From 0f4c51936e8d79dd15fe82bb2ba4bb18f77252c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Thu, 27 Aug 2015 22:16:49 +0200
Subject: [PATCH] Use shader traits for magnifer effect

adapted from the zoom effect patch which
was broken likewise in KWin/5

REVIEW: 124942
---
 effects/magnifier/magnifier.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/effects/magnifier/magnifier.cpp b/effects/magnifier/magnifier.cpp
index 0bb925ea1a..4f8f81d0a9 100644
--- a/effects/magnifier/magnifier.cpp
+++ b/effects/magnifier/magnifier.cpp
@@ -153,7 +153,14 @@ void MagnifierEffect::paintScreen(int mask, QRegion region, ScreenPaintData& dat
             m_fbo->blitFromFramebuffer(srcArea);
             // paint magnifier
             m_texture->bind();
+            auto s = ShaderManager::instance()->pushShader(ShaderTrait::MapTexture);
+            QMatrix4x4 mvp;
+            const QSize size = effects->virtualScreenSize();
+            mvp.ortho(0, size.width(), size.height(), 0, 0, 65535);
+            mvp.translate(area.x(), area.y());
+            s->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
             m_texture->render(infiniteRegion(), area);
+            ShaderManager::instance()->popShader();
             m_texture->unbind();
             QVector<float> verts;
             GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();