Fix call to drawBuffers in SubmissionContext

Implementations of GraphicsHelperInterface::drawBuffers expect an array
of zero-based attachment point indexes (GL_COLOR_ATTACHMENT0 is added to
the indexes internally), so we can't convert the attachment index to an
OpenGL enum before calling drawBuffers.

Change-Id: Ibc8af9f7c402b055c5391ad673b815c1fb65a40a
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
(cherry picked from commit 0157b93098fb5339cfe8fe99a111cf6e6f047565)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/renderers/opengl/graphicshelpers/submissioncontext.cpp b/src/plugins/renderers/opengl/graphicshelpers/submissioncontext.cpp
index b3cf115ca..7a7da931a 100644
--- a/src/plugins/renderers/opengl/graphicshelpers/submissioncontext.cpp
+++ b/src/plugins/renderers/opengl/graphicshelpers/submissioncontext.cpp
@@ -1598,7 +1598,7 @@ void SubmissionContext::blitFramebuffer(Qt3DCore::QNodeId inputRenderTargetId,
     if (!outputBufferIsDefault) {
         // Note that we use glDrawBuffers, not glDrawBuffer. The
         // latter is not available with GLES.
-        const int buf = glAttachmentPoint(outputAttachmentPoint);
+        const int buf = outputAttachmentPoint;
         drawBuffers(1, &buf);
     }