Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fbvideo.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 | 99210400e8b9 |
| children | f7b03b6838cb |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #ifndef _SDL_fbvideo_h | |
| 25 #define _SDL_fbvideo_h | |
| 26 | |
| 27 #include <sys/types.h> | |
| 28 #include <termios.h> | |
| 29 #include <linux/fb.h> | |
| 30 | |
| 31 #include "SDL_mouse.h" | |
| 32 #include "SDL_mutex.h" | |
|
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33 #include "../SDL_sysvideo.h" |
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34 #if SDL_INPUT_TSLIB |
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35 #include "tslib.h" |
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36 #endif |
| 0 | 37 |
| 38 /* Hidden "this" pointer for the video functions */ | |
| 39 #define _THIS SDL_VideoDevice *this | |
| 40 | |
| 41 | |
| 42 /* This is the structure we use to keep track of video memory */ | |
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43 typedef struct vidmem_bucket |
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44 { |
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45 struct vidmem_bucket *prev; |
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46 int used; |
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47 int dirty; |
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48 char *base; |
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49 unsigned int size; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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50 struct vidmem_bucket *next; |
| 0 | 51 } vidmem_bucket; |
| 52 | |
| 53 /* Private display data */ | |
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54 struct SDL_PrivateVideoData |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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55 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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56 int console_fd; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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57 struct fb_var_screeninfo cache_vinfo; |
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parents:
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58 struct fb_var_screeninfo saved_vinfo; |
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59 int saved_cmaplen; |
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60 __u16 *saved_cmap; |
| 0 | 61 |
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62 int current_vt; |
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63 int saved_vt; |
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64 int keyboard_fd; |
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65 int saved_kbd_mode; |
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66 struct termios saved_kbd_termios; |
| 0 | 67 |
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68 int mouse_fd; |
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69 #if SDL_INPUT_TSLIB |
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70 struct tsdev *ts_dev; |
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71 #endif |
| 0 | 72 |
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73 char *mapped_mem; |
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parents:
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74 int mapped_memlen; |
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75 int mapped_offset; |
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76 char *mapped_io; |
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77 long mapped_iolen; |
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78 int flip_page; |
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79 char *flip_address[2]; |
| 0 | 80 |
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81 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
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82 int SDL_nummodes[NUM_MODELISTS]; |
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83 SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
| 0 | 84 |
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85 vidmem_bucket surfaces; |
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86 int surfaces_memtotal; |
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87 int surfaces_memleft; |
| 0 | 88 |
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89 SDL_mutex *hw_lock; |
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90 int switched_away; |
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parents:
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91 struct fb_var_screeninfo screen_vinfo; |
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92 Uint32 screen_arealen; |
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93 Uint8 *screen_contents; |
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94 __u16 screen_palette[3 * 256]; |
| 0 | 95 |
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96 void (*wait_vbl) (_THIS); |
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97 void (*wait_idle) (_THIS); |
| 0 | 98 }; |
| 99 /* Old variable names */ | |
| 100 #define console_fd (this->hidden->console_fd) | |
| 101 #define current_vt (this->hidden->current_vt) | |
| 102 #define saved_vt (this->hidden->saved_vt) | |
| 103 #define keyboard_fd (this->hidden->keyboard_fd) | |
| 104 #define saved_kbd_mode (this->hidden->saved_kbd_mode) | |
| 105 #define saved_kbd_termios (this->hidden->saved_kbd_termios) | |
| 106 #define mouse_fd (this->hidden->mouse_fd) | |
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107 #if SDL_INPUT_TSLIB |
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108 #define ts_dev (this->hidden->ts_dev) |
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109 #endif |
| 0 | 110 #define cache_vinfo (this->hidden->cache_vinfo) |
| 111 #define saved_vinfo (this->hidden->saved_vinfo) | |
| 112 #define saved_cmaplen (this->hidden->saved_cmaplen) | |
| 113 #define saved_cmap (this->hidden->saved_cmap) | |
| 114 #define mapped_mem (this->hidden->mapped_mem) | |
| 115 #define mapped_memlen (this->hidden->mapped_memlen) | |
| 116 #define mapped_offset (this->hidden->mapped_offset) | |
| 117 #define mapped_io (this->hidden->mapped_io) | |
| 118 #define mapped_iolen (this->hidden->mapped_iolen) | |
| 119 #define flip_page (this->hidden->flip_page) | |
| 120 #define flip_address (this->hidden->flip_address) | |
| 121 #define SDL_nummodes (this->hidden->SDL_nummodes) | |
| 122 #define SDL_modelist (this->hidden->SDL_modelist) | |
| 123 #define surfaces (this->hidden->surfaces) | |
| 124 #define surfaces_memtotal (this->hidden->surfaces_memtotal) | |
| 125 #define surfaces_memleft (this->hidden->surfaces_memleft) | |
| 126 #define hw_lock (this->hidden->hw_lock) | |
| 1780 | 127 #define switched_away (this->hidden->switched_away) |
| 128 #define screen_vinfo (this->hidden->screen_vinfo) | |
| 129 #define screen_arealen (this->hidden->screen_arealen) | |
| 130 #define screen_contents (this->hidden->screen_contents) | |
| 131 #define screen_palette (this->hidden->screen_palette) | |
| 0 | 132 #define wait_vbl (this->hidden->wait_vbl) |
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133 #define wait_idle (this->hidden->wait_idle) |
| 0 | 134 |
| 135 /* Accelerator types that are supported by the driver, but are not | |
| 136 necessarily in the kernel headers on the system we compile on. | |
| 137 */ | |
| 138 #ifndef FB_ACCEL_MATROX_MGAG400 | |
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139 #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */ |
| 0 | 140 #endif |
| 141 #ifndef FB_ACCEL_3DFX_BANSHEE | |
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142 #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */ |
| 0 | 143 #endif |
| 144 | |
| 145 /* These functions are defined in SDL_fbvideo.c */ | |
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146 extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 * area); |
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147 extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 * area); |
| 0 | 148 |
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149 /* These are utility functions for working with video surfaces */ |
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150 |
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151 static __inline__ void |
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152 FB_AddBusySurface(SDL_Surface * surface) |
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153 { |
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154 ((vidmem_bucket *) surface->hwdata)->dirty = 1; |
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155 } |
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156 |
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157 static __inline__ int |
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158 FB_IsSurfaceBusy(SDL_Surface * surface) |
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159 { |
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160 return ((vidmem_bucket *) surface->hwdata)->dirty; |
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161 } |
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162 |
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163 static __inline__ void |
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164 FB_WaitBusySurfaces(_THIS) |
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165 { |
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166 vidmem_bucket *bucket; |
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167 |
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168 /* Wait for graphic operations to complete */ |
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169 wait_idle(this); |
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170 |
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171 /* Clear all surface dirty bits */ |
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172 for (bucket = &surfaces; bucket; bucket = bucket->next) { |
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173 bucket->dirty = 0; |
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174 } |
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175 } |
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176 |
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177 static __inline__ void |
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178 FB_dst_to_xy(_THIS, SDL_Surface * dst, int *x, int *y) |
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179 { |
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180 *x = (long) ((char *) dst->pixels - mapped_mem) % this->screen->pitch; |
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181 *y = (long) ((char *) dst->pixels - mapped_mem) / this->screen->pitch; |
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182 if (dst == this->screen) { |
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183 *x += this->offset_x; |
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184 *y += this->offset_y; |
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185 } |
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186 } |
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187 |
| 0 | 188 #endif /* _SDL_fbvideo_h */ |
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189 /* vi: set ts=4 sw=4 expandtab: */ |