diff options
Diffstat (limited to 'src/opengl/qglframebufferobject.cpp')
| -rw-r--r-- | src/opengl/qglframebufferobject.cpp | 97 |
1 files changed, 54 insertions, 43 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp index 427aab3..8e97edf 100644 --- a/src/opengl/qglframebufferobject.cpp +++ b/src/opengl/qglframebufferobject.cpp @@ -97,7 +97,7 @@ public: \i \link setSamples() Number of samples per pixels.\endlink \i \link setAttachment() Depth and/or stencil attachments.\endlink \i \link setTextureTarget() Texture target.\endlink - \i \link setInternalFormat() Internal format.\endlink + \i \link setInternalTextureFormat() Internal texture format.\endlink \endlist Note that the desired attachments or number of samples per pixels might not @@ -109,38 +109,28 @@ public: */ /*! - Creates a QGLFramebufferObjectFormat object with properties specifying + Creates a QGLFramebufferObjectFormat object for specifying the format of an OpenGL framebuffer object. - A multisample framebuffer object is specified by setting \a samples - to a value different from zero. If the desired amount of samples per pixel is - not supported by the hardware then the maximum number of samples per pixel - will be used. Note that multisample framebuffer objects can not be bound as - textures. Also, the \c{GL_EXT_framebuffer_multisample} extension is required - to create a framebuffer with more than one sample per pixel. + By default the format specifies a non-multisample framebuffer object with no + attachments, texture target \c GL_TEXTURE_2D, and internal format \c GL_RGBA8. - For multisample framebuffer objects a color render buffer is created, - otherwise a texture with the texture target \a target is created. - The color render buffer or texture will have the internal format - \a internalFormat, and will be bound to the \c GL_COLOR_ATTACHMENT0 - attachment in the framebuffer object. - - The \a attachment parameter describes the depth/stencil buffer - configuration. - - \sa samples(), attachment(), target(), internalFormat() + \sa samples(), attachment(), target(), internalTextureFormat() */ -QGLFramebufferObjectFormat::QGLFramebufferObjectFormat(int samples, - QGLFramebufferObject::Attachment attachment, - GLenum target, - GLenum internalFormat) +#ifndef QT_OPENGL_ES +#define DEFAULT_FORMAT GL_RGBA8 +#else +#define DEFAULT_FORMAT GL_RGBA +#endif + +QGLFramebufferObjectFormat::QGLFramebufferObjectFormat() { d = new QGLFramebufferObjectFormatPrivate; - d->samples = samples; - d->attachment = attachment; - d->target = target; - d->internal_format = internalFormat; + d->samples = 0; + d->attachment = QGLFramebufferObject::NoAttachment; + d->target = GL_TEXTURE_2D; + d->internal_format = DEFAULT_FORMAT; } /*! @@ -176,6 +166,12 @@ QGLFramebufferObjectFormat::~QGLFramebufferObjectFormat() to \a samples. A sample count of 0 represents a regular non-multisample framebuffer object. + If the desired amount of samples per pixel is not supported by the hardware + then the maximum number of samples per pixel will be used. Note that + multisample framebuffer objects can not be bound as textures. Also, the + \c{GL_EXT_framebuffer_multisample} extension is required to create a + framebuffer with more than one sample per pixel. + \sa samples() */ void QGLFramebufferObjectFormat::setSamples(int samples) @@ -195,7 +191,7 @@ int QGLFramebufferObjectFormat::samples() const } /*! - Sets the attachments a framebuffer object should have to \a attachment. + Sets the attachment configuration of a framebuffer object to \a attachment. \sa attachment() */ @@ -238,27 +234,42 @@ GLenum QGLFramebufferObjectFormat::textureTarget() const } /*! - Sets the internal format of a framebuffer object's texture or multisample - framebuffer object's color buffer to \a internalFormat. + Sets the internal format of a framebuffer object's texture or + multisample framebuffer object's color buffer to + \a internalTextureFormat. - \sa internalFormat() + \sa internalTextureFormat() */ -void QGLFramebufferObjectFormat::setInternalFormat(GLenum internalFormat) +void QGLFramebufferObjectFormat::setInternalTextureFormat(GLenum internalTextureFormat) { - d->internal_format = internalFormat; + d->internal_format = internalTextureFormat; } /*! Returns the internal format of a framebuffer object's texture or multisample framebuffer object's color buffer. - \sa setInternalFormat() + \sa setInternalTextureFormat() */ -GLenum QGLFramebufferObjectFormat::internalFormat() const +GLenum QGLFramebufferObjectFormat::internalTextureFormat() const { return d->internal_format; } +#ifdef Q_MAC_COMPAT_GL_FUNCTIONS +/*! \internal */ +void QGLFramebufferObjectFormat::setTextureTarget(QMacCompatGLenum target) +{ + d->target = target; +} + +/*! \internal */ +void QGLFramebufferObjectFormat::setInternalTextureFormat(QMacCompatGLenum internalTextureFormat) +{ + d->internal_format = internalTextureFormat; +} +#endif + class QGLFramebufferObjectPrivate { public: @@ -469,7 +480,7 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At format.setTextureTarget(target); format.setSamples(int(samples)); format.setAttachment(fbo_attachment); - format.setInternalFormat(internal_format); + format.setInternalTextureFormat(internal_format); } /*! @@ -526,6 +537,12 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At the constructors that take a QGLFramebufferObject parameter, and set the QGLFramebufferObject::samples() property to a non-zero value. + For multisample framebuffer objects a color render buffer is created, + otherwise a texture with the specified texture target is created. + The color render buffer or texture will have the specified internal + format, and will be bound to the \c GL_COLOR_ATTACHMENT0 + attachment in the framebuffer object. + If you want to use a framebuffer object with multisampling enabled as a texture, you first need to copy from it to a regular framebuffer object using QGLContext::blitFramebuffer(). @@ -579,12 +596,6 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At \sa size(), texture(), attachment() */ -#ifndef QT_OPENGL_ES -#define DEFAULT_FORMAT GL_RGBA8 -#else -#define DEFAULT_FORMAT GL_RGBA -#endif - QGLFramebufferObject::QGLFramebufferObject(const QSize &size, GLenum target) : d_ptr(new QGLFramebufferObjectPrivate) { @@ -626,7 +637,7 @@ QGLFramebufferObject::QGLFramebufferObject(const QSize &size, const QGLFramebuff : d_ptr(new QGLFramebufferObjectPrivate) { Q_D(QGLFramebufferObject); - d->init(size, format.attachment(), format.textureTarget(), format.internalFormat(), format.samples()); + d->init(size, format.attachment(), format.textureTarget(), format.internalTextureFormat(), format.samples()); } /*! \overload @@ -639,7 +650,7 @@ QGLFramebufferObject::QGLFramebufferObject(int width, int height, const QGLFrame : d_ptr(new QGLFramebufferObjectPrivate) { Q_D(QGLFramebufferObject); - d->init(QSize(width, height), format.attachment(), format.textureTarget(), format.internalFormat(), format.samples()); + d->init(QSize(width, height), format.attachment(), format.textureTarget(), format.internalTextureFormat(), format.samples()); } #ifdef Q_MAC_COMPAT_GL_FUNCTIONS |