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>

0 files changed, 0 insertions, 0 deletions