Android opengl video texture You make an OpenGL texture, make a SurfaceTexture out of it, and pass that to vlc to use as the target of the frame data. OpenGL was used to Fig. In the ExtractMpegFramesTest that i have used for extracting the frames and processing on the GPU, the context is defined like so: (EGL10) EGLContext. 0 multiple textures and Camera. How I can load an image as a texture and rendering it through GLES to use the MediaCodec Surface input approach? I was started from EncodeAndMuxTest example. You need GLSurfaceView, where you bind camera frame as a texture (in GLSurfaceView implement Camera. Another thing to note is that these texture coordinates are like other OpenGL coordinates: The t (or y) axis is pointing upwards, so that values get higher the higher you go. GL_TEXTURE_2D, level, bmp, 0); android; opengl-es; textures; fbo; or ask your own question. if i get my textures loading on a separate thread ill report back, but it might be a few days till i get it working. 0, we will have a separate texture object. Basically, what I want to do is to take lesser dimension of video, then, based on this side, define offsets for bigger side and crop it out. 1 and native code you can load the video frames into textures much faster by avoiding that and using the EGL Image Extensions instead. Renderer The Android SDK doesn't come with any easy way to draw text on OpenGL views. Like what you read? Don’t forget to share this post and clap. Free(), resize the array, the texture size, pin the new array again with pinHandler = GCHandle. 6 How to manage multiple textures in OpenGL ES 2. Android OpenGL2. I found a lot of tutorials but none of them explain clearly how to put different textures in each face and none of them gives easy code examples of how to do it. 0 supports using non-power of two textures, but I have no experience with shaders / anything else new in 2. Android 4K Video Record - Everything works fine but produced video file always 1080p? How to obtain the RGB colors of the camera texture in OpenGL ES 2. Afterwards I can use the sensor values to rotate the sphere. Render common strings to textures, and simply draw those textures. nehe Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I, for the life of me, am unable to get a simple sprite drawing to screen using OpenGL ES and Java. How do I use it to 'transfer texture images' ? Also I read somewhere that egl defines textures as shared by default. OpenGL ES texture memory. The Android: OpenGL ES2 Texture not working. Android OpenGLES 2. 43. glIsTexture is returning true even if the texture name is not valid. It seems that an OpenGL texture is created and then this is used to create an Android SurfaceTexture which can then be passed to setPreviewTexture(). In this section we will describe how to render a compressed texture onto the screen. This example is not about stability, but about simplicity so you could overview and understand the whole process of OpenGL context initialization under Android. render video with GLSurfaceView. 0 You need to create the texture name in your OpenGL ES context by calling glGenTextures(), and then call SurfaceTexture. This Android supports GPU post-processing of protected video content. getContext(). OpenGL ES 2 Sphere Rendering. Converting FFmpeg frame to OpenGL ES texture. The GLSurfaceView. order (ByteOrder Map Texture around Sphere OpenGL ES Android. (s, t) represents a texel on the texture, which is then mapped to the polygon. I donot find any resource or guidance for this on web. If all you want to do is to play a video in a GL surface, it's possible. 0 methods! The two APIs are not interchangeable and A 640x480 video has to be scaled up to 1024x1024, for example. Android OpenGL transparency on Samsung Galaxy SIII. I'm itching to code and test HDR rendering on Android. glGenTextures( 1, &textureId ); glBindTexture(GL_TEXTURE_EXTERNAL_OES, textureId); I've a local video that I want to pass as a texture to an openGL shader. This question refers to this one : How to render Android's YUV-NV21 camera image on the background in libgdx with OpenGLES 2. Apparently GLES20. I know that OpenGL ES 2. Still, as long as everything is in the same process, there's no big point to bother with external textures. I am making a 2D graphical app that will display planets. ] opengl-es; opengl-es-2. This is slow and bad, but the most direct approach. Learn how to configure OpenGL ES for your game in this topic. Create video file from images in Android. 1. 0/1. The SurfaceTexture is basically your entry point into the OpenGL layer. I found that it's possible to get frames from a video by using Android MediaExtractor and MediaCodec API together with Surface texture, like below. Android and OpenGL gives black frame at startup. 0, doing an SDL/C++/ndk thing. android; opengl-es; android-mediacodec; mediamuxer; Share. 