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source: Daodan/src/Daodan_GL.c@ 891

Last change on this file since 891 was 838, checked in by alloc, 12 years ago

Daodan:

Fixes #40
Moved configuration parsing (ini, command line) into its own file

File size: 11.6 KB

Rev	Line
[326]	1	#include <windows.h>
	2	#include <math.h>
	3
	4	#include "Oni.h"
[838]	5	#include "Daodan_Config.h"
[326]	6	#include "Daodan_Utility.h"
[677]	7	#include <GL/gl.h>
	8	#include <GL/glu.h>
	9	#include "Daodan_Win32.h"
[326]	10
[692]	11	#include "Daodan_GL.h"
	12	#include "Oni_GL.h"
[297]	13
[705]	14	static const M3tDisplayMode daodan_reslist[] =
	15	{
	16	{ 640, 480, 0, 0 },
	17	{ 720, 480, 0, 0 },
	18	{ 720, 576, 0, 0 },
	19	{ 768, 480, 0, 0 },
	20	{ 800, 480, 0, 0 },
	21	{ 800, 600, 0, 0 },
	22	{ 852, 480, 0, 0 },
	23	{ 856, 480, 0, 0 },
	24	{ 960, 540, 0, 0 },
	25	{ 960, 720, 0, 0 },
[316]	26	{ 1024, 576, 0, 0 },
	27	{ 1024, 600, 0, 0 },
	28	{ 1024, 640, 0, 0 },
[297]	29	{ 1024, 768, 0, 0 },
[316]	30	{ 1152, 768, 0, 0 },
	31	{ 1152, 864, 0, 0 },
	32	{ 1280, 720, 0, 0 },
	33	{ 1280, 768, 0, 0 },
	34	{ 1280, 800, 0, 0 },
	35	{ 1280, 960, 0, 0 },
[297]	36	{ 1280, 1024, 0, 0 },
[316]	37	{ 1366, 768, 0, 0 },
	38	{ 1400, 1050, 0, 0 },
	39	{ 1440, 900, 0, 0 },
	40	{ 1600, 900, 0, 0 },
[297]	41	{ 1600, 1200, 0, 0 },
	42	{ 1920, 1080, 0, 0 },
[340]	43	{ 1920, 1200, 0, 0 },
[316]	44	{ 1920, 1440, 0, 0 },
[297]	45	};
[326]	46
[705]	47	static DWORD window_style, window_exstyle;
[326]	48
[705]	49	// HACK: use additional device entries to store display modes. It would give us
	50	// 67 mode slots total (far more than enough). I absolutely have no idea where
	51	// Rossy got his 104 (it would take up to 0x660 bytes while the whole GL state
	52	// is only 0x63c bytes). Maybe it was just octal (67 + 1).
	53	// This hack would break (crash!) "m3_display_list" script command.
	54	#define DD_MAX_MODES ((offsetof(M3tDrawEngineCaps,__unknown) - \
	55	offsetof(M3tDrawEngineCaps,DisplayDevices) - \
	56	offsetof(M3tDisplayDevice,Modes)) / sizeof(M3tDisplayMode))
[326]	57
[705]	58	// Former daodan_resdepths.
	59	#define DD_MIN_DEPTH 16
	60
	61	unsigned short ONICALL DD_GLrEnumerateDisplayModes(M3tDisplayMode* modes)
[297]	62	{
	63	unsigned int vmodes = 0;
[677]	64	unsigned int screen_x = GetSystemMetrics(SM_CXSCREEN);
	65	unsigned int screen_y = GetSystemMetrics(SM_CYSCREEN);
[297]	66
[705]	67	unsigned int i;
	68	signed int j;
[297]	69
[837]	70	DDrStartupMessage("Daodan: Listing display modes");
[705]	71
	72	memset(modes, 0, sizeof(M3tDisplayMode) * DD_MAX_MODES);
	73
	74	if (M3gResolutionSwitch)
[297]	75	{
[705]	76	// Enumerate in -switch mode. "67 slots ought to be enough for anybody".
