The quality, efficiency, and speed of running gameplay as a result of several factors in the design and structure of the game and its architecture.
0
votes
1answer
46 views
Checkers Game Board: Object references or char values?
just a general question regarding a checkers project. I built a class hierarchy for the game pieces (that could be extended for chess etc). The hierarchy looks something like
interface GamePiece() ...
-1
votes
0answers
25 views
OpenGLES 2.0, handling multiple model matrix with interleaved vertex buffer
I have 100 different object, and vertices for those objects stored in one vertex buffer.
My question is if each object has different Model Matrix (so they are moving or rotating differently), then ...
1
vote
3answers
47 views
Entity System Texture Rendering Performance Java
I use Artemis and LibGDX.
I have the following two components which manipulate a texture:
ComponentTexture // Stores the texture
ComponentSource // Define a region for the texture, that will only be
...
5
votes
2answers
125 views
Fixed Function vs Programmable Pipeline performance with many batches
In OpenGL 2.0 I can easily make 10,000 draw calls per frame (with state changes in between each call). However, if i try to do this in either OpenGL ES 2.0 or DirectX9 with shaders, my peformance is ...
1
vote
1answer
39 views
Will function-local objects affect my performance over time?
This is a very simple question.
Let's say my render loop runs at 60Hz, in each call to render(), I draw all my game's buildings, characters and scenery to make the current frame ready. Each of these ...
1
vote
1answer
56 views
iOS: OpenGL ES 2.0 render texture with glScissor performance
I have drawn image with OpenGL and will redraw tile of its texture (non filled area).
Which case will work faster?
Set glViewport with full texture's rect, draw full texture and use glScissor ...
1
vote
2answers
68 views
Improving performance of perlin/simplex noise calculations
I'm using perlin noise to calculate different values for 3d block-world terrain. I calc roughly six (at most) noise values for various terrain features for every 4 blocks in a chunk. The missing ...
0
votes
1answer
16 views
Check every body's position and delete or not (box2d performance specific)
I have a simple game with a platform (a ground that's not infinitely long). During the game I have about 10-30 balls on average that'll fall off the platform. There's gravity so I think they'll keep ...
2
votes
2answers
84 views
Vertex buffers - interleaved or separate? [closed]
Interleaved - all vertex data (position, normal, texcoord...) kept in 1 vertex buffer, separate - each vertex attribute is kept in a separate vertex buffer (1 for positions, 1 for normals...).
I know ...
0
votes
1answer
45 views
XNA DepthBias increases performance even when EarlyZ is turned off. Why?
My 3d scene consists of three main polygons:
The first and the second polygons overlap each other (have the same World matrix and use the same geometry), the third one is perpendicular to the first ...
1
vote
0answers
146 views
Monogame is not using GPU?
I have the following code in Draw loop:
for (int i = 0; i < 512; i++)
{
for (int j = 0; j < 512; j++)
{
spriteBatch.Draw(Textures.Grass, ...
1
vote
3answers
149 views
Is it possible to gain performance by omitting vertex normals in the GPU pipe?
I am working on a rendering problem where I want to render as many raw triangles to the screen as I can with either OpenGL or DirectX with the absolute fastest performance possible.
I wondered about ...
0
votes
2answers
85 views
Batching elements
I don't understand exactly how batching works.
What I have understood: Batching is useful to regroup similar elements together and draw them in one draw call (performance++), currently drawing an ...
1
vote
2answers
118 views
Input of mouseclick not always registered in XNA Update method
I have a problem that not all inputs of my mouse events seem to be registered.
The update logic is checking a 2 dimensional array of 10x10 .
It's logic for a jewel matching game.
So when i switch my ...
5
votes
1answer
245 views
Implementing algorithms via compute shaders vs. pipeline shaders
With the availability of compute shaders for both DirectX and OpenGL it's now possible to implement many algorithms without going through the rasterization pipeline and instead use general purpose ...
1
vote
0answers
60 views
Different ways to pass Textures into HLSL shaders
The GraphicsDevice class of xna 4 has the properties Textures and VertexTextures.
What is the exact difference? I don't really understand what MSDN tells me about this.
I usually use Effect ...
