OpenTTD Source  1.11.0-beta2
VideoDriver_SDL_OpenGL Class Reference

The OpenGL video driver for windows. More...

#include <sdl2_opengl_v.h>

Inheritance diagram for VideoDriver_SDL_OpenGL:
VideoDriver_SDL_Base VideoDriver Driver

Public Member Functions

const char * Start (const StringList &param) override
 Start this driver. More...
 
void Stop () override
 Stop this driver.
 
bool HasEfficient8Bpp () const override
 Has this video driver an efficient code path for palette animated 8-bpp sprites? More...
 
bool UseSystemCursor () override
 Get whether the mouse cursor is drawn by the video driver. More...
 
void ClearSystemSprites () override
 Clear all cached sprites.
 
bool HasAnimBuffer () override
 Does this video driver support a separate animation buffer in addition to the colour buffer? More...
 
uint8 * GetAnimBuffer () override
 Get a pointer to the animation buffer of the video back-end. More...
 
const char * GetName () const override
 Get the name of this driver. More...
 
- Public Member Functions inherited from VideoDriver_SDL_Base
const char * Start (const StringList &param) override
 Start this driver. More...
 
void Stop () override
 Stop this driver.
 
void MakeDirty (int left, int top, int width, int height) override
 Mark a particular area dirty. More...
 
void MainLoop () override
 Perform the actual drawing.
 
bool ChangeResolution (int w, int h) override
 Change the resolution of the window. More...
 
bool ToggleFullscreen (bool fullscreen) override
 Change the full screen setting. More...
 
bool AfterBlitterChange () override
 Callback invoked after the blitter was changed. More...
 
void AcquireBlitterLock () override
 Acquire any lock(s) required to be held when changing blitters. More...
 
void ReleaseBlitterLock () override
 Release any lock(s) required to be held when changing blitters. More...
 
bool ClaimMousePointer () override
 
void EditBoxGainedFocus () override
 This is called to indicate that an edit box has gained focus, text input mode should be enabled.
 
void EditBoxLostFocus () override
 This is called to indicate that an edit box has lost focus, text input mode should be disabled.
 
const char * GetName () const override
 Get the name of this driver. More...
 
- Public Member Functions inherited from VideoDriver
virtual bool HasGUI () const
 Whether the driver has a graphical user interface with the end user. More...
 
virtual ZoomLevel GetSuggestedUIZoom ()
 Get a suggested default GUI zoom taking screen DPI into account.
 

Protected Member Functions

bool AllocateBackingStore (int w, int h, bool force=false) override
 (Re-)create the backing store.
 
void * GetVideoPointer () override
 Get a pointer to the video buffer.
 
void ReleaseVideoPointer () override
 Hand video buffer back to the painting backend.
 
void Paint () override
 Paint the window.
 
bool CreateMainWindow (uint w, uint h, uint flags) override
 Create the main window.
 
void PaintThread () override
 Thread function for threaded drawing.
 
- Protected Member Functions inherited from VideoDriver_SDL_Base
Dimension GetScreenSize () const override
 Get the resolution of the main screen.
 
void InputLoop () override
 Handle input logic, is CTRL pressed, should we fast-forward, etc.
 
bool LockVideoBuffer () override
 Make sure the video buffer is ready for drawing. More...
 
void UnlockVideoBuffer () override
 Unlock a previously locked video buffer.
 
void CheckPaletteAnim () override
 Process any pending palette animation.
 
bool PollEvent () override
 Process a single system event. More...
 
void ClientSizeChanged (int w, int h, bool force)
 Indicate to the driver the client-side might have changed.
 
- Protected Member Functions inherited from VideoDriver
virtual float GetDPIScale ()
 Get DPI scaling factor of the screen OTTD is displayed on. More...
 
void UpdateAutoResolution ()
 Apply resolution auto-detection and clamp to sensible defaults.
 
bool Tick ()
 Run the game for a single tick, processing boththe game-tick and draw-tick. More...
 
void SleepTillNextTick ()
 Sleep till the next tick is about to happen.
 
std::chrono::steady_clock::duration GetGameInterval ()
 
std::chrono::steady_clock::duration GetDrawInterval ()
 

Private Member Functions

const char * AllocateContext ()
 
void DestroyContext ()
 

Private Attributes

void * gl_context
 OpenGL context.
 
uint8 * anim_buffer
 Animation buffer from OpenGL back-end.
 