	77
	78	DEVMODE dm;
	79
	80	dm.dmSize = sizeof(dm);
	81	dm.dmDriverExtra = 0;
	82
	83	for (i = 0; EnumDisplaySettings(NULL, i, &dm); ++i)
	84	{
	85	if (dm.dmBitsPerPel < DD_MIN_DEPTH \|\| dm.dmPelsWidth < 640 \|\| dm.dmPelsHeight < 480)
	86	continue;
	87
	88	// Already exists? Search backwards as modes are sorted most of the times
	89	for (j = vmodes - 1; j >= 0; --j)
	90	if (modes[j].Width == dm.dmPelsWidth && modes[j].Height == dm.dmPelsHeight &&
	91	modes[j].Depth == dm.dmBitsPerPel)
	92	break;
	93
	94	if (j >= 0)
	95	continue; // We've found a match.
	96
	97	modes[vmodes].Width = dm.dmPelsWidth;
	98	modes[vmodes].Height = dm.dmPelsHeight;
	99	modes[vmodes].Depth = dm.dmBitsPerPel;
	100
	101	if (++vmodes >= DD_MAX_MODES)
	102	break;
	103	}
	104	}
	105	else
	106	{
[739]	107	// In -noswitch we put predefined window sizes which don't overlap
[705]	108	// deskbar(s) plus one "native" fullscreen mode.
	109
	110	unsigned int workarea_width, workarea_height, frame_width, frame_height;
	111	DWORD style, exstyle;
	112	RECT rc;
	113
	114	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, 0))
	115	{
	116	workarea_width = rc.right - rc.left;
	117	workarea_height = rc.bottom - rc.top;
	118	}
	119	else
	120	{
	121	workarea_width = screen_x;
	122	workarea_height = screen_y;
	123	}
	124
	125	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	126	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	127
	128	// Calculate additional width and height for window borders. Don't
	129	// bother with system metrics. Let Windows calculate this.
	130	rc.left = rc.top = 0;
	131	rc.right = rc.bottom = 300;
	132
	133	if (AdjustWindowRectEx(&rc, style, FALSE, exstyle))
	134	{
	135	frame_width = rc.right - rc.left - 300;
	136	frame_height = rc.bottom - rc.top - 300;
	137	}
	138	else
	139	{
	140	frame_width = 0;
	141	frame_height = 0;
	142	}
	143
	144	for (i = 0; i < sizeof(daodan_reslist) / sizeof(daodan_reslist[0]); ++i)
	145	{
	146	// Don't check the mode which has the same rect as screen. We would
	147	// add it later as a special case.
	148	if (daodan_reslist[i].Width == screen_x && daodan_reslist[i].Height == screen_y)
	149	continue;
	150
	151	if (daodan_reslist[i].Width + frame_width <= workarea_width &&
	152	daodan_reslist[i].Height + frame_height <= workarea_height)
[297]	153	{
[705]	154	modes[vmodes] = daodan_reslist[i];
	155	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	156
	157	if (++vmodes >= DD_MAX_MODES)
[340]	158	{
[705]	159	--vmodes; // Remove the last mode to make room for "fullscreen" mode.
	160	break;
[340]	161	}
[297]	162	}
[340]	163	}
[705]	164
	165	modes[vmodes].Width = GLgInitialMode.dmPelsWidth;
	166	modes[vmodes].Height = GLgInitialMode.dmPelsHeight;
	167	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	168	++vmodes;
[297]	169	}
[705]	170
[837]	171	DDrStartupMessage("Daodan: %u modes available:", vmodes);
[705]	172	for (i = 0; i < vmodes; ++i)
[837]	173	DDrStartupMessage("Daodan: %ux%ux%u", modes[i].Width, modes[i].Height, modes[i].Depth);
[705]	174
[297]	175	return vmodes;
	176	}
[316]	177
[705]	178	// Sets a new display mode (if it is somehow different from a current mode).
	179	// NOTE: signature for this function was changed to simplify code.
	180	UUtBool DD_GLrPlatform_SetDisplayMode(M3tDisplayMode* mode)
[316]	181	{
[705]	182	if (mode->Height < 480)
	183	return UUcFalse;
[326]	184
	185	if (M3gResolutionSwitch)
	186	{
[705]	187	DEVMODE new_mode, cur_mode;
	188
	189	cur_mode.dmSize = sizeof(cur_mode);
	190	cur_mode.dmDriverExtra = 0;
	191
	192	// We don't need this check. Windows does this too (see CDS_RESET).
