I am trying to save whatever is rendered on screen in a Open GL ES2 application, by not calling glClear on a renderbuffer or the framebuffer.
We have a hard time figuring out rendering to texture using framebuffer objects. We have managed to draw our texture unto another texture, but the texture isn\'t centered.
How can I efficiently开发者_开发知识库 create a CGImageRef from the EAGLView\'s framebuffer contents using glReadPixels?Perhaps I can \"render directly to a texture\"?
I\'m quite a bit confused about framebuffers. What I wan开发者_运维百科t to do is using a framebuffer with multiple textures attached, fill every texture and then use a shader to combine (blend) all t
My main scene is composed of GL_POINTS in 3D space.What I would like to do is be able to draw a single GL_LINES line (2d overlay) on top of the scene as the user moves his finger across the screen whi
I am doing some gpgpu开发者_JAVA技巧 calculations with GL and want to read my results from the framebuffer.
Presently I am trying to read the pixel data from the frame Buffer in order to capture the screen in IOS. GlreadPixels command works fine when using the following code to setup frame buffer :-
I call eglGetConfigAttrib with EGL_NATIVE_VISUAL_ID and it lists 0 for each开发者_运维问答 one.
What would be the fastest way to render characters in a framebuffer based console? I\'m using the iso_font.h font from the XNU distribution.
I am working on an OpenGL application on my laptop. My app shows lots of black and white unrecognizable patterns when I try to display a monochrome image (quite large). I have a hunch that it could be
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