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source: Daodan/src/Daodan_GL.c@ 794

Last change on this file since 794 was 739, checked in by iritscen, 12 years ago
Fixed significant misspellings.
File size: 11.5 KB

Rev	Line
[326]	1	#include <windows.h>
	2	#include <math.h>
	3
	4	#include "Oni.h"
	5	#include "Daodan_Utility.h"
[677]	6	#include <GL/gl.h>
	7	#include <GL/glu.h>
	8	#include "Daodan_Win32.h"
[326]	9
[692]	10	#include "Daodan_GL.h"
	11	#include "Oni_GL.h"
[297]	12
[705]	13	static const M3tDisplayMode daodan_reslist[] =
	14	{
	15	{ 640, 480, 0, 0 },
	16	{ 720, 480, 0, 0 },
	17	{ 720, 576, 0, 0 },
	18	{ 768, 480, 0, 0 },
	19	{ 800, 480, 0, 0 },
	20	{ 800, 600, 0, 0 },
	21	{ 852, 480, 0, 0 },
	22	{ 856, 480, 0, 0 },
	23	{ 960, 540, 0, 0 },
	24	{ 960, 720, 0, 0 },
[316]	25	{ 1024, 576, 0, 0 },
	26	{ 1024, 600, 0, 0 },
	27	{ 1024, 640, 0, 0 },
[297]	28	{ 1024, 768, 0, 0 },
[316]	29	{ 1152, 768, 0, 0 },
	30	{ 1152, 864, 0, 0 },
	31	{ 1280, 720, 0, 0 },
	32	{ 1280, 768, 0, 0 },
	33	{ 1280, 800, 0, 0 },
	34	{ 1280, 960, 0, 0 },
[297]	35	{ 1280, 1024, 0, 0 },
[316]	36	{ 1366, 768, 0, 0 },
	37	{ 1400, 1050, 0, 0 },
	38	{ 1440, 900, 0, 0 },
	39	{ 1600, 900, 0, 0 },
[297]	40	{ 1600, 1200, 0, 0 },
	41	{ 1920, 1080, 0, 0 },
[340]	42	{ 1920, 1200, 0, 0 },
[316]	43	{ 1920, 1440, 0, 0 },
[297]	44	};
[326]	45
[705]	46	static DWORD window_style, window_exstyle;
[326]	47
[705]	48	// HACK: use additional device entries to store display modes. It would give us
	49	// 67 mode slots total (far more than enough). I absolutely have no idea where
	50	// Rossy got his 104 (it would take up to 0x660 bytes while the whole GL state
	51	// is only 0x63c bytes). Maybe it was just octal (67 + 1).
	52	// This hack would break (crash!) "m3_display_list" script command.
	53	#define DD_MAX_MODES ((offsetof(M3tDrawEngineCaps,__unknown) - \
	54	offsetof(M3tDrawEngineCaps,DisplayDevices) - \
	55	offsetof(M3tDisplayDevice,Modes)) / sizeof(M3tDisplayMode))
[326]	56
[705]	57	// Former daodan_resdepths.
	58	#define DD_MIN_DEPTH 16
	59
	60	unsigned short ONICALL DD_GLrEnumerateDisplayModes(M3tDisplayMode* modes)
[297]	61	{
	62	unsigned int vmodes = 0;
[677]	63	unsigned int screen_x = GetSystemMetrics(SM_CXSCREEN);
	64	unsigned int screen_y = GetSystemMetrics(SM_CYSCREEN);
[297]	65
[705]	66	unsigned int i;
	67	signed int j;
[297]	68
[342]	69	DDrStartupMessage("listing display modes");
[705]	70
	71	memset(modes, 0, sizeof(M3tDisplayMode) * DD_MAX_MODES);
	72
	73	if (M3gResolutionSwitch)
[297]	74	{
[705]	75	// Enumerate in -switch mode. "67 slots ought to be enough for anybody".
