PulseStudio/VoxelEngine
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Atlas padding, mip-mapping

Browse Source
This commit is contained in:
MihailRis
2023-11-12 04:42:04 +03:00
parent 9cde99f3f7
commit 55538d3b02
8 changed files with 63 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/ImageData.cpp
+22 -4
View File
@@ -23,6 +23,7 @@ ImageData::~ImageData() {
}
}
#include <iostream>
ImageData* add_atlas_margins(ImageData* image, int grid_size) {
// RGBA is only supported
assert(image->getFormat() == ImageFormat::rgba8888);
@@ -39,16 +40,33 @@ ImageData* add_atlas_margins(ImageData* image, int grid_size) {
int imgres = image->getWidth() / grid_size;
for (int row = 0; row < grid_size; row++) {
for (int col = 0; col < grid_size; col++) {
int ox = 1 + col * (imgres + 2);
int oy = 1 + row * (imgres + 2);
int sox = col * imgres;
int soy = row * imgres;
int dox = 1 + col * (imgres + 2);
int doy = 1 + row * (imgres + 2);
for (int ly = -1; ly <= imgres; ly++) {
for (int lx = -1; lx <= imgres; lx++) {
int sy = max(min(ly, imgres-1), 0);
int sx = max(min(lx, imgres-1), 0);
for (int c = 0; c < 4; c++)
dstdata[((oy+ly) * dstwidth + ox + lx) * 4 + c] = srcdata[(sy * srcwidth + sx) * 4 + c];
dstdata[((doy+ly) * dstwidth + dox + lx) * 4 + c] = srcdata[((soy+sy) * srcwidth + sox + sx) * 4 + c];
}
}
for (int ly = 0; ly < imgres; ly++) {
for (int lx = 0; lx < imgres; lx++) {
int sy = lx;
int sx = ly;
if (srcdata[((soy+sy) * srcwidth + sox + sx) * 4 + 3]) {
for (int c = 0; c < 3; c++) {
dstdata[((doy+ly) * dstwidth + dox + lx + 1) * 4 + c] = srcdata[((soy+sy) * srcwidth + sox + sx) * 4 + c];
dstdata[((doy+ly + 1) * dstwidth + dox + lx) * 4 + c] = srcdata[((soy+sy) * srcwidth + sox + sx) * 4 + c];
dstdata[((doy+ly + 1) * dstwidth + dox + lx + 1) * 4 + c] = srcdata[((soy+sy) * srcwidth + sox + sx) * 4 + c];
}
}
}
}
}
}
}
return new ImageData(image->getFormat(), dstwidth, dstheight, dstdata);
}