/* Set up rendering of the leaf nodes. */
void VertexBufferLeaf::setupRendering( VertexBufferState& state,
GLuint* data ) const
{
switch( state.getRenderMode() )
{
case RENDER_MODE_IMMEDIATE:
break;
case RENDER_MODE_BUFFER_OBJECT:
{
const char* charThis = reinterpret_cast< const char* >( this );
if( data[VERTEX_OBJECT] == state.INVALID )
data[VERTEX_OBJECT] = state.newBufferObject( charThis + 0 );
glBindBuffer( GL_ARRAY_BUFFER, data[VERTEX_OBJECT] );
glBufferData( GL_ARRAY_BUFFER, _vertexLength * sizeof( Vertex ),
&_globalData.vertices[_vertexStart], GL_STATIC_DRAW );
if( data[NORMAL_OBJECT] == state.INVALID )
data[NORMAL_OBJECT] = state.newBufferObject( charThis + 1 );
glBindBuffer( GL_ARRAY_BUFFER, data[NORMAL_OBJECT] );
glBufferData( GL_ARRAY_BUFFER, _vertexLength * sizeof( Normal ),
&_globalData.normals[_vertexStart], GL_STATIC_DRAW );
if( data[COLOR_OBJECT] == state.INVALID )
data[COLOR_OBJECT] = state.newBufferObject( charThis + 2 );
if( state.useColors() )
{
glBindBuffer( GL_ARRAY_BUFFER, data[COLOR_OBJECT] );
glBufferData( GL_ARRAY_BUFFER, _vertexLength * sizeof( Color ),
&_globalData.colors[_vertexStart], GL_STATIC_DRAW );
}
if( data[INDEX_OBJECT] == state.INVALID )
data[INDEX_OBJECT] = state.newBufferObject( charThis + 3 );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, data[INDEX_OBJECT] );
glBufferData( GL_ELEMENT_ARRAY_BUFFER,
_indexLength * sizeof( ShortIndex ),
&_globalData.indices[_indexStart], GL_STATIC_DRAW );
break;
}
case RENDER_MODE_DISPLAY_LIST:
default:
{
if( data[0] == state.INVALID )
{
char* key = (char*)( this );
if( state.useColors( ))
++key;
data[0] = state.newDisplayList( key );
}
glNewList( data[0], GL_COMPILE );
renderImmediate( state );
glEndList();
break;
}
}
}
int main()
{
fprintf(stderr, "Running smug VBO test. Switch rendering mode with F1 and F2\n");
Graphics_init();
generateLayers();
double time = glfwGetTime();
double lastfps = time;
int fps = 0;
int rendermode = 0;
while(!done)
{
time = glfwGetTime();
if (glfwGetKey(GLFW_KEY_ESC))
{
done = 1;
}
if (glfwGetKey(GLFW_KEY_F1))
{
fprintf(stderr, "Rendermode: immediate\n");
rendermode = 0;
}
if (glfwGetKey(GLFW_KEY_F2))
{
fprintf(stderr, "Rendermode: retained\n");
rendermode = 1;
}
if (rendermode)
renderRetained();
else
renderImmediate();
fps++;
if (time - lastfps >= 1.0)
{
fprintf(stderr, "FPS: %i, objects: %i\n", (int)((double)fps /(time-lastfps)), LAYERS*BOXES);
fps = 0;
lastfps += 1.0;
}
glfwSwapBuffers();
}
glfwTerminate();
fprintf(stderr, "Done.\n");
return 0;
}
/* Draw the leaf. */
void VertexBufferLeaf::draw( VertexBufferState& state ) const
{
if ( state.stopRendering( ))
return;
switch( state.getRenderMode() )
{
case RENDER_MODE_IMMEDIATE:
renderImmediate( state );
return;
case RENDER_MODE_BUFFER_OBJECT:
renderBufferObject( state );
return;
case RENDER_MODE_DISPLAY_LIST:
default:
renderDisplayList( state );
return;
}
}