	193	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &cur_mode) \|\|
	194	cur_mode.dmPelsWidth != mode->Width \|\| cur_mode.dmPelsHeight != mode->Height \|\|
	195	cur_mode.dmBitsPerPel != mode->Depth)
	196	{
	197	new_mode.dmSize = sizeof(new_mode);
	198	new_mode.dmFields = DM_BITSPERPEL \| DM_PELSHEIGHT \| DM_PELSWIDTH;
	199	new_mode.dmPelsWidth = mode->Width;
	200	new_mode.dmPelsHeight = mode->Height;
	201	new_mode.dmBitsPerPel = mode->Depth;
	202
	203	if (ChangeDisplaySettings(&new_mode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
	204	return UUcFalse;
	205	}
[326]	206
[705]	207	// We didn't change window size in DD_GLrPlatform_Initialize so we need
	208	// to change it here.
	209	SetWindowPos(ONgPlatformData.Window, NULL, 0, 0, mode->Width, mode->Height,
	210	SWP_NOACTIVATE \| SWP_NOSENDCHANGING \| SWP_NOZORDER);
	211
	212	return UUcTrue;
	213	}
	214	else
	215	{
	216	unsigned screen_x, screen_y;
	217	DWORD style, exstyle, new_style, new_exstyle;
	218	DWORD flags;
	219	RECT rc, workarea_rc;
	220	POINT pt;
	221
	222	screen_x = GetSystemMetrics(SM_CXSCREEN);
	223	screen_y = GetSystemMetrics(SM_CYSCREEN);
	224
	225	GetClientRect(ONgPlatformData.Window, &rc);
[326]	226
[705]	227	// Don't do anything if the mode was not changed.
	228	if (rc.right == mode->Width && rc.bottom == mode->Height)
	229	return UUcTrue;
	230
	231	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	232	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	233	flags = SWP_NOACTIVATE \| SWP_NOZORDER;
	234
	235	// Remember initial window style to correctly restore from fullscreen.
	236	if (window_style == 0)
	237	{
	238	window_style = style;
	239	window_exstyle = exstyle;
	240	}
	241
	242	if (mode->Width == screen_x && mode->Height == screen_y)
	243	{
	244	// "Fullscreen" mode.
	245	new_exstyle = exstyle & ~(WS_EX_CLIENTEDGE \| WS_EX_DLGMODALFRAME \| WS_EX_STATICEDGE \| WS_EX_WINDOWEDGE);
	246	new_style = style & ~(WS_CAPTION \| WS_BORDER \| WS_THICKFRAME \| WS_DLGFRAME);
	247	new_style = new_style \| WS_POPUP;
	248	rc.left = 0;
	249	rc.top = 0;
	250	rc.right = mode->Width;
	251	rc.bottom = mode->Height;
	252	}
	253	else
	254	{
	255	if (opt_border)
	256	{
	257	pt.x = rc.left;
	258	pt.y = rc.top;
	259	ClientToScreen(ONgPlatformData.Window, &pt);
	260	}
	261	else
	262	{
	263	pt.x = screen_x / 2 - mode->Width / 2;
	264	pt.y = screen_y / 2 - mode->Height / 2;
	265	}
	266
	267	new_exstyle = window_exstyle;
	268	new_style = window_style;
	269	rc.left = pt.x;
	270	rc.top = pt.y;
	271	rc.right = rc.left + mode->Width;
	272	rc.bottom = rc.top + mode->Height;
	273
	274	AdjustWindowRectEx(&rc, new_style, FALSE, new_exstyle);
	275
	276	// Convert to width and height.
	277	rc.right -= rc.left;
	278	rc.bottom -= rc.top;
	279
	280	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &workarea_rc, 0))
	281	{
	282	// We try to keep window position, but we should prevent window
	283	// from going off screen.
	284
	285	if (rc.left + rc.right > workarea_rc.right)
	286	rc.left = workarea_rc.right - rc.right;
	287	if (rc.top + rc.bottom > workarea_rc.bottom)
	288	rc.top = workarea_rc.bottom - rc.bottom;
	289
	290	// Titlebar should always be visible.