0 black texture. TextureView. It sounds like you're generating or decoding the video in software, though, which puts a mild spin on things (though you do have a SurfaceTexture declared in your code, which is odd). I know the solution needs unity+exoplayer+opengl+android knowledge at the same time, Unity3d Render openGL FBO to texture in android (java) 0 I need to understand how to put different textures on each face of a cube (OpenGL ES 1). I've searched the web for several days and pieced together the following code: public void loadFrameBuffer Note that depth textures Android OpenGL Texture not rendered. I found two types of texture during my study: GL_TEXTURE_2D; and managed entirely by OpenGL ES. 0 on android , YUV to RGB and Rendering with ffMpeg. Lighting on OpenGL ES sphere not smooth. You can use the Media Effects framework to easily apply lots of impressive visual effects to photos and videos in your Android app. To pass through the video frame as a texture, I use a simple program It then creates a new openGL texture object, and then calls back to the MainActivity with the texture object ID. Either way, the texture memory used would not be reflected in your application. It is discussed with example code in this article. // texture coordinate attribute location handle in vertex shader private int textureCoordinateLocation; // y_texture sampler2D location handle in fragment shader private int Hi Kieran, Im trying to convert format and play audio or video using FFmpeg and android ndk. 2 device with SDK-only support (no NDK) At least someone managed to render text this way: Rendering Text in OpenGL on Android. Contribute to CharonChui/AndroidNote development by creating an account on GitHub. 3. I'm trying to record a video using MediaCodec on Android using OpenGL ES 2 contexts. OpenGL ES 2. returning an android. This story is the second part of the OpenGL ES rendering series. 0; Share. 1 Opengl Es 2. If resolution can change, add a callback function to the C# side that you can call to resize the array on the C# side if the width and height don't match anymore then free the current handler with pinHandler. How developers (really) used AI coding tools in 2024 I'm trying to learn OpenGL, and it's a bit daunting. This lets apps use the GPU for complex, nonlinear video effects (such as warps), mapping protected video content onto textures for use in general graphics The trick to playing video with effects on Android is to use OpenGL for actual frame display and then use (API 11+) SurfaceTexture class to render video as a texture on screen. texImage2D, but when I use the textures generated I get problems with my alpha: they are darker than wanted. panotrama. It is merely a convenience class that makes the most common uses of OpenGL under Android (using OpenGL to draw the content of a view) very easy. 0 to do video processing. Basically, I want to take an image (say 1000px by 1000px) and divide it into a grid of equally sized squares (say a 10 by 10 grid) and then manipulate the squares individually (like turn one square black, flip another over, make another "fall" off the Frame pacing in OpenGL ES. x API calls with OpenGL ES 2. Here's the short version: SurfaceView has two parts, the Surface and a bit of fake stuff in the View. Since you're rendering with GLES, you can just use an FBO to render into a GL_TEXTURE_2D for your second pass. Right now there's no standard way for doing this I have an app that I've been repeatedly playing with in android, it uses opengl-es. 0, with TrueType/OpenType font files. OpenGL ES : Using Texture: Blank White instead of Texture Image. 8. The Surface gets passed directly to the surface compositor (SurfaceFlinger), so when you draw on it with OpenGL there's relatively little overhead. Render Compressed Textures on a Screen. getWidth(), There are two ways to draw images to the screen for a C or C++ game, namely with OpenGL ES, or Vulkan. With OpenGL ES 1. Saving video frame from GPU texture. You should never rely on relation between 3D HW vendor & particular texture compression support, instead of this you should check for supported texture compressions run-time (after OpenGL/ES initialization) by looking for extension sub string in string returned by glGetString(GL_EXTENSIONS), e. glBindTexture(GLES20. This code can be used as the first step in the So, what I can understand, I need to apply OpenGL shade to each frame and render in a SurfaceView. SurfaceTexture contains an instance of BufferQueue for which apps are the consumer. Specifically the last parameter of Android study notes. for more detail, I am just learning to work with OpenGL ES 2. . It is initialised with an OpenGL texture id, and performs all of it's rendering onto that texture. This will simply tell the OpenGL layer which pre-loaded texture it's going to be using for the up-coming draw call. decodeResource(Deflecticon. Stack Overflow. Is this recommended for OpenGL ES and OpenGL? I am personally not convinced by the approach but I am curious as to when this will have benefits, if any, in the setting of OpenGL on a desktop PC and with Me and my team are currently developping an Android app to do fast live and non-live image processing. One common use is for importing YUV video, so external samplers also have to be glIsTexture is not valid reply to this question. The basic idea is that I will play the video by MediaPlayer on Android, which provides a setSurface API receiving a SurfaceTexture as constructor parameter and in the end binds with an OpenGL-ES texture. glTexSubImage2D() is too slow for video frame rates. Footnote: once you've done that you can use the SurfaceTexture naively in your shaders by using an external sampler. 