MacOS retina support

runelite · Mar 14, 2024 · bffe2f2 · bffe2f2
1 parent 2430809
commit bffe2f2
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/rlawt_mac.m b/rlawt_mac.m
@@ -29,6 +29,7 @@
 #include <jawt_md.h>
 #include <OpenGL/gl3.h>
 #include <QuartzCore/QuartzCore.h>
+#include <AppKit/AppKit.h>
 
 @protocol CanSetContentsChanged
 -(void)setContentsChanged;
@@ -110,8 +111,9 @@ static void propsPutInt(CFMutableDictionaryRef props, const CFStringRef key, int
 static bool rlawtCreateIOSurface(JNIEnv *env, AWTContext *ctx) {
 	CFMutableDictionaryRef props = CFDictionaryCreateMutable(NULL, 4, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
 	CGSize size = ctx->layer.frame.size;
-	propsPutInt(props, kIOSurfaceHeight, size.height);
-	propsPutInt(props, kIOSurfaceWidth, size.width);
+	CGFloat scale = [[NSScreen mainScreen] backingScaleFactor];
+	propsPutInt(props, kIOSurfaceHeight, size.height*scale);
+	propsPutInt(props, kIOSurfaceWidth, size.width*scale);
 	propsPutInt(props, kIOSurfaceBytesPerElement, 4);
 	propsPutInt(props, kIOSurfacePixelFormat, (int)'BGRA');
 
@@ -128,7 +130,7 @@ static bool rlawtCreateIOSurface(JNIEnv *env, AWTContext *ctx) {
 	CGLError err = CGLTexImageIOSurface2D(
 		ctx->context,
 		target, GL_RGBA,
-		size.width, size.height,
+		size.width*scale, size.height*scale,
 		GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 		buf, 
 		0);
@@ -217,7 +219,8 @@ JNIEXPORT void JNICALL Java_net_runelite_rlawt_AWTContext_createGLContext(JNIEnv
 		layer.needsDisplayOnBoundsChange = false;
 		layer.magnificationFilter = kCAFilterNearest;
 		layer.contentsGravity = kCAGravityCenter;
-		layer.affineTransform = CGAffineTransformMakeScale(1, -1);
+		CGFloat scale = 1.0/[[NSScreen mainScreen] backingScaleFactor];
+		layer.affineTransform = CGAffineTransformMakeScale(scale, -scale);
 
 		ctx->layer = layer;
 		dspi.layer = layer;