;
|
||
|
|
void* _glVertexAttrib4dv;
|
||
|
|
void* _glVertexAttrib4f;
|
||
|
|
void* _glVertexAttrib4fv;
|
||
|
|
void* _glVertexAttrib4iv;
|
||
|
|
void* _glVertexAttrib4s;
|
||
|
|
void* _glVertexAttrib4sv;
|
||
|
|
void* _glVertexAttrib4ubv;
|
||
|
|
void* _glVertexAttrib4uiv;
|
||
|
|
void* _glVertexAttrib4usv;
|
||
|
|
void* _glVertexAttribPointer;
|
||
|
|
|
||
|
|
void* _glGetInfoLogARB;
|
||
|
|
void* _glGetObjectParameterivARB;
|
||
|
|
void* _glDeleteObjectARB;
|
||
|
|
void* _glGetHandleARB;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Program;
|
||
|
|
typedef osg::ref_ptr<Program> ProgramPtr;
|
||
|
|
|
||
|
|
class Shader;
|
||
|
|
typedef osg::ref_ptr<Shader> ShaderPtr;
|
||
|
|
typedef std::vector< ShaderPtr > ShaderList;
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////
|
||
|
|
/** osg::Program is an application-level abstraction of an OpenGL glProgram.
|
||
|
|
* It is an osg::StateAttribute that, when applied, will activate a
|
||
|
|
* glProgram for subsequent rendering.
|
||
|
|
* osg::Shaders containing the actual shader source code are
|
||
|
|
* attached to a Program, which will then manage the compilation,
|
||
|
|
* linking, and activation of the GLSL program.
|
||
|
|
* Program will automatically manage per-context instancing of the
|
||
|
|
* OpenGL objects, if that is necessary for a particular display
|
||
|
|
* configuration.
|
||
|
|
*/
|
||
|
|
|
||
|
|
class SG_EXPORT Program : public osg::StateAttribute
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
Program();
|
||
|
|
|
||
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
||
|
|
Program(const Program& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
|
||
|
|
|
||
|
|
META_StateAttribute(osg, Program, PROGRAM);
|
||
|
|
|
||
|
|
/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
|
||
|
|
virtual int compare(const osg::StateAttribute& sa) const;
|
||
|
|
|
||
|
|
/** If enabled, activate our program in the GL pipeline,
|
||
|
|
* performing any rebuild operations that might be pending. */
|
||
|
|
virtual void apply(osg::State& state) const;
|
||
|
|
|
||
|
|
virtual void compileGLObjects(osg::State& state) const;
|
||
|
|
|
||
|
|
/** release OpenGL objects in specified graphics context if State
|
||
|
|
object is passed, otherwise release OpenGL objects for all graphics context if
|
||
|
|
State object pointer NULL.*/
|
||
|
|
virtual void releaseGLObjects(osg::State* state=0) const;
|
||
|
|
|
||
|
|
// data access methods.
|
||
|
|
|
||
|
|
/** Mark us as "dirty" and in need of relinking. */
|
||
|
|
void dirtyProgram();
|
||
|
|
|
||
|
|
/** Mark our attached Shaders as "dirty" and in need of recompilation. */
|
||
|
|
void dirtyShaders();
|
||
|
|
|
||
|
|
/** Attach a Shader to this Program */
|
||
|
|
void addShader( Shader* shader );
|
||
|
|
|
||
|
|
/** Mark internal GL glProgram for deletion.
