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source: Daodan/src/Daodan_GL.c@ 992

Last change on this file since 992 was 992, checked in by alloc, 11 years ago
Daodan: Removed unused MSVC tree, build folders; reorganized source layout; removed Flatline from current Daodan
File size: 11.6 KB

Rev	Line
[326]	1	#include <windows.h>
	2	#include <math.h>
[992]	3	#include <GL/gl.h>
	4	#include <GL/glu.h>
[326]	5
[992]	6	#include "Oni/Oni.h"
	7
[838]	8	#include "Daodan_Config.h"
[326]	9	#include "Daodan_Utility.h"
[677]	10	#include "Daodan_Win32.h"
[692]	11	#include "Daodan_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
[837]	69	DDrStartupMessage("Daodan: 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;
[893]	86	if (dm.dmPelsWidth < dm.dmPelsHeight)
	87	continue;
[705]	88
	89	// Already exists? Search backwards as modes are sorted most of the times
	90	for (j = vmodes - 1; j >= 0; --j)
	91	if (modes[j].Width == dm.dmPelsWidth && modes[j].Height == dm.dmPelsHeight &&
	92	modes[j].Depth == dm.dmBitsPerPel)
	93	break;
	94
	95	if (j >= 0)
	96	continue; // We've found a match.
	97
	98	modes[vmodes].Width = dm.dmPelsWidth;
	99	modes[vmodes].Height = dm.dmPelsHeight;
	100	modes[vmodes].Depth = dm.dmBitsPerPel;
	101
	102	if (++vmodes >= DD_MAX_MODES)
	103	break;
	104	}
	105	}
	106	else
	107	{
[739]	108	// In -noswitch we put predefined window sizes which don't overlap
[705]	109	// deskbar(s) plus one "native" fullscreen mode.
	110
	111	unsigned int workarea_width, workarea_height, frame_width, frame_height;
	112	DWORD style, exstyle;
	113	RECT rc;
	114
	115	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, 0))
	116	{
	117	workarea_width = rc.right - rc.left;
	118	workarea_height = rc.bottom - rc.top;
	119	}
	120	else
	121	{
	122	workarea_width = screen_x;
	123	workarea_height = screen_y;
	124	}
	125
	126	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	127	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	128
	129	// Calculate additional width and height for window borders. Don't
	130	// bother with system metrics. Let Windows calculate this.
	131	rc.left = rc.top = 0;
	132	rc.right = rc.bottom = 300;
	133
	134	if (AdjustWindowRectEx(&rc, style, FALSE, exstyle))
	135	{
	136	frame_width = rc.right - rc.left - 300;
	137	frame_height = rc.bottom - rc.top - 300;
	138	}
	139	else
	140	{
	141	frame_width = 0;
	142	frame_height = 0;
	143	}
	144
	145	for (i = 0; i < sizeof(daodan_reslist) / sizeof(daodan_reslist[0]); ++i)
	146	{
	147	// Don't check the mode which has the same rect as screen. We would
	148	// add it later as a special case.
	149	if (daodan_reslist[i].Width == screen_x && daodan_reslist[i].Height == screen_y)
	150	continue;
	151
	152	if (daodan_reslist[i].Width + frame_width <= workarea_width &&
	153	daodan_reslist[i].Height + frame_height <= workarea_height)
[297]	154	{
[705]	155	modes[vmodes] = daodan_reslist[i];
	156	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	157
	158	if (++vmodes >= DD_MAX_MODES)
[340]	159	{
[705]	160	--vmodes; // Remove the last mode to make room for "fullscreen" mode.
	161	break;
[340]	162	}
[297]	163	}
[340]	164	}
[705]	165
	166	modes[vmodes].Width = GLgInitialMode.dmPelsWidth;
	167	modes[vmodes].Height = GLgInitialMode.dmPelsHeight;
	168	modes[vmodes].Depth = GLgInitialMode.dmBitsPerPel;
	169	++vmodes;
[297]	170	}
[705]	171
[837]	172	DDrStartupMessage("Daodan: %u modes available:", vmodes);
[705]	173	for (i = 0; i < vmodes; ++i)
[837]	174	DDrStartupMessage("Daodan: %ux%ux%u", modes[i].Width, modes[i].Height, modes[i].Depth);
[705]	175
[297]	176	return vmodes;
	177	}
[316]	178
[705]	179	// Sets a new display mode (if it is somehow different from a current mode).
	180	// NOTE: signature for this function was changed to simplify code.
	181	UUtBool DD_GLrPlatform_SetDisplayMode(M3tDisplayMode* mode)
[316]	182	{
[705]	183	if (mode->Height < 480)
	184	return UUcFalse;
[326]	185
	186	if (M3gResolutionSwitch)
	187	{
[705]	188	DEVMODE new_mode, cur_mode;
	189
	190	cur_mode.dmSize = sizeof(cur_mode);
	191	cur_mode.dmDriverExtra = 0;
	192
	193	// We don't need this check. Windows does this too (see CDS_RESET).
