Highlight highscore using draw function - objective-c

Question

I've implemented a highscore layer and now I want to highlight a new entry in the highscore. This is my current draw function but it doesn't work and gives this error multiple times:
OpenGL error 0x0501 in -[CCSprite draw] 530
Draw function:
- (void)draw {
[super draw];
if(currentScorePosition < 0) return;
ccDrawColor4F(0.0f, 0.0f, 0.0f, 0.2f);
float w = 320.0f;
float h = 27.0f;
float x = (320.0f - w) / 2.0f;
float y = 359.0f - currentScorePosition * h;
GLfloat vertices[4][2];
GLubyte indices[4] = { 0, 1, 3, 2 };
vertices[0][0] = x; vertices[0][1] = y;
vertices[1][0] = x+w; vertices[1][1] = y;
vertices[2][0] = x+w; vertices[2][1] = y+h;
vertices[3][0] = x; vertices[3][1] = y+h;
ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position );
kmGLPushMatrix();
glVertexAttribPointer( currentScorePosition, 2, GL_FLOAT, GL_FALSE, vertices, 0 );
glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, indices);
kmGLPopMatrix();
ccDrawColor4F(1.0f, 1.0f, 1.0f, 1.0f);
}

Answer 1

Instead of manual openGL call to draw primitive, use Cocos2d calls.
void ccDrawSolidPoly( const CGPoint *poli, NSUInteger numberOfPoints, ccColor4F color );
For example, Here is my custom draw:
-(void) draw {
CGPoint vertices[16];
vertices[0] = ccp(0,radius);
vertices[1] = ccp(0,radius*(1-kappa));
vertices[2] = ccp(radius*(1-kappa),0);
vertices[3] = ccp(radius,0);
vertices[4] = ccp(size.width-radius,0);
vertices[5] = ccp(size.width-radius*(1-kappa),0);
vertices[6] = ccp(size.width,radius*(1-kappa));
vertices[7] = ccp(size.width,radius);
vertices[8] = ccp(size.width,size.height - radius);
vertices[9] = ccp(size.width,size.height - radius*(1-kappa));
vertices[10] = ccp(size.width-radius*(1-kappa),size.height);
vertices[11] = ccp(size.width-radius,size.height);
vertices[12] = ccp(radius,size.height);
vertices[13] = ccp(radius*(1-kappa),size.height);
vertices[14] = ccp(0,size.height-radius*(1-kappa));
vertices[15] = ccp(0,size.height-radius);
CGPoint polyVertices[4*cornerSegments+1];
appendCubicBezier(0*cornerSegments,polyVertices,vertices[0], vertices[1], vertices[2], vertices[3], cornerSegments);
appendCubicBezier(1*cornerSegments,polyVertices,vertices[4], vertices[5], vertices[6], vertices[7], cornerSegments);
appendCubicBezier(2*cornerSegments,polyVertices,vertices[8], vertices[9], vertices[10], vertices[11], cornerSegments);
appendCubicBezier(3*cornerSegments,polyVertices,vertices[12], vertices[13], vertices[14], vertices[15], cornerSegments);
polyVertices[4*cornerSegments] = vertices[0];
CCNode *node=[self getChildByTag:13435];
if(!node)
{
CCDrawNode *draw = [[[CCDrawNode alloc] init] autorelease];
[draw drawPolyWithVerts:polyVertices count:4*cornerSegments fillColor:ccc4f(fillColor.r, fillColor.g, fillColor.b, fillColor.a) borderWidth:2.0 borderColor:ccc4f(1.0, 0.5, 0.5, 0.8)];
[self addChild:draw z:0 tag:13435];
}
}