0 3d. There is also GL_IMG_texture_npot and GL_APPLE_texture_2D_limited_npot for iOS devices. Note: Be careful not to mix OpenGL ES 1. You signed out in another tab or window. My question is two-fold: Most of my textures require alphas. It seems that to display OpenGL outputs, the way to go would be a GLSurfaceView (cf. I am thinking of splitting This is a bit late but Non-power of 2 textures are supported under OpenGL ES 1/2 through extensions. 0 Texture Mapping Does Not Work. First create an external texture (same as creating a regular texture, but replacing all GLES20. OR The idea is that the SurfaceTexture gets a raw frame which I can use as an OES_external texture to sample from with OpenGL. 0 in real-time? It is well explained in the best answer given by the author, but I have a little different issue concerning YV12 instead of NV12. bind camera to the new surfacetexture, so camera will give frames to the surfacetexture 4. Place a TextView over your SurfaceView. android/opengles alpha textures not semitransparent but binary transparent. 2. I can then simply render this OpenGL texture to all outputs (1920x1080 Preview EGLSurface, 4000x2000 Video Recorder EGLSurface) using a simple pass-through shader. Graphics programming is definitely my weak spot, and my rustiness with OpenGL isn't helping, what so ever. Opengl es 2. I have no solution to this. I am using a TextureView. getResources(). drawing textures in opengl es 2. I have a large texture (say 1024x1024) that must updated with every frame. I don't want stretched image that are rendered on my GLSurfaceView. such as setting up shaders and loading textures. 5. I'm trying to capture video and display it to the screen by setting an Open GL ES texture to an android surfaceTexture. Texture not drawn using OpenGL ES 2. But in OpenGL in Android for video display, a comment notes that OpenGL isn't the best method for rendering video. 0. draw the frame in the oes texture to screen windowsurface. I'd like to debug a problem, so I want to use the most simple, complication-free solution. I've been reading a lot about textures in Open GL ES 2. How to Display Different images on each face of cube in opengl Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company one big texture should be better because loading and activating is slow because of the memory upload to the video memory. In my case I use it for progressive downloading of textures in 360 deg. The onFrameAvailable() callback notifies apps when the producer queues a new buffer. nio. I want to copy the texture data from this SurfaceTexture object to my custom OpenGL texture which is bound to GL_TEXTURE_2D. Let me try to Android: OpenGL ES2 Texture not working. Leaving you with the following options. Is it possible to map a texture to all faces of a OpenGL ES2 Android - Mapping 2D Textures to a GL_TRIANGLES cube. Get started Core areas; Get the samples and docs for the features you need. 4. Texture coordinates. Follow asked Jan 26, 2018 at 13:47. The live video stream is captured using the Open Source Computer Vision library (OpenCV). This is OpenGL ES 2. Loading more smaller textures vs. I do it by following step: 1 Deocded video frame(No blocking mode) to NvBuffer(With an fd of dma buffer), My decoder output_plane memory type is V4L2_MEMORY_USERPTR and capture_plane queue buffer 's memory type is Your question is a bit vague. Then, Yes, I know about glTexSubImage2D, but in this specific case I thought about changing of whole image of texture and even its metric. public int[] texture = new int[10]; public int loadTexture With the Java bindings in Android, the first argument is the number of ids you want to generate, the second an array of ids, the 3rd the start The trick to playing video with effects on Android is to use OpenGL for actual frame display and then use (API 11+) SurfaceTexture class to render video as a texture on screen. and of cause how to display buffer on openGL as texture - u can use something like -(void)displayPixelBuffer:(CVPixelBufferRef)pixelBuffer { CVReturn err For clarity purposes, im attaching a video that displays the problem, since its a little difficult to explain with words. Android: OpenGL ES 2. SurfaceTexture instances are used to provide surfaces that output to GLES textures. It seems the only way of creating the EGL context is by creating a SurfaceView (or another view that has a SurfaceTexture), and use it to initialise the EGLSurface and then make the I'm just getting started with OpenGL ES 2. 