	194	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &cur_mode) \|\|
	195	cur_mode.dmPelsWidth != mode->Width \|\| cur_mode.dmPelsHeight != mode->Height \|\|
	196	cur_mode.dmBitsPerPel != mode->Depth)
	197	{
	198	new_mode.dmSize = sizeof(new_mode);
	199	new_mode.dmFields = DM_BITSPERPEL \| DM_PELSHEIGHT \| DM_PELSWIDTH;
	200	new_mode.dmPelsWidth = mode->Width;
	201	new_mode.dmPelsHeight = mode->Height;
	202	new_mode.dmBitsPerPel = mode->Depth;
	203
	204	if (ChangeDisplaySettings(&new_mode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
	205	return UUcFalse;
	206	}
[326]	207
[705]	208	// We didn't change window size in DD_GLrPlatform_Initialize so we need
	209	// to change it here.
	210	SetWindowPos(ONgPlatformData.Window, NULL, 0, 0, mode->Width, mode->Height,
	211	SWP_NOACTIVATE \| SWP_NOSENDCHANGING \| SWP_NOZORDER);
	212
	213	return UUcTrue;
	214	}
	215	else
	216	{
	217	unsigned screen_x, screen_y;
	218	DWORD style, exstyle, new_style, new_exstyle;
	219	DWORD flags;
	220	RECT rc, workarea_rc;
	221	POINT pt;
	222
	223	screen_x = GetSystemMetrics(SM_CXSCREEN);
	224	screen_y = GetSystemMetrics(SM_CYSCREEN);
	225
	226	GetClientRect(ONgPlatformData.Window, &rc);
[326]	227
[705]	228	// Don't do anything if the mode was not changed.
	229	if (rc.right == mode->Width && rc.bottom == mode->Height)
	230	return UUcTrue;
	231
	232	style = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE);
	233	exstyle = (DWORD) GetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE);
	234	flags = SWP_NOACTIVATE \| SWP_NOZORDER;
	235
	236	// Remember initial window style to correctly restore from fullscreen.
	237	if (window_style == 0)
	238	{
	239	window_style = style;
	240	window_exstyle = exstyle;
	241	}
	242
	243	if (mode->Width == screen_x && mode->Height == screen_y)
	244	{
	245	// "Fullscreen" mode.
	246	new_exstyle = exstyle & ~(WS_EX_CLIENTEDGE \| WS_EX_DLGMODALFRAME \| WS_EX_STATICEDGE \| WS_EX_WINDOWEDGE);
	247	new_style = style & ~(WS_CAPTION \| WS_BORDER \| WS_THICKFRAME \| WS_DLGFRAME);
	248	new_style = new_style \| WS_POPUP;
	249	rc.left = 0;
	250	rc.top = 0;
	251	rc.right = mode->Width;
	252	rc.bottom = mode->Height;
	253	}
	254	else
	255	{
	256	if (opt_border)
	257	{
	258	pt.x = rc.left;
	259	pt.y = rc.top;
	260	ClientToScreen(ONgPlatformData.Window, &pt);
	261	}
	262	else
	263	{
	264	pt.x = screen_x / 2 - mode->Width / 2;
	265	pt.y = screen_y / 2 - mode->Height / 2;
	266	}
	267
	268	new_exstyle = window_exstyle;
	269	new_style = window_style;
	270	rc.left = pt.x;
	271	rc.top = pt.y;
	272	rc.right = rc.left + mode->Width;
	273	rc.bottom = rc.top + mode->Height;
	274
	275	AdjustWindowRectEx(&rc, new_style, FALSE, new_exstyle);
	276
	277	// Convert to width and height.
	278	rc.right -= rc.left;
	279	rc.bottom -= rc.top;
	280
	281	if (SystemParametersInfo(SPI_GETWORKAREA, 0, &workarea_rc, 0))
	282	{
	283	// We try to keep window position, but we should prevent window
	284	// from going off screen.
	285
	286	if (rc.left + rc.right > workarea_rc.right)
	287	rc.left = workarea_rc.right - rc.right;
	288	if (rc.top + rc.bottom > workarea_rc.bottom)
	289	rc.top = workarea_rc.bottom - rc.bottom;
	290
	291	// Titlebar should always be visible.
