annotate src/video/win32/SDL_gapirender_c.h @ 3363:90aec03bf9fd

Fixed bug #627 Increased accuracy of alpha blend calculation
author Sam Lantinga <slouken@libsdl.org>
date Sat, 10 Oct 2009 07:48:57 +0000
parents 6338b7f2d024
children f7b03b6838cb
rev   line source
3168
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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 Stefan Klug
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23 klug.stefan@gmx.de
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24 */
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25
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26 #define WIN32_LEAN_AND_MEAN
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27 #include <windows.h>
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28
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29 /* hi res definitions */
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30 typedef struct _RawFrameBufferInfo
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31 {
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32 WORD wFormat;
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33 WORD wBPP;
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34 VOID *pFramePointer;
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35 int cxStride;
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36 int cyStride;
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37 int cxPixels;
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38 int cyPixels;
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39 } RawFrameBufferInfo;
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40
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41 #define GETRAWFRAMEBUFFER 0x00020001
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42
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43 #define FORMAT_565 1
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44 #define FORMAT_555 2
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45 #define FORMAT_OTHER 3
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46
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47
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48 /* From gx.h, since it's not really C compliant */
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49
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50 struct GXDisplayProperties
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51 {
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52 DWORD cxWidth;
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53 DWORD cyHeight; // notice lack of 'th' in the word height.
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54 long cbxPitch; // number of bytes to move right one x pixel - can be negative.
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55 long cbyPitch; // number of bytes to move down one y pixel - can be negative.
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56 long cBPP; // # of bits in each pixel
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57 DWORD ffFormat; // format flags.
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58 };
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59
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60 struct GXKeyList
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61 {
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62 short vkUp; // key for up
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63 POINT ptUp; // x,y position of key/button. Not on screen but in screen coordinates.
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64 short vkDown;
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65 POINT ptDown;
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66 short vkLeft;
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67 POINT ptLeft;
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68 short vkRight;
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69 POINT ptRight;
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70 short vkA;
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71 POINT ptA;
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72 short vkB;
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73 POINT ptB;
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74 short vkC;
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75 POINT ptC;
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76 short vkStart;
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77 POINT ptStart;
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78 };
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79
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80 typedef int (*PFNGXOpenDisplay) (HWND hWnd, DWORD dwFlags);
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81 typedef int (*PFNGXCloseDisplay) ();
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82 typedef void *(*PFNGXBeginDraw) ();
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83 typedef int (*PFNGXEndDraw) ();
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84 typedef int (*PFNGXOpenInput) ();
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85 typedef int (*PFNGXCloseInput) ();
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86 typedef struct GXDisplayProperties (*PFNGXGetDisplayProperties) ();
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87 typedef struct GXKeyList (*PFNGXGetDefaultKeys) (int iOptions);
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88 typedef int (*PFNGXSuspend) ();
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89 typedef int (*PFNGXResume) ();
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90 typedef int (*PFNGXSetViewport) (DWORD dwTop, DWORD dwHeight,
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91 DWORD dwReserved1, DWORD dwReserved2);
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92 typedef BOOL(*PFNGXIsDisplayDRAMBuffer) ();
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93
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94 struct GapiFunc
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95 {
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96 PFNGXOpenDisplay GXOpenDisplay;
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97 PFNGXCloseDisplay GXCloseDisplay;
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98 PFNGXBeginDraw GXBeginDraw;
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99 PFNGXEndDraw GXEndDraw;
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100 PFNGXOpenInput GXOpenInput;
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101 PFNGXCloseInput GXCloseInput;
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102 PFNGXGetDisplayProperties GXGetDisplayProperties;
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103 PFNGXGetDefaultKeys GXGetDefaultKeys;
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104 PFNGXSuspend GXSuspend;
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105 PFNGXResume GXResume;
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106 PFNGXSetViewport GXSetViewport;
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107 PFNGXIsDisplayDRAMBuffer GXIsDisplayDRAMBuffer;
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108 } gx;
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109
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110 #define kfLandscape 0x8 // Screen is rotated 270 degrees
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111 #define kfPalette 0x10 // Pixel values are indexes into a palette
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112 #define kfDirect 0x20 // Pixel values contain actual level information
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113 #define kfDirect555 0x40 // 5 bits each for red, green and blue values in a pixel.
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114 #define kfDirect565 0x80 // 5 red bits, 6 green bits and 5 blue bits per pixel
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115 #define kfDirect888 0x100 // 8 bits each for red, green and blue values in a pixel.
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116 #define kfDirect444 0x200 // 4 red, 4 green, 4 blue
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117 #define kfDirectInverted 0x400
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118
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119 #define GX_FULLSCREEN 0x01 // for OpenDisplay()
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120 #define GX_NORMALKEYS 0x02
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121 #define GX_LANDSCAPEKEYS 0x03