| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #if SDL_VIDEO_DRIVER_HAIKU |
| |
| #include "SDL_bframebuffer.h" |
| |
| #include <AppKit.h> |
| #include <InterfaceKit.h> |
| #include "SDL_bmodes.h" |
| #include "SDL_BWin.h" |
| |
| #include "../../main/haiku/SDL_BApp.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| int32 BE_UpdateOnce(SDL_Window *window); |
| |
| static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) { |
| return ((SDL_BWin*)(window->driverdata)); |
| } |
| |
| static SDL_INLINE SDL_BApp *_GetBeApp() { |
| return ((SDL_BApp*)be_app); |
| } |
| |
| int BE_CreateWindowFramebuffer(_THIS, SDL_Window * window, |
| Uint32 * format, |
| void ** pixels, int *pitch) { |
| SDL_BWin *bwin = _ToBeWin(window); |
| BScreen bscreen; |
| if(!bscreen.IsValid()) { |
| return -1; |
| } |
| |
| while(!bwin->Connected()) { snooze(100); } |
| |
| /* Make sure we have exclusive access to frame buffer data */ |
| bwin->LockBuffer(); |
| |
| /* format */ |
| display_mode bmode; |
| bscreen.GetMode(&bmode); |
| int32 bpp = BE_ColorSpaceToBitsPerPixel(bmode.space); |
| *format = BE_BPPToSDLPxFormat(bpp); |
| |
| /* Create the new bitmap object */ |
| BBitmap *bitmap = bwin->GetBitmap(); |
| |
| if(bitmap) { |
| delete bitmap; |
| } |
| bitmap = new BBitmap(bwin->Bounds(), (color_space)bmode.space, |
| false, /* Views not accepted */ |
| true); /* Contiguous memory required */ |
| |
| if(bitmap->InitCheck() != B_OK) { |
| return SDL_SetError("Could not initialize back buffer!\n"); |
| } |
| |
| |
| bwin->SetBitmap(bitmap); |
| |
| /* Set the pixel pointer */ |
| *pixels = bitmap->Bits(); |
| |
| /* pitch = width of window, in bytes */ |
| *pitch = bitmap->BytesPerRow(); |
| |
| bwin->SetBufferExists(true); |
| bwin->SetTrashBuffer(false); |
| bwin->UnlockBuffer(); |
| return 0; |
| } |
| |
| |
| |
| int BE_UpdateWindowFramebuffer(_THIS, SDL_Window * window, |
| const SDL_Rect * rects, int numrects) { |
| if(!window) |
| return 0; |
| |
| SDL_BWin *bwin = _ToBeWin(window); |
| |
| #ifdef DRAWTHREAD |
| bwin->LockBuffer(); |
| bwin->SetBufferDirty(true); |
| bwin->UnlockBuffer(); |
| #else |
| bwin->SetBufferDirty(true); |
| BE_UpdateOnce(window); |
| #endif |
| |
| return 0; |
| } |
| |
| int32 BE_DrawThread(void *data) { |
| SDL_BWin *bwin = (SDL_BWin*)data; |
| |
| BScreen bscreen; |
| if(!bscreen.IsValid()) { |
| return -1; |
| } |
| |
| while(bwin->ConnectionEnabled()) { |
| if( bwin->Connected() && bwin->BufferExists() && bwin->BufferIsDirty() ) { |
| bwin->LockBuffer(); |
| BBitmap *bitmap = NULL; |
| bitmap = bwin->GetBitmap(); |
| int32 windowPitch = bitmap->BytesPerRow(); |
| int32 bufferPitch = bwin->GetRowBytes(); |
| uint8 *windowpx; |
| uint8 *bufferpx; |
| |
| int32 BPP = bwin->GetBytesPerPx(); |
| int32 windowSub = bwin->GetFbX() * BPP + |
| bwin->GetFbY() * windowPitch; |
| clipping_rect *clips = bwin->GetClips(); |
| int32 numClips = bwin->GetNumClips(); |
| int i, y; |
| |
| /* Blit each clipping rectangle */ |
| bscreen.WaitForRetrace(); |
| for(i = 0; i < numClips; ++i) { |