|
||
|
|
* Deletion requests are queued until they can be executed
|
||
|
|
* in the proper GL context. */
|
||
|
|
static void deleteProgram(unsigned int contextID, GLuint program);
|
||
|
|
|
||
|
|
/** flush all the cached glPrograms which need to be deleted
|
||
|
|
* in the OpenGL context related to contextID.*/
|
||
|
|
static void flushDeletedGlslObjects(unsigned int contextID,double currentTime, double& availableTime);
|
||
|
|
|
||
|
|
/** An annotation/comment for use by the application */
|
||
|
|
void setComment( const std::string& comment ) { _comment = comment; }
|
||
|
|
void setComment( const char* comment ) { _comment = comment; }
|
||
|
|
const std::string& getComment() const { return _comment; }
|
||
|
|
|
||
|
|
/** should Uniform values be tested to avoid redundant setting? */
|
||
|
|
void setAvoidRedundantUniformSetting( bool flag ) { _avoidRedundantUniformSetting = flag; }
|
||
|
|
bool getAvoidRedundantUniformSetting() const { return _avoidRedundantUniformSetting; }
|
||
|
|
|
||
|
|
// TODO glBindAttribLocation
|
||
|
|
|
||
|
|
|
||
|
|
protected:
|
||
|
|
/** An OSG-internal encapsulation of glProgram's active uniforms */
|
||
|
|
class ActiveUniform : public osg::Referenced
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
ActiveUniform( const GLchar* name, GLenum type );
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual ~ActiveUniform() {}
|
||
|
|
|
||
|
|
Uniform::Value _value;
|
||
|
|
GLint _location;
|
||
|
|
|
||
|
|
private:
|
||
|
|
ActiveUniform(); // disallowed
|
||
|
|
};
|
||
|
|
typedef osg::ref_ptr< ActiveUniform > ActiveUniformPtr;
|
||
|
|
typedef std::vector< ActiveUniformPtr > ActiveUniformList;
|
||
|
|
|
||
|
|
|
||
|
|
protected:
|
||
|
|
/** PCPO is an OSG-internal encapsulation of glPrograms per-GL context. */
|
||
|
|
class PerContextProgObj : public osg::Referenced
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
PerContextProgObj(const Program* program, unsigned int contextID);
|
||
|
|
PerContextProgObj(const PerContextProgObj& rhs);
|
||
|
|
|
||
|
|
const GLuint getHandle() {return _glProgramHandle;}
|
||
|
|
|
||
|
|
bool isDirty() const {return _dirty;}
|
||
|
|
void markAsDirty();
|
||
|
|
void linkProgram();
|
||
|
|
void useProgram() const;
|
||
|
|
|
||
|
|
void applyUniforms( osg::State& state ) const;
|
||
|
|
|
||
|
|
protected: /*methods*/
|
||
|
|
PerContextProgObj();
|
||
|
|
~PerContextProgObj();
|
||
|
|
|
||
|
|
protected: /*data*/
|
||
|
|
/** Pointer to our parent Program */
|
||
|
|
const Program* _program;
|
||
|
|
/** Pointer to this context's extension functions */
|
||
|
|
osg::ref_ptr<GL2Extensions> _extensions;
|
||
|
|
/** Handle to the actual OpenGL glProgram */
|
||
|
|
GLuint _glProgramHandle;
|
||
|
|
/** Do we need to be linked? */
|
||
|
|
bool _dirty;
|
||
|
|
/** Queue of UniformValues awaiting assignment */
|
||
|
|
const unsigned int _contextID;
|
||
|
|
/** List of PCPO's active uniforms */
|
||
|
|
ActiveUniformList _activeUniformList;
|
||
|
|
};
|
||
|
|
|
||
|
|
protected: /*methods*/
|
||
|
|
virtual ~Program();
|
||
|
|
/** Get the PCPO for a particular GL context */
|
||
|
|
PerContextProgObj* getPCPO(unsigned int contextID) const;
|
||
|
|
|
||
|
|
protected: /*data*/
|
||
|
|
bool _avoidRedundantUniformSetting;
|
||
|
|
std::string _comment;
|
||
|
|
ShaderList _shaderList;
|
||
|
|
mutable osg::buffered_value< osg::ref_ptr<PerContextProgObj> > _pcpoList;
|
||
|
|
|
||
|
|
private:
|
||
|
|
const Program& operator=(const Program&);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*EOF*/
|