slideshow: Move Vortex’ tileInfo attribute upload to the first frame

(cherry-picked from the commit 9adeebadd5d1728e9abaec67aa4dd8a0c300c98f)

Change-Id: Ifbc154755d43a085b78740a5a3c97ed2cbe9a905
Reviewed-on: https://gerrit.libreoffice.org/22774
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>

1 files changed, 4 insertions, 14 deletions

diff --git a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
index 39a68bc0424f..a70c6c55e696 100644
--- a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
+++ b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
@@ -1557,7 +1557,6 @@ public:
     }
 
 private:
-    virtual void prepare( double nTime, double SlideWidth, double SlideHeight, double DispWidth, double DispHeight ) override;
     virtual void finishTransition() override;
     virtual GLuint makeShader() const override;
     virtual void prepareTransition( sal_Int32 glLeavingSlideTex, sal_Int32 glEnteringSlideTex ) override;
@@ -1575,19 +1574,6 @@ private:
     std::vector<GLfloat> mvTileInfo;
 };
 
-void VortexTransition::prepare( double, double, double, double, double )
-{
-    glBindBuffer(GL_ARRAY_BUFFER, mnTileInfoBuffer);
-    CHECK_GL_ERROR();
-    glEnableVertexAttribArray(mnTileInfoLocation);
-    CHECK_GL_ERROR();
-    glVertexAttribPointer(mnTileInfoLocation, 1, GL_FLOAT, GL_FALSE, 0, nullptr);
-    CHECK_GL_ERROR();
-
-    glBindBuffer(GL_ARRAY_BUFFER, 0);
-    CHECK_GL_ERROR();
-}
-
 void VortexTransition::finishTransition()
 {
     PermTextureTransition::finishTransition();
@@ -1669,6 +1655,10 @@ void VortexTransition::prepareTransition( sal_Int32 glLeavingSlideTex, sal_Int32
 
     glBindBuffer(GL_ARRAY_BUFFER, mnTileInfoBuffer);
     CHECK_GL_ERROR();
+    glEnableVertexAttribArray(mnTileInfoLocation);
+    CHECK_GL_ERROR();
+    glVertexAttribPointer(mnTileInfoLocation, 1, GL_FLOAT, GL_FALSE, 0, nullptr);
+    CHECK_GL_ERROR();
     glBufferData(GL_ARRAY_BUFFER, mvTileInfo.size()*sizeof(GLfloat), mvTileInfo.data(), GL_STATIC_DRAW);
     CHECK_GL_ERROR();