Implement a small texture wrapper.

Allows for RAII use of OpenGL textures.

src/MultiImageVisualisation.cpp

@@ -49,18 +49,13 @@ MultiImageVisualisation::MultiImageVisualisation(const fmri::LayerData &layer)
     }
 }
 
-MultiImageVisualisation::~MultiImageVisualisation()
-{
-    glDeleteTextures(0, &texture);
-}
-
 void MultiImageVisualisation::render()
 {
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
     glEnableClientState(GL_VERTEX_ARRAY);
     glEnable(GL_TEXTURE_2D);
     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-    glBindTexture(GL_TEXTURE_2D, texture);
+    texture.bind(GL_TEXTURE_2D);
     glTexCoordPointer(2, GL_FLOAT, 0, texCoordBuffer.get());
     glVertexPointer(3, GL_FLOAT, 0, vertexBuffer.get());
     glDrawArrays(GL_QUADS, 0, nodePositions_.size() / 3 * 4);