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

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
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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99210400e8b9 Updated copyright date
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_win32video_h
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25 #define _SDL_win32video_h
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26
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27 #include "../SDL_sysvideo.h"
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28
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29 #define WIN32_LEAN_AND_MEAN
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30 #define UNICODE
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31 #define WINVER 0x500 /* Need 0x410 for AlphaBlend() and 0x500 for EnumDisplayDevices() */
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32 #include <windows.h>
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33
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34 #if SDL_VIDEO_RENDER_D3D
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35 //#include <d3d9.h>
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36 #define D3D_DEBUG_INFO
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37 #include "d3d9.h"
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38 #endif
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39
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40 #if SDL_VIDEO_RENDER_DDRAW
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41 /* WIN32_LEAN_AND_MEAN was defined, so we have to include this by hand */
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42 #include <objbase.h>
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43 #include "ddraw.h"
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44 #endif
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45
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46 #include "wactab/wintab.h"
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47 #define PACKETDATA ( PK_X | PK_Y | PK_BUTTONS | PK_NORMAL_PRESSURE | PK_CURSOR)
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48 #define PACKETMODE 0
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49 #include "wactab/pktdef.h"
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50
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51 #include "SDL_win32events.h"
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52 #include "SDL_win32gamma.h"
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53 #include "SDL_win32keyboard.h"
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54 #include "SDL_win32modes.h"
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55 #include "SDL_win32mouse.h"
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56 #include "SDL_win32opengl.h"
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57 #include "SDL_win32window.h"
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58
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59 #ifdef UNICODE
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60 #define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "UCS-2", (char *)S, (SDL_wcslen(S)+1)*sizeof(WCHAR))
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61 #define WIN_UTF8ToString(S) (WCHAR *)SDL_iconv_string("UCS-2", "UTF-8", (char *)S, SDL_strlen(S)+1)
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62 #else
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63 #define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "ASCII", (char *)S, (SDL_strlen(S)+1))
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64 #define WIN_UTF8ToString(S) SDL_iconv_string("ASCII", "UTF-8", (char *)S, SDL_strlen(S)+1)
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65 #endif
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66
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67 /* Private display data */
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68
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69 typedef struct SDL_VideoData
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70 {
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71 #if SDL_VIDEO_RENDER_D3D
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72 HANDLE d3dDLL;
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73 IDirect3D9 *d3d;
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74 #endif
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75 #if SDL_VIDEO_RENDER_DDRAW
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76 HANDLE ddrawDLL;
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77 IDirectDraw *ddraw;
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78 #endif
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79
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80 /* *INDENT-OFF* */
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81 /* Function pointers for the Wacom API */
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82 HANDLE wintabDLL;
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83 UINT (*WTInfoA) (UINT, UINT, LPVOID);
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84 HCTX (*WTOpenA) (HWND, LPLOGCONTEXTA, BOOL);
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85 int (*WTPacket) (HCTX, UINT, LPVOID);
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86 BOOL (*WTClose) (HCTX);
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87 /* *INDENT-ON* */
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88
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89 int keyboard;
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90 const SDL_scancode *key_layout;
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91 } SDL_VideoData;
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92
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93 #endif /* _SDL_win32video_h */
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94
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95 /* vi: set ts=4 sw=4 expandtab: */