1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 #include "main/context.h"
31 #include "pipe/p_format.h"
32 #include "pipe/p_screen.h"
33 #include "state_tracker/st_context.h"
34 #include "state_tracker/st_public.h"
35 #include "stw_framebuffer.h"
36 #include "stw_device.h"
37 #include "stw_public.h"
38 #include "stw_winsys.h"
43 struct stw_framebuffer
*fb
,
47 if (fb
->hbmDIB
== NULL
|| fb
->stfb
->Base
.Width
!= width
|| fb
->stfb
->Base
.Height
!= height
) {
49 DeleteObject( fb
->hbmDIB
);
51 fb
->hbmDIB
= CreateCompatibleBitmap(
57 st_resize_framebuffer( fb
->stfb
, width
, height
);
60 static struct stw_framebuffer
*fb_head
= NULL
;
62 static LRESULT CALLBACK
69 struct stw_framebuffer
*fb
;
71 for (fb
= fb_head
; fb
!= NULL
; fb
= fb
->next
)
76 if (uMsg
== WM_SIZE
&& wParam
!= SIZE_MINIMIZED
)
77 framebuffer_resize( fb
, LOWORD( lParam
), HIWORD( lParam
) );
79 return CallWindowProc( fb
->WndProc
, hWnd
, uMsg
, wParam
, lParam
);
82 /* Create a new framebuffer object which will correspond to the given HDC.
84 struct stw_framebuffer
*
91 struct stw_framebuffer
*fb
;
92 enum pipe_format colorFormat
, depthFormat
, stencilFormat
;
94 fb
= CALLOC_STRUCT( stw_framebuffer
);
98 /* Determine PIPE_FORMATs for buffers.
100 colorFormat
= PIPE_FORMAT_A8R8G8B8_UNORM
;
102 if (visual
->depthBits
== 0)
103 depthFormat
= PIPE_FORMAT_NONE
;
104 else if (visual
->depthBits
<= 16)
105 depthFormat
= PIPE_FORMAT_Z16_UNORM
;
106 else if (visual
->depthBits
<= 24)
107 depthFormat
= PIPE_FORMAT_S8Z24_UNORM
;
109 depthFormat
= PIPE_FORMAT_Z32_UNORM
;
111 if (visual
->stencilBits
== 8) {
112 if (depthFormat
== PIPE_FORMAT_S8Z24_UNORM
)
113 stencilFormat
= depthFormat
;
115 stencilFormat
= PIPE_FORMAT_S8_UNORM
;
118 stencilFormat
= PIPE_FORMAT_NONE
;
121 fb
->stfb
= st_create_framebuffer(
130 fb
->cColorBits
= GetDeviceCaps( hdc
, BITSPIXEL
);
133 /* Subclass a window associated with the device context.
135 fb
->hWnd
= WindowFromDC( hdc
);
136 if (fb
->hWnd
!= NULL
) {
137 fb
->WndProc
= (WNDPROC
) SetWindowLong(
140 (LONG
) window_proc
);
150 struct stw_framebuffer
*fb
)
152 struct stw_framebuffer
**link
= &fb_head
;
153 struct stw_framebuffer
*pfb
= fb_head
;
155 while (pfb
!= NULL
) {
157 if (fb
->hWnd
!= NULL
) {
161 (LONG
) fb
->WndProc
);
174 /* Given an hdc, return the corresponding stw_framebuffer.
176 struct stw_framebuffer
*
177 framebuffer_from_hdc(
180 struct stw_framebuffer
*fb
;
182 for (fb
= fb_head
; fb
!= NULL
; fb
= fb
->next
)
193 struct stw_framebuffer
*fb
;
194 struct pipe_surface
*surf
;
196 fb
= framebuffer_from_hdc( hdc
);
200 /* If we're swapping the buffer associated with the current context
201 * we have to flush any pending rendering commands first.
203 st_notify_swapbuffers( fb
->stfb
);
205 st_get_framebuffer_surface( fb
->stfb
, ST_SURFACE_BACK_LEFT
, &surf
);
207 stw_dev
->stw_winsys
->flush_frontbuffer(stw_dev
->screen
,