Atlas - SDL_bframebuffer.cc
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_VIDEO_DRIVER_HAIKU
24
25#include "SDL_bframebuffer.h"
26
27#include <AppKit.h>
28#include <InterfaceKit.h>
29#include "SDL_bmodes.h"
30#include "SDL_BWin.h"
31
32#include "../../core/haiku/SDL_BApp.h"
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window)
39{
40    return (SDL_BWin *)(window->internal);
41}
42
43static SDL_INLINE SDL_BLooper *_GetBeLooper()
44{
45    return SDL_Looper;
46}
47
48bool HAIKU_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window * window, SDL_PixelFormat * format, void ** pixels, int *pitch)
49{
50    SDL_BWin *bwin = _ToBeWin(window);
51    BScreen bscreen;
52    if (!bscreen.IsValid()) {
53        return false;
54    }
55
56    // Make sure we have exclusive access to frame buffer data
57    bwin->LockBuffer();
58
59    bwin->CreateView();
60
61    // format
62    display_mode bmode;
63    bscreen.GetMode(&bmode);
64    *format = HAIKU_ColorSpaceToSDLPxFormat(bmode.space);
65
66    // Create the new bitmap object
67    BBitmap *bitmap = bwin->GetBitmap();
68
69    if (bitmap) {
70        delete bitmap;
71    }
72    bitmap = new BBitmap(bwin->Bounds(), (color_space)bmode.space,
73            false,    // Views not accepted
74            true);    // Contiguous memory required
75
76    if (bitmap->InitCheck() != B_OK) {
77        delete bitmap;
78        return SDL_SetError("Could not initialize back buffer!");
79    }
80
81
82    bwin->SetBitmap(bitmap);
83
84    // Set the pixel pointer
85    *pixels = bitmap->Bits();
86
87    // pitch = width of window, in bytes
88    *pitch = bitmap->BytesPerRow();
89
90    bwin->UnlockBuffer();
91    return true;
92}
93
94
95
96bool HAIKU_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window * window,
97                                      const SDL_Rect * rects, int numrects) {
98    if (!window) {
99        return true;
100    }
101
102    SDL_BWin *bwin = _ToBeWin(window);
103
104    bwin->PostMessage(BWIN_UPDATE_FRAMEBUFFER);
105
106    return true;
107}
108
109void HAIKU_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window * window) {
110    SDL_BWin *bwin = _ToBeWin(window);
111
112    bwin->LockBuffer();
113
114    // Free and clear the window buffer
115    BBitmap *bitmap = bwin->GetBitmap();
116    delete bitmap;
117    bwin->SetBitmap(NULL);
118
119    bwin->RemoveView();
120
121    bwin->UnlockBuffer();
122}
123
124#ifdef __cplusplus
125}
126#endif
127
128#endif // SDL_VIDEO_DRIVER_HAIKU
129
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
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