nanovg optimizations + image renderer

2 files changed, 59 insertions, 0 deletions

diff --git a/src/main/java/io/polyfrost/oneconfig/lwjgl/image/Image.java b/src/main/java/io/polyfrost/oneconfig/lwjgl/image/Image.java
new file mode 100644
index 0000000..2ed7276
--- /dev/null
+++ b/src/main/java/io/polyfrost/oneconfig/lwjgl/image/Image.java
@@ -0,0 +1,20 @@
+package io.polyfrost.oneconfig.lwjgl.image;
+
+import java.nio.ByteBuffer;
+
+public class Image {
+    private final int reference;
+    private final ByteBuffer buffer;
+    public Image(int reference, ByteBuffer buffer) {
+        this.reference = reference;
+        this.buffer = buffer;
+    }
+
+    public ByteBuffer getBuffer() {
+        return buffer;
+    }
+
+    public int getReference() {
+        return reference;
+    }
+}
diff --git a/src/main/java/io/polyfrost/oneconfig/lwjgl/image/ImageLoader.java b/src/main/java/io/polyfrost/oneconfig/lwjgl/image/ImageLoader.java
new file mode 100644
index 0000000..b0cb6d4
--- /dev/null
+++ b/src/main/java/io/polyfrost/oneconfig/lwjgl/image/ImageLoader.java
@@ -0,0 +1,39 @@
+package io.polyfrost.oneconfig.lwjgl.image;
+
+import io.polyfrost.oneconfig.lwjgl.IOUtil;
+import org.lwjgl.nanovg.NanoVG;
+import org.lwjgl.stb.STBImage;
+
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+
+public class ImageLoader {
+    private final HashMap<String, Image> imageHashMap = new HashMap<>();
+    public static ImageLoader INSTANCE = new ImageLoader();
+
+    public boolean loadImage(long vg, String fileName) {
+        if (!imageHashMap.containsKey(fileName)) {
+            int[] width = {0};
+            int[] height = {0};
+            int[] channels = {0};
+
+            ByteBuffer image = IOUtil.resourceToByteBufferNullable(fileName);
+            if (image == null) {
+                return false;
+            }
+
+            ByteBuffer buffer = STBImage.stbi_load_from_memory(image, width, height, channels, 4);
+            if (buffer == null) {
+                return false;
+            }
+
+            imageHashMap.put(fileName, new Image(NanoVG.nvgCreateImageRGBA(vg, width[0], height[0], NanoVG.NVG_IMAGE_REPEATX | NanoVG.NVG_IMAGE_REPEATY | NanoVG.NVG_IMAGE_GENERATE_MIPMAPS, buffer), buffer));
+            return true;
+        }
+        return true;
+    }
+
+    public Image getImage(String fileName) {
+        return imageHashMap.get(fileName);
+    }
+}