Using Android, OpenGL ES 3.0 Attempting to write multiple layers of a GL_TEXTURE_2D_ARRAY using framebuffer objects to create heightmaps in sequence, ...

From question/answer i know that once I bind GL_PIXEL_UNPACK_BUFFER, OpenGL will feed texture2D using the data in buffer bind to GL_PIXEL_UNPACK_BUFFE ...

To create a buffer in OpenGL, we need to write following code down: I know that we can create a PBO in this way: my question is, can I create pb ...

I am creating a render texture in SFML (sf::RenderTexture for off-screen rendering), drawing to it and trying to read the pixels asynchronously using ...

I can't figure it out how to properly write and read from a QOpenGLBuffer:: PixelUnpackBuffer. What is the proper setup before writing into a PBO? ...

I want to return record of table from abap method, which is field of class but nothing is returned to the variable in PBO definition in class MS_Z ...

I plan to develop a tool for realtime video manipulation using C++, QT 4.7.4 and OpenGL and i'm on visual studio 2008. I check many web site but my co ...

I am reading a single pixel's depth from the framebuffer to implement picking. Originally my glReadPixels() was taking a very long time (5ms or so) an ...

I render into a texture via FBO. I want to copy the texture data into a PBO so I use glGetTexImage. I will use glMapBuffer on this PBO but only in the ...

I was trying to implement a color picking system by using a PBO(pixel buffer object using OpenGL), and when I finished, I realized the numbers that ca ...

This article is commonly referenced when anyone asks about video streaming textures in OpenGL. It says: To maximize the streaming transfer perfor ...

I'm developing camera preview app with android. My App Flow is like below. 1) JAVA : Grab the camera preview buffer and pass it to JNI 2) CPP : Make ...

Recently I looked into improving texture submissions for streaming and whatnot and despite my long searches I have not found any material presenting o ...

I have read the famous tutorial OpenGL Pixel Buffer Object (PBO). I tested the sample code on my computer and it works (although with PBO on, its perf ...

I want to take screenshot of current frame in OpenGL for further processing and I'm trying to improve the performance of glReadPixels by using PBO to ...

I want to use pbo to save image, rather than use cpu. So I didn`t use bytebuff in glreadpixels, and use GLES30.glReadPixels(0, 0, getWidth(), getHeigh ...

I am new to OpenGL and have currently copying the contents of a 2D texture back to CPU memory as follows: I noticed this is quite sluggish and I st ...

I want to improve glReadPixels() performance using PBO(for Android 4.3+), As glReadPixels takes about 30~50ms(1280*960) for each frame in my test devi ...

I'm using LWJGL in Java, which has identical function names to the C++ OpenGL. Note that I'm forced to use OpenGL's "old" Fixed Function Pipeline. I' ...

I saw format specifies the format of the returned pixel values; accepted values are: GL_ALPHA GL_RGB GL_RGBA RGBA color components are read fro ...