opengl es 2.0 framebuffer depth textures

OpenGL framebuffer objects and pbuffers (see QGLPixelBuffer) can both be used to render to offscreen surfaces, but there are a number of advantages with using framebuffer objects instead of pbuffers: It is important to have a current GL context when creating a QGLFramebufferObject, otherwise initialization will fail. By default, the QGLFramebufferObject class generates a 2D GL texture (using the GL_TEXTURE_2D target), which is used as the internal rendering target. This surface can be bound and used as a regular texture in your own GL drawing code. In addition it provides a rendering surface that can be painted on with a QPainter, rendered to using native GL calls, or both. The QGLFramebufferObject class encapsulates an OpenGL framebuffer object, defined by the GL_EXT_framebuffer_object extension. The QGLFramebufferObject class encapsulates an OpenGL framebuffer object.

1 protected function inherited from QPaintDevice.

Metric ( PaintDeviceMetric metric ) const Reimplemented Protected Functions virtual int

13 public functions inherited from QPaintDeviceīlitFramebuffer ( QGLFramebufferObject * target, const QRect & targetRect, QGLFramebufferObject * source, const QRect & sourceRect, GLbitfield buffers = GL_COLOR_BUFFER_BIT, GLenum filter = GL_NEAREST ).

Reimplemented Public Functions virtual QPaintEngine * QGLFramebufferObject ( const QSize & size, Attachment attachment, GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA8 )ĭrawTexture ( const QRectF & target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D )ĭrawTexture ( const QPointF & point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D ) QGLFramebufferObject ( int width, int height, Attachment attachment, GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA8 )

QGLFramebufferObject ( int width, int height, const QGLFramebufferObjectFormat & format ) QGLFramebufferObject ( const QSize & size, const QGLFramebufferObjectFormat & format ) QGLFramebufferObject ( int width, int height, GLenum target = GL_TEXTURE_2D )

QGLFramebufferObject ( const QSize & size, GLenum target = GL_TEXTURE_2D ) List of all members, including inherited membersĪttachment.

Opengl es 2.0 framebuffer depth textures