Add support for TEXTURE_EXTERNAL_OES in the internal texture blitter

Assuming that the target is always GL_TEXTURE_2D is not going to be sufficient
when working with EGLStreams for example where GL_TEXTURE_EXTERNAL_OES is a
must. The blitter is now changed to support multiple programs so other targets
can easily be added as well in the future, if necessary.

Change-Id: I247d30600222fb5af6305ed5d9740baa5e43e83e
Reviewed-by: Louai Al-Khanji <louai.al-khanji@theqtcompany.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp
index 04c9b3f72c..2792f6f1a3 100644
--- a/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp
+++ b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp
@@ -61,6 +61,7 @@ QOpenGLTextureBlitWindow::QOpenGLTextureBlitWindow()
     m_context->makeCurrent(this);
 
     m_blitter.create();
+    qDebug("GL_TEXTURE_EXTERNAL_OES support: %d", m_blitter.supportsExternalOESTarget());
 }
 
 void QOpenGLTextureBlitWindow::render()
@@ -132,6 +133,12 @@ void QOpenGLTextureBlitWindow::render()
     m_blitter.setSwizzleRB(false);
     m_blitter.release();
 
+    if (m_blitter.supportsExternalOESTarget()) {
+        // Cannot do much testing here, just verify that bind and release work, meaning that the program is present.
+        m_blitter.bind(0x8D65);
+        m_blitter.release();
+    }
+
     m_context->swapBuffers(this);
 }