From 7a54885b1df9baf793374e3cb9fdf8be93ee7c80 Mon Sep 17 00:00:00 2001 From: Eskil Abrahamsen Blomfeldt Date: Tue, 4 Jan 2011 15:35:58 +0100 Subject: Fix regression in text rendering in OpenGL2 engine Change 532115bcaa370af827a5cbad017b272842c5aacf introduced a regression by fixing a typo in the QT_OPENGL_ES_2 macro. This caused a broken and untested code path to be used in the GLES2 case. Since the QImage scanlines are 32 bit aligned, QImage::width() cannot be used when copying the data. Rather than pass in bytesPerLine() to the GL function, I opted to revert to the proven behavior, where the pad bytes are never read by GL but each scanline is copied separately, to avoid further regressions on different hardware. This also seems like the more correct approach, as the pad bytes should ideally not be copied into the cache texture. Reviewed-by: Samuel --- src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp | 4 ---- 1 file changed, 4 deletions(-) diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp index 1b879c3..ad1bf31 100644 --- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp +++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp @@ -293,9 +293,6 @@ void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph) if (mask.format() == QImage::Format_RGB32) { glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_BGRA, GL_UNSIGNED_BYTE, mask.bits()); } else { -#ifdef QT_OPENGL_ES_2 - glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits()); -#else // glTexSubImage2D() might cause some garbage to appear in the texture if the mask width is // not a multiple of four bytes. The bug appeared on a computer with 32-bit Windows Vista // and nVidia GeForce 8500GT. GL_UNPACK_ALIGNMENT is set to four bytes, 'mask' has a @@ -307,7 +304,6 @@ void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph) for (int i = 0; i < maskHeight; ++i) glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, maskWidth, 1, GL_ALPHA, GL_UNSIGNED_BYTE, mask.scanLine(i)); -#endif } } -- cgit v0.12 From 64852122ba71bbb297b4f1e440f6fabee16ca2fe Mon Sep 17 00:00:00 2001 From: Jiang Jiang Date: Fri, 7 Jan 2011 16:15:25 +0100 Subject: Fix crash in QTextBlock::next()/previous() We should check not just p but also n in next()/previous(), which is what isValid() does. Otherwise n == 0 will cause crash in QFragmentMap. Task-number: QTBUG-16279 Reviewed-by: Eskil --- src/gui/text/qtextobject.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/gui/text/qtextobject.cpp b/src/gui/text/qtextobject.cpp index ea2ef2d..4b92379 100644 --- a/src/gui/text/qtextobject.cpp +++ b/src/gui/text/qtextobject.cpp @@ -1488,7 +1488,7 @@ QTextBlock::iterator QTextBlock::end() const */ QTextBlock QTextBlock::next() const { - if (!p) + if (!isValid()) return QTextBlock(); return QTextBlock(p, p->blockMap().next(n)); @@ -1504,7 +1504,7 @@ QTextBlock QTextBlock::next() const */ QTextBlock QTextBlock::previous() const { - if (!p) + if (!isValid()) return QTextBlock(); return QTextBlock(p, p->blockMap().previous(n)); -- cgit v0.12