From: Bård Eirik Winther <bwinther@cisco.com>
Date: Thu, 8 Aug 2013 11:31:21 +0000 (+0000)
Subject: qv4l2: fix black screen with opengl after capture
X-Git-Tag: v4l-utils-1.2.0~409
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3e1988f1498447f644e2698d8e7deab803588262;p=platform%2Fupstream%2Fv4l-utils.git

qv4l2: fix black screen with opengl after capture

Fixes the issue when the window was beeing resized/moved
and the frame image would become black.

Signed-off-by: Bård Eirik Winther <bwinther@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---

diff --git a/utils/qv4l2/capture-win-gl.cpp b/utils/qv4l2/capture-win-gl.cpp
index 6071410..c8238c5 100644
--- a/utils/qv4l2/capture-win-gl.cpp
+++ b/utils/qv4l2/capture-win-gl.cpp
@@ -253,6 +253,12 @@ void CaptureWinGLEngine::paintGL()
 		changeShader();
 
 	if (m_frameData == NULL) {
+		glBegin(GL_QUADS);
+		glTexCoord2f(0.0f, 0.0f); glVertex2f(0.0, 0);
+		glTexCoord2f(1.0f, 0.0f); glVertex2f(m_frameWidth, 0);
+		glTexCoord2f(1.0f, 1.0f); glVertex2f(m_frameWidth, m_frameHeight);
+		glTexCoord2f(0.0f, 1.0f); glVertex2f(0, m_frameHeight);
+		glEnd();
 		return;
 	}