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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <windows.h>
#include "main/context.h"
#include "pipe/p_format.h"
#include "state_tracker/st_context.h"
#include "state_tracker/st_public.h"
#include "stw_framebuffer.h"
void
framebuffer_resize(
struct stw_framebuffer *fb,
GLuint width,
GLuint height )
{
if (fb->hbmDIB == NULL || fb->stfb->Base.Width != width || fb->stfb->Base.Height != height) {
if (fb->hbmDIB)
DeleteObject( fb->hbmDIB );
fb->hbmDIB = CreateCompatibleBitmap(
fb->hDC,
width,
height );
}
st_resize_framebuffer( fb->stfb, width, height );
}
static struct stw_framebuffer *fb_head = NULL;
static LRESULT CALLBACK
window_proc(
HWND hWnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam )
{
struct stw_framebuffer *fb;
for (fb = fb_head; fb != NULL; fb = fb->next)
if (fb->hWnd == hWnd)
break;
assert( fb != NULL );
if (uMsg == WM_SIZE && wParam != SIZE_MINIMIZED)
framebuffer_resize( fb, LOWORD( lParam ), HIWORD( lParam ) );
return CallWindowProc( fb->WndProc, hWnd, uMsg, wParam, lParam );
}
/* Create a new framebuffer object which will correspond to the given HDC.
*/
struct stw_framebuffer *
framebuffer_create(
HDC hdc,
GLvisual *visual,
GLuint width,
GLuint height )
{
struct stw_framebuffer *fb;
enum pipe_format colorFormat, depthFormat, stencilFormat;
fb = CALLOC_STRUCT( stw_framebuffer );
if (fb == NULL)
return NULL;
/* Determine PIPE_FORMATs for buffers.
*/
colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
if (visual->depthBits == 0)
depthFormat = PIPE_FORMAT_NONE;
else if (visual->depthBits <= 16)
depthFormat = PIPE_FORMAT_Z16_UNORM;
else if (visual->depthBits <= 24)
depthFormat = PIPE_FORMAT_S8Z24_UNORM;
else
depthFormat = PIPE_FORMAT_Z32_UNORM;
if (visual->stencilBits == 8) {
if (depthFormat == PIPE_FORMAT_S8Z24_UNORM)
stencilFormat = depthFormat;
else
stencilFormat = PIPE_FORMAT_S8_UNORM;
}
else {
stencilFormat = PIPE_FORMAT_NONE;
}
fb->stfb = st_create_framebuffer(
visual,
colorFormat,
depthFormat,
stencilFormat,
width,
height,
(void *) fb );
fb->cColorBits = GetDeviceCaps( hdc, BITSPIXEL );
fb->hDC = hdc;
/* Subclass a window associated with the device context.
*/
fb->hWnd = WindowFromDC( hdc );
if (fb->hWnd != NULL) {
fb->WndProc = (WNDPROC) SetWindowLong(
fb->hWnd,
GWL_WNDPROC,
(LONG) window_proc );
}
fb->next = fb_head;
fb_head = fb;
return fb;
}
void
framebuffer_destroy(
struct stw_framebuffer *fb )
{
struct stw_framebuffer **link = &fb_head;
struct stw_framebuffer *pfb = fb_head;
while (pfb != NULL) {
if (pfb == fb) {
if (fb->hWnd != NULL) {
SetWindowLong(
fb->hWnd,
GWL_WNDPROC,
(LONG) fb->WndProc );
}
*link = fb->next;
FREE( fb );
return;
}
link = &pfb->next;
pfb = pfb->next;
}
}
/* Given an hdc, return the corresponding wgl_context.
*/
struct stw_framebuffer *
framebuffer_from_hdc(
HDC hdc )
{
struct stw_framebuffer *fb;
for (fb = fb_head; fb != NULL; fb = fb->next)
if (fb->hDC == hdc)
return fb;
return NULL;
}
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