A physical point in an image or the smallest addressable element in a display device.

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0
votes
2answers
124 views

How big should my tiles be for tilemaps?

I'm creating my first tilemaps. Tutorials usually do 32x32px (example), but this tutorial did 128x128px, which made it easier for me to see without zooming in so much. In tiled, I did a 40 x 40 tile ...
0
votes
0answers
112 views

MonoGame: Can't compile effect

I'm having trouble compiling a very simple pixel shader using the content pipeline in MonoGame 3.2. Whenever I compile the shader using "ps_3_0" it works but when I try to load it using the ...
0
votes
1answer
57 views

Which gaming engine can be used for pixel manipulation? [closed]

Here is the gist of where I am going with this. I work for a printer company and basically all of our input files(or output files for virtual printers) are bitmap files. We currently have a tool built ...
7
votes
2answers
535 views

Java single Array best choice for accessing pixels for manipulation?

I am just watching this tutorial https://www.youtube.com/watch?v=HwUnMy_pR6A and the guy (who seems to be pretty competent) is using a single array to store and access the pixels of his to-be-rendered ...
2
votes
1answer
109 views

How to smooth the model/texture look from a distance?

(First of all, I really didn't know how to title my question so it tells exactly what I mean so if anyone has a better title feel free to edit my question or leave a comment.) Look at the water in ...
0
votes
1answer
251 views

How do I implement pixel-exact collision server-side?

Recently I made a 2D offline game with HTML5 Canvas and JavaScript. I'm detecting collisions by first checking whether image bounding boxes overlap. If they do, I check against the bounding boxes, ...
0
votes
1answer
494 views

Adding Screenshots Specifically For 4-inch, 7-inch, and 10-inch Screen

My boss invited me and assigned me now as publisher for the app in Google Play. I have a 7-inch Google Nexus 7 tablet to take screenshot of any one of my sample projects I've made and post and upload ...
0
votes
1answer
251 views

Drawing UI using density pixels

I have a question about proper ways to draw UI, since I've learned what I know from the internet and by experimenting I often dont code the "proper" way, instead I do it my own way, not knowing if it ...
2
votes
1answer
156 views

Getting the rightmost point of gameobject

How do i determin the point on a gameobject that is most to the right (highest x value).
1
vote
2answers
690 views

How can I rotate a bitmap without D3D or OpenGL?

I've just figured out on my own how to scale a portion of a bitmap using PutPixel. I would like to know the mathematical theory behind rotating a bitmap on my own, using per-pixel operations like ...
2
votes
1answer
207 views

How does the Direct3D 9 rasterizer determine triangle coverage?

I'm working on a software rasterizer to use in my project. I have implemented one that works well, however, often my rasterizer under or over estimates triangle coverage. I need perfect emulation of ...
1
vote
2answers
179 views

How to draw a rotated pixel perfect line by hand?

If you have a pixel perfect line like 1:16 pixels, and you want to draw that same line rotated by a degree, for example 45°, what would be the correct way to do that by hand? I know it should have ...
11
votes
1answer
7k views

Can Unity 2D be used to make pixel-art games?

I'm looking at the new 2D features introduced in Unity 4.3, and I think I might be missing something. To me it looks like they are designed for high-res 2D games, where scaling the sprites is ok, but ...
4
votes
4answers
5k views

How do I scale up pixel art without blur in GM Studio?

I'm creating a game in Game Maker Studio that uses pixel art. When I launch the game, all scaled-up textures are really blurry. (It doesn't happen to small ones.) For example, this image renders ...
1
vote
2answers
310 views

RGB values from image into a one dimension array in c# [closed]

I was wondering if there is a was a way to read rgb values from an image into a one dimensional array in C#. If it doesnt make sense, in java I would do something like this. int[] pixels; ...
1
vote
2answers
141 views

Easy Method to Change Color on UI Elements

This isn't a language-specific thing as far as I'm concerned. I was wondering what may be a quick way to change the COLOR of a certain on-screen element such as a button and its associated text. I ...
2
votes
1answer
803 views

How do I access the pixels of an SDL 2 texture?

