Mercurial > projects > mde
annotate mde/setup/Screen.d @ 91:4d5d53e4f881
Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Some debugging improvements.
When multiple .mtt files are read for merging, files with invalid headers are ignored and no error is thrown so long as at least one file os valid.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Thu, 16 Oct 2008 17:43:48 +0100 |
parents | 79d816b3e2d2 |
children | 9520cc0448e5 |
rev | line source |
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1 /* LICENSE BLOCK |
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2 Part of mde: a Modular D game-oriented Engine |
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3 Copyright © 2007-2008 Diggory Hardy |
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4 |
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5 This program is free software: you can redistribute it and/or modify it under the terms |
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6 of the GNU General Public License as published by the Free Software Foundation, either |
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7 version 2 of the License, or (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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11 See the GNU General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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15 |
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16 /** Screen: SDL & OpenGL setup/cleanup, drawing. |
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17 * |
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18 * Has an interface by which other code can hook in for drawing and resize notifications. */ |
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19 module mde.setup.Screen; |
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20 |
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21 import mde.setup.exception; |
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22 import mde.lookup.Options; |
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23 import imde = mde.imde; |
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24 debug (drawGlyphCache) import mde.font.font; |
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25 |
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26 import tango.util.log.Log : Log, Logger; |
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27 import tango.stdc.stringz; |
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28 import tango.time.Time; // TimeSpan (type only; unused) |
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29 |
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30 import derelict.sdl.sdl; |
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31 import derelict.opengl.gl; // for loading a later gl version |
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32 import derelict.util.exception; |
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33 |
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34 /** Currently just used as a namespace. Potential for multiple screen support later? */ |
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35 struct Screen { |
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36 // TYPES (these mustn't be static): |
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37 /** Interface for anything hooking into the screen for drawing, etc. */ |
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38 interface IDrawable { |
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39 /** Called on window creation and whenever the window manager resizes the window, before |
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40 * the new size is set. The new size is passed. |
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41 * |
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42 * The parameters were passed as ref to allow the called function to change them, but SDL |
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43 * didn't appear able to resize the window (on X11), so this was dropped. */ |
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44 void sizeEvent (int w, int h); |
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45 |
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46 /** Called you guess when :-) */ |
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47 void draw (); |
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48 } |
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49 |
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50 /** All video options. */ |
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51 class OptionsVideo : Options { |
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52 mixin (impl!("bool fullscreen,hardware,resizable,noFrame; int screenW,screenH,windowW,windowH;")); |
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53 } |
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54 |
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55 static: |
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56 /** Init function to initialize SDL. */ |
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57 StageState init () { // init func |
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58 // Initialise SDL |
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59 if (SDL_Init (SDL_INIT_VIDEO | SDL_INIT_JOYSTICK /+| SDL_INIT_EVENTTHREAD+/)) { |
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60 logger.fatal ("SDL initialisation failed:"); |
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61 char* msg = SDL_GetError (); |
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62 logger.fatal (msg ? fromStringz(msg) : "no reason available"); |
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63 |
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64 throw new InitException ("SDL Initialization failed"); |
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65 } |
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66 return StageState.ACTIVE; |
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67 } |
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68 /** SDL shutdown */ |
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69 StageState cleanup () { |
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70 SDL_Quit(); |
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71 return StageState.INACTIVE; |
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72 } |
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73 /** Init function to set up a window with OpenGL support. */ |
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74 StageState initWindow () { |
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75 //BEGIN Create window and initialize OpenGL |
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76 // Window creation flags and size |
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77 flags = SDL_OPENGL; |
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78 if (vidOpts.hardware) flags |= SDL_HWSURFACE | SDL_DOUBLEBUF; |
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79 else flags |= SDL_SWSURFACE; |
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80 int w, h; |
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81 if (vidOpts.fullscreen) { |
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82 flags |= SDL_FULLSCREEN; |
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83 w = vidOpts.screenW; |
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84 h = vidOpts.screenH; |
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85 } |
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86 else { |
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87 if (vidOpts.resizable) flags |= SDL_RESIZABLE; |
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88 if (vidOpts.noFrame) flags |= SDL_NOFRAME; |
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89 w = vidOpts.windowW; |
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90 h = vidOpts.windowH; |