26. Textures are a core element of your 3D art. See the Media Player sample code that Dave was referring to in his sample. You can find an example of displaying a live camera feed on a GLES rect in Grafika's "texture from camera" Activity. genpfault. I setup webrtc on my android (peer to peer video chat). And on middle-step, which is cropping, I've got problems. GL_TEXTURE_EXTERNAL_OES). The source could be local as well as on the Internet. You don't have to use GLSurfaceView to do OpenGL rendering. I started wrong before and while using tilesets in TMX extension (doesn't really matter what it is, if you don't know AndEngine) I get to a tileset that makes a texture wider than 1024px. android ffmpeg opengl es render movie. However, the amount of VRAM does not determine how much textures will fit in it: these ones can be compressed, the amount of VRAM can change because of another app, and we don't know how much memory the video driver uses. You can use SurfaceTexture. I see two things that seems wrong to me. x, 0. In this tutorial, you are going to learn how to The trick to playing video with effects on Android is to use OpenGL for actual frame display and then use (API 11+) SurfaceTexture class to render video as a texture on screen. How play video on Surface(OpenGL) 4. SurfaceMediaSource could change or disappear in a future release and break your code. g "GL_EXT_texture_compression_s3tc" for S3TC, I'm using OpenGLES3. Currently I load textures from a bitmap like so: //Load up and flip the texture - then dispose the temp Bitmap temp = BitmapFactory. The main one is GL_OES_texture_npot. 0 and Android NDK. 0, which guarantees support for floating point textures but requires OES_color_buffer_half_float or OES_color_buffer_float for actually rendering to them. The EncodeAndMuxTest sample demonstrates recording OpenGL ES frames to a . I keep reading about GL_MAX_TEXTURE_SIZE and how I should keep my texures under 1024x1024. In my texture array noncommented texture elements must be correct combination according to opengl coordinate system but the image is drawn reversed vertically. Does anyone knows some convinient method to capture video to file or stream from OpenGL app on Android device? For example, can we capture video from a view, opengl view? can we capture video from a view, opengl view? you would need some sort of Texture Streaming support in the GL driver. I'm successfully generating my textures using GLUtils. 0 texture showing up black. 0 - Texture always black. This is TextureLoader,i think it correctly loads texture on idx position. Fig 2: Android Architecture with pre-processing and post-processing plugins . All you have to do there is to replace the SurfaceView with a GLSurfaceView in both the MediaPlayerDemo_Video. We are facing two problems: First, we would like to convert a Bitmap into a Texture to process the picture with OpenGL shaders, and then convert it back into a Bitmap. I suspect that the hardware acceleration does not work on surface texture. Renderer interface is a core element in OpenGL ES development for Android. This question is in I'm having a weird issue with my OpenGL/Skia Android Camera2 app. I quite understand the process in theory, but a lack of knowledge in native Android development is not letting me code this. my mistake actually, the surface texture is used for rendering video to a texture instead of a view, so that option wont be viable for you anyway. This is a problem of Android implementation of OpenGL. Use TextureView to transfer texture images between OpenGL ES and the Canvas API. I want to use ExoPlayer to progressively stream videos from urls, see what other approaches I used. This question is in a collective: a subcommunity defined by tags with relevant content and experts. I can't use a TextureView and implement This is a demo for using OpenGL to render video to a TextureView. The texture name that you bind before calling glTexImage2D - the one you generate with glGenTextures is I want to load more than one textures in OpenGL and use them. They even work between processes. android docs I'm rendering my camera preview in android on a SurfaceTexure. The purpose of SurfaceTexture is to take whatever is sent to its Surface and make it available as a GLES texture. I however want to render some 3D objects into dynamic sprites offscreen (to a texture), with transparent (possibly translucent) areas, and subsequently render those rendered textures to the active screen as 2D textured quads. a) Google TV (LG G2 2012 device) is an Android 3. 5 Composed video of rgb channels and alpha mask in gray levels Creating an OpenGL TextureView. I say 2D because the majority of the app will be 2D. Integrate; Update your build settings Sample, Codelab, Developer Stories and Videos; Tools & advanced features; Manage, debug, and profile in Android Studio Follow these best practices to optimize the appearance and performance of textures in your Android game. I am able to read the data from disk using an InputStream, and then convert the byte data to int to allow me to use the createBitmap method. versions. When rendering the scene, the objects change textures whenever there should be a new frame. About; Android. I'm currently making an Android player plugin for Unity. android; opengl-es; textures; or ask your own question. – The EGL image extensions are not as necessary on Android now that the new TextureView class has been added with Android 4. Pinned) get the address again with How to render a video frame from MediaPlayer or VideoView to SurfaceTexture or a OpenGL texture, in order to change the texture/fragment color via GLSL? (We need it for fancy GLES/GLSL video processing routines. You don't say what the source of your decoded video is, but so long as it can send its output to a Surface the whole Assuming you're generating a new texture with glGenTextures every time you call glTexImage2D, you are wasting memory, and leaking it if you don't keep track of all the textures you generate. If I use bitmaps from android ressource as texture all works fine, but if I'm using the downloaded png equivalents and load them from file system my texture is displayed only black. I am struggling to get the textures working. openRawResource(R. 1 Android OpenGL ES 2. attachToGLContext(int texName) to bind the external image to that texture name. render image while play the video using Opengl android? 