How exactly can one get to the RGBA pixel arrays of SDL 2.0 textures? Does the texture need to be specially initialized and locked down?
2
votes
1answer
94 views

Expandable player boundaries

I'm trying to plan how to implement non-fixed boundaries so the player can expand their controlled territory without using a tiled based system. Each pixel can be fought over for who controls it. I ...
4
votes
1answer
237 views

Drawing different per-pixel data on the screen

I want to draw different per-pixel data on the screen, where each pixel has a specific value according to my needs. An example may be a random noise pattern where each pixel is randomly generated. ...
5
votes
1answer
2k views

GLSL Light (Attenuation, Color and intensity) formula

I'm implementing point lights in my Voxel engine, and I'm really struggling to get a good flow of light, from 100% near the light source to 0% at the light radius. I have 5 arguments for the ...
1
vote
1answer
186 views

Texture Shaders vs. Pixel/Fragment Shaders?

My question is a simple one. Functionally, practically, and performance-wise, what are the differences between using a D3DX Texture Shader, and using a Pixel/Fragment Shader rendered with a full ...
3
votes
1answer
266 views

Making up everything from single pixels

I recently saw a game which looked a bit like minecraft, but it was a RPG. The enemies in this game consist completely of voxels and if they die, they collaps and every single voxels falls down, ...
4
votes
1answer
1k views

2D Software Lighting Issues in Java

I'm creating a 2D top-down tiled game in pure Java and by now I'm trying to implement a way to do lighting. First, some details on how I render: there is a screen class which handles all the ...
1
vote
1answer
168 views

Application design for specific points on image

Hi guys I am starting a simple hobby app in Unity, its a 2D app, which have some alphabets like A,B,C..Z (images) . There ll be specific paths where user touch one by one to complete drawing the ...
12
votes
3answers
800 views

How can I replicate the color limitations of the NES with an HLSL pixel shader?

So since 256 color mode is depreciated and no longer supported under Direct3D mode, I got the idea to use a pixel shader instead to simulate the NES palette of all possible colors so that fading ...
0
votes
3answers
190 views

help using image to overlay grayscale around player

I'm sorry for the confusing title but it is hard to explain in one sentence. This is what I have What I want to do is use that black overlay to convert everything in the black area to grayscale. ...
0
votes
1answer
200 views

Is it possible to render part of the screen in different pixel density using openGL?

Say I have an openGL screen and I want to render part of the screen in different pixel density than the whole screen pixel density. Is it possible and if possible how?
1
vote
0answers
205 views

Vertex shader to Pixel shader NVIDIA problem - restarting drivers

I have problem with my shader on NVIDIA cards. On AMD it's working right. Shader Builder exported CODE: //ROOT //PSParts //VSParts //Samplers sampler sLod23ColorGround : register(s0); sampler ...
0
votes
1answer
412 views

Picking a suitable resolution for a modern low-res game?

I'm working on a 2D game project right now (using SFML+OpenGL and C++) and I'm trying to figure out how to go about choosing a resolution. I want my game to have a pixel resolution that is around that ...
12
votes
3answers
3k views

How do I scale down pixel art?

There are plenty of algorithms to scale up pixel art. (I prefer hqx, personally.) But are there any notable algorithms to scale it down? My game is designed to run at a resolution of 1280x720, but if ...
1
vote
2answers
543 views

HLSL Pixel Shader that does palette swap

I have implemented a simple pixel shader which can replace a particular colour in a sprite with another colour. It looks something like this: sampler input : register(s0); float4 ...
0
votes
3answers
1k views

How do I create a curved line or filled circle or generally a circle using C++/SDL?

Hello I've been trying for ages to make a pixel circle using the putpixel function provided by SDL main website here is that function : void putpixel(int x,int y , int color , SDL_Surface* surface) { ...
0
votes
1answer
416 views

How do I check on non-transparent pixels in a bitmapdata?

I'm still working on my window cleaning game from one of my previous questions I marked a contribution as my answer, but after all this time I can't get it to work and I have to many questions about ...
0
votes
1answer
169 views

Scanline filling of polygons that share edges and vertices

In this picture (a perspective projection of an icosahedron), the scanline (red) intersects that vertex at the top. In an icosahedron each edge belongs to two triangles. From edge a, only one triangle ...
2
votes
1answer
170 views

How to alter image pixels of a wild life bird?