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91 } |
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92 |
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93 // OpenGL attributes |
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94 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5); |
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95 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 6); |
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96 SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5); |
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97 SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16); |
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98 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1); |
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99 |
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100 // Open a window |
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101 if (setWindow (w, h)) { |
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102 throw new InitException ("Failed to open a window"); |
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103 } |
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104 |
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105 /* Now (must be done after GL context is created) we can try to load later version. |
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106 * The initial loading provides opengl 1.1 features. |
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107 * |
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108 * 1.4 is now used for glBlendColor (coloured text). |
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109 * |
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110 * Currently the latest version used is 1.3; adjust this as necessary. However, before using |
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111 * features from any OpenGL version > 1.1 a check must be made on what was loaded by calling |
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112 * DerelictGL.availableVersion(). Note that availableVersion() could be used instead to load |
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113 * the highest supported version but this way we know what we're getting. */ |
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114 if (DerelictGL.availableVersion < GLVersion.Version13) { |
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115 throw new InitException ("Required at least OpenGL 1.3; didn't get this."); |
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116 } |
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117 /+try { |
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118 DerelictGL.loadVersions(GLVersion.Version14); |
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119 } catch (SharedLibProcLoadException e) { |
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120 logger.warn ("Loading OpenGL version 1.4 failed:"); |
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121 logger.warn (e.msg); |
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122 |
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123 setInitFailure (); |
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124 return; |
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125 }+/ |
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126 |
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127 // OpenGL stuff: |
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128 glDisable(GL_LIGHTING); |
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129 glDisable(GL_DEPTH_TEST); |
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130 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
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131 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
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132 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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133 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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134 glEnable(GL_TEXTURE_2D); |
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135 glShadeModel(GL_SMOOTH); |
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136 |
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137 glClearColor (0.0f, 0.0f, 0.0f, 0.0f); |
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138 |
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139 glMatrixMode(GL_MODELVIEW); |
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140 glLoadIdentity(); |
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141 |
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142 // Used for font rendering: |
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143 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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144 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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145 //NOTE: wrap mode may have an effect, but shouldn't be noticed... |
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146 |
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147 // Window-manager settings |
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148 SDL_WM_SetCaption (toStringz ("mde"), null); |
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149 // SDL_WM_GrabInput (use later) |
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150 //END Create window and initialize OpenGL |
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151 return StageState.ACTIVE; |
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152 } |
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153 |
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154 |
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155 /** Called when a resize event occurs (when the window manager resizes the window). */ |
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156 void resizeEvent (int w, int h) { |
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157 // Save new size to config |
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158 if (vidOpts.fullscreen) { // probably resizeEvent only called when not fullscreen |
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159 vidOpts.set!(int) ("screenW", w); |
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160 vidOpts.set!(int) ("screenH", h); |
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161 } else { |
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162 vidOpts.set!(int) ("windowW", w); |
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163 vidOpts.set!(int) ("windowH", h); |
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164 } |
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165 |
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166 if (setWindow (w,h)) |
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167 imde.run = false; |
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168 } |
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169 |
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170 /** Add a drawable element to the screen (see IDrawable interface). |
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171 * |
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172 * Should be called before Init to get the initial size (sizeEvent is only called when the size |
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173 * is set). Currently no means to remove drawables, and not really designed for more than one. |
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174 */ |
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175 void addDrawable (IDrawable d) { |
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176 drawables ~= d; |
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177 } |
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178 |
