opengl-es

问题 I have designed a 3D model in .obj format and imported using min3d framework. Its a cube with different colors. I want to give a Toast with a message for a particular color when the side of that particular color is touched. How do I do this in android 1.6 ? 回答1: I'm not sure about the particulars in android/OpenGL-es, but in general : You have to calculate a line that starts at the camera's position and passes through the screen coordinate pressed/clicked/etc and determine where that line

问题 So, I am implementing a screen to apply Effects (grain, negative, etc) to an image a user has taken from their camera or an image taken from their gallery. I am able to take the image that they have selected or taken and display it to them through the use of OpenGL at full resolution ( or scaled down maintaining aspect ratio depending on the max texture size of their device and the size of the image). Also, selecting the effect and applying to the texture works completely fine. As does taking

问题 I'm developing an app for applying effects to the camera image in real-time. Currently I'm using the MediaMuxer class in combination with MediaCodec . Those classes were implemented with Android 4.3. Now I wanted to redesign my app and make it compatible for more devices. The only thing I found in the internet was a combination of FFmpeg and OpenCV, but I read that the framerate is not very well if I want to use a high resolution. Is there any possibility to encode video in real-time while

问题 I'm trying to create a simple Android application using min3d library Previously I have downloaded apk file from market with examples of min3d library. Every example in this application works fine on real phone. It means phone has not problems with 3d. I have chekouted source code of min3d with examples and created simple Android application with single activity copypasted from examples: import min3d.core.Object3dContainer; import min3d.core.RendererActivity; import min3d.objectPrimitives.Box

问题 I would like to rewrite the Apple source code, GLPaint application, but not using OpenGL like the example, I would like to use Core Graphics library. But I stuck in displaying the texture like GLPaint. This is my code in Core Graphics: - (void) drawLineFromPoint: (CGPoint) fromPoint toPoint: (CGPoint) toPoint { UIGraphicsBeginImageContext(self.frame.size); CGContextRef context = UIGraphicsGetCurrentContext(); [drawImage.image drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size

问题 I am having trouble implementing a game pause blur screen to render during the gamepause state. I need to take a picture or texture of the current screen i.e gamerunning state, just when the user pauses the screen . Maybe store it to memory, blur it then render it to screen to achieve a nice blur, Gaussian blur effect like they do in popular games like Angry birds. I tried implementing using a screenshot, but the process of screen capture makes the game freeze for a few seconds which is not

问题 I'm trying to render self-transparent textures to the framebuffer, but I'm getting not what I guessed: everything previously rendered on the framebuffer gets ignored, and this texture blends with the colour I cleaned my main canvas. That's what I would like to get, but without using framebuffers: package test; import com.badlogic.gdx.*; import com.badlogic.gdx.graphics.*; import com.badlogic.gdx.graphics.g2d.*; public class GdxTest extends ApplicationAdapter { SpriteBatch batch; Texture img;

问题 Does anyone know if it is possible to use NPOT textures on Android's OpenGL ES renderer? 回答1: Yes, for OpenGL ES 2.0, NPOT textures are supported in the core specification with some limitations in wrap modes, and 3D textures. The limitations are lifted when using the GL_OES_texture_npot extension. For OpenGL ES 1.x, there is no extension to support NPOT textures. 回答2: It appears that Froyo does has a NPOT implementation for OpenglES 1.1. However, so far I can not get UI to displace with

问题 I'm building a cross-platform game in C++, using OpenGL ES 2.0. The target is iPhone at the moment. I'm a newbie to coding games, but not a newbie to coding. I'm confused about how to architect the game. But specifically, I'm asking about how to setup the objects needed to position models in the scene. I have an object that represents a scene. There are 5 scenes. Only one scene is shown at a time. A scene is like a game level. Each scene has all the code for rendering, game logic, mouse and

问题 In reference to this question Drawing a line between two points using SceneKit I'm drawing a line in 3D and want to make it thicker by using this code func renderer(aRenderer: SCNSceneRenderer, willRenderScene scene: SCNScene, atTime time: NSTimeInterval) { //Makes the lines thicker glLineWidth(20) } but it doesn't work, iOS 8.2. Is there another way? Update From the docs https://developer.apple.com/library/prerelease/ios/documentation/SceneKit/Reference/SCNSceneRendererDelegate_Protocol