Tagged Questions
2
votes
3answers
268 views
Should I use Game Engines to learn to make 3D games?
HI i am a software engineering student in his second-last year.
I am proficient with C,C++,C# and java programming languages, and being a student of engineering I have studied calculus, vectors etc ...
1
vote
1answer
150 views
How can I create an orthographic display that handles different screen dimensions?
I'm trying to create an iPad/iPhone game using GLES2.0 that contains a 3D scene with a heads-up-display/GUI overlaid on the top. However, this problem would also apply if I were to port my game to a ...
2
votes
3answers
410 views
Draw contour around object in Opengl
I need to draw contour around 2d objects in 3d space. I tried drawing lines around object(+points to fill the gap), but due to line width, some part of it(~50%) was covering object. I tried to use ...
0
votes
3answers
208 views
Having a hard time finding a graphic engine programmer
I'm looking for a graphic engine programmer that knows both OpenGL and software rendering code to hire for a very short period (2 days). It's urgent and I'm willing to pay a very high amount of money. ...
5
votes
2answers
234 views
OpenGL 2 and back vs 3 and forward: What are the key differences for 2D graphics?
OpenGL contexts before and after OpenGL 3.0 are rather different. So far I've really only worked with buffers on either side anyway, I do know the most notable difference is lack of Immediate Mode.
...
1
vote
3answers
198 views
How to find the bottleneck of the graphical pipeline
I've been wondering about this issue for a while. How to find the bottleneck of the graphical pipeline. Recently I've been using a program to draw massive amount of polygons in a simple scene with ...
1
vote
1answer
742 views
OpenGL 3D Camera
And here I am again, looking for help with my OpenGL camera once again. This is starting to get embarrassing. Anyway, here's the deal: I think my OpenGL First Person free roaming camera is starting ...
12
votes
4answers
1k views
Real time shadow casting in a 2D isometric game
I'm writing a small 2d isometric engine in C++ and I'm trying to implement real time shadow casting. I followed a simple approach described on this page and here is the result (light is located at the ...
6
votes
1answer
599 views
Rendering 2D grass
My current project, using Java and OpenGL, has a fairly standard overhead tilemap in the style of the Zelda games.
I'd really like to add "real" grass to the grass tiles so that there are actually ...
2
votes
2answers
2k views
OpenGL ES 2.0: Vertex and Fragment Shader for 2D with Transparency
Could I knindly ask for correct examples of OpenGL ES 2.0 Vertex and Fragment shader for displaying 2D textured sprites with transparency?
I have fairly simple shaders that display textured polygon ...
2
votes
2answers
531 views
OpenGL ES 2.0: Picking Individual Polygon Sprites from within VBO
Say, I send 10 polygon pairs (one polygon pair == one 2d sprite == one rectangle == two triangles) into OpenGL ES 2.0 VBO. The 10 polygon pairs represent one animated 2D object consisting of 10 ...
4
votes
2answers
903 views
OpenGL ES 2.0: Using VBOs?
OpenGL VBOs (vertex buffer objects) have been developed to improve performance of OpenGL (OpenGL ES 2.0 in my case). The logic is that with the help of VBOs, the data does not need to be copied from ...
3
votes
3answers
1k views
Complete Math Library for use in OpenGL ES 2.0 Game?
Are you aware of a complete (or almost complete) cross platform math library for use in OpenGL ES 2.0 games?
The library should contain:
Matrix2x2, Matrix 3x3, Matrix4x4 classes
Quaternions
...
4
votes
3answers
2k views
Vertex Array Object (OpenGL)
I've just started out with OpenGL I still haven't really understood what Vertex Array Objects are and how they can be employed.
If Vertex Buffer Object are used to store vertex data (such as their ...
5
votes
2answers
399 views
OpenGL or OpenGL ES
What should I learn? OpenGL 4.1 or OpenGL ES 2.0?
I will be developing desktop applications using Qt but I may start developing mobile applications in a few months, too. I don't know anything about ...
