During this Season of KDE, we made a lot of design changes to the Mankala Engine. We successfully redesigned most of the components including the entire home page, boards and game variants. Now I was in the middle of creating a new cover image to select game variants. I tried to create a natural wooden board for Bohnenspiel, and well, we got most of the things nicely done.
I had used perlin noise and a custom shader to give the wooden-like texture to the board. I used this function in our shader for the random generation of the particles.
@pavankumarsg:matrix.org
GSoC
glsl
float rand(vec2 n) {
return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
}
To get a smooth, wooden-like surface, I used a function that interpolates between these random points. After experimenting with it a bit, I mixed and blended them with random values and was able to get a continuous noise surface.
glsl
float n = noise(v.yx * vec2(2.0, 12.0));
float rings = sin(v.x * 20.0 + n * 10.0);
But to get the wood effect, this was still not enough, as if we were to render this directly, then we would have gotten a blurry, cloud-like texture. So, we stretched the noise heavily across one axis to give it a wave-like effect, having a more similar texture to a board. This made a color stretch of dark and light brown.
qml
ShaderEffect {
anchors.fill: parent
property real time: 0.0
property variant color1: "#8B4513"
property variant color2: "#D2691E"
I used QML's ShaderEffect component to compile it and connect it to the MenuCard component in Mankala, which would act as a cover image while selecting Bohnenspiel. At last, I added some shadows and depth to make it more realistic, giving a feel of wood carving to the board.
You can run the below code in a qml project and see the noise generated in a few simple steps.
import QtQuick 2.15
import QtQuick.Window 2.15
Window {
width: 640; height: 480; visible: true; title: "Procedural Wood Shader"
ShaderEffect {
anchors.fill: parent
property variant color1: "#3b2310"
property variant color2: "#7a4b24"
fragmentShader: "
varying highp vec2 qt_TexCoord0;
uniform lowp vec4 color1;
uniform lowp vec4 color2;
float rand(vec2 n) {
return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
}
float noise(vec2 n) {
const vec2 d = vec2(0.0, 1.0);
vec2 b = floor(n), f = smoothstep(vec2(0.0), vec2(1.0), fract(n));
return mix(mix(rand(b), rand(b + d.yx), f.x), mix(rand(b + d.xy), rand(b + d.yy), f.x), f.y);
}
void main() {
vec2 v = qt_TexCoord0;
float n = noise(v.yx * vec2(2.0, 15.0));
float rings = sin(v.x * 30.0 + n * 8.0);
float woodGradiant = smoothstep(-0.8, 0.8, rings);
gl_FragColor = mix(color1, color2, woodGradiant);
}
"
}
}
While the small circular pits and the rectangulular spaces use the exact same logic but the rectangles look better due presence of a darker color and use of Drop Shadow which gives it a much more premium and wood like look.
https://madaror.github.io/tiled-diffusion.github.io/ - Image tiling using diffusion
https://pbr-book.org/3ed-2018/Texture/Noise - Noise Generation
https://dev.to/hexshift/how-to-generate-realistic-random-terrain-in-python-using-perlin-noise-3ch5 - Generation of random terrain using Perlin noise
https://www.sci.utah.edu/~leenak/IndStudy_reportfall/Perlin%20Noise%20on%20GPU.html - Implementation of Perlin Noise on GPU
Thanks for reading :)
Today we're releasing Krita 5.2.16. The previous version of 5.2 had issues with saving heif, heic and avif files, and while we are busy preparing 5.3, we decided this was worth it to make another release over.
If you're using the portable zip files, just open the zip file in Explorer and drag the folder somewhere convenient, then double-click on the Krita icon in the folder. This will not impact an installed version of Krita, though it will share your settings and custom resources with your regular installed version of Krita. For reporting crashes, also get the debug symbols folder.
[!NOTE] We are no longer making 32-bit Windows builds.
64 bits Windows Installer: krita-x64-5.2.16-setup.exe
Portable 64 bits Windows: krita-x64-5.2.16.zip
Note: starting with recent releases, the minimum supported distro versions may change.
[!WARNING] Starting with recent AppImage runtime updates, some AppImageLauncher versions may be incompatible. See AppImage runtime docs for troubleshooting.
Note: minimum supported MacOS may change between releases.
Krita on Android is still beta; tablets only.
For all downloads, visit https://download.kde.org/stable/krita/5.2.16/ and click on "Details" to get the hashes.
The Linux AppImage and the source tarballs are signed. You can retrieve the public key here. The signatures are here (filenames ending in .sig).
The KMyMoney 5.2.2 release contains numerous bug fixes and improvements to enhance stability, usability, and performance of KMyMoney. The focus has been on addressing crashes, improving the user interface, and fixing data handling issues. The source code is available on various mirrors world-wide.
Over 50 bugs were addressed in this release. For a complete list, please refer to the KDE Bugzilla.
This release is a drop-in replacement for 5.2.1. Simply install the new version and your existing data files will work without modification.
The flatpak version has been updated with the latest dependencies and includes home filesystem access permission.
We would like to thank all contributors who helped make this release possible through code contributions, bug reports, translations, and testing.
KMyMoney is released under various open source licenses. See the LICENSES folder in the source distribution for details.
A complete description of all changes can be found in the ChangeLog
toscalix
