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annotate src/video/gapi/SDL_gapivideo.h @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents 99210400e8b9
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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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_gapivideo_h
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25 #define _SDL_gapivideo_h
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26
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27 #include "SDL_mouse.h"
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28 #include "SDL_mutex.h"
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29 #include "../SDL_sysvideo.h"
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30
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31 /* From gx.h, since it's not really C compliant */
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32
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33 struct GXDisplayProperties
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34 {
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35 DWORD cxWidth;
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36 DWORD cyHeight; // notice lack of 'th' in the word height.
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37 long cbxPitch; // number of bytes to move right one x pixel - can be negative.
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38 long cbyPitch; // number of bytes to move down one y pixel - can be negative.
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39 long cBPP; // # of bits in each pixel
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40 DWORD ffFormat; // format flags.
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41 };
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42
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43 struct GXKeyList
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44 {
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45 short vkUp; // key for up
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46 POINT ptUp; // x,y position of key/button. Not on screen but in screen coordinates.
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47 short vkDown;
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48 POINT ptDown;
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49 short vkLeft;
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50 POINT ptLeft;
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51 short vkRight;
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52 POINT ptRight;
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53 short vkA;
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54 POINT ptA;
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55 short vkB;
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56 POINT ptB;
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57 short vkC;
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58 POINT ptC;
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59 short vkStart;
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60 POINT ptStart;
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61 };
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62
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63 typedef int (*PFNGXOpenDisplay) (HWND hWnd, DWORD dwFlags);
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64 typedef int (*PFNGXCloseDisplay) ();
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65 typedef void *(*PFNGXBeginDraw) ();
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66 typedef int (*PFNGXEndDraw) ();
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67 typedef int (*PFNGXOpenInput) ();
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68 typedef int (*PFNGXCloseInput) ();
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69 typedef struct GXDisplayProperties (*PFNGXGetDisplayProperties) ();
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70 typedef struct GXKeyList (*PFNGXGetDefaultKeys) (int iOptions);
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71 typedef int (*PFNGXSuspend) ();
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72 typedef int (*PFNGXResume) ();
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73 typedef int (*PFNGXSetViewport) (DWORD dwTop, DWORD dwHeight,
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74 DWORD dwReserved1, DWORD dwReserved2);
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75 typedef BOOL(*PFNGXIsDisplayDRAMBuffer) ();
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76
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77 struct GapiFunc
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78 {
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79 PFNGXOpenDisplay GXOpenDisplay;
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80 PFNGXCloseDisplay GXCloseDisplay;
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81 PFNGXBeginDraw GXBeginDraw;
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82 PFNGXEndDraw GXEndDraw;
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83 PFNGXOpenInput GXOpenInput;
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84 PFNGXCloseInput GXCloseInput;
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85 PFNGXGetDisplayProperties GXGetDisplayProperties;
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86 PFNGXGetDefaultKeys GXGetDefaultKeys;
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87 PFNGXSuspend GXSuspend;
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88 PFNGXResume GXResume;
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89 PFNGXSetViewport GXSetViewport;
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90 PFNGXIsDisplayDRAMBuffer GXIsDisplayDRAMBuffer;
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91 };
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92
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93 #define kfLandscape 0x8 // Screen is rotated 270 degrees
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94 #define kfPalette 0x10 // Pixel values are indexes into a palette
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95 #define kfDirect 0x20 // Pixel values contain actual level information
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96 #define kfDirect555 0x40 // 5 bits each for red, green and blue values in a pixel.
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97 #define kfDirect565 0x80 // 5 red bits, 6 green bits and 5 blue bits per pixel
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98 #define kfDirect888 0x100 // 8 bits each for red, green and blue values in a pixel.
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99 #define kfDirect444 0x200 // 4 red, 4 green, 4 blue
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100 #define kfDirectInverted 0x400
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101
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102 #define GX_FULLSCREEN 0x01 // for OpenDisplay()
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103 #define GX_NORMALKEYS 0x02
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104 #define GX_LANDSCAPEKEYS 0x03
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105
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106 typedef enum
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107 {
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108 SDL_ORIENTATION_UP,
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109 SDL_ORIENTATION_DOWN,
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110 SDL_ORIENTATION_LEFT,
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111 SDL_ORIENTATION_RIGHT
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112 } SDL_ScreenOrientation;
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113
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114 /* GAPI video mode */
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115 typedef enum
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116 {
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117 GAPI_NONE = 0,
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118 GAPI_DIRECT_565,
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119 GAPI_DIRECT_555,
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120 GAPI_MONO,
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121 GAPI_PALETTE
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122 } GAPIVideoMode;
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123
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124 /* Hidden "this" pointer for the video functions */
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125 #define _THIS SDL_VideoDevice *this
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126
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127 typedef unsigned short PIXEL;
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128
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129 /* Private display data
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130 begin with DIB private structure to allow DIB events code sharing
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131 */
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132 struct SDL_PrivateVideoData
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133 {
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134 HBITMAP screen_bmp;
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135 HPALETTE screen_pal;
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136
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137 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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138 int SDL_nummodes[NUM_MODELISTS];
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139 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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140 enum SDL_ScreenOrientation userOrientation;
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141 int invert;
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142 char hiresFix; // using hires mode without defining hires resource
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143 // --------------
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144 int useGXOpenDisplay; /* use GXOpenDispplay */
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145 int w, h;
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146 enum SDL_ScreenOrientation gapiOrientation;
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147
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148 void *buffer; // may be 8, 16, 24, 32 bpp
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149 PIXEL *videoMem;
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150 BOOL needUpdate;
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151 struct GXKeyList keyList;
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152 struct GapiFunc gxFunc;
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153 struct GXDisplayProperties gxProperties;
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154 enum GAPIVideoMode videoMode;
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155 int colorscale;
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156 int dstLineStep; // in bytes
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157 int dstPixelStep; // in bytes
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158 int startOffset; // in bytes
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159 int useVga;
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160 int suspended; // do not pu anything into video memory
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161 };
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162
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163
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164 #define gapiBuffer this->hidden->buffer
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165 #define gapi this->hidden
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166
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167 #endif /* _SDL_gapivideo_h */
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168 /* vi: set ts=4 sw=4 expandtab: */