diff options
Diffstat (limited to 'src/opengl')
| -rw-r--r-- | src/opengl/qpaintengine_opengl.cpp | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp index 71ed690..0f33cab 100644 --- a/src/opengl/qpaintengine_opengl.cpp +++ b/src/opengl/qpaintengine_opengl.cpp @@ -4536,11 +4536,14 @@ struct QGLGlyphCoord { }; struct QGLFontTexture { + QGLFontTexture() : data(0) { } + ~QGLFontTexture() { free(data); } int x_offset; // glyph offset within the int y_offset; GLuint texture; int width; int height; + uchar *data; }; typedef QHash<glyph_t, QGLGlyphCoord*> QGLGlyphHash; @@ -4563,7 +4566,7 @@ public: QGLGlyphCoord *lookup(QFontEngine *, glyph_t); void cacheGlyphs(QGLContext *, QFontEngine *, glyph_t *glyphs, int numGlyphs); void cleanCache(); - void allocTexture(int width, int height, GLuint texture); + void allocTexture(QGLFontTexture *); public slots: void cleanupContext(const QGLContext *); @@ -4681,19 +4684,18 @@ void QGLGlyphCache::cleanCache() qt_context_cache.clear(); } -void QGLGlyphCache::allocTexture(int width, int height, GLuint texture) +void QGLGlyphCache::allocTexture(QGLFontTexture *font_tex) { - uchar *tex_data = (uchar *) malloc(width*height*2); - memset(tex_data, 0, width*height*2); - glBindTexture(GL_TEXTURE_2D, texture); + font_tex->data = (uchar *) malloc(font_tex->width*font_tex->height*2); + memset(font_tex->data, 0, font_tex->width*font_tex->height*2); + glBindTexture(GL_TEXTURE_2D, font_tex->texture); #ifndef QT_OPENGL_ES glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8_ALPHA8, - width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data); + font_tex->width, font_tex->height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, font_tex->data); #else glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, - width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data); + font_tex->width, font_tex->height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, font_tex->data); #endif - free(tex_data); } #if 0 @@ -4777,13 +4779,13 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine, Q_ASSERT(max_tex_size > 0); if (tex_width > max_tex_size) tex_width = max_tex_size; - allocTexture(tex_width, tex_height, font_texture); font_tex = new QGLFontTexture; font_tex->texture = font_texture; font_tex->x_offset = x_margin; font_tex->y_offset = y_margin; font_tex->width = tex_width; font_tex->height = tex_height; + allocTexture(font_tex); // qDebug() << "new font tex - width:" << tex_width << "height:"<< tex_height // << hex << "tex id:" << font_tex->texture << "key:" << font_key << "num cached:" << qt_font_textures.size(); qt_font_textures.insert(font_key, font_tex); @@ -4806,21 +4808,19 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine, font_tex->y_offset += strip_height; if (font_tex->y_offset >= font_tex->height) { // get hold of the old font texture - uchar *old_tex_data = (uchar *) malloc(font_tex->width*font_tex->height*2); + uchar *old_tex_data = font_tex->data; int old_tex_height = font_tex->height; -#ifndef QT_OPENGL_ES - glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data); -#endif // realloc a larger texture glDeleteTextures(1, &font_tex->texture); glGenTextures(1, &font_tex->texture); font_tex->height = qt_next_power_of_two(font_tex->height + strip_height); - allocTexture(font_tex->width, font_tex->height, font_tex->texture); + allocTexture(font_tex); // write back the old texture data glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, font_tex->width, old_tex_height, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data); + memcpy(font_tex->data, old_tex_data, font_tex->width*old_tex_height*2); free(old_tex_data); // update the texture coords and the y offset for the existing glyphs in @@ -4868,8 +4868,10 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine, } #endif glyph_im = glyph_im.convertToFormat(QImage::Format_Indexed8); + int cacheLineStart = (font_tex->x_offset + font_tex->y_offset*font_tex->width)*2; for (int y=0; y<glyph_im.height(); ++y) { uchar *s = (uchar *) glyph_im.scanLine(y); + int lineStart = idx; for (int x=0; x<glyph_im.width(); ++x) { uchar alpha = is8BitGray ? *s : qAlpha(glyph_im.color(*s)); tex_data[idx] = alpha; @@ -4879,6 +4881,9 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine, } if (glyph_im.width()%2 != 0) idx += 2; + // update cache + memcpy(font_tex->data+cacheLineStart, tex_data+lineStart, glyph_width*2); + cacheLineStart += font_tex->width*2; } glTexSubImage2D(GL_TEXTURE_2D, 0, font_tex->x_offset, font_tex->y_offset, glyph_width, glyph_im.height(), @@ -4950,7 +4955,7 @@ void QOpenGLPaintEngine::drawStaticTextItem(QStaticTextItem *textItem) glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); bool antialias = !(textItem->fontEngine()->fontDef.styleStrategy & QFont::NoAntialias) - && (d->matrix.type() > QTransform::TxTranslate); + && (d->matrix.type() > QTransform::TxTranslate); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, antialias ? GL_LINEAR : GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, antialias ? GL_LINEAR : GL_NEAREST); |