GL_OES_point_size_array

Supported Hardware

Series5, Series5XT, Series6, Series6XE, Series6XT

Valid APIs

OpenGL ES 1.x

Description

Points are usually rendered at a fixed size by OpenGL ES, according to the value set by glPointSize. This size is applied uniformly to all rendered points, which limits their capabilities. This extension adds the ability to use an array of values instead, so that each point can have different sizes.

Note

This functionality is core to OpenGL ES 2.0 and 3.0.

Registry Link

http://www.khronos.org/registry/gles/extensions/OES/OES_point_size_array.txt

Example

// Setup an array of points to be rendered - three in this case 
GLfloat pointPositions[] =  
{ 
	 0.4f, 0.7f, 0.2f, 
	 0.1f,-0.5f, 0.2f,  
	-0.0f, 0.7f, 0.2f 
}; 
// Set the vertex pointer as normal 
glVertexPointer(3, GL_FLOAT, 0, pointPositions); 
// Enable the vertex array 
glEnableClientState(GL_VERTEX_ARRAY); 
// Create an array of sizes for these points 
GLfloat pointSizes[] =  
{ 
	1.0f, 
	2.0f, 
	0.7f 
}; 
// Set the point sizes via this extension 
glPointSizePointerOES(3, GL_FLOAT, 0, pointPositions); 
// Enable the point size array 
glEnableClientState(GL_POINT_SIZE_ARRAY_OES); 
// Draw the points 
glDraw(GL_POINTS, ...);