Mercurial > sdl-ios-xcode

view src/video/win32/SDL_win32video.h @ 3485:e77a69aae239

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Mason Wheeler to sdl I updated SDL, and suddenly my SDL frames stopped working. They'd "initialize" full of gibberish, and I couldn't render anything to them. After a bit of digging, I found a problem: the renderer initialization routine in my SDL frame code wasn't getting called anymore. procedure TSdlFrame.Paint; begin if SDL_SelectRenderer(FWindowID) = -1 then CreateRenderer; SDL_RenderPresent; end; function TSdlFrame.CreateRenderer: boolean; const pf: tagPIXELFORMATDESCRIPTOR = (nSize: sizeof(pf); nVersion: 1; dwFlags: PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL or PFD_DOUBLEBUFFER; iPixelType: PFD_TYPE_RGBA; cColorBits: 24; cAlphaBits: 8; iLayerType: PFD_MAIN_PLANE); RENDERERS: array[TRendererType] of AnsiString = ('software', 'gdi', 'opengl', 'd3d'); var pFormat: integer; begin if (SDL_SelectRenderer(FWindowID) = 0) then begin result := true; Exit; end; if FRendererType = rtOpenGL then begin pFormat := ChoosePixelFormat(canvas.Handle, @pf); if not SetPixelFormat(canvas.Handle, pFormat, @pf) then outputDebugString(PChar(SysErrorMessage(GetLastError))); if wglCreateContext(canvas.Handle) = 0 then outputDebugString(PChar(SysErrorMessage(GetLastError))); end; if (SDL_CreateRenderer(FWindowID, SDL_RendererIndex(RENDERERS[FRendererType]), [sdlrPresentFlip3, sdlrAccelerated]) = 0) then begin SDL_ShowWindow(FWindowID); assert(SDL_SetRenderDrawColor(0, 0, 0, 255) = 0); FFlags := SDL_GetWindowFlags(FWindowID); if assigned(FOnAvailable) then FOnAvailable(self); end else outputDebugString(pChar(format('SDL_CreateRenderer failed: %s', [sdl_GetError]))); result := SDL_SelectRenderer(FWindowID) = 0; end; This is a critical issue. The Paint method gets called when the control receives a WM_PAINT message from Windows. I can't create the renderer before then, or it will fail and cause trouble. And when I do create it, it needs to be created with certain parameters. So imagine my surprise when I started debugging into the DLL and found that SDL_SelectRenderer was trying to be "helpful" by creating the renderer for me if it didn't already exist! Now not only does my initialization code not get called, I end up with the wrong renderer and so things don't render as expected when I try to use the window.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Nov 2009 04:48:12 +0000
parents 413672b09bb3
children f7b03b6838cb
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _SDL_win32video_h
#define _SDL_win32video_h

#include "../SDL_sysvideo.h"

#define WIN32_LEAN_AND_MEAN
#define UNICODE
#define WINVER  0x500           /* Need 0x410 for AlphaBlend() and 0x500 for EnumDisplayDevices() */
#include <windows.h>

#if SDL_VIDEO_RENDER_D3D
//#include <d3d9.h>
#define D3D_DEBUG_INFO
#include "d3d9.h"
#endif

#if SDL_VIDEO_RENDER_DDRAW
/* WIN32_LEAN_AND_MEAN was defined, so we have to include this by hand */
#include <objbase.h>
#include "ddraw.h"
#endif

#include "wactab/wintab.h"
#define PACKETDATA ( PK_X | PK_Y | PK_BUTTONS | PK_NORMAL_PRESSURE | PK_CURSOR)
#define PACKETMODE 0
#include "wactab/pktdef.h"

#include "SDL_win32events.h"
#include "SDL_win32gamma.h"
#include "SDL_win32keyboard.h"
#include "SDL_win32modes.h"
#include "SDL_win32mouse.h"
#include "SDL_win32opengl.h"
#include "SDL_win32window.h"

#ifdef UNICODE
#define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "UCS-2", (char *)S, (SDL_wcslen(S)+1)*sizeof(WCHAR))
#define WIN_UTF8ToString(S) (WCHAR *)SDL_iconv_string("UCS-2", "UTF-8", (char *)S, SDL_strlen(S)+1)
#else
#define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "ASCII", (char *)S, (SDL_strlen(S)+1))
#define WIN_UTF8ToString(S) SDL_iconv_string("ASCII", "UTF-8", (char *)S, SDL_strlen(S)+1)
#endif

/* Private display data */

typedef struct SDL_VideoData
{
#if SDL_VIDEO_RENDER_D3D
    HANDLE d3dDLL;
    IDirect3D9 *d3d;
#endif
#if SDL_VIDEO_RENDER_DDRAW
    HANDLE ddrawDLL;
    IDirectDraw *ddraw;
#endif

/* *INDENT-OFF* */
    /* Function pointers for the Wacom API */
    HANDLE wintabDLL;
    UINT (*WTInfoA) (UINT, UINT, LPVOID);
    HCTX (*WTOpenA) (HWND, LPLOGCONTEXTA, BOOL);
    int (*WTPacket) (HCTX, UINT, LPVOID);
    BOOL (*WTClose) (HCTX);
/* *INDENT-ON* */

    int keyboard;
    const SDL_scancode *key_layout;
} SDL_VideoData;

#endif /* _SDL_win32video_h */

/* vi: set ts=4 sw=4 expandtab: */