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Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | Friends | List of all members
GraphicsPipe Class Referenceabstract

An object to create GraphicsOutputs that share a particular 3-D API. More...

`#include "graphicsPipe.h"`

Inheritance diagram for GraphicsPipe:

## Public Types
enum | BufferCreationFlags { BF_refuse_parasite = 0x0001 , BF_require_parasite = 0x0002 , BF_refuse_window = 0x0004 , BF_require_window = 0x0008 , BF_require_callback_window = 0x0010 , BF_can_bind_color = 0x0040 , BF_can_bind_every = 0x0080 , BF_resizeable = 0x0100 , BF_size_track_host = 0x0200 , BF_rtt_cumulative = 0x0400 , BF_fb_props_optional = 0x0800 , BF_size_square = 0x1000 , BF_size_power_2 = 0x2000 , BF_can_bind_layered = 0x4000 }
enum | OutputTypes { OT_window = 0x0001 , OT_fullscreen_window = 0x0002 , OT_buffer = 0x0004 , OT_texture_buffer = 0x0008 }
enum | PreferredWindowThread { PWT_app , PWT_draw }

## Public Member Functions
virtual TypeHandle | force_init_type ()
GraphicsDevice * | get_device () const
| Returns a pointer to device object.
int | get_display_height () const
DisplayInformation * | get_display_information ()
int | get_display_width () const
PN_stdfloat | get_display_zoom () const
virtual std::string | get_interface_name () const =0
virtual PreferredWindowThread | get_preferred_window_thread () const
| Returns an indication of the thread in which this GraphicsPipe requires its window processing to be performed: typically either the app thread (e.g.
int | get_supported_types () const
| Returns the mask of bits that represents the kinds of GraphicsOutput objects this pipe might be able to successfully create.
virtual TypeHandle | get_type () const
bool | is_valid () const
| Returns false if this pipe is known to be invalid, meaning that an attempt to create a GraphicsWindow with the pipe will certainly fail.
virtual void | lookup_cpu_data ()
| Looks up the detailed CPU information and stores it in _display_information, if supported by the OS.
virtual | PT (GraphicsDevice) make_device(void *scrn
virtual | PT (GraphicsStateGuardian) make_callback_gsg(GraphicsEngine *engine)
bool | supports_type (int flags) const
| A convenience function to ask if a particular type or types of GraphicsObjects are supported.
Public Member Functions inherited from TypedReferenceCount
| TypedReferenceCount (const TypedReferenceCount &copy)
void | operator= (const TypedReferenceCount &copy)
Public Member Functions inherited from TypedObject
| TypedObject (const TypedObject &copy)=default
TypedObject * | as_typed_object ()
| Returns the object, upcast (if necessary) to a TypedObject pointer.
const TypedObject * | as_typed_object () const
| Returns the object, upcast (if necessary) to a TypedObject pointer.
int | get_best_parent_from_Set (const std::set< int > &) const
int | get_type_index () const
| Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool | is_exact_type (TypeHandle handle) const
| Returns true if the current object is the indicated type exactly.
bool | is_of_type (TypeHandle handle) const
| Returns true if the current object is or derives from the indicated type.
TypedObject & | operator= (const TypedObject &copy)=default
Public Member Functions inherited from MemoryBase
void | operator delete (void *, void *)
void | operator delete (void *ptr)
void | operator delete[] (void *, void *)
void | operator delete[] (void *ptr)
void * | operator new (size_t size)
void * | operator new (size_t size, void *ptr)
void * | operator new[] (size_t size)
void * | operator new[] (size_t size, void *ptr)
Public Member Functions inherited from ReferenceCount
int | get_ref_count () const
WeakReferenceList * | get_weak_list () const
| Returns the WeakReferenceList associated with this ReferenceCount object.
bool | has_weak_list () const
| Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise.
void | local_object ()
| This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack.
void | ref () const
| Explicitly increments the reference count.
bool | ref_if_nonzero () const
| Atomically increases the reference count of this object if it is not zero.
bool | test_ref_count_integrity () const
| Does some easy checks to make sure that the reference count isn't completely bogus.
bool | test_ref_count_nonzero () const
| Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
virtual bool | unref () const
| Explicitly decrements the reference count.
bool | unref_if_one () const
| Atomically decreases the reference count of this object if it is one.
WeakReferenceList * | weak_ref ()
| Adds the indicated PointerToVoid as a weak reference to this object.
void | weak_unref ()
| Removes the indicated PointerToVoid as a weak reference to this object.

