All Questions
Tagged with framebuffer ios
44
questions
0
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answers
264
views
iOS OpenglES 3.0 rendering to texture fails with depth attachment
Rendering into texture in my mobile app works fine when the rendertarget texture has no depth attachment. When I add a depth attachment, it stops working on iOS. Apparently can't switch back to the ...
0
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551
views
Xcode OpenGL ES: Framebuffer is not complete
I am trying to render an image to a texture in OpenGL ES to implement off-screen Sobel filter. Following this link http://www.songho.ca/opengl/gl_fbo.html, I create a resulting texture named ...
- 79
9
votes
1
answer
1k
views
How to restore a GL_RENDERBUFFER?
I am working on storing and restoring my OpenGL ES based application's state.
I have a function to save the GL_RENDERBUFFER to dump the data with the following code:
glBindFramebuffer(GL_FRAMEBUFFER,...
- 6,518
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1
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594
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libGDX: FrameBuffer size limit == max texture size?
I want to render my libGDX-game to a buffer and then render the content of the buffer to the screen.
For that I plan to use the FrameBuffer. The buffer dimensions suppose to be equal to the size of a ...
- 1
0
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1
answer
1k
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OpenGL ES 2.0 Framebuffer with render to texture iOS: nothing shown
I'm using a Framebuffer to do post processing.
Creating and drawing to the buffer (tested via glReadPixels and glCheckFramebufferStatus) is working fine.
But now I want to render the this texture with ...
- 893
4
votes
1
answer
115
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How can I track a point on a texture in OpenGL ES1?
In my iOS application I have a texture applied to a sphere rendered in OpenGLES1. The sphere can be rotated by the user. How can I track where a given point on the texture is in 2D space at any given ...
- 2,652
0
votes
1
answer
206
views
LibGDX FrameBuffer quirk on iOS
I've got dynamic textures for a word game that I create and keep on a FrameBuffer. I then use TextureRegions backed by that FrameBuffer to draw to the screen. This code works fine on Android, but I'm ...
- 4,584
1
vote
1
answer
266
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How to adapt the old OpenGL ES 1 setup to iPhone 6 Plus?
If I'm not the last man on earth using the very 1st version of OpenGL ES: has anyone dealt with adapting the resizeFromLayer function to the new 3x scaling on iPhone 6 Plus?
The code below works ...
- 261
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146
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Attaching a texture for the depth buffer
When I uncomment this line:
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _depthMapTexture, 0);
I get error 0x8cd6 (incomplete framebuffer).
My texture is:
...
- 5,207
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votes
0
answers
65
views
Minimal configuration for rendering to texture on iOS
My code:
// setup framebuffer
glGenFramebuffers(1, &_internalFramebuffer);
glBindFramebuffer(GL_FRAMEBUFFER, _internalFramebuffer);
// reference texture
glGenTextures(1, &...
- 5,207
0
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1
answer
2k
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OpenGL ES 2.0 rendering to multiple textures
I am building an iPad app using OpenGL ES 2.0. What I need to do is render to multiple textures and then render all the textures to view. I draw using GL_POINTS based on the user touch location. My ...
- 317
1
vote
2
answers
976
views
Open GL ES 2.0 renderbufferStorage returns false
I'm trying to create a Framebuffer to display a 3D model in my iOS app but when the framebuffer is created, the renderbufferStorage is returning false. My code is based on GLCameraRipple sample code.
...
- 75
1
vote
1
answer
2k
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Rendering "layers" in OpenGL ES
I'm making an iOS app and I want to be able to render with individual "layers" so that I can do blending between them and use shaders on each individually before blending them all together and ...
- 447
0
votes
1
answer
217
views
Rendering from to a texture from an FBO causes blurring
I'm trying to create a Photo editing program using OpenGL ES2 on iOS. I want to be able to modify parts of a photo using the fragment shader. For example, if the user touches the screen that point ...
- 3,305
0
votes
1
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707
views
opengles: how to copy existing fbo's colorattachment(renderbuffer) to another fbo's colorattachment(texture2D)
Platform is iPhone OpenGL ES 2.0
the framework already create an main fbo with renderbuffer as it's colorattachment.
And I have my own fbo with texture2D as colorattachment.
I want to copy main fbo'...
- 1