8. How to draw opengl Cube in android. When I try to add an image asset to my project (with New > Image Asset) I'm getting the usual GUI, which will generate HDPI, XHDPI etc. see what other approaches I used. getResources(), resourceID); Bitmap bmp = Bitmap. android shaders glsl video-processing renderscript glsl-shaders customview textureview android-opengl gltextureview androidshader shaderview video-shader. after having checked several things I finally got the the conclusions that the problem comes from GLUtils. openGL ES 2. It describes the method I used for rendering high-quality dynamic text efficiently using OpenGL ES 1. I want to understand how opengl reads the image for texture mapping. view. all OpenGL resources (such as textures) that are * associated with that context will be automatically deleted. I am bothered with the texture quality. 19. It's a very simple example of using OpenGL ES 2. So I'm able to display 1 texture at a time but I have a problem with displaying more textures. The example code in this class uses the OpenGL ES 2. Without a strong DRM implementation, such as Widevine Level 1, many content providers don't allow rendering of their high-value content in the OpenGL ES environment, preventing important VR use cases such as watching DRM-protected content in I'm trying to convert from a video using FFmpeg to an OpenGL ES texture in jni, but all that I get is a black texture. If you didn’t read the previous one, you can start from here. 0 for Android in Java. 0 today. So my question was about glTexImage2D(), rather why it doesnt work on Android, bnut works fine in iOS. But in my case, I'm working off of a live streaming API so flipping the texture to capture the image may actually flip the image capture as well on the video stream. With this you can TextureView in Android is used to display content streams that can be an instance of a video or an OpenGL scene. I'm aware of a number of posts covering related topics, some being old or weird, and some I could not get to work. 1 and texture to draw bitmap to GLSurfaceView. OnFrameAvailableListener callback I'm new to OpenGL ES in android development. 0 showing black textures. I've gotten up to texture mapping and am having some trouble mapping to a cube. Build AI-powered Android apps with Gemini APIs and more. Android OpenGL|ES 2. Follow edited Jun 6, 2016 at 13:43. My Camera renders frames into a SurfaceTexture, which is a GL_TEXTURE_EXTERNAL_OES texture in OpenGL. Texture problem video. Any suggestions? android; opengl-es; Share. Curate this topic Add this topic to your repo your demo is not right. To do this, I want to use a recordable surface using: private static final int EGL_RECORDABLE_ANDROID = 0x3142; to create a new context. At any rate, as far as I understand it, any textures that you send to OpenGL via glTexImage are copied into a separate memory area. Here is a simple example using OpenGL ES 1. The program also shows how an OpenCV image can be converted into OpenGL texture. Android/OpenGles drawing 2 external texture each taking half of the screen. Of course you will need a texture object in each share group, but the textures can be backed by the same image. When trying to play YouTube video on webview rendered using the above hack, the video rectangle is black (however the sound can be heard). It also should use less energy and so enhances user experience ;-) Try it - and write a long running test to prove it. createBitmap(temp, 0, 0, temp. The Overflow Blog Breaking up is hard to do: Chunking in RAG applications. I am currently using Eclipse and the AVD emulator. Then I can call DrawFrame() from my EGLContext after setting my WindowSurface as A few digs later and I've discovered that it's a texturing issue. android; opengl-es; android-ndk; android-mediacodec; Share. Secure texture video playback sets the foundation for strong DRM implementation in the OpenGL ES environment. My first For newly used images - Create corresponding Bitmap - Create the OpenGL texture, followed by glFlush - Release the Bitmap // Rendering 5. I have attached the code below: GFXUtils: public class GFXUtils In my project, use v4l2 nvdec to decoded video frame from mp4, then copy decoded data to opengl texture. Duplicate a TextureView into another one. 52 The example in your question is converting video frames (sent to a Surface) to a texture, not texture to I'm targeting OpenGL ES 3. The trick is the "OpenGL ES texture" part, because the texture is associated with the EGL context, and the EGL context can only be active in one thread at a time. eglCreateContext, that returns a The only way I can come up with is to listen to the SurfaceTexture and when new frame comes you just redraw it on a GL_TEXTURE_2D target. 