gsabran
diff --git a/‎HelloOpenGL_Swift.xcodeproj/project.xcworkspace/xcuserdata/guigou.xcuserdatad/UserInterfaceState.xcuserstate
-2 Bytes b/‎HelloOpenGL_Swift.xcodeproj/project.xcworkspace/xcuserdata/guigou.xcuserdatad/UserInterfaceState.xcuserstate
-2 Bytes
diff --git a/‎HelloOpenGL_Swift/OpenGLView.swift
+2 b/‎HelloOpenGL_Swift/OpenGLView.swift
+2
@@ -260,6 +260,8 @@ class OpenGLView: UIView {
     }
 
     func render(displayLink: CADisplayLink) -> Int {
+        glBlendFunc(GLenum(GL_ONE), GLenum(GL_ONE_MINUS_SRC_ALPHA));
+        glEnable(GLenum(GL_BLEND));
         glClearColor(0, 104.0/255.0, 55.0/255.0, 1.0)
         glClear(GLbitfield(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT))
         glEnable(GLenum(GL_DEPTH_TEST))
Original file line number	Diff line number	Diff line change
`@@ -260,6 +260,8 @@ class OpenGLView: UIView {`
`260`	`260`	`}`
`261`	`261`
`262`	`262`	`func render(displayLink: CADisplayLink) -> Int {`
	`263`	`+ glBlendFunc(GLenum(GL_ONE), GLenum(GL_ONE_MINUS_SRC_ALPHA));`
	`264`	`+ glEnable(GLenum(GL_BLEND));`
`263`	`265`	`glClearColor(0, 104.0/255.0, 55.0/255.0, 1.0)`
`264`	`266`	`glClear(GLbitfield(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT))`
`265`	`267`	`glEnable(GLenum(GL_DEPTH_TEST))`