| clipping_rect rc = clips[i]; |
| /* Get addresses of the start of each clipping rectangle */ |
| int32 width = clips[i].right - clips[i].left + 1; |
| int32 height = clips[i].bottom - clips[i].top + 1; |
| bufferpx = bwin->GetBufferPx() + |
| clips[i].top * bufferPitch + clips[i].left * BPP; |
| windowpx = (uint8*)bitmap->Bits() + |
| clips[i].top * windowPitch + clips[i].left * BPP - |
| windowSub; |
| |
| /* Copy each row of pixels from the window buffer into the frame |
| buffer */ |
| for(y = 0; y < height; ++y) |
| { |
| |
| if(bwin->CanTrashWindowBuffer()) { |
| goto escape; /* Break out before the buffer is killed */ |
| } |
| |
| memcpy(bufferpx, windowpx, width * BPP); |
| bufferpx += bufferPitch; |
| windowpx += windowPitch; |
| } |
| } |
| |
| bwin->SetBufferDirty(false); |
| escape: |
| bwin->UnlockBuffer(); |
| } else { |
| snooze(16000); |
| } |
| } |
| |
| return B_OK; |
| } |
| |
| void BE_DestroyWindowFramebuffer(_THIS, SDL_Window * window) { |
| SDL_BWin *bwin = _ToBeWin(window); |
| |
| bwin->LockBuffer(); |
| |
| /* Free and clear the window buffer */ |
| BBitmap *bitmap = bwin->GetBitmap(); |
| delete bitmap; |
| bwin->SetBitmap(NULL); |
| bwin->SetBufferExists(false); |
| bwin->UnlockBuffer(); |
| } |
| |
| |
| /* |
| * TODO: |
| * This was written to test if certain errors were caused by threading issues. |
| * The specific issues have since become rare enough that they may have been |
| * solved, but I doubt it- they were pretty sporadic before now. |
| */ |
| int32 BE_UpdateOnce(SDL_Window *window) { |
| SDL_BWin *bwin = _ToBeWin(window); |
| BScreen bscreen; |
| if(!bscreen.IsValid()) { |
| return -1; |
| } |
| |
| if(bwin->ConnectionEnabled() && bwin->Connected()) { |
| bwin->LockBuffer(); |
| int32 windowPitch = window->surface->pitch; |
| int32 bufferPitch = bwin->GetRowBytes(); |
| uint8 *windowpx; |
| uint8 *bufferpx; |
| |
| int32 BPP = bwin->GetBytesPerPx(); |
| uint8 *windowBaseAddress = (uint8*)window->surface->pixels; |
| int32 windowSub = bwin->GetFbX() * BPP + |
| bwin->GetFbY() * windowPitch; |
| clipping_rect *clips = bwin->GetClips(); |
| int32 numClips = bwin->GetNumClips(); |
| int i, y; |
| |
| /* Blit each clipping rectangle */ |
| bscreen.WaitForRetrace(); |
| for(i = 0; i < numClips; ++i) { |
| clipping_rect rc = clips[i]; |
| /* Get addresses of the start of each clipping rectangle */ |
| int32 width = clips[i].right - clips[i].left + 1; |
| int32 height = clips[i].bottom - clips[i].top + 1; |
| bufferpx = bwin->GetBufferPx() + |
| clips[i].top * bufferPitch + clips[i].left * BPP; |
| windowpx = windowBaseAddress + |
| clips[i].top * windowPitch + clips[i].left * BPP - windowSub; |
| |
| /* Copy each row of pixels from the window buffer into the frame |
| buffer */ |
| for(y = 0; y < height; ++y) |
| { |
| memcpy(bufferpx, windowpx, width * BPP); |
| bufferpx += bufferPitch; |
| windowpx += windowPitch; |
| } |
| } |
| bwin->UnlockBuffer(); |
| } |
| return 0; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* SDL_VIDEO_DRIVER_HAIKU */ |