	76
	77	DEVMODE dm;
	78
	79	dm.dmSize = sizeof(dm);
	80	dm.dmDriverExtra = 0;
	81
	82	for (i = 0; EnumDisplaySettings(NULL, i, &dm); ++i)
	83	{
	84	if (dm.dmBitsPerPel < DD_MIN_DEPTH \|\| dm.dmPelsWidth < 640 \|\| dm.dmPelsHeight < 480)
	85	continue;
	86
	87	// Already exists? Search backwards as modes are sorted most of the times
	88	for (j = vmodes - 1; j >= 0; --j)
	89	if (modes[j].Width == dm.dmPelsWidth && modes[j].Height == dm.dmPelsHeight &&
	90	modes[j].Depth == dm.dmBitsPerPel)
	91	break;
	92
	93	if (j >= 0)
	94	continue; // We've found a match.
	95
	96	modes[vmodes].Width = dm.dmPelsWidth;
	97	modes[vmodes].Height = dm.dmPelsHeight;
	98	modes[vmodes].Depth = dm.dmBitsPerPel;
	99
	100	if (++vmodes >= DD_MAX_MODES)
	101	break;
	102	}
	103	}
	104	else
	105	{
[739]	106	// In -noswitch we put predefined window sizes which don't overlap
[705]	107	// deskbar(s) plus one "native" fullscreen mode.
	108
	109	unsigned int workarea_width, workarea_height, frame_width, frame_height;
	110	DWORD style, exstyle;
	111	RECT rc;
	112
	113	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, 0))
	114	{
	115	workarea_width = rc.right - rc.left;
	116	workarea_height = rc.bottom - rc.top;
	117	}
	118	else
	119	{
	120	workarea_width = screen_x;
	121	workarea_height = screen_y;
	122	}
	123
	124	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	125	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	126
	127	// Calculate additional width and height for window borders. Don't
	128	// bother with system metrics. Let Windows calculate this.
	129	rc.left = rc.top = 0;
	130	rc.right = rc.bottom = 300;
	131
	132	if (AdjustWindowRectEx(&rc, style, FALSE, exstyle))
	133	{
	134	frame_width = rc.right - rc.left - 300;
	135	frame_height = rc.bottom - rc.top - 300;
	136	}
	137	else
	138	{
	139	frame_width = 0;
	140	frame_height = 0;
	141	}
	142
	143	for (i = 0; i < sizeof(daodan_reslist) / sizeof(daodan_reslist[0]); ++i)
	144	{
	145	// Don't check the mode which has the same rect as screen. We would
	146	// add it later as a special case.
	147	if (daodan_reslist[i].Width == screen_x && daodan_reslist[i].Height == screen_y)
	148	continue;
	149
	150	if (daodan_reslist[i].Width + frame_width <= workarea_width &&
	151	daodan_reslist[i].Height + frame_height <= workarea_height)
[297]	152	{
[705]	153	modes[vmodes] = daodan_reslist[i];
	154	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	155
	156	if (++vmodes >= DD_MAX_MODES)
[340]	157	{
[705]	158	--vmodes; // Remove the last mode to make room for "fullscreen" mode.
	159	break;
[340]	160	}
[297]	161	}
[340]	162	}
[705]	163
	164	modes[vmodes].Width = GLgInitialMode.dmPelsWidth;
	165	modes[vmodes].Height = GLgInitialMode.dmPelsHeight;
	166	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	167	++vmodes;
[297]	168	}
[705]	169
	170	DDrStartupMessage("%u modes available:", vmodes);
	171	for (i = 0; i < vmodes; ++i)
	172	DDrStartupMessage(" %ux%ux%u", modes[i].Width, modes[i].Height, modes[i].Depth);
	173
[297]	174	return vmodes;
	175	}
[316]	176
[705]	177	// Sets a new display mode (if it is somehow different from a current mode).
	178	// NOTE: signature for this function was changed to simplify code.
	179	UUtBool DD_GLrPlatform_SetDisplayMode(M3tDisplayMode* mode)
[316]	180	{
[705]	181	if (mode->Height < 480)
	182	return UUcFalse;
[326]	183
	184	if (M3gResolutionSwitch)
	185	{
[705]	186	DEVMODE new_mode, cur_mode;
	187
	188	cur_mode.dmSize = sizeof(cur_mode);
	189	cur_mode.dmDriverExtra = 0;
	190
	191	// We don't need this check. Windows does this too (see CDS_RESET).
