GLTexture: glTexParam is not supported on multisampled textures

So try to avoid performing these calls on such texture

Change-Id: I051fd6a0150d07656687a1f84756d8a3d506ec24
Reviewed-by: Mike Krus <mike.krus@kdab.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/render/renderers/opengl/textures/gltexture.cpp b/src/render/renderers/opengl/textures/gltexture.cpp
index ce212de03..27b94882a 100644
--- a/src/render/renderers/opengl/textures/gltexture.cpp
+++ b/src/render/renderers/opengl/textures/gltexture.cpp
@@ -495,6 +495,13 @@ void GLTexture::uploadGLTextureData()
 
 void GLTexture::updateGLTextureParameters()
 {
+    const bool isMultisampledTexture = (m_actualTarget == QAbstractTexture::Target2DMultisample ||
+                                        m_actualTarget == QAbstractTexture::Target2DMultisampleArray);
+    // Multisampled textures can only be accessed by texelFetch in shaders
+    // and don't support wrap modes and mig/mag filtes
+    if (isMultisampledTexture)
+        return;
+
     m_gl->setWrapMode(QOpenGLTexture::DirectionS, static_cast<QOpenGLTexture::WrapMode>(m_parameters.wrapModeX));
     if (m_actualTarget != QAbstractTexture::Target1D &&
             m_actualTarget != QAbstractTexture::Target1DArray &&