0? Load 7 more related questions Show fewer related questions I am working with AndEngine and OpenGL ES 2. Is using MediaCodec the accelerated standard in current Android? Can I use a resulting surface as input to OpenGL? what is the best choice for rendering video frames obtained from a decoder bundled into my app (FFmpeg, etc. ) Context. This is clearly not intended for textures. Transparent texture in OpenGL ES for Android. Improve this question. 1. According to the OES_EGL_image_external extension:. ) ? I would naturally tend to choose OpenGL as mentioned in Android Video Player Using NDK, OpenGL ES, and FFmpeg. Mobile Development Collective Join the discussion. 0 to create a simple 2D square. 0 and above, the two main functions are HardwareBuffer-based texture sharing and EGLSyncKHR-based cross-process synchronization. There is no way around this AFAIK - the content of the texture is essentially a video. I'm targeting OpenGL ES 3. 0 for Android: public Ball(GL10 gl, float radius) { ByteBuffer bb = ByteBuffer. The source could be local as well as on the Internet. The Android - TextureView - If you want to display a live video stream or any content stream such as video or an OpenGL scene, you can use TextureView provided by android in order to do that. But i can't find examples of how to do it Atm i found an example of how to paint the same texture on all the Context context) { //Get the texture from the Android resource directory InputStream is = context. texImage2D(GL10. Android OpenGL Transparency overlay. Drawing translucent textures in Android using OpenGL. My onFrameAvailable callback is as follows : @Override public void It's a very simple example of using OpenGL ES 2. When coming to the OpenGL ES field, things can get really complicated. Create an internal/regular texture to write to; Wrap a SurfaceTexture with the external texture. OpenGL- Render to texture- whole rendered scene. Android Video Player Using NDK, OpenGL ES, and FFmpeg. This may either be on the graphics hardware itself, or as part of the kernel video driver in kernel space. 0 APIs, which is the recommended API version to use with current Android devices. The problem is that the Android Java interface to OpenGL usings java. In my experience, when I wanted to draw the video as an OpenGL texture to my own geometry, I had to use the SurfaceTexture class approach with VLC android. Please help me in this regard. allocateDirect(40000); bb. Modified 8 years, 8 months ago. previewCallback, so you use onPreviewFrame same way as in regular surface). Update: Android 4. 0, uv. You signed in with another tab or window. You have only one shader, where you should have two : one for doing video texture rendering, and another for your bitmap layer rendering. Now, I wanted to record that filtered preview using MediaRecorder and I looked at the following sample to see how MediaRecorder is working with the Camera2 API ( I just added the OpenGL ES part ). Textures are being loaded okay, but they're not being rendered - not the usual black squares you often get with OpenGL when something goes wrong - nothing at all. For more information about versions of OpenGL ES, see the OpenGL developer guide. Samples Try Quick Guidesᵇᵉᵗᵃ User interfaces Background work All core areas ⤵️ Tools and workflow; Use the IDE to write and build your app, or create your own pipeline. 0); // during render to texture Note that when we draw this same texture to the screen during execution, the full screen is colored consistent with that shader. The model with texture can be optionally rotated and zoomed, but when magnifying it to a certain ratio, the texture began to distortion. Let’s take an example of video post processing. opengl es 2. 0 on Android platform. What you probably want to do is use a plain SurfaceView. My problem is, that they are all black. If the color of the video frame used as an external texture is non-linear, then the sampled color is also going to be non-linear. I have been trying to simply display a texture on the middle of the screen, which was easy enough, but I cannot seem to get the PNG alpha to work properly. 0 for Android. 0, what I'd like to do is create some simple 2D output. See GitHub for full app demo. With this function I can create a sphere in OpenGL ES 1. Convert image sequence to video file android java. 0 texture loading. The code you reference isn't a sample, but rather internal test code that exercises a non-public interface. Working through some OpenGL-ES tutorials, using the Android emulator. getEGL(). I'm trying to create a 360 video sphere (like the ones for cardboard) on Android. 