	192	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &cur_mode) \|\|
	193	cur_mode.dmPelsWidth != mode->Width \|\| cur_mode.dmPelsHeight != mode->Height \|\|
	194	cur_mode.dmBitsPerPel != mode->Depth)
	195	{
	196	new_mode.dmSize = sizeof(new_mode);
	197	new_mode.dmFields = DM_BITSPERPEL \| DM_PELSHEIGHT \| DM_PELSWIDTH;
	198	new_mode.dmPelsWidth = mode->Width;
	199	new_mode.dmPelsHeight = mode->Height;
	200	new_mode.dmBitsPerPel = mode->Depth;
	201
	202	if (ChangeDisplaySettings(&new_mode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
	203	return UUcFalse;
	204	}
[326]	205
[705]	206	// We didn't change window size in DD_GLrPlatform_Initialize so we need
	207	// to change it here.
	208	SetWindowPos(ONgPlatformData.Window, NULL, 0, 0, mode->Width, mode->Height,
	209	SWP_NOACTIVATE \| SWP_NOSENDCHANGING \| SWP_NOZORDER);
	210
	211	return UUcTrue;
	212	}
	213	else
	214	{
	215	unsigned screen_x, screen_y;
	216	DWORD style, exstyle, new_style, new_exstyle;
	217	DWORD flags;
	218	RECT rc, workarea_rc;
	219	POINT pt;
	220
	221	screen_x = GetSystemMetrics(SM_CXSCREEN);
	222	screen_y = GetSystemMetrics(SM_CYSCREEN);
	223
	224	GetClientRect(ONgPlatformData.Window, &rc);
[326]	225
[705]	226	// Don't do anything if the mode was not changed.
	227	if (rc.right == mode->Width && rc.bottom == mode->Height)
	228	return UUcTrue;
	229
	230	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	231	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	232	flags = SWP_NOACTIVATE \| SWP_NOZORDER;
	233
	234	// Remember initial window style to correctly restore from fullscreen.
	235	if (window_style == 0)
	236	{
	237	window_style = style;
	238	window_exstyle = exstyle;
	239	}
	240
	241	if (mode->Width == screen_x && mode->Height == screen_y)
	242	{
	243	// "Fullscreen" mode.
	244	new_exstyle = exstyle & ~(WS_EX_CLIENTEDGE \| WS_EX_DLGMODALFRAME \| WS_EX_STATICEDGE \| WS_EX_WINDOWEDGE);
	245	new_style = style & ~(WS_CAPTION \| WS_BORDER \| WS_THICKFRAME \| WS_DLGFRAME);
	246	new_style = new_style \| WS_POPUP;
	247	rc.left = 0;
	248	rc.top = 0;
	249	rc.right = mode->Width;
	250	rc.bottom = mode->Height;
	251	}
	252	else
	253	{
	254	if (opt_border)
	255	{
	256	pt.x = rc.left;
	257	pt.y = rc.top;
	258	ClientToScreen(ONgPlatformData.Window, &pt);
	259	}
	260	else
	261	{
	262	pt.x = screen_x / 2 - mode->Width / 2;
	263	pt.y = screen_y / 2 - mode->Height / 2;
	264	}
	265
	266	new_exstyle = window_exstyle;
	267	new_style = window_style;
	268	rc.left = pt.x;
	269	rc.top = pt.y;
	270	rc.right = rc.left + mode->Width;
	271	rc.bottom = rc.top + mode->Height;
	272
	273	AdjustWindowRectEx(&rc, new_style, FALSE, new_exstyle);
	274
	275	// Convert to width and height.
	276	rc.right -= rc.left;
	277	rc.bottom -= rc.top;
	278
	279	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &workarea_rc, 0))
	280	{
	281	// We try to keep window position, but we should prevent window
	282	// from going off screen.
	283
	284	if (rc.left + rc.right > workarea_rc.right)
	285	rc.left = workarea_rc.right - rc.right;
	286	if (rc.top + rc.bottom > workarea_rc.bottom)
	287	rc.top = workarea_rc.bottom - rc.bottom;
	288
	289	// Titlebar should always be visible.