0
votes
1answer
64 views
Timing Calculations for Opengl ES 2.0 draw calls
I am drawing a cube in OpenGL ES 2.0 in Linux.
I am calculating the time taken for each frame using below function
#define NANO 1000000000
#define NANO_TO_MICRO(x) ((x)/1000)
uint64_t getTick()
{
...
8
votes
1answer
240 views
Fast lighting with multiple lights
How can I implement fast lighting with multiple lights?
I don't want to restrain the player, he can place an unlimited number and possibly overlapping (point) lights into the level.
The problem is ...
2
votes
1answer
141 views
Why is there high performance hit with many meshes?
I am currently reading upon Geometry Instancing, as I want to render a lot of animatable objects on the screen.
However I have come to a more fundamental question first: Why do I even need to use it?
...
0
votes
1answer
138 views
Directional light causes an FPS drop
I have only one object in the scene and it is lit with a directional light. It uses the mobile/diffuse shader. The issue is that on iPhone 4 the FPS drops from ~42FPS to ~11FPS when the directional ...
2
votes
2answers
149 views
Poor mobile performance when running from Eclipse
So after weeks of thinking my rendering code was bad, I accidentally discovered the following:
Running my game on a Nexus S
From Eclipse (Debug as -> Android application): 12fps
From the device
...
4
votes
1answer
99 views
Multiple render targets: Output target format performance questions
This is probably API independent (more dependent on hardware implementation), but just in case, I'm using OpenGL.
The question is restricted to PC hardware.
I have a couple of questions concerning ...
0
votes
0answers
77 views
Rendering tile maps for mobile devices
Hitting a bit of a roadblock with my game's development and I'm just looking for some outside advice.
I'm trying to render a tilemap for my mobile game (Android) and I'm using LibGDX.
Now, here's ...
3
votes
1answer
143 views
Controlling Constantly Running AIs
So, I'm not really sure where to start with this question. Feel free to tell me I'm stupid and Off Topic but I'd also like you to tell me why.
So, the maps in the game I am designing will consist of ...
3
votes
2answers
458 views
Small, High-Speed Object Collisions: Avoiding Tunneling
EDIT/UPDATE: My biggest question right now is whether step 3's "t=..." equation is a good idea or there a better way to do it. Most other issues have been partially or fully addressed, but no ...
-1
votes
1answer
118 views
Game Engine Design for the LWJGL [closed]
I'm about to begin on the engine for the game I am making. However, I am quite uncertain how I should design it. I have heard lots about threaded games, component and asynchronous systems. I'm ...
0
votes
4answers
229 views
HTML5 Jump and Run Game Performance issues
we're developing a HTML5/Javascript jump and run game and therefore we have developed our own gameframework.
It consists of following most important structures:
Stage/Scene/Layer: divs
...
-1
votes
1answer
54 views
Creating and drawing models efficiently
As I am learning the basics of game programming (in xna), I want to start creating simple 3d models and draw them (I'm already able to draw, control and animate them).
I want to create the following: ...
3
votes
1answer
212 views
Javascript tile map -> bitmap or JSON
I would like to know which idea is better in terms of performance.
The map is 5000x5000 tiles and I plan to expand it even more. It is split into 50x50 regions and camera doesn't move with player, ...
2
votes
1answer
189 views
Alpha Blending performance on IOS
I've got few questions without responses about my game development, can you help me? Here is the questions:
In my game when a large object appear on the screen, the GPU go to his limits, my ...
1
vote
3answers
221 views
Ways to make my game world bigger without slowing users CPU
I've been developing my first game for a little while now, but I've found that I want to make the game world MUCH bigger. It's currently about 300*300 tiles, but has creatures and bad guys running ...
2
votes
2answers
185 views
Confusion about systems implementation of ECS
For reference I am mostly imitating the architecture in this tutorial, the "Entity System" section: http://www.raywenderlich.com/24878/introduction-to-component-based-architecture-in-games
NOTE: the ...
1
vote
2answers
162 views
OpenGL ES - DrawCalls count - bottleneck?
I am newbie to OpenGL ES (so far, I used mainly DX11). Now for my scene, I have about 100 draw calls. I can use instancing, but only about half of objects can be instanced, so draw calls count would ...