1 Multiple objects with same texture. [My development environment is Java / Android, so examples directly relating to that would be best, but other languages would be fine. I was able to apply grayscale filter on the frames so that the preview was in grayscale. In the old Camera class, there was a method setPreviewTexture but I can't see anything similar in the CameraX class. GL_TEXTURE_2D, textureHandle[0]); // Set filtering GLES20. glTexImage2D takes the input data and stores it video card memory. opengl. External textures are defined and allocated elsewhere, and imported into OpenGL ES in some implementation-defined manner. SurfaceTexture is used when receiving frames from Camera or a video decoder because the source is usually YUV. The whole process is actually quite easy. Be sure to call this before each draw to ensure you draw the correct texture each time. This SurfaceTexture is bound to target GL_TEXTURE_EXTERNAL_OES. The other option is to use openGL ES. My code: To generate a texture from a bitmap: private void generateTexture(Bitmap bmp) { I have also seen this post that covers how to determine which texture compression formats are supported on a device and I understand this part of things: Android OpenGL Texture Compression. Actually, I'm rending a scene in a texture in my First context. In OpenGL, texture coordinates are sometimes referred to in coordinates (s, t) instead of (x, y). You implement the SurfaceTexture. getShaderInfoLog() and GLES20. This makes it fast, but it also makes it not play quite How to use TextureView with OpenGL in your Android project? Example written in Kotlin! :-) A very simple example is about how to initialize OpenGL context on Android. 6. To get started I am trying to use it to create some effects on a 2D image. Display ffmpeg frames on opgel texture. // Bind to the texture in OpenGL GLES20. In order to * keep rendering correctly, a renderer must recreate any lost resources * that it still needs. I know how opengl coordinate system is but there a confuse where is the 0,0 of the image. Getting black screen when added ExoPlayer into GLSurfaceView. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Android follows codec2 framework for video processing and our plugin can be integrated to the codec2 pipeline at the vendor space. I'm using Surface with Texture to process video with MediaCodec and MediaMuxer (decode, crop, encode with lower quality). However, creating an OpenGL texture (as in step 1 of the answer), requires an EGL context, which requires a EGLSurface to be made current, which requires a SurfaceTexture. Im actually working on a similar problem to you at the moment, except on iOS. In most other cases like showing an image, we can just send this texture in form of pointer/id to For our purposes here, my fragment shader for rendering to texture is a test of the coordinate mapping to the screen gl_FragColor = vec4(uv. One way that springs to mind is to draw the pixels of your frame into a texture and then render that texture using OpenGL. 0 on Android. the right way is that: 1、use the surfacetexture from textureView to create a screen windowsurface 2 . So the question is: Is there any way to play a youtube video on OpenGL texture? everything work fine but the video/camera image data's are stretched on landscape mood. EGLContext. The question has already been partially answered. I need to render to a depth texture in Android, and I'm having trouble figuring it out. I know the solution needs unity+exoplayer+opengl+android knowledge at the same time, Unity3d Render openGL FBO to texture in android (java) 0 If you want to do more complex stuff (like writing a string using a BitmapFont into a Texture for later manipulation, or writing it into a Pixmap and then uploading it to the video memory), then then tell me if you succeed (as I I've found a lot of questions related to inverted bitmaps taken from OpenGL texture - but most seem to refer to drawn images and rely on either: a)flipping the texture in OpenG. I'm trying to convert from a video using FFmpeg to an OpenGL ES texture in jni, but all that I get is a black texture. For each ETC2 compression format supported by OpenGL ES 3. java file as well as in the corresponding layout file (mediaplayer_2. The example written in Kotlin and contains about 80 lines of code (with context creation, etc). onSurfaceChanged: This method is called when the I have an application which is being ported from XNA to opengl. This view behaves as a regular view without creating a separate window and can only be used in a hardware-accelerated window. But when I It seems that you are trying to know the amout of VRAM (video RAM) available. Please, I need tutorials/code examples of how to fill each side of a cube with different textures on OpenGL ES 1. It uses TextureView for good integration with system. It does this by importing the movie and creating as many textures as it can, where each texture holds a frame. Hot Network Many examples use the resources infrastructure to load textures. I have done this with a photo by rendering a sphere in OpenGL ES1. 0 - Displaying multiple textures. Reload to refresh your session. loading few large textures in OpenGL Android. GL_TEXTURE_2D Anyway I'm using OpenGL ES 2. How to create offscreen Texture and use it on Android with OpenGL ES 2. It renders quicktime moves as textures which are overlaid on various objects. Using FFmpeg with Android-NDK. If you look at the source code, you can see that it's only using only publicly available APIs. This example shows a sphere divided in 200 sectors, each one with a different texture. drawable. mp4 file. y, 1. Updated Apr 3, 2023; Add a description, image, and links to the android-opengl topic page so that developers can more easily learn about it. glTexParameteri(GLES20. 