## Static Public Member Functions
static TypeHandle | get_class_type ()
static void | init_type ()
Static Public Member Functions inherited from TypedReferenceCount
static TypeHandle | get_class_type ()
static void | init_type ()
Static Public Member Functions inherited from TypedObject
static TypeHandle | get_class_type ()
static void | init_type ()
| This function is declared non-inline to work around a compiler bug in g++ 2.96.
Static Public Member Functions inherited from ReferenceCount
static TypeHandle | get_class_type ()
static void | init_type ()

## Public Attributes
| get_display_height
| Returns the height of the entire display, if it is known.
| get_display_information
| Gets the pipe's DisplayInformation.
| get_display_width
| Returns the width of the entire display, if it is known.
| get_display_zoom
| Returns the display zoom factor configured in the operating system.
| get_interface_name
Public Attributes inherited from TypedObject
| get_type
Public Attributes inherited from ReferenceCount
| get_ref_count
| Returns the current reference count.

## Friends
class | GraphicsEngine

## Detailed Description

An object to create GraphicsOutputs that share a particular 3-D API.

Normally, there will only be one GraphicsPipe in an application, although it is possible to have multiple of these at once if there are multiple different API's available in the same machine.

Often, the GraphicsPipe corresponds to a physical output device, hence the term "pipe", but this is not necessarily the case.

The GraphicsPipe is used by the GraphicsEngine object to create and destroy windows; it keeps ownership of the windows it creates.

M. Asad added new/interim functionality where GraphicsPipe now contains a device interface to directx/opengl which will be used to handle multiple windows from same device.

Definition at line 52 of file graphicsPipe.h.

## Member Enumeration Documentation

## ◆ BufferCreationFlags

enum GraphicsPipe::BufferCreationFlags

Definition at line 68 of file graphicsPipe.h.

## ◆ OutputTypes

enum GraphicsPipe::OutputTypes

Definition at line 61 of file graphicsPipe.h.

## ◆ PreferredWindowThread

enum GraphicsPipe::PreferredWindowThread

Definition at line 108 of file graphicsPipe.h.

## Constructor & Destructor Documentation

## ◆ ~GraphicsPipe()

GraphicsPipe::~GraphicsPipe | ( |  | ) |
| virtual

Definition at line 205 of file graphicsPipe.cxx.

## Member Function Documentation

## ◆ force_init_type()

virtual TypeHandle GraphicsPipe::force_init_type | ( |  | ) |
| inline virtual

Reimplemented from TypedReferenceCount.

Definition at line 159 of file graphicsPipe.h.

## ◆ get_class_type()

static TypeHandle GraphicsPipe::get_class_type | ( |  | ) |
| inline static

Definition at line 148 of file graphicsPipe.h.

## ◆ get_device()

GraphicsDevice * GraphicsPipe::get_device | ( |  | ) | const
| inline

Returns a pointer to device object.

Definition at line 80 of file graphicsPipe.I.

## ◆ get_interface_name()

virtual std::string GraphicsPipe::get_interface_name | ( |  | ) | const
| pure virtual

Implemented in AndroidGraphicsPipe, eglGraphicsPipe, glxGraphicsPipe, osxGraphicsPipe, wdxGraphicsPipe9, and wglGraphicsPipe.

## ◆ get_preferred_window_thread()

GraphicsPipe::PreferredWindowThread GraphicsPipe::get_preferred_window_thread | ( |  | ) | const
| virtual

Returns an indication of the thread in which this GraphicsPipe requires its window processing to be performed: typically either the app thread (e.g.

X) or the draw thread (Windows).

