Tagged Questions
4
votes
1answer
36 views
What OpenCL video cards (or FPGAs) features are needed for high speed multiplication?
I'm benchmarking some cryptographic related software and am looking for video cards that are better at parallel multiplication vs parallel addition.
Is there any prior work that would graph video ...
0
votes
0answers
38 views
Y Axis inverted on vertex output
I've got my project running and somehow it seems my vertex y components are inverted. 10 in the positive on Y goes down and 10 negative on the Y axis goes up.
I can't find anything with the ...
12
votes
1answer
108 views
Orthographic unit translation mismatch on grid (e.g. 64 pixels translates incorrectly)
I am looking for some insight into a small problem with unit translations on a grid.
Update and Solved
I solved my own issue. See below for details. Everything in this part of the post turned out to ...
2
votes
2answers
74 views
setting the position in different resolution
I have a normal game window which is 640*480, and everything is fine, but when I try to maximize the window, the objects translate to different positions on the screen, for example If I have a circle ...
2
votes
2answers
190 views
Quaternion based rotation and pivot position
I can't figure out how to perform matrix rotation using Quaternion while taking into account pivot position in OpenGL.What I am currently getting is rotation of the object around some point in the ...
1
vote
3answers
103 views
How to adjust position relative to resolutions?
I have a lot of objects on the screen and would like at different resolutions, object's positions rendered correctly on the screen irrespective of the resolution. Is it correct to multiply the ...
1
vote
2answers
101 views
Billboarding + aligning with velocity direction
I'm working on a particle system where I'm orientating the billboard using the inverted orientation matrix of my camera. This works quite well and my quad are rotated correctly towards the camera.
...
0
votes
2answers
410 views
OpenGL matrix vs DirectX matrix
I'm working on an animation and model exporter from Maya to use within my game. Currently, models work perfectly, and animations have some issues with the joints. Since Maya works in an OpenGL ...
1
vote
0answers
59 views
obb vs obb and resolve/response for 2d space game [closed]
Possible Duplicate:
OBB vs OBB Collision Detection
How can i detect if an rotated obb intersects another
rotated obb and resolve it so both obb objects dont go further into each other.
I ...
0
votes
1answer
224 views
rotate opengl mesh relative to camera
I have a cube in opengl. It's position is determined by multiplying it's specific model matrix, the view matrix, and the projection matrix and then passing that to the shader as per this tutorial ...
2
votes
2answers
263 views
Rotating an object smoothly
I'm trying to rotate a ship in an asteroid game. What I'm doing is creating a float angle variable and at each time I press left or right buttons, I increase and decrease it, and in the drawing ...
1
vote
2answers
175 views
Aligning bullet's position in Asteroid Game
I'm writing an asteroid game and I would like to align the bullets on the ship's tip. I also want when the ship fires, the bullet gets the same orientation(angle, direction) of the ship and also be ...
0
votes
2answers
220 views
Asteroids Ship Movement
I have read source code of asteroids game. I want to know why when updating the ship's position in X, and Y Axis, we must write it in sin and cosine of the current angle. Is it angular velocity ? why ...
1
vote
2answers
339 views
Rotating a polygon around it's center
I have drawn a ship using three lines, and would like to rotate the ship around its axis in opengl, I have tried the following, but the ship translates while rotation!.
void Ship::Draw( )
{
...
0
votes
1answer
104 views
Directional and orientation problem
I have drawn 5 tentacles which are shown in red. I have drew those tentacles on a 2D Circle, and positioned them on 5 vertices of the that circle. BTW, The circle is never be drawn, I have used it to ...
