1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/*-----------------------------------------------------------------
LOG
GEM - Graphics Environment for Multimedia
The base functions and structures
Also includes gemwin header file
Copyright (c) 1997-2000 Mark Danks.mark@danks.org
Copyright (c) Günther Geiger. geiger@epy.co.at
Copyright (c) 2001-2011 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.at
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
-----------------------------------------------------------------*/
#ifndef _INCLUDE__GEM_GEM_MANAGER_H_
#define _INCLUDE__GEM_GEM_MANAGER_H_
#include "Gem/GemGL.h"
#include "Utils/GLUtil.h"
#include "Gem/ExportDef.h"
#include <string>
struct _symbol;
class gemhead;
class GemState;
class WindowInfo;
namespace gem
{
class Context;
};
/*-----------------------------------------------------------------
-------------------------------------------------------------------
CLASS
GemMan
A static class to create windows, etc.
DESCRIPTION
-----------------------------------------------------------------*/
class GEM_EXTERN GemMan
{
public:
//////////
// Should only be called once (usually by GemSetup)
static void initGem(void);
//////////
static void addObj(gemhead *obj, float priority);
//////////
static void removeObj(gemhead *obj, float priority);
//////////
// Is there a window.
static int windowExists(void);
//////////
// Are we rendering.
static int getRenderState(void);
//////////
// is there a context (has its meaning under X)
static void createContext(char* disp);
static int contextExists(void);
//////////
// If an object needs to know if the window changed.
// This is important for display lists.
static int windowNumber(void);
//////////
// reset to the initial state
static void resetState(void);
//////////
// Just send out one frame (if double buffered, will swap buffers)
static void render(void *);
static void renderChain(struct _symbol *head, bool start);
static void renderChain(struct _symbol *head, GemState *state);
//////////
// Start a clock to do rendering.
static void startRendering(void);
//////////
// Stop the clock to do rendering.
static void stopRendering(void);
//////////
// Create the window with the current parameters
static int createWindow(char* disp = 0);
//////////
// Destroy the window
static void destroyWindow(void);
// Destroy the window after a minimal delay
static void destroyWindowSoon(void);
//////////
// Swap the buffers.
// If single buffered, just clears the window
static void swapBuffers(void);
//////////
// Set the frame rate
static void frameRate(float framespersecond);
//////////
// Get the frame rate
static float getFramerate(void);
static int getProfileLevel(void);
static void getDimen(int*width, int*height);
static void getRealDimen(int*width, int*height);
static void getOffset(int*x, int*y);
//////////
// Turn on/off lighting
static void lightingOnOff(int state);
//////////
// Turn on/off cursor
static void cursorOnOff(int state);
//////////
// Turn on/off topmost position
static void topmostOnOff(int state);
//////////
// Request a lighting value - it is yours until you free it.
// The return can be 0, in which there are too many lights
// [in] specific - If you want a specific light. == 0 means that you don't care.
static GLenum requestLight(int specific = 0);
//////////
// Free a lighting value
static void freeLight(GLenum lightNum);
//////////
// Print out information
static void printInfo(void);
//////////
static void fillGemState(GemState &);
static int texture_rectangle_supported;
enum GemStackId { STACKMODELVIEW, STACKCOLOR, STACKTEXTURE, STACKPROJECTION };
static GLint maxStackDepth[4]; // for push/pop of matrix-stacks
static float m_perspect[6]; // values for the perspective matrix
static float m_lookat[9]; // values for the lookat matrix
// LATER make this private (right now it is needed in gem2pdp)
static int m_buffer; // single(1) or double(2)
private:
//////////
// computer and window information
static std::string m_title; // title to be displayed
static int m_fullscreen; // fullscreen (1) or not (0!)
static int
m_menuBar; // hide (0), show(1), hide but autoshow(-1)
static int m_secondscreen; // set the second screen
static int m_height; // window height
static int m_width; // window width
static int
m_w; // the real window width (reported by gemCreateWindow())
static int m_h; // the real window height
static int m_xoffset; // window offset (x)
static int m_yoffset; // window offset (y)
static int m_border; // window border
static int m_stereo; // stereoscopic
static int
m_profile; // off(0), on(1), w/o image caching(2)
static int m_rendering;
static float m_fog; // fog density
enum FOG_TYPE
{ FOG_OFF = 0, FOG_LINEAR, FOG_EXP, FOG_EXP2 };
static FOG_TYPE m_fogMode; // what kind of fog we have
static GLfloat m_fogColor[4]; // colour of the fog
static float m_fogStart; // start of the linear fog
static float m_fogEnd; // start of the linear fog
static float
m_motionBlur; // motion-blur factor in double-buffer mode
static float fps;
static int fsaa;
static bool pleaseDestroy;
#ifndef GEM_MULTICONTEXT
//////////
// Changing these variables is likely to crash GEM
// This is current rendering window information
// The window is created and destroyed by the user, so
// if there is no window, this will contain NULL pointers.
static WindowInfo &getWindowInfo(void);
//////////
// Changing these variables is likely to crash GEM
// This is constant rendering window information
// This window is always available (although not visible)
static WindowInfo &getConstWindowInfo(void);
#endif /* GEM_MULTICONTEXT */
static int createConstWindow(char* disp = 0);
// gemwin is allowed to modifying "global" window attributes
friend class gemwin;
friend class gem::Context;
static GLfloat m_clear_color[4]; // the frame buffer clear
static GLbitfield m_clear_mask; // the clear bitmask
static GLfloat m_mat_ambient[4]; // default ambient material
static GLfloat m_mat_specular[4]; // default specular material
static GLfloat m_mat_shininess; // default shininess material
static GLfloat m_stereoSep; // stereo separation
static GLfloat m_stereoFocal; // distance to focal point
static bool
m_stereoLine; // draw a line between 2 stereo-screens
static double
m_lastRenderTime; // the time of the last rendered frame
// gemwin should not touch the following member variables and member functions
static int m_windowState;
static int m_windowNumber;
static int m_windowContext;
static int m_cursor;
static int m_topmost;
static void windowInit(void);
static void windowCleanup(void);
static void resetValues(void);
static void resizeCallback(int xsize, int ysize, void*);
static void dispatchWinmessCallback(void);
//////////
// check for supported openGL extensions we might need
static void checkOpenGLExtensions(void);
};
#endif
|
