1 files changed, 14 insertions, 2 deletions
diff --git a/src/gui/opengl/qopenglpaintengine.cpp b/src/gui/opengl/qopenglpaintengine.cpp
index 8eeaa316d0..6ed2fe58b9 100644
--- a/src/gui/opengl/qopenglpaintengine.cpp
+++ b/src/gui/opengl/qopenglpaintengine.cpp
@@ -1496,6 +1496,20 @@ void QOpenGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, c
         d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::NonPremultipliedImageSrc);
         bindOption = 0;
         break;
+    case QImage::Format_Alpha8:
+        if (ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::TextureRGFormats)) {
+            d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::AlphaImageSrc);
+            bindOption = QOpenGLTextureCache::UseRedFor8BitBindOption;
+        } else
+            d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc);
+        break;
+    case QImage::Format_Grayscale8:
+        if (ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::TextureRGFormats)) {
+            d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::GrayscaleImageSrc);
+            bindOption = QOpenGLTextureCache::UseRedFor8BitBindOption;
+        } else
+            d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc);
+        break;
     default:
         d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::ImageSrc);
         break;
@@ -1586,10 +1600,8 @@ void QOpenGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &text
 
         {
             QStaticTextItem staticTextItem;
-            staticTextItem.chars = const_cast<QChar *>(ti.chars);
             staticTextItem.setFontEngine(ti.fontEngine);
             staticTextItem.glyphs = glyphs.data();
-            staticTextItem.numChars = ti.num_chars;
             staticTextItem.numGlyphs = glyphs.size();
             staticTextItem.glyphPositions = positions.data();