	291
	292	if (rc.left < workarea_rc.left)
	293	rc.left = workarea_rc.left;
	294	if (rc.top < workarea_rc.top)
	295	rc.top = workarea_rc.top;
	296	}
	297	}
	298
	299	if (new_style != style)
	300	{
	301	SetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE, (LONG_PTR) new_style);
	302	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	303	}
	304
	305	if (new_exstyle != exstyle)
	306	{
	307	SetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE, (LONG_PTR) new_exstyle);
	308	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	309	}
	310
	311	SetWindowPos(ONgPlatformData.Window, NULL, rc.left, rc.top, rc.right, rc.bottom, flags);
	312	return UUcTrue;
[326]	313	}
[705]	314	}
	315
	316	static void ONICALL DD_GLiGamma_Restore(void)
	317	{
	318	if (opt_gamma)
	319	{
	320	if (gl_api->wglSetDeviceGammaRamp3DFX)
	321	gl_api->wglSetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	322	else
	323	SetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	324	}
	325	}
	326
	327	static void ONICALL DD_GLiGamma_Initialize(void)
	328	{
	329	if (opt_gamma)
	330	{
	331	if (gl_api->wglSetDeviceGammaRamp3DFX)
	332	{
[837]	333	UUrStartupMessage("Daodan: Using 3dfx gamma adjustment");
[705]	334	GLgGammaRampValid = gl_api->wglGetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	335	}
	336	else
	337	{
[837]	338	UUrStartupMessage("Daodan: Using Windows gamma adjustment");
[705]	339	GLgGammaRampValid = GetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	340	}
	341
	342	M3rSetGamma(ONrPersist_GetGamma());
	343	}
[326]	344	else
	345	{
[705]	346	GLgGammaRampValid = FALSE;
[326]	347	}
	348	}
[705]	349
	350	// Disposes OpenGL engine. Called once.
	351	void ONICALL DD_GLrPlatform_Dispose(void)
[326]	352	{
[705]	353	DEVMODE dm;
[326]	354
[705]	355	DD_GLiGamma_Restore();
[326]	356
[705]	357	gl_api->wglMakeCurrent(NULL, NULL);
	358	gl_api->wglDeleteContext(gl->hGLRC);
	359	ReleaseDC(ONgPlatformData.Window, gl->hDC);
	360
	361	// Restore initial display mode if it does not match current mode.
	362
	363	dm.dmSize = sizeof(dm);
	364	dm.dmDriverExtra = 0;
	365
	366	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm) \|\|
	367	dm.dmPelsWidth != GLgInitialMode.dmPelsWidth \|\|
	368	dm.dmPelsHeight != GLgInitialMode.dmPelsHeight \|\|
	369	dm.dmBitsPerPel != GLgInitialMode.dmBitsPerPel)
[326]	370	{
[705]	371	ChangeDisplaySettings(&GLgInitialMode, 0);
	372	}
	373
	374	// (skipping SetWindowPos as it only adds flickering)
	375	gl_unload_library();
	376	}
	377
	378	// Initializes (and re-initializes) OpenGL.
	379	UUtBool ONICALL DD_GLrPlatform_Initialize(void)
	380	{
	381	static const M3tDisplayMode FallbackMode = { 640, 480, 16, 0 };
	382
	383	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	384	{
	385	gl->DisplayMode = FallbackMode;
[326]	386
[705]	387	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	388	{
	389	goto exit_err;
	390	}
[326]	391	}
	392
[705]	393	// (DD_GLrPlatform_SetDisplayMode updates a window rectangle for us)
[326]	394
[705]	395	if (!gl->hDC && !(gl->hDC = GetDC(ONgPlatformData.Window)))
[326]	396	{
[705]	397	goto exit_err;
	398	}
[326]	399
[705]	400	if (!M3gResolutionSwitch && opt_gamma)
	401	{
[837]	402	UUrStartupMessage("Daodan: Ignoring gamma setting due to windowed mode");
[705]	403	opt_gamma = false;
[326]	404	}
[705]	405
	406	DD_GLiGamma_Initialize();
	407
	408	// This creates a rendering context too.
	409	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	410	{
[705]	411	if (gl->DisplayMode.Depth != 16)
[326]	412	{
[705]	413	gl->DisplayMode.Depth = 16;
	414	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
[326]	415	goto exit_err;
	416
[705]	417	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	418	goto exit_err;
	419	}
[705]	420	}
[326]	421
[705]	422	return UUcTrue;
[326]	423
	424	exit_err:
[837]	425	AUrMessageBox(1, "Daodan: Failed to initialize OpenGL contexts; Oni will now exit.");
[326]	426	exit(0);
[473]	427	return 0;
[326]	428	}

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