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179 /** Drawing function */ |
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180 void draw (TimeSpan) { |
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181 glClear(GL_COLOR_BUFFER_BIT); |
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182 |
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183 foreach (d; drawables) { |
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184 try { |
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185 d.draw; |
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186 } catch (Exception e) { |
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187 logger.error ("Drawable failed to draw: "~e.msg); |
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188 } |
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189 } |
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190 |
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191 debug (drawGlyphCache) FontStyle.drawTexture; |
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192 |
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193 // Error check: |
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194 GLenum err = glGetError(); |
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195 while (err != GL_NO_ERROR) { |
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196 logger.error ("GL error: {}", err); |
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197 err = glGetError(); |
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198 } |
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199 |
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200 glFinish(); // Use Finish rather than Flush to make sure gl is ready to swap buffers |
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201 SDL_GL_SwapBuffers(); |
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202 } |
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203 |
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204 /** Set a new window size. Returns true on failure due to the different ways this must be |
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205 * handled. */ |
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206 private bool setWindow (int w, int h) { |
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207 foreach (d; drawables) { // Tell all drawables the new window size. |
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208 try { |
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209 d.sizeEvent (w,h); |
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210 } catch (Exception e) { |
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211 logger.error ("Drawable failed while setting size: "~e.msg); |
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212 } |
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213 } |
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214 |
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215 //debug logger.trace ("Setting video mode {}x{}, 32-bit, flags: {}", w,h,flags); |
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216 if (SDL_SetVideoMode (w, h, 32, flags) is null) { |
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217 logger.fatal ("Unable to set video mode:"); |
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218 char* msg = SDL_GetError (); |
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219 logger.fatal (msg ? fromStringz(msg) : "no reason available"); |
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220 |
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221 // Print a load of info: |
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222 logger.info ("Available video modes:"); |
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223 SDL_Rect** modes = SDL_ListModes (null, SDL_FULLSCREEN); |
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224 if (modes is null) logger.info ("None!"); |
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225 else if (modes is cast(SDL_Rect**) -1) logger.info ("All modes are available"); |
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226 else { |
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227 for (uint i = 0; modes[i] !is null; ++i) { |
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228 logger.info ("\t{}x{}", modes[i].w, modes[i].h); |
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229 } |
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230 } |
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231 |
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232 SDL_VideoInfo* vi = SDL_GetVideoInfo (); |
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233 if (vi !is null) { |
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234 logger.info ("Video info:"); |
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235 logger.info ("Hardware surface support: "~ (vi.flags & SDL_HWSURFACE ? "yes" : "no")); |
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236 logger.info ("Video memory: {}", vi.video_mem); |
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237 |
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238 if (vi.vfmt !is null) { |
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239 logger.info ("Best video mode:"); |
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240 logger.info ("Bits per pixel: {}", vi.vfmt.BitsPerPixel); |
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241 } |
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242 } |
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243 |
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244 return true; |
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245 } |
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246 |
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247 // Reset the projection and viewport |
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248 glMatrixMode (GL_PROJECTION); |
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249 glLoadIdentity (); |
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250 |
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251 glViewport (0,0,w,h); |
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252 |
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253 // Make the top-left the origin (see gui/GUI notes.txt): |
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254 // Note that this only affects vertex operations − direct rasterisation operations are |
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255 // unaffected! |
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256 glOrtho (0.0,w, h,0.0, -1.0, 1.0); |
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257 |
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258 glMatrixMode(GL_MODELVIEW); |
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259 return false; |
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260 } |
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261 |
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262 static this() { |
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263 logger = Log.getLogger ("mde.setup.Screen"); |
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264 |
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265 vidOpts = new OptionsVideo; |
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266 Options.addOptionsClass (vidOpts, "video"); |
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267 } |
85
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268 |
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269 // DATA: |
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270 private: |
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271 uint flags = 0; |
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272 IDrawable[] drawables; |
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273 Logger logger; |
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274 OptionsVideo vidOpts; |
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275 } |