diff options
Diffstat (limited to 'src/opengl/qgl_x11.cpp')
| -rw-r--r-- | src/opengl/qgl_x11.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/opengl/qgl_x11.cpp b/src/opengl/qgl_x11.cpp index 631625b..43bdec7 100644 --- a/src/opengl/qgl_x11.cpp +++ b/src/opengl/qgl_x11.cpp @@ -52,6 +52,7 @@ #include "qdebug.h" #include <private/qfontengine_ft_p.h> #include <private/qt_x11_p.h> +#include <private/qpixmap_x11_p.h> #ifdef Q_OS_HPUX // for GLXPBuffer #include <private/qglpixelbuffer_p.h> @@ -81,6 +82,25 @@ extern const QX11Info *qt_x11Info(const QPaintDevice *pd); #define GLX_SAMPLES_ARB 100001 #endif +#ifndef GLX_EXT_texture_from_pixmap +#define GLX_TEXTURE_2D_BIT_EXT 0x00000002 +#define GLX_TEXTURE_RECTANGLE_BIT_EXT 0x00000004 +#define GLX_BIND_TO_TEXTURE_RGB_EXT 0x20D0 +#define GLX_BIND_TO_TEXTURE_RGBA_EXT 0x20D1 +#define GLX_BIND_TO_MIPMAP_TEXTURE_EXT 0x20D2 +#define GLX_BIND_TO_TEXTURE_TARGETS_EXT 0x20D3 +#define GLX_Y_INVERTED_EXT 0x20D4 +#define GLX_TEXTURE_FORMAT_EXT 0x20D5 +#define GLX_TEXTURE_TARGET_EXT 0x20D6 +#define GLX_MIPMAP_TEXTURE_EXT 0x20D7 +#define GLX_TEXTURE_FORMAT_NONE_EXT 0x20D8 +#define GLX_TEXTURE_FORMAT_RGB_EXT 0x20D9 +#define GLX_TEXTURE_FORMAT_RGBA_EXT 0x20DA +#define GLX_TEXTURE_2D_EXT 0x20DC +#define GLX_TEXTURE_RECTANGLE_EXT 0x20DD +#define GLX_FRONT_LEFT_EXT 0x20DE +#endif + /* The qt_gl_choose_cmap function is internal and used by QGLWidget::setContext() and GLX (not Windows). If the application can't find any sharable @@ -1516,4 +1536,124 @@ void QGLExtensions::init() } } + +typedef void (*qt_glXBindTexImageEXT)(Display*, GLXDrawable, int, const int*); +typedef void (*qt_glXReleaseTexImageEXT)(Display*, GLXDrawable, int); +static qt_glXBindTexImageEXT glXBindTexImageEXT = 0; +static qt_glXReleaseTexImageEXT glXReleaseTexImageEXT = 0; +static bool qt_resolved_texture_from_pixmap = false; + +QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pm, const qint64 key, bool canInvert) +{ + Q_Q(QGLContext); + + if (pm->data_ptr()->classId() != QPixmapData::X11Class) + return 0; + QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pm->data_ptr()); + const QX11Info *x11Info = qt_x11Info(pm); + + + // Check to see if we have NPOT texture support + // TODO: Use GLX_TEXTURE_RECTANGLE_EXT texture target on systems without npot textures + if ( !(QGLExtensions::glExtensions & QGLExtensions::NPOTTextures) && + !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)) + return 0; + + if (!qt_resolved_texture_from_pixmap) { + qt_resolved_texture_from_pixmap = true; + + QString glxExt = QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS)); + if (glxExt.contains(QLatin1String("GLX_EXT_texture_from_pixmap"))) { +#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4) + void *handle = dlopen(NULL, RTLD_LAZY); + if (handle) { + glXBindTexImageEXT = (qt_glXBindTexImageEXT) dlsym(handle, "glXBindTexImageEXT"); + glXReleaseTexImageEXT = (qt_glXReleaseTexImageEXT) dlsym(handle, "glXReleaseTexImageEXT"); + dlclose(handle); + } + if (!glXBindTexImageEXT) +#endif + { + extern const QString qt_gl_library_name(); + QLibrary lib(qt_gl_library_name()); + glXBindTexImageEXT = (qt_glXBindTexImageEXT) lib.resolve("glXBindTexImageEXT"); + glXReleaseTexImageEXT = (qt_glXReleaseTexImageEXT) lib.resolve("glXReleaseTexImageEXT"); + } + } + } + + if (!glXBindTexImageEXT) + return 0; + +#if !defined(GLX_VERSION_1_3) || defined(Q_OS_HPUX) + return 0; +#else + GLXFBConfig *configList = 0; + GLXFBConfig glxPixmapConfig; + int configCount = 0; + bool hasAlpha = pixmapData->hasAlphaChannel(); + + int configAttribs[] = { + hasAlpha ? GLX_BIND_TO_TEXTURE_RGBA_EXT : GLX_BIND_TO_TEXTURE_RGB_EXT, True, + GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT, + GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT, + // QGLContext::bindTexture() can't return an inverted texture, but QPainter::drawPixmap() can: + GLX_Y_INVERTED_EXT, canInvert ? GLX_DONT_CARE : False, + XNone +// GLX_BIND_TO_MIPMAP_TEXTURE_EXT, False, +// GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_1D_BIT_EXT or GLX_TEXTURE_2D_BIT_EXT or GLX_TEXTURE_RECTANGLE_BIT_EXT + }; + configList = glXChooseFBConfig(x11Info->display(), x11Info->screen(), configAttribs, &configCount); + if (!configList) + return 0; + glxPixmapConfig = configList[0]; + XFree(configList); + + GLXPixmap glxPixmap; + int pixmapAttribs[] = { + GLX_TEXTURE_FORMAT_EXT, hasAlpha ? GLX_TEXTURE_FORMAT_RGBA_EXT : GLX_TEXTURE_FORMAT_RGB_EXT, + GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT, + GLX_MIPMAP_TEXTURE_EXT, False, + XNone +// GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT or GLX_TEXTURE_FORMAT_RGB_EXT or GLX_TEXTURE_FORMAT_NONE_EXT, +// GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT or GLX_TEXTURE_RECTANGLE_EXT, +// GLX_MIPMAP_TEXTURE_EXT, True or False, + }; + + // Wrap the X Pixmap into a GLXPixmap: + glxPixmap = glXCreatePixmap(x11Info->display(), glxPixmapConfig, pixmapData->handle(), pixmapAttribs); + + if (!glxPixmap) + return 0; + + int yInverted; + glXGetFBConfigAttrib(x11Info->display(), glxPixmapConfig, GLX_Y_INVERTED_EXT, &yInverted); + + GLuint textureId; + glGenTextures(1, &textureId); + glBindTexture(GL_TEXTURE_2D, textureId); + glXBindTexImageEXT(x11Info->display(), glxPixmap, GLX_FRONT_LEFT_EXT, 0); + + glBindTexture(GL_TEXTURE_2D, textureId); + + QGLTexture *texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, canInvert, yInverted); + texture->boundPixmap = glxPixmap; + + // We assume the cost of bound pixmaps is zero + QGLTextureCache::instance()->insert(q, key, texture, 0); + + return texture; +#endif //!defined(GLX_VERSION_1_3) || defined(Q_OS_HPUX) +} + +void QGLTexture::deleteBoundPixmap() +{ + if (boundPixmap) { + glXReleaseTexImageEXT(QX11Info::display(), boundPixmap, GLX_FRONT_LEFT_EXT); + glXDestroyPixmap(QX11Info::display(), boundPixmap); + boundPixmap = 0; + } +} + + QT_END_NAMESPACE |