Only update the shader point size in OpenGL ES 2 when it's been modified, rather than before every draw.

src/modules/graphics/opengl/Shader.cpp

@@ -75,6 +75,7 @@ Shader::Shader(const ShaderSource &source)
 	, builtinAttributes()
 	, lastCanvas((Canvas *) -1)
 	, lastViewport()
+	, lastPointSize(0.0f)
 {
 	if (source.vertex.empty() && source.pixel.empty())
 		throw love::Exception("Cannot create shader: no source code!");
@@ -216,6 +217,8 @@ bool Shader::loadVolatile()
     lastCanvas = (Canvas *) -1;
     lastViewport = OpenGL::Viewport();
 
+	lastPointSize = 0.0f;
+
 	// zero out active texture list
 	activeTexUnits.clear();
 	activeTexUnits.insert(activeTexUnits.begin(), gl.getMaxTextureUnits() - 1, 0);
@@ -709,6 +712,16 @@ void Shader::checkSetScreenParams()
 	lastViewport = view;
 }
 
+void Shader::checkSetPointSize(float size)
+{
+	if (size == lastPointSize)
+		return;
+
+	sendBuiltinFloat(BUILTIN_POINT_SIZE, 1, &size, 1);
+
+	lastPointSize = size;
+}
+
 const std::map<std::string, Object *> &Shader::getBoundRetainables() const
 {
 	return boundRetainables;