Remove obsolete environment variables setup

.github/workflows/osx.yml

@@ -10,14 +10,12 @@ jobs:
     name: GPXSee Qt5 build
     runs-on: macos-latest
     steps:
-      - name: Set environment variables
-        run: echo "PATH=/usr/local/opt/qt@5/bin:$PATH" >> $GITHUB_ENV
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Install dependencies
-        run: |
-          brew update
-          brew install qt5
+      - name: Install Qt
+        uses: jurplel/install-qt-action@v3
+        with:
+          version: '5.15.2'
       - name: Create localization
         run: lrelease gpxsee.pro
       - name: Configure build
@@ -36,14 +34,13 @@ jobs:
     name: GPXSee Qt6 build
     runs-on: macos-latest
     steps:
-      - name: Set environment variables
-        run: echo "PATH=/usr/local/opt/qt@6/bin:$PATH" >> $GITHUB_ENV
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Install dependencies
-        run: |
-           brew update
-           brew install qt6
+      - name: Install Qt
+        uses: jurplel/install-qt-action@v3
+        with:
+          version: '6.4.3'
+          modules: qtpositioning qt5compat qtserialport
       - name: Create localization
         run: lrelease gpxsee.pro
       - name: Configure build

src/map/image.cpp

@@ -2,6 +2,11 @@
 #include "image.h"
 
 #define TILE_SIZE 256
+#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
+#define OPENGL_SIZE_LIMIT 536870912 /* 512MB */
+#else
+#define OPENGL_SIZE_LIMIT 134217728 /* 128MB */
+#endif
 
 void Image::draw(QPainter *painter, const QRectF &rect, Map::Flags flags)
 {
@@ -11,7 +16,7 @@ void Image::draw(QPainter *painter, const QRectF &rect, Map::Flags flags)
 	/* When OpenGL is used, big images are rendered incredibly slow or not at
 	   all using the QPainter::drawImage() function with a source rect set. So
 	   we have to tile the image ourself before it can be drawn. */
-	if (flags & Map::OpenGL) {
+	if (flags & Map::OpenGL && _img.sizeInBytes() > OPENGL_SIZE_LIMIT) {
 		for (int i = sr.left()/TILE_SIZE; i <= sr.right()/TILE_SIZE; i++) {
 			for (int j = sr.top()/TILE_SIZE; j <= sr.bottom()/TILE_SIZE; j++) {
 				QPoint tl(i * TILE_SIZE, j * TILE_SIZE);