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

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13
votes
3answers
4k 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
798 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
4k 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
701 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
233 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
204 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
605 views

Scaling sprite velocity / co-ordinates in 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
885 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
473 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 ...
0
votes
4answers
4k 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
9k 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
416 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
75 views

What is the standard way of using Q15 values? [closed]

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
2k 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
3k 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
326 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
985 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
196 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
214 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 ...
4
votes
3answers
2k 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 ...
1
vote
2answers
433 views

Why is the pixel so popular as the metric unit of a game?

I keep seeing everywhere people using pixels for resolving collisions, angles, distances. I wonder if using the pixel as the metric unit for a game is a good solution, first because you're tying your ...
20
votes
3answers
2k views

How does one avoid the “staircase effect” in pixel art motion?

I am rendering sprites at exact pixel coordinates to avoid the blurring effect caused by antialiasing (the sprites are pixel-art and would look awful if filtered). However, since the movement of the ...