Tagged Questions
0
votes
0answers
20 views
Android - OpenGL ES 2 - Cube with different texture in each side
I need to create a 3d cube, with a different texture on each side.
Here is my cube class, which my other classes extend:
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import ...
0
votes
1answer
79 views
Re-using one texture for multiple OpenGL Quads
I've been looking over my code and I'm just wondering, when I set a texture for say, 20 quads that need to use the same texture, it seems as though I'm creating a new texture each time...... surely ...
0
votes
2answers
33 views
How to obtain the currently bound texture ID in an openGL ES 2.0 project
In my game, I have:
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texID);
Where texID is an integer returned by my setTexture() method. Let's say, in this instance it's 1.
When I bind my textures ...
0
votes
0answers
26 views
Deleteing Textures in Android OpenGL ES 2.0
I'm confused about how to delete a previously applied texture.
So, I've applied my texture and am happily rendering it.
I decide I want to delete the texture, so this is what I've tried......
void ...
0
votes
1answer
99 views
OpenGL ES 2 jittery camera movement
First of all, I am aware that there's no camera in OpenGL (ES 2), but from my understanding proper manipulation of the projection matrix can simulate the concept of a camera.
What I'm trying to do ...
0
votes
0answers
91 views
Moving objects smoothly, bad perfomance
I just finished developing my mini-game on Android and I got some questions about perfomance and generally "how to": If I have 25+ objects on the creeen (just a polygon with 7-8 angles) its starts to ...
1
vote
0answers
144 views
Android and OpenGL, single thread vs double thread
I'm trying to optimize my Android OpenGL ES 2.0 application, and I find myself being CPU bound.
After googling, I've found this, which suggest to use a thread for updating objects, and a thread for ...
1
vote
1answer
180 views
How should I implement a Game Over menu in Android?
By Game Over menu, I mean a menu displayed when you die, with an option to play again.
I have two approaches in mind:
Use OpenGL
Have some button textures ready. When the character dies, draw ...
1
vote
2answers
136 views
Circular dependency when creating entities
I have the following problem:
I have a a class called Stage, that keeps an list of entities, which it iterates over every update loop, and updates them.
One of these entities might be a weapon (PEW ...
5
votes
3answers
322 views
How do I send multiple matrices to a vertex shader?
I'm practising animations using bones/skinning. I am trying to send the shader one matrix per vertex. I can think of these two approaches.
Method 1
I have one uniform handle for each bone matrix ...
0
votes
1answer
243 views
libgdx game process dies on loading texture atlases
I try to load a lot of texture atlases (10) with approximately 5 (~2048x~2048)(not using PoT) .pngs each. I'm using AssetManager and there is no trouble with it on my pc but when I try it on my tablet ...
1
vote
2answers
373 views
How to flip a quad (openGL es 2.0 Android / Java)
bHow would one go about 'flipping' a quad i.e., either horizontally or vertically? (Just a single quad, not everything in view).
I know how to rotate a quad, this is my rotation method:
public void ...
-1
votes
1answer
246 views
How can one make multiple movable images in OpenGL ES 2.0? [closed]
I was wondering, I've only seen examples of OpenGL ES 2.0 where people have used one or perhaps two images. I didn't see multiple images of where they each had independent movement.
What if someone ...
0
votes
1answer
403 views
Get back or delete an existing OpenGL object, then change it and draw at new. How?
With OpenGL i'm drawing for example a circle.
Can i take this drawn circle back out of the window and change something and then draw it back on the window?
Or can i /have to delete it and then draw ...
7
votes
2answers
572 views
What's the best way to draw lots of trees
I'm writing an app which renders a random island planted with trees. The trees are currently two quads, criss-crossed and drawn with textures. I plan to have more complex meshes that form different ...
3
votes
1answer
200 views
Cut a translucent square in a texture
How to remove (cut-out) a transparent rectangle in a Texture, so that the hole will be translucent.
On Android I would use the Xfermodes approach:
...
2
votes
1answer
2k views
Best practice to use Sprites in a game using AndEngine GLES2
Currently I am having static reference to all my sprites and loading and initializing them in my OnCreateResource mthod of SimpleBaseGameActivity, But now I have to override onAreaTouched listener on ...
2
votes
2answers
642 views
Horizontal wrapping with AndEngine
How would one implement the effect of a sprite disappearing on one side of the screen and appearing on the other using AndEngine? Like in Kid Icarus, seen here at around 1:22.
1
vote
3answers
1k views
How can I draw crisp per-pixel images with OpenGL ES on Android?
I have made many Android applications and games in Java before, however I am very new to OpenGL ES. Using guides online, I have made simple things in OpenGL ES, including a simple triangle and a cube.
...
3
votes
2answers
1k views
What is causing these visual artifacts on my OpenGL sprites?
What could be the cause of the defects in my characters sprite? I am using OpenGL ES 2.0. I draw my sprites in a sprite batch that uses UV coordinates from one large texture atlas. If you look around ...