3 (API 18) allows Surface input to MediaCodec. create an another surfacetexture with oes texture 3. The render function is called for every texture separately (tex_nr), not sure if that's a good approach. OpenGL ES is part of the Open Graphics Library (OpenGL®) specification intended for mobile devices such as Android. For that, I used the Camera2 API and OpenGL ES. My specific questions: My specific questions: What does calling setPreviewTexture() actually do in terms of what memory buffer the frames go to from the camera? This project is a demo for multi-process sharing of OpenGL textures on Android, based on HardwareBuffer, supporting Android 8. android openGL Es 2 showing no image. Buffer objects, not arrays. 3D I am using OpenGL|ES 2. Render the tile (using a textured quad) } To give a better idea of how the data is organised, here is an overview of the classes: Loading textures in an Android OpenGL ES App. When I draw texture that comes from the local camera, everything is fine, but when I try to draw texture that comes from the remote smartphone then I have a pink image, something like this : on webrtc i just do this to get the remote stream: I need this because i want to draw each frame of the video on a OpenGL texture android-mediaplayer; exoplayer; Share. i have ever tried to texture the 3d cube in android using opengl es according to the example in c++， but after several times ， the result is disappointed！ Android - How to renderer video texture on 3D cube with opengl-es? 1. I need this because i want to draw each frame of the video on a OpenGL texture Skip to main content. xml). Check for these extensions by calling glGetString(GL_EXTENSIONS) and searching for the extension you need. I also put some questions in the comments. SurfaceTexture is a combination of a surface and an OpenGL ES (GLES) texture. Texture only shows up as black. TextureView in Android is used to display content streams that can be an instance of a video or an OpenGL scene. So it's very simple You can try to convert data from YUV to RGB with native code and android NDK, but that's quite complicated. 0 Texturing. It has been suggested to me for Android and OpenGL ES that it might be a good idea to load and unload textures on the fly as needed to save memory. I'm trying to set the transparency of a texture on a quad in opengl, playing with the blend functions didn't help neither did anything on google. Alloc(screenData, GCHandleType. I loaded a Obj file to display 3-D model, and used a 2048 * 2048 2-D image for 3-D model's texture mapping in android using Opengl-ES. private static class BitmapRenderer implements GLSurfaceView. Playing video in a GLSurfaceView instead of SurfaceView. Putting the contexts in the same share group and using a regular texture is probably much This short program shows how a live video stream from a web cam (or from a video file) can be rendered in OpenGL as a texture. Ask Question Asked 8 years, 9 months ago. Android OpenGL ES 2. I want to read monochrome image data from disk in a binary format (unsigned byte) and display it as an OpenGL ES 2 texture in Android. GL_TEXTURE_2D with GLES11Ext. Drawing Video Frames in OpenGL on Android. You are trying to bind everything at the same time, and hope that one call to GLES20. 0. Hope that helps. The "external" texture format allows for a wider range of pixel formats, but constrains the uses of the texture. You switched accounts on another tab or window. Share. When you generate compressed textures, you can use them in the following steps. Without the scaling, I've been able to get about 40-50fps, but the texture just appears white, which does me no good. Sampling an external texture will return an RGBA vector in the same colorspace as the source image. Since android uses OpenGL ES I can't use glGetTexImage() to read the image data. The reason for binding the texture to that target is because in order get live camera feed on android a SurfaceTexture needs to be created from an OpenGL texture which is bound to GL_TEXTURE_EXTERNAL_OES. I want to decode a video stream and write the decoded frames to a FBO opengl texture or other memory representation that OpenGL can readily use to apply additional filters or transformation (through shaders) to it. I wrote a blog post a while back on how to go about this, primarily for In order to convert an external texture (non-GPU) to a regular internal one, you have to . getProgramInfoLog() are indeed wrapped, so try I want to use ExoPlayer to progressively stream videos from urls, but display the video in Unity3D. 0 and than attaching a texture to it. This is by far the simplest and fastest, but the least flexible. glDrawArrays() will draw everything. As you can see, sometimes it looks like it is trying to draw two different textures in the same sector at the same Since your terrain texture will probably be reusing some mosaic-like textures, and you need to know whether a pixel is present, or destroyed, then given you are using mosaic textures no larger than 256x256 you could definitely get away with an GL_RG16 internal format (where each component would be a texture coordinate that you would need to map from [0, It is fairly common for OpenGL to display black (or white) texture/screens when given wrong parameters I'm not sure if the Android API handles this via exceptions but you should always print the info log when compiling and linking shaders. rczv ovl cxfnrp siskyybh gxunu wmgtem jska njedb hiffi fvgt

Android opengl video texture. Texture problem video.