	290
	291	if (rc.left < workarea_rc.left)
	292	rc.left = workarea_rc.left;
	293	if (rc.top < workarea_rc.top)
	294	rc.top = workarea_rc.top;
	295	}
	296	}
	297
	298	if (new_style != style)
	299	{
	300	SetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE, (LONG_PTR) new_style);
	301	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	302	}
	303
	304	if (new_exstyle != exstyle)
	305	{
	306	SetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE, (LONG_PTR) new_exstyle);
	307	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	308	}
	309
	310	SetWindowPos(ONgPlatformData.Window, NULL, rc.left, rc.top, rc.right, rc.bottom, flags);
	311	return UUcTrue;
[326]	312	}
[705]	313	}
	314
	315	static void ONICALL DD_GLiGamma_Restore(void)
	316	{
	317	if (opt_gamma)
	318	{
	319	if (gl_api->wglSetDeviceGammaRamp3DFX)
	320	gl_api->wglSetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	321	else
	322	SetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	323	}
	324	}
	325
	326	static void ONICALL DD_GLiGamma_Initialize(void)
	327	{
	328	if (opt_gamma)
	329	{
	330	if (gl_api->wglSetDeviceGammaRamp3DFX)
	331	{
	332	UUrStartupMessage("Using 3dfx gamma adjustment");
	333	GLgGammaRampValid = gl_api->wglGetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	334	}
	335	else
	336	{
	337	UUrStartupMessage("Using Windows gamma adjustment");
	338	GLgGammaRampValid = GetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	339	}
	340
	341	M3rSetGamma(ONrPersist_GetGamma());
	342	}
[326]	343	else
	344	{
[705]	345	GLgGammaRampValid = FALSE;
[326]	346	}
	347	}
[705]	348
	349	// Disposes OpenGL engine. Called once.
	350	void ONICALL DD_GLrPlatform_Dispose(void)
[326]	351	{
[705]	352	DEVMODE dm;
[326]	353
[705]	354	DD_GLiGamma_Restore();
[326]	355
[705]	356	gl_api->wglMakeCurrent(NULL, NULL);
	357	gl_api->wglDeleteContext(gl->hGLRC);
	358	ReleaseDC(ONgPlatformData.Window, gl->hDC);
	359
	360	// Restore initial display mode if it does not match current mode.
	361
	362	dm.dmSize = sizeof(dm);
	363	dm.dmDriverExtra = 0;
	364
	365	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm) \|\|
	366	dm.dmPelsWidth != GLgInitialMode.dmPelsWidth \|\|
	367	dm.dmPelsHeight != GLgInitialMode.dmPelsHeight \|\|
	368	dm.dmBitsPerPel != GLgInitialMode.dmBitsPerPel)
[326]	369	{
[705]	370	ChangeDisplaySettings(&GLgInitialMode, 0);
	371	}
	372
	373	// (skipping SetWindowPos as it only adds flickering)
	374	gl_unload_library();
	375	}
	376
	377	// Initializes (and re-initializes) OpenGL.
	378	UUtBool ONICALL DD_GLrPlatform_Initialize(void)
	379	{
	380	static const M3tDisplayMode FallbackMode = { 640, 480, 16, 0 };
	381
	382	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	383	{
	384	gl->DisplayMode = FallbackMode;
[326]	385
[705]	386	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	387	{
	388	goto exit_err;
	389	}
[326]	390	}
	391
[705]	392	// (DD_GLrPlatform_SetDisplayMode updates a window rectangle for us)
[326]	393
[705]	394	if (!gl->hDC && !(gl->hDC = GetDC(ONgPlatformData.Window)))
[326]	395	{
[705]	396	goto exit_err;
	397	}
[326]	398
[705]	399	if (!M3gResolutionSwitch && opt_gamma)
	400	{
[739]	401	UUrStartupMessage("Ignoring gamma setting due to windowed mode");
[705]	402	opt_gamma = false;
[326]	403	}
[705]	404
	405	DD_GLiGamma_Initialize();
	406
	407	// This creates a rendering context too.
	408	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	409	{
[705]	410	if (gl->DisplayMode.Depth != 16)
[326]	411	{
[705]	412	gl->DisplayMode.Depth = 16;
	413	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
[326]	414	goto exit_err;
	415
[705]	416	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	417	goto exit_err;
	418	}
[705]	419	}
[326]	420
[705]	421	return UUcTrue;
[326]	422
	423	exit_err:
	424	AUrMessageBox(1, "Failed to initialize OpenGL contexts; Oni will now exit.");
	425	exit(0);
[473]	426	return 0;
[326]	427	}

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