Replace uses of deprecated gluBuild2DMipmaps

...with glGenerateMipmap (since OpenGL 3.0) or GL_GENERATE_MIPMAP (since OpenGL
1.4).  Appears to make slide transitions not worse on Linux and Mac OS X, while
actually improving them on Windows (where the transitions were rendered in just
white w/o textures), at least on the specific machines I tested on.

Change-Id: I1e4c115223521acd3f254bdbf0330a7830160a9c

slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionerImpl.cxx

@@ -957,6 +957,31 @@ namespace
     }
 }
 
+namespace {
+
+void buildMipmaps(
+    GLint internalFormat, GLsizei width, GLsizei height, GLenum format,
+    GLenum type, const void * data)
+{
+    if (GLEW_ARB_framebuffer_object) {
+        glTexImage2D(
+            GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type,
+            data);
+        glGenerateMipmap(GL_TEXTURE_2D);
+    } else {
+        glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
+        glTexImage2D(
+            GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type,
+            data);
+        glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_FALSE);
+    }
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(
+        GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+}
+
+}
+
 void OGLTransitionerImpl::impl_createTexture(
                      bool useMipmap,
                      uno::Sequence<sal_Int8>& data,
@@ -970,17 +995,12 @@ void OGLTransitionerImpl::impl_createTexture(
             maSlideBitmapLayout.ColorSpace->convertToIntegerColorSpace(
                 data,
                 getOGLColorSpace()));
-        SAL_WNODEPRECATED_DECLARATIONS_PUSH //TODO: 10.9 gluBuild2DMipmaps
-        gluBuild2DMipmaps(GL_TEXTURE_2D,
-                          4,
+        buildMipmaps(     4,
                           maSlideSize.Width,
                           maSlideSize.Height,
                           GL_RGBA,
                           GL_UNSIGNED_BYTE,
                           &tempBytes[0]);
-        SAL_WNODEPRECATED_DECLARATIONS_POP
-        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR); //TRILINEAR FILTERING
 
         //anistropic filtering (to make texturing not suck when looking at polygons from oblique angles)
         GLfloat largest_supported_anisotropy;
@@ -992,11 +1012,7 @@ void OGLTransitionerImpl::impl_createTexture(
             glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
             glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
         } else {
-            SAL_WNODEPRECATED_DECLARATIONS_PUSH //TODO: 10.9 gluBuild2DMipmaps
-            gluBuild2DMipmaps( GL_TEXTURE_2D, pFormat->nInternalFormat, maSlideSize.Width, maSlideSize.Height, pFormat->eFormat, pFormat->eType, &data[0] );
-            SAL_WNODEPRECATED_DECLARATIONS_POP
-            glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
-            glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR ); //TRILINEAR FILTERING
+            buildMipmaps( pFormat->nInternalFormat, maSlideSize.Width, maSlideSize.Height, pFormat->eFormat, pFormat->eType, &data[0] );
 
             //anistropic filtering (to make texturing not suck when looking at polygons from oblique angles)
             GLfloat largest_supported_anisotropy;