Additional Inherited Members

- Public Types inherited from Driver
enum  Type {
  DT_BEGIN = 0, DT_MUSIC = 0, DT_SOUND, DT_VIDEO,
  DT_END
}
 The type of driver. More...
 
- Static Public Member Functions inherited from VideoDriver
static VideoDriverGetInstance ()
 Get the currently active instance of the video driver.
 
- Protected Attributes inherited from VideoDriver_SDL_Base
struct SDL_Window * sdl_window
 Main SDL window.
 
Palette local_palette
 Copy of _cur_palette.
 
bool draw_threaded
 Whether the drawing is/may be done in a separate thread.
 
std::recursive_mutex * draw_mutex = nullptr
 Mutex to keep the access to the shared memory controlled.
 
std::condition_variable_any * draw_signal = nullptr
 Signal to draw the next frame.
 
volatile bool draw_continue
 Should we keep continue drawing?
 
bool buffer_locked
 Video buffer was locked by the main thread.
 
Rect dirty_rect
 Rectangle encompassing the dirty area of the video buffer.
 
- Protected Attributes inherited from VideoDriver
const uint ALLOWED_DRIFT = 5
 How many times videodriver can miss deadlines without it being overly compensated.
 
std::chrono::steady_clock::time_point next_game_tick
 
std::chrono::steady_clock::time_point next_draw_tick
 
bool fast_forward_key_pressed
 The fast-forward key is being pressed.
 
bool fast_forward_via_key
 The fast-forward was enabled by key press.
 

Detailed Description

The OpenGL video driver for windows.

Definition at line 13 of file sdl2_opengl_v.h.

Member Function Documentation

◆ GetAnimBuffer()

uint8* VideoDriver_SDL_OpenGL::GetAnimBuffer ( )
inlineoverridevirtual

Get a pointer to the animation buffer of the video back-end.

Returns
Pointer to the buffer or nullptr if no animation buffer is supported.

Reimplemented from VideoDriver.

Definition at line 28 of file sdl2_opengl_v.h.

References anim_buffer.

◆ GetName()

const char* VideoDriver_SDL_OpenGL::GetName ( ) const
inlineoverridevirtual

Get the name of this driver.

Returns
The name of the driver.

Implements Driver.

Definition at line 30 of file sdl2_opengl_v.h.

◆ HasAnimBuffer()

bool VideoDriver_SDL_OpenGL::HasAnimBuffer ( )
inlineoverridevirtual

Does this video driver support a separate animation buffer in addition to the colour buffer?

Returns
True if a separate animation buffer is supported.

Reimplemented from VideoDriver.

Definition at line 27 of file sdl2_opengl_v.h.

◆ HasEfficient8Bpp()

bool VideoDriver_SDL_OpenGL::HasEfficient8Bpp ( ) const
inlineoverridevirtual

Has this video driver an efficient code path for palette animated 8-bpp sprites?

Returns
True if the driver has an efficient code path for 8-bpp.

Reimplemented from VideoDriver.

Definition at line 21 of file sdl2_opengl_v.h.

◆ Start()

const char * VideoDriver_SDL_OpenGL::Start ( const StringList parm)
overridevirtual

Start this driver.

Parameters
parmParameters passed to the driver.
Returns
nullptr if everything went okay, otherwise an error message.

Implements Driver.

Definition at line 56 of file sdl2_opengl_v.cpp.

References VideoDriver_SDL_Base::ClientSizeChanged(), VideoDriver_SDL_Base::draw_threaded, error(), GetDriverParamBool(), VideoDriver_SDL_Base::sdl_window, VideoDriver_SDL_Base::Start(), and Stop().

◆ UseSystemCursor()

bool VideoDriver_SDL_OpenGL::UseSystemCursor ( )
inlineoverridevirtual

Get whether the mouse cursor is drawn by the video driver.

Returns
True if cursor drawing is done by the video driver.

Reimplemented from VideoDriver.

Definition at line 23 of file sdl2_opengl_v.h.


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