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| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #include "qopengltexturecache_p.h" |
| #include "qopengltextureuploader_p.h" |
| #include <qmath.h> |
| #include <qopenglfunctions.h> |
| #include <private/qimagepixmapcleanuphooks_p.h> |
| #include <qpa/qplatformpixmap.h> |
| |
| #include <qtgui_tracepoints_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QOpenGLTextureCacheWrapper |
| { |
| public: |
| QOpenGLTextureCacheWrapper() |
| { |
| QImagePixmapCleanupHooks::instance()->addPlatformPixmapModificationHook(cleanupTexturesForPixmapData); |
| QImagePixmapCleanupHooks::instance()->addPlatformPixmapDestructionHook(cleanupTexturesForPixmapData); |
| QImagePixmapCleanupHooks::instance()->addImageHook(cleanupTexturesForCacheKey); |
| } |
| |
| ~QOpenGLTextureCacheWrapper() |
| { |
| QImagePixmapCleanupHooks::instance()->removePlatformPixmapModificationHook(cleanupTexturesForPixmapData); |
| QImagePixmapCleanupHooks::instance()->removePlatformPixmapDestructionHook(cleanupTexturesForPixmapData); |
| QImagePixmapCleanupHooks::instance()->removeImageHook(cleanupTexturesForCacheKey); |
| } |
| |
| QOpenGLTextureCache *cacheForContext(QOpenGLContext *context) { |
| QMutexLocker lock(&m_mutex); |
| return m_resource.value<QOpenGLTextureCache>(context); |
| } |
| |
| static void cleanupTexturesForCacheKey(qint64 key); |
| static void cleanupTexturesForPixmapData(QPlatformPixmap *pmd); |
| |
| private: |
| QOpenGLMultiGroupSharedResource m_resource; |
| QMutex m_mutex; |
| }; |
| |
| Q_GLOBAL_STATIC(QOpenGLTextureCacheWrapper, qt_texture_caches) |
| |
| QOpenGLTextureCache *QOpenGLTextureCache::cacheForContext(QOpenGLContext *context) |
| { |
| return qt_texture_caches()->cacheForContext(context); |
| } |
| |
| void QOpenGLTextureCacheWrapper::cleanupTexturesForCacheKey(qint64 key) |
| { |
| QList<QOpenGLSharedResource *> resources = qt_texture_caches()->m_resource.resources(); |
| for (QList<QOpenGLSharedResource *>::iterator it = resources.begin(); it != resources.end(); ++it) |
| static_cast<QOpenGLTextureCache *>(*it)->invalidate(key); |
| } |
| |
| void QOpenGLTextureCacheWrapper::cleanupTexturesForPixmapData(QPlatformPixmap *pmd) |
| { |
| cleanupTexturesForCacheKey(pmd->cacheKey()); |
| } |
| |
| QOpenGLTextureCache::QOpenGLTextureCache(QOpenGLContext *ctx) |
| : QOpenGLSharedResource(ctx->shareGroup()) |
| , m_cache(256 * 1024) // 256 MB cache |
| { |
| } |
| |
| QOpenGLTextureCache::~QOpenGLTextureCache() |
| { |
| } |
| |
| GLuint QOpenGLTextureCache::bindTexture(QOpenGLContext *context, const QPixmap &pixmap, QOpenGLTextureUploader::BindOptions options) |
| { |
| if (pixmap.isNull()) |
| return 0; |
| QMutexLocker locker(&m_mutex); |
| qint64 key = pixmap.cacheKey(); |
| |
| // A QPainter is active on the image - take the safe route and replace the texture. |
| if (!pixmap.paintingActive()) { |
| QOpenGLCachedTexture *entry = m_cache.object(key); |
| if (entry && entry->options() == options) { |
| context->functions()->glBindTexture(GL_TEXTURE_2D, entry->id()); |
| return entry->id(); |
| } |
| } |
| |
| GLuint id = bindTexture(context, key, pixmap.toImage(), options); |
| if (id > 0) |
| QImagePixmapCleanupHooks::enableCleanupHooks(pixmap); |
| |
| return id; |
| } |
| |
| GLuint QOpenGLTextureCache::bindTexture(QOpenGLContext *context, const QImage &image, QOpenGLTextureUploader::BindOptions options) |
| { |
| if (image.isNull()) |
| return 0; |
| QMutexLocker locker(&m_mutex); |
| qint64 key = image.cacheKey(); |
| |
| // A QPainter is active on the image - take the safe route and replace the texture. |
| if (!image.paintingActive()) { |
| QOpenGLCachedTexture *entry = m_cache.object(key); |
| if (entry && entry->options() == options) { |
| context->functions()->glBindTexture(GL_TEXTURE_2D, entry->id()); |
| return entry->id(); |
| } |
| } |
| |
| QImage img = image; |
| if (!context->functions()->hasOpenGLFeature(QOpenGLFunctions::NPOTTextures)) |
| options |= QOpenGLTextureUploader::PowerOfTwoBindOption; |
| |
| GLuint id = bindTexture(context, key, img, options); |
| if (id > 0) |
| QImagePixmapCleanupHooks::enableCleanupHooks(image); |
| |
| return id; |
| } |
| |
| GLuint QOpenGLTextureCache::bindTexture(QOpenGLContext *context, qint64 key, const QImage &image, QOpenGLTextureUploader::BindOptions options) |
| { |
| Q_TRACE_SCOPE(QOpenGLTextureCache_bindTexture, context, key, image, options); |
| |
| GLuint id; |
| QOpenGLFunctions *funcs = context->functions(); |
| funcs->glGenTextures(1, &id); |
| funcs->glBindTexture(GL_TEXTURE_2D, id); |
| |
| int cost = QOpenGLTextureUploader::textureImage(GL_TEXTURE_2D, image, options); |
| |
| m_cache.insert(key, new QOpenGLCachedTexture(id, options, context), cost / 1024); |
| |
| return id; |
| } |
| |
| void QOpenGLTextureCache::invalidate(qint64 key) |
| { |
| QMutexLocker locker(&m_mutex); |
| m_cache.remove(key); |
| } |
| |
| void QOpenGLTextureCache::invalidateResource() |
| { |
| m_cache.clear(); |
| } |
| |
| void QOpenGLTextureCache::freeResource(QOpenGLContext *) |
| { |
| Q_ASSERT(false); // the texture cache lives until the context group disappears |
| } |
| |
| static void freeTexture(QOpenGLFunctions *funcs, GLuint id) |
| { |
| funcs->glDeleteTextures(1, &id); |
| } |
| |
| QOpenGLCachedTexture::QOpenGLCachedTexture(GLuint id, QOpenGLTextureUploader::BindOptions options, QOpenGLContext *context) : m_options(options) |
| { |
| m_resource = new QOpenGLSharedResourceGuard(context, id, freeTexture); |
| } |
| |
| QT_END_NAMESPACE |