Fix crash in QOpenGLTexture

Any function using the non-dsa helpers and glTextureParameterf() would
crash as this code path failed to initialize the function pointers.

Task-number: QTBUG-47133
Change-Id: I8970c9693ec471a96b135ae5728ab6407ee06a6f
Reviewed-by: Mike Krus <[email protected]>
Reviewed-by: Giuseppe D'Angelo <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gui/opengl/qopengltexturehelper.cpp b/src/gui/opengl/qopengltexturehelper.cpp
index 440fdad081a..bf8b514449f 100644
--- a/src/gui/opengl/qopengltexturehelper.cpp
+++ b/src/gui/opengl/qopengltexturehelper.cpp
@@ -101,6 +101,8 @@ QOpenGLTextureHelper::QOpenGLTextureHelper(QOpenGLContext *context)
         // Use our own DSA emulation
         TextureParameteri = &QOpenGLTextureHelper::qt_TextureParameteri;
         TextureParameteriv = &QOpenGLTextureHelper::qt_TextureParameteriv;
+        TextureParameterf = &QOpenGLTextureHelper::qt_TextureParameterf;
+        TextureParameterfv = &QOpenGLTextureHelper::qt_TextureParameterfv;
         GenerateTextureMipmap = &QOpenGLTextureHelper::qt_GenerateTextureMipmap;
         TextureStorage3D = &QOpenGLTextureHelper::qt_TextureStorage3D;
         TextureStorage2D = &QOpenGLTextureHelper::qt_TextureStorage2D;