Reimplemented in AndroidGraphicsPipe, CocoaGraphicsPipe, IPhoneGraphicsPipe, osxGraphicsPipe, and x11GraphicsPipe.

Definition at line 216 of file graphicsPipe.cxx.

## ◆ get_supported_types()

int GraphicsPipe::get_supported_types | ( |  | ) | const
| inline

Returns the mask of bits that represents the kinds of GraphicsOutput objects this pipe might be able to successfully create.

The return value is the union of bits in GraphicsPipe::OutputTypes that represents the set of GraphicsOutput types.

A 1 bit in a particular position is not a guarantee of success, but a 0 bit is a guarantee of failure.

Definition at line 37 of file graphicsPipe.I.

## ◆ get_type()

virtual TypeHandle GraphicsPipe::get_type | ( |  | ) | const
| inline virtual

Reimplemented from TypedReferenceCount.

Definition at line 156 of file graphicsPipe.h.

## ◆ init_type()

static void GraphicsPipe::init_type | ( |  | ) |
| inline static

Definition at line 151 of file graphicsPipe.h.

## ◆ is_valid()

bool GraphicsPipe::is_valid | ( |  | ) | const
| inline

Returns false if this pipe is known to be invalid, meaning that an attempt to create a GraphicsWindow with the pipe will certainly fail.

Returns true if the pipe is probably valid (is this case, an attempt to create a GraphicsWindow should succeed, but might still fail).

Use the GraphicsEngine class to create a GraphicsWindow on a particular pipe.

Definition at line 23 of file graphicsPipe.I.

## ◆ lookup_cpu_data()

void GraphicsPipe::lookup_cpu_data | ( |  | ) |
| virtual

Looks up the detailed CPU information and stores it in _display_information, if supported by the OS.

This may take a second or two.

Reimplemented in WinGraphicsPipe.

Definition at line 316 of file graphicsPipe.cxx.

## ◆ supports_type()

bool GraphicsPipe::supports_type | ( | int | flags | ) | const
| inline

A convenience function to ask if a particular type or types of GraphicsObjects are supported.

The parameter is a union of one or more bits defined in GrpahicsPipe::OutputTypes.

Returns true if all of the requested types are listed in the supported_types mask, false if any one of them is not. This is not a guarantee that the indicated output type will successfully be created when it is attempted.

Definition at line 52 of file graphicsPipe.I.

## Friends And Related Symbol Documentation

## ◆ GraphicsEngine

friend class GraphicsEngine
| friend

Definition at line 163 of file graphicsPipe.h.

## Member Data Documentation

## ◆ get_display_height

int GraphicsPipe::get_display_height
| inline

Returns the height of the entire display, if it is known.

This may return 0. See the caveats for get_display_width().

Definition at line 96 of file graphicsPipe.h.

Referenced by x11GraphicsWindow::set_properties_now().

## ◆ get_display_information

DisplayInformation * GraphicsPipe::get_display_information

Gets the pipe's DisplayInformation.

Definition at line 100 of file graphicsPipe.h.

## ◆ get_display_width

int GraphicsPipe::get_display_width
| inline

Returns the width of the entire display, if it is known.

This may return 0. This is not a guarantee that windows (particularly fullscreen windows) may not be created larger than this width, but it is intended to provide a hint to the application.

Definition at line 95 of file graphicsPipe.h.

Referenced by x11GraphicsWindow::set_properties_now().

## ◆ get_display_zoom

PN_stdfloat GraphicsPipe::get_display_zoom

Returns the display zoom factor configured in the operating system.

If the operating system automatically scales windows to match the DPI (such as when dpi-aware is set to false), this will be 1.0. Otherwise, this will be set to a value approximating the density of the monitor divided by the standard density of the operating system (usually 96), yielding a value like 1.5 or 2.0.

Since
  1.10.8

Definition at line 97 of file graphicsPipe.h.

## ◆ get_interface_name

GraphicsPipe::get_interface_name

Definition at line 105 of file graphicsPipe.h.

The documentation for this class was generated from the following files:

- panda/src/display/graphicsPipe.h
- panda/src/display/graphicsPipe.cxx
- panda/src/display/graphicsPipe.I