Hello so I was hoping someone knew how to move or change color and position actual image pixels and could explain and show the code to do so. I know how to write pixels on a surface or screen-surface ...
3
votes
1answer
388 views

Scaling sprite velocity / co-ordinatesin Android

I'm trying to find the answer to a question that I've had for a long time, but am having trouble finding it! I hope someone can help :-) I'm trying to find information on how to scale sprite velocity ...
3
votes
2answers
556 views

Scan-Line Z-Buffering Dilemma

I have a set of vertices in 3D space, and for each I retain the following information: Its 3D coordinates (x, y, z). A list of pointers to some of the other vertices with which it's connected by ...
3
votes
1answer
294 views

How do I multiply pixels on an SDL Surface?

Okay so I'm able to put blank pixels into a surface and also draw gradient pixels rectangles,etc But I don't know how to multiply the pixels on a surface so I was hoping someone could provide me ...
-2
votes
4answers
2k views

Trying to figure out SDL pixel manipulation?

Hello so I've found code that plots a pixel in an SDL Screen Surface : void putpixels(int x, int y, int color) { unsigned int *ptr = (unsigned int*)Screen->pixels; int lineoffset = y * ...
-2
votes
1answer
3k views

Where can I find a programmer/game developer to team up with? [closed]

I'm a pixel artist looking for an ametuer programmer/game developer to team up with, But I'm not sure where to start! I'm not particularly worried about profit, I'm only interested in making the game ...
1
vote
1answer
314 views

Fixed texture size (Pixel) libgdx, java

If I resize the window (e.g. fullscreen) the texture size also changes! I want that behaviour: If I change to fullscreen you will see more of the game world. The size (Pixel) of the texture stay the ...
1
vote
0answers
67 views

What is the standard way of using Q15 values?

To process 8-bit pixels, to do things like gamma correction without losing information, we normally upsample the values, work in 16 bits or whatever, and then downsample them to 8 bits. Now, this is ...
2
votes
2answers
1k views

Using pixel art on small high resolution screens

I'm making a game and I would like to utilize pixel art as my style. But I faced a problem, modern displays on my target platform (iOS) have extremely high resolution. So if my artist makes me some ...
2
votes
2answers
2k views

Java: How to Make a Player Class in a Tile-Based RPG

So I've been following a JavaHub tutorial that basically uses a pixel engine similar to MiniCraft. I've attempted to make a Player Class as such, and I'm basically making a mock Pokemon game for ...
0
votes
2answers
306 views

Android Game Development problem with Speed = Distance / Time

I have been coding speed for an object. I have made it so the object will move from one end of the screen to another at a speed depending on the screen size, at the monemt I have made it so it will ...
3
votes
1answer
2k views

Spritesheet per pixel collision XNA

So basically i'm using this: public bool IntersectPixels(Rectangle rectangleA, Color[] dataA,Rectangle rectangleB, Color[] dataB) { int top = Math.Max(rectangleA.Top, rectangleB.Top); ...
4
votes
3answers
595 views

C++ Efficient Pixel Management for Non-Polygon Graphics Engine

So I've been looking for a way to efficiently manage the pixels on a screen, but so far all I've found is along the lines of SetPixel() in windows (painfully slow), and drawing a rectangle 1px X 1px ...
0
votes
1answer
191 views

XNA - Debugging/Testing Individual Sprites and Pixel Collision

I ran through the first training on XNA where you make a shooter game. They did some thing that I would not do and I want to use their starting point to learn more things. I want to try better ...
2
votes
2answers
193 views

How to do reflective collisions with particles hitting background tiles?

In my 2d pixel old-school platformer, I'm looking for methods for bouncing particles off of background tiles. Particles aren't affected by gravity and collisions are "reflective". By that I mean a ...
3
votes
3answers
1k views

Optimum Screen Resolutions [closed]

Most PC games nowadays obviously come with the standard option to change the game's resolution from between 640x480 to 1920x1080 on average, depending on your monitor and whether or not you are ...