Unity 5 palette swap single object how to#

Right-click on your asset viewer and choose Create Name it whatever. Click Game Object 3D Object Cube Create a new material. So, first thing’s first, create an empty 3D project. This is a slightly advanced topic, so I am going to assume you have a working knowledge of Unity’s basics.

Unity 5 palette swap single object how to#

The other thing most people don't realize is Unity passes all the necessary information about texture resolutions to do this with out needing to hard code anything. How to Change Material Properties in Unity. If this is a palette that's more than 1 pixel high you would want to do the same mid-pixel sampling for y too! Instead you want to sample from a range of 'half pixel' to '1 - half pixel' on x. Any images you import are NOT assumed to be 2D images (Sprites). But as you can see above that's going to get you values you don't want. QImage also provides the static fromData() function, constructing a QImage from the given data. So going back to the original shader code, the thing people usually do to sample a texture is construct a texture UV with a range from '0.0' and '1.0' on the x, and then sample '0.0' for y. QImage provides several ways of loading an image file: The file can be loaded when constructing the QImage object, or by using the load() or loadFromData() functions later on. Interestingly, if you do this offset, even the bilinear filtered image will get you the values you actually want. What you really want to do, even when using point sampling, is offset your 'lookup' UV's by half a pixel so it's sampling from the center, like this. However the UVs of '0.0', '0.25', '0.5' and 0.75' are still on that border between colors, and due to floating point precision it can end up one side or the other in sometimes unpredictable ways. This is probably more how you're thinking about the texture. Notice how the color at '0.0' on the left isn't fully red? Also notice how '0.5' in this case is also half way between the green and blue? Just enabling clamping will remove the blending on the ends, but between the other pixels. This is what that 4x1 texture looks like blown up to 512x128 with bilinear filtering and wrapping set to repeat (the default settings). Lets look at a 4x1 palette of red, green, blue, and black.Įrm, okay, let's look at that a little bigger.

With clamping, point filtering, and no mip maps it'll act a bit more like you expect, but you're still technically sampling on the border between pixel colors so you may get the wrong color sometimes. Added addForce() and addTorque() to Object script. A UV value of '1.0' is on the opposite edge, and is the same color! With bilinear (or better) filtering w/o clamped wrapping enabled you're going to get a color that's 50% of the first pixel and 50% of the last pixel. Fixed multiple buttons on a single object not syncing to players who joined late. To understand why the current shader may not be working like you expect, a UV value of '0.0' is on the edge of the texture between two pixels. Click to expand.Why are you using 3 rows? Why not a 1x256 RGB texture? That'll make this much easier to handle in the shader.