From f27d8ac03e569728c5861a366853b8a3ffcfe215 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Mon, 3 Apr 2023 13:00:43 +0200
Subject: rhi: gl: Reset scissor before blit
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

glBlitFramebuffer is affected by the scissor test.

Fixes: QTBUG-103792
Change-Id: I2eccc9f3e469af8b2fdff22e9fb7c2311c25b867
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
(cherry picked from commit 33b7a3b8466bfc76a33d638c9d1d00d242c438d2)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/gui/rhi/qrhigles2.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/gui/rhi/qrhigles2.cpp b/src/gui/rhi/qrhigles2.cpp
index 10ff4b7179..49799599ce 100644
--- a/src/gui/rhi/qrhigles2.cpp
+++ b/src/gui/rhi/qrhigles2.cpp
@@ -3335,6 +3335,10 @@ void QRhiGles2::executeCommandBuffer(QRhiCommandBuffer *cb)
             break;
         case QGles2CommandBuffer::Command::BlitFromRenderbuffer:
         {
+            // Altering the scissor state, so reset the stored state, although
+            // not strictly required as long as blit is done in endPass() only.
+            cbD->graphicsPassState.reset();
+            f->glDisable(GL_SCISSOR_TEST);
             GLuint fbo[2];
             f->glGenFramebuffers(2, fbo);
             f->glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo[0]);
-- 
cgit v1.2.1