From 67b24ac50637ecda00990b239fc5ed0b73e54d75 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samuel=20R=C3=B8dal?= <samuel.rodal@nokia.com>
Date: Tue, 14 Dec 2010 12:03:23 +0100
Subject: Fixed stroke / fill inconsistencies in GL 2 paint engine.

Get rid of the aliased coordinate delta, like we already did in the
raster paint engine.

Task-number: QTBUG-16043
Reviewed-by: Gunnar Sletta
---
 .../gl2paintengineex/qpaintengineex_opengl2.cpp    | 40 ----------------------
 .../gl2paintengineex/qpaintengineex_opengl2_p.h    |  2 --
 2 files changed, 42 deletions(-)

diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index bb7c804..cdd785a 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -381,12 +381,6 @@ void QGL2PaintEngineExPrivate::updateMatrix()
         dx = ceilf(dx - 0.5f);
         dy = ceilf(dy - 0.5f);
     }
-#ifndef Q_OS_SYMBIAN
-    if (addOffset) {
-        dx += 0.49f;
-        dy += 0.49f;
-    }
-#endif
     pmvMatrix[0][0] = (wfactor * transform.m11())  - transform.m13();
     pmvMatrix[1][0] = (wfactor * transform.m21())  - transform.m23();
     pmvMatrix[2][0] = (wfactor * dx) - transform.m33();
@@ -488,11 +482,6 @@ void QGL2PaintEngineExPrivate::drawTexture(const QGLRect& dest, const QGLRect& s
     currentBrush = noBrush;
     shaderManager->setSrcPixelType(pattern ? QGLEngineShaderManager::PatternSrc : QGLEngineShaderManager::ImageSrc);
 
-    if (addOffset) {
-        addOffset = false;
-        matrixDirty = true;
-    }
-
     if (snapToPixelGrid) {
         snapToPixelGrid = false;
         matrixDirty = true;
@@ -675,16 +664,6 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 {
     transferMode(BrushDrawingMode);
 
-    const QOpenGL2PaintEngineState *s = q->state();
-    const bool newAddOffset = !(s->renderHints & QPainter::Antialiasing) &&
-                              (qbrush_style(currentBrush) == Qt::SolidPattern) &&
-                              !multisamplingAlwaysEnabled;
-
-    if (addOffset != newAddOffset) {
-        addOffset = newAddOffset;
-        matrixDirty = true;
-    }
-
     if (snapToPixelGrid) {
         snapToPixelGrid = false;
         matrixDirty = true;
@@ -1203,12 +1182,6 @@ void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
 void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen)
 {
     const QOpenGL2PaintEngineState *s = q->state();
-    const bool newAddOffset = !(s->renderHints & QPainter::Antialiasing) && !multisamplingAlwaysEnabled;
-    if (addOffset != newAddOffset) {
-        addOffset = newAddOffset;
-        matrixDirty = true;
-    }
-
     if (snapToPixelGrid) {
         snapToPixelGrid = false;
         matrixDirty = true;
@@ -1638,10 +1611,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp
     setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinates->data());
     setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinates->data());
 
-    if (addOffset) {
-        addOffset = false;
-        matrixDirty = true;
-    }
     if (!snapToPixelGrid) {
         snapToPixelGrid = true;
         matrixDirty = true;
@@ -1786,11 +1755,6 @@ void QGL2PaintEngineExPrivate::drawPixmapFragments(const QPainter::PixmapFragmen
     textureCoordinateArray.clear();
     opacityArray.reset();
 
-    if (addOffset) {
-        addOffset = false;
-        matrixDirty = true;
-    }
-
     if (snapToPixelGrid) {
         snapToPixelGrid = false;
         matrixDirty = true;
@@ -2087,10 +2051,6 @@ void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, uint value)
 {
     transferMode(BrushDrawingMode);
 
-    if (addOffset) {
-        addOffset = false;
-        matrixDirty = true;
-    }
     if (snapToPixelGrid) {
         snapToPixelGrid = false;
         matrixDirty = true;
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index b255e75..88172fb 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -181,7 +181,6 @@ public:
             elementIndicesVBOId(0),
             opacityArray(0),
             snapToPixelGrid(false),
-            addOffset(false),
             nativePaintingActive(false),
             inverseScale(1),
             lastMaskTextureUsed(0)
@@ -283,7 +282,6 @@ public:
     GLfloat staticTextureCoordinateArray[8];
 
     bool snapToPixelGrid;
-    bool addOffset; // When enabled, adds a 0.49,0.49 offset to matrix in updateMatrix
     bool nativePaintingActive;
     GLfloat pmvMatrix[3][3];
     GLfloat inverseScale;
-- 
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