Add some default inits for opengl helper functions, as suggested by greenbird

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4264 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLExtensionHandler.h

@@ -1278,6 +1278,8 @@ inline void COpenGLExtensionHandler::extGlClientActiveTexture(GLenum texture)
 
 inline void COpenGLExtensionHandler::extGlGenPrograms(GLsizei n, GLuint *programs)
 {
+	if (programs)
+		memset(programs,0,n*sizeof(GLuint));
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGenProgramsARB)
 		pGlGenProgramsARB(n, programs);
@@ -1348,7 +1350,7 @@ inline void COpenGLExtensionHandler::extGlDeletePrograms(GLsizei n, const GLuint
 #endif
 }
 
-inline void COpenGLExtensionHandler::extGlProgramLocalParameter4fv(GLenum n, GLuint i, const GLfloat * f)
+inline void COpenGLExtensionHandler::extGlProgramLocalParameter4fv(GLenum n, GLuint i, const GLfloat *f)
 {
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlProgramLocalParameter4fvARB)
@@ -1570,7 +1572,8 @@ inline void COpenGLExtensionHandler::extGlDeleteShader(GLuint shader)
 
 inline void COpenGLExtensionHandler::extGlGetAttachedObjects(GLhandleARB program, GLsizei maxcount, GLsizei* count, GLhandleARB* shaders)
 {
-	*count=0;
+	if (count)
+		*count=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetAttachedObjectsARB)
 		pGlGetAttachedObjectsARB(program, maxcount, count, shaders);
@@ -1583,7 +1586,8 @@ inline void COpenGLExtensionHandler::extGlGetAttachedObjects(GLhandleARB program
 
 inline void COpenGLExtensionHandler::extGlGetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders)
 {
-	*count=0;
+	if (count)
+		*count=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetAttachedShaders)
 		pGlGetAttachedShaders(program, maxcount, count, shaders);
@@ -1596,6 +1600,8 @@ inline void COpenGLExtensionHandler::extGlGetAttachedShaders(GLuint program, GLs
 
 inline void COpenGLExtensionHandler::extGlGetInfoLog(GLhandleARB object, GLsizei maxLength, GLsizei *length, GLcharARB *infoLog)
 {
+	if (length)
+		*length=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetInfoLogARB)
 		pGlGetInfoLogARB(object, maxLength, length, infoLog);
@@ -1608,6 +1614,8 @@ inline void COpenGLExtensionHandler::extGlGetInfoLog(GLhandleARB object, GLsizei
 
 inline void COpenGLExtensionHandler::extGlGetShaderInfoLog(GLuint shader, GLsizei maxLength, GLsizei *length, GLchar *infoLog)
 {
+	if (length)
+		*length=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetShaderInfoLog)
 		pGlGetShaderInfoLog(shader, maxLength, length, infoLog);
@@ -1620,6 +1628,8 @@ inline void COpenGLExtensionHandler::extGlGetShaderInfoLog(GLuint shader, GLsize
 
 inline void COpenGLExtensionHandler::extGlGetProgramInfoLog(GLuint program, GLsizei maxLength, GLsizei *length, GLchar *infoLog)
 {
+	if (length)
+		*length=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetProgramInfoLog)
 		pGlGetProgramInfoLog(program, maxLength, length, infoLog);
@@ -1828,6 +1838,8 @@ inline void COpenGLExtensionHandler::extGlGetActiveUniformARB(GLhandleARB progra
 		GLuint index, GLsizei maxlength, GLsizei *length,
 		GLint *size, GLenum *type, GLcharARB *name)
 {
+	if (length)
+		*length=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetActiveUniformARB)
 		pGlGetActiveUniformARB(program, index, maxlength, length, size, type, name);
@@ -1842,6 +1854,8 @@ inline void COpenGLExtensionHandler::extGlGetActiveUniform(GLuint program,
 		GLuint index, GLsizei maxlength, GLsizei *length,
 		GLint *size, GLenum *type, GLchar *name)
 {
+	if (length)
+		*length=0;
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetActiveUniform)
 		pGlGetActiveUniform(program, index, maxlength, length, size, type, name);
@@ -1955,6 +1969,8 @@ inline void COpenGLExtensionHandler::extGlDeleteFramebuffers(GLsizei n, const GL
 
 inline void COpenGLExtensionHandler::extGlGenFramebuffers(GLsizei n, GLuint *framebuffers)
 {
+	if (framebuffers)
+		memset(framebuffers,0,n*sizeof(GLuint));
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGenFramebuffers)
 		pGlGenFramebuffers(n, framebuffers);
@@ -2038,6 +2054,8 @@ inline void COpenGLExtensionHandler::extGlDeleteRenderbuffers(GLsizei n, const G
 
 inline void COpenGLExtensionHandler::extGlGenRenderbuffers(GLsizei n, GLuint *renderbuffers)
 {
+	if (renderbuffers)
+		memset(renderbuffers,0,n*sizeof(GLuint));
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGenRenderbuffers)
 		pGlGenRenderbuffers(n, renderbuffers);
@@ -2131,6 +2149,8 @@ inline void COpenGLExtensionHandler::extGlDrawBuffers(GLsizei n, const GLenum *b
 
 inline void COpenGLExtensionHandler::extGlGenBuffers(GLsizei n, GLuint *buffers)
 {
+	if (buffers)
+		memset(buffers,0,n*sizeof(GLuint));
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGenBuffersARB)
 		pGlGenBuffersARB(n, buffers);
@@ -2215,7 +2235,7 @@ inline void *COpenGLExtensionHandler::extGlMapBuffer(GLenum target, GLenum acces
 #endif
 }
 
-inline GLboolean COpenGLExtensionHandler::extGlUnmapBuffer (GLenum target)
+inline GLboolean COpenGLExtensionHandler::extGlUnmapBuffer(GLenum target)
 {
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlUnmapBufferARB)
@@ -2229,7 +2249,7 @@ inline GLboolean COpenGLExtensionHandler::extGlUnmapBuffer (GLenum target)
 #endif
 }
 
-inline GLboolean COpenGLExtensionHandler::extGlIsBuffer (GLuint buffer)
+inline GLboolean COpenGLExtensionHandler::extGlIsBuffer(GLuint buffer)
 {
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlIsBufferARB)
@@ -2243,7 +2263,7 @@ inline GLboolean COpenGLExtensionHandler::extGlIsBuffer (GLuint buffer)
 #endif
 }
 
-inline void COpenGLExtensionHandler::extGlGetBufferParameteriv (GLenum target, GLenum pname, GLint *params)
+inline void COpenGLExtensionHandler::extGlGetBufferParameteriv(GLenum target, GLenum pname, GLint *params)
 {
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetBufferParameterivARB)
@@ -2255,7 +2275,7 @@ inline void COpenGLExtensionHandler::extGlGetBufferParameteriv (GLenum target, G
 #endif
 }
 
-inline void COpenGLExtensionHandler::extGlGetBufferPointerv (GLenum target, GLenum pname, GLvoid **params)
+inline void COpenGLExtensionHandler::extGlGetBufferPointerv(GLenum target, GLenum pname, GLvoid **params)
 {
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (pGlGetBufferPointervARB)
@@ -2564,3 +2584,4 @@ inline void COpenGLExtensionHandler::extGlBlendEquation(GLenum mode)
 #endif
 
 #endif
+