	292
	293	if (rc.left < workarea_rc.left)
	294	rc.left = workarea_rc.left;
	295	if (rc.top < workarea_rc.top)
	296	rc.top = workarea_rc.top;
	297	}
	298	}
	299
	300	if (new_style != style)
	301	{
	302	SetWindowLongPtr(ONgPlatformData.Window, GWL_STYLE, (LONG_PTR) new_style);
	303	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	304	}
	305
	306	if (new_exstyle != exstyle)
	307	{
	308	SetWindowLongPtr(ONgPlatformData.Window, GWL_EXSTYLE, (LONG_PTR) new_exstyle);
	309	flags \|= SWP_FRAMECHANGED \| SWP_DRAWFRAME;
	310	}
	311
	312	SetWindowPos(ONgPlatformData.Window, NULL, rc.left, rc.top, rc.right, rc.bottom, flags);
	313	return UUcTrue;
[326]	314	}
[705]	315	}
	316
	317	static void ONICALL DD_GLiGamma_Restore(void)
	318	{
	319	if (opt_gamma)
	320	{
	321	if (gl_api->wglSetDeviceGammaRamp3DFX)
	322	gl_api->wglSetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	323	else
	324	SetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	325	}
	326	}
	327
	328	static void ONICALL DD_GLiGamma_Initialize(void)
	329	{
	330	if (opt_gamma)
	331	{
	332	if (gl_api->wglSetDeviceGammaRamp3DFX)
	333	{
[837]	334	UUrStartupMessage("Daodan: Using 3dfx gamma adjustment");
[705]	335	GLgGammaRampValid = gl_api->wglGetDeviceGammaRamp3DFX(gl->hDC, GLgInitialGammaRamp);
	336	}
	337	else
	338	{
[837]	339	UUrStartupMessage("Daodan: Using Windows gamma adjustment");
[705]	340	GLgGammaRampValid = GetDeviceGammaRamp(gl->hDC, GLgInitialGammaRamp);
	341	}
	342
	343	M3rSetGamma(ONrPersist_GetGamma());
	344	}
[326]	345	else
	346	{
[705]	347	GLgGammaRampValid = FALSE;
[326]	348	}
	349	}
[705]	350
	351	// Disposes OpenGL engine. Called once.
	352	void ONICALL DD_GLrPlatform_Dispose(void)
[326]	353	{
[705]	354	DEVMODE dm;
[326]	355
[705]	356	DD_GLiGamma_Restore();
[326]	357
[705]	358	gl_api->wglMakeCurrent(NULL, NULL);
	359	gl_api->wglDeleteContext(gl->hGLRC);
	360	ReleaseDC(ONgPlatformData.Window, gl->hDC);
	361
	362	// Restore initial display mode if it does not match current mode.
	363
	364	dm.dmSize = sizeof(dm);
	365	dm.dmDriverExtra = 0;
	366
	367	if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm) \|\|
	368	dm.dmPelsWidth != GLgInitialMode.dmPelsWidth \|\|
	369	dm.dmPelsHeight != GLgInitialMode.dmPelsHeight \|\|
	370	dm.dmBitsPerPel != GLgInitialMode.dmBitsPerPel)
[326]	371	{
[705]	372	ChangeDisplaySettings(&GLgInitialMode, 0);
	373	}
	374
	375	// (skipping SetWindowPos as it only adds flickering)
	376	gl_unload_library();
	377	}
	378
	379	// Initializes (and re-initializes) OpenGL.
	380	UUtBool ONICALL DD_GLrPlatform_Initialize(void)
	381	{
	382	static const M3tDisplayMode FallbackMode = { 640, 480, 16, 0 };
	383
	384	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	385	{
	386	gl->DisplayMode = FallbackMode;
[326]	387
[705]	388	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
	389	{
	390	goto exit_err;
	391	}
[326]	392	}
	393
[705]	394	// (DD_GLrPlatform_SetDisplayMode updates a window rectangle for us)
[326]	395
[705]	396	if (!gl->hDC && !(gl->hDC = GetDC(ONgPlatformData.Window)))
[326]	397	{
[705]	398	goto exit_err;
	399	}
[326]	400
[705]	401	if (!M3gResolutionSwitch && opt_gamma)
	402	{
[837]	403	UUrStartupMessage("Daodan: Ignoring gamma setting due to windowed mode");
[705]	404	opt_gamma = false;
[326]	405	}
[705]	406
	407	DD_GLiGamma_Initialize();
	408
	409	// This creates a rendering context too.
	410	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	411	{
[705]	412	if (gl->DisplayMode.Depth != 16)
[326]	413	{
[705]	414	gl->DisplayMode.Depth = 16;
	415	if (!DD_GLrPlatform_SetDisplayMode(&gl->DisplayMode))
[326]	416	goto exit_err;
	417
[705]	418	if (!gl_platform_set_pixel_format(gl->hDC))
[326]	419	goto exit_err;
	420	}
[705]	421	}
[326]	422
[705]	423	return UUcTrue;
[326]	424
	425	exit_err:
[837]	426	AUrMessageBox(1, "Daodan: Failed to initialize OpenGL contexts; Oni will now exit.");
[326]	427	exit(0);
[473]	428	return 0;
[326]	429	}

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