ilyakooo0/metal-metaballs
1
0
Fork 0
mirror of https://github.com/ilyakooo0/metal-metaballs.git synced 2024-09-11 10:35:56 +03:00
Code Issues Projects Releases Wiki Activity

Improved coloring in the links (now not affected by close metaballs).

Browse Source
This commit is contained in:
vinivendra 2016-02-20 02:20:13 -05:00
parent 6b476b7ecb
commit 7a59a03345
2 changed files with 20 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

BIN
PixelImage.xcworkspace/xcuserdata/vini.xcuserdatad/UserInterfaceState.xcuserstate generated
View File

Binary file not shown.

21
PixelImage/shaders.metal
View File

@ -22,6 +22,8 @@ kernel void
float sum = 0;
float3 colorSum = float3(0, 0, 0);
float colorAccumulation = 0;
float3 colorSumLink = float3(0, 0, 0);
float greatestLinkWeight = 0.0;
char x, y;
@ -43,6 +45,7 @@ kernel void
float bendClose = 0.0;
float bendCloseCount = 0.0;
float red = 0.0;
for (x = 0; x < numberOfMetaballs; x += 1) {
float distance1 = metaballDistances[x];
@ -74,7 +77,18 @@ kernel void
bendCloseCount += 1.0;
}
red += step(0.4, weightedValue);
if (weightedLink > greatestLinkWeight) {
greatestLinkWeight = weightedLink;
colorSumLink = float3(0.0, 0.0, 0.0);
colorSumLink += metaballColors[x] / distance1;
colorSumLink += metaballColors[y] / distance2;
colorSumLink /= (1 / distance1) + (1 / distance2);
}
float metaballValue = step(0.5, weightedValue + weightedLink);
sum += metaballValue;
}
}
@ -91,7 +105,12 @@ kernel void
result += bendClose * 10;
result = clamp(result, 0.0, 1.0);
colorSum /= colorAccumulation;
colorSum = colorSum / colorAccumulation;
if (result > 0.0 && red < 1.0) {
colorSum = colorSumLink;
}
colorSum *= result;
outTexture.write(float4(colorSum.bgr, 1), gid);