-1
votes
1answer
109 views
OpenGL: How to map textures to geometry without using filter parameters
following my another question I have studied in the documentations that I should use this procedure :
Define the texture filter parameters. This will control what happens when a texture is scaled ...
1
vote
1answer
144 views
Batching and performances
I'm trying to understand batching and I'm not sure to understand how to do that, can I have more informations please? Here is what I found for the moment:
Batching informations
There is many types ...
4
votes
1answer
180 views
What is faster — full size with AA or reduced to screen size with no AA?
I wonder what is less expensive resource-wise:
Drawing a usual modern 3D game scene with some geometry at 100% scale, with some AA;
Drawing a downscaled scene (to fit the screen, but originally a ...
1
vote
1answer
68 views
Locating point on a closed path to maximize sum of distances to a sample of weighted points
I'm doing AI for a simple puzzled game and need to solve the following problem efficiently (less than 1 sec for the range specified since I need to do many iterations in a game).
A sample of N (1 ...
5
votes
2answers
405 views
How do collision meshes work in games like Zelda on the N64?
I was recently reading about the technology of Ocarina of Time/Majoras Mask and discovered that world collision is done using a single triangle mesh (vertices, normals, etc) for an entire area. There ...
-2
votes
1answer
135 views
Optimization Question about Singleton [closed]
I am using Unity with c#.
I have two objects and one needs to call a function from the other which is a Singleton. For this I have two solutions. But what's the best thing to do :
- Call for :
...
3
votes
2answers
148 views
Reducing overdraw cost: does triangle ordering matter?
I'm working on a project with procedural geometry, and will potentially have lots of opaque faces overlapping within the same model. Imagine an onion's layers. My understanding is it is better to draw ...
3
votes
2answers
326 views
How to implement an event system
Im trying to implement an Event System for a game, where there are classes that can fire or handle an event wheter or not they implement these interfaces:
public interface IGameEvent<T> where T ...
0
votes
3answers
55 views
Blender and the smoothing effect
I just started using blender again and I'd like to know if smoothing your model out adds a performance hit to your game?
By smoothing I mean when you hit ctrl+X (number from 1-9). The number of ...
2
votes
3answers
141 views
Is creating vertex/index buffer optimized this way?
I have some vertices in an array from which I create a vertex buffer. Let's say I have vertices:
v1, v2, v3, v4
I use indices:
0, 1, 2, 3
Is there any performance impact if I change the indices ...
1
vote
1answer
370 views
Voxel Performance
So Im trying to make a minecraft style voxel game to learn OpenGL, but Im running into performance issues. I found this thread :
http://stackoverflow.com/questions/4995652/3d-occlusion-culling
where ...
8
votes
3answers
555 views
Grouping entities of the same component template to linear containers
EDIT: Looks like people are actually doing this!
http://www.randygaul.net/2013/05/20/component-based-engine-design/
Another example of using this data accesing pattern.
I've done a lot of research ...
7
votes
3answers
1k views
Voxel Face Crawling (Mesh simplification, possibly using greedy)
Edit: This is just for my own learning experience, it is NOT for performance reasons that I ask this question.
This is in regards to a Minecraft-like terrain engine. I store blocks in chunks ...
1
vote
1answer
105 views
Determining explosion radius damage - Circle to Rectangle 2D
One of the Cocos2D games I am working on has circular explosion effects. These explosion effects need to deal a percentage of their set maximum damage to all game characters (represented by ...
3
votes
2answers
135 views
Spritesheet filesize gets huge after compiling
I have a 14x2 spritesheet which has 125 Kb in raw .png.
But as soon as I compile that to .xnb, it mutates to 4 MB.
So my question is: Why is that? And how can I fix that?
6
votes
1answer
179 views
Best way to determine surface normal for a group of pixels?
One of my current endeavors is creating a 2D destructible terrain engine for iOS Cocos2D (See https://github.com/crebstar/PWNDestructibleTerrain ). It is in an infant stages no doubt, but I have made ...
3
votes
2answers
220 views
What would be the most simple following target and neighbors avoidance algorithm in 2D space on plane?
I have ~20 or more enemies and they need to follow a target and avoid to go on top of themselves. I mean follow a target and avoid to collide with each other. Area, on which they are walking, is just ...
