some ifdef's added for compatibility

diff --git a/src/PIPELINE/VISU_OpenGLPointSpriteMapper.cxx b/src/PIPELINE/VISU_OpenGLPointSpriteMapper.cxx
index 73868c2cbe28b43428b36f26afd96016bd0e9c41..81504175b762da6025ee0e5904a228a08d5a6f1f 100755 (executable)
--- a/src/PIPELINE/VISU_OpenGLPointSpriteMapper.cxx
+++ b/src/PIPELINE/VISU_OpenGLPointSpriteMapper.cxx
@@ -79,6 +79,7 @@ PFNGLBINDPROGRAMARBPROC           glBindProgramARB           = NULL;
 PFNGLPROGRAMSTRINGARBPROC         glProgramStringARB         = NULL;
 PFNGLPROGRAMENVPARAMETER4FARBPROC glProgramEnvParameter4fARB = NULL;
 
+#ifdef GL_ARB_shader_objects
 PFNGLSHADERSOURCEARBPROC          glShaderSourceARB          = NULL;
 PFNGLCREATESHADEROBJECTARBPROC    glCreateShaderObjectARB    = NULL;
 PFNGLCOMPILESHADERARBPROC         glCompileShaderARB         = NULL;
@@ -88,6 +89,7 @@ PFNGLLINKPROGRAMPROC              glLinkProgramARB           = NULL;
 PFNGLUSEPROGRAMOBJECTARBPROC      glUseProgramObjectARB      = NULL;
 PFNGLGETOBJECTPARAMETERIVARBPROC  glGetObjectParameterivARB  = NULL;
 PFNGLGETINFOLOGARBPROC            glGetInfoLogARB            = NULL;
+#endif
 
 unsigned int shaderId;
 
@@ -231,6 +233,7 @@ void initShader()
   //glBindProgramARB( GL_VERTEX_PROGRAM_ARB, shaderId );
   //glProgramStringARB( GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen( shader ), shader );
 
+#ifdef GL_ARB_shader_objects
   GLhandleARB v = glCreateShaderObjectARB( GL_VERTEX_SHADER_ARB );
   glShaderSourceARB( v, 1, (const GLcharARB**)&shader, NULL );
   glCompileShaderARB( v );
@@ -243,6 +246,8 @@ void initShader()
   //printInfoLog( p );
 
   glUseProgramObjectARB( p );
+#endif
+
   /*
   cout << "Shader from " << fileName << endl;
   for( int i = 0; i < strlen( shader ); i++ )
@@ -315,6 +320,7 @@ void VISU_OpenGLPointSpriteMapper::InitializeExtensions()
   glProgramStringARB         = (PFNGLPROGRAMSTRINGARBPROC)dlsym( libHandle, "glProgramStringARB" );
   glProgramEnvParameter4fARB = (PFNGLPROGRAMENVPARAMETER4FARBPROC)dlsym( libHandle, "glProgramEnvParameter4fARB" );
 
+#ifdef GL_ARB_shader_objects
   glShaderSourceARB          = (PFNGLSHADERSOURCEARBPROC)dlsym( libHandle, "glShaderSourceARB" );
   glCreateShaderObjectARB    = (PFNGLCREATESHADEROBJECTARBPROC)dlsym( libHandle, "glCreateShaderObjectARB" );
   glCompileShaderARB         = (PFNGLCOMPILESHADERARBPROC)dlsym( libHandle, "glCompileShaderARB" );
@@ -324,6 +330,7 @@ void VISU_OpenGLPointSpriteMapper::InitializeExtensions()
   glUseProgramObjectARB      = (PFNGLUSEPROGRAMOBJECTARBPROC)dlsym( libHandle, "glUseProgramObjectARB" );
   glGetObjectParameterivARB  = (PFNGLGETOBJECTPARAMETERIVARBPROC)dlsym( libHandle, "glGetObjectParameterivARB" );
   glGetInfoLogARB            = (PFNGLGETINFOLOGARBPROC)dlsym( libHandle, "glGetInfoLogARB" );
+#endif
 
   initShader();
   setShaderConstants();