[picodrive.git] / platform / linux / emu.c

/*\r
 * PicoDrive\r
 * (C) notaz, 2006-2010\r
 * (C) irixxxx, 2019-2024\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#include <stdio.h>\r
#include <unistd.h>\r
#include <sys/mman.h>\r
\r
#include "../libpicofe/menu.h"\r
#include "../libpicofe/plat.h"\r
#include "../common/emu.h"\r
#include "../common/arm_utils.h"\r
#include "../common/upscale.h"\r
#include "../common/version.h"\r
\r
#include <pico/pico_int.h>\r
\r
\r
const char *renderer_names[] = { "16bit accurate", " 8bit accurate", " 8bit fast", NULL };\r
const char *renderer_names32x[] = { "accurate", "faster", "fastest", NULL };\r
enum renderer_types { RT_16BIT, RT_8BIT_ACC, RT_8BIT_FAST, RT_COUNT };\r
\r
static int out_x, out_y, out_w, out_h;	// renderer output in render buffer\r
static int screen_x, screen_y, screen_w, screen_h; // final render destination \r
static int render_bg;			// force 16bit mode for bg render\r
static u16 *ghost_buf;			// backbuffer to simulate LCD ghosting\r
\r
void pemu_prep_defconfig(void)\r
{\r
}\r
\r
void pemu_validate_config(void)\r
{\r
#if !defined(DRC_SH2)\r
	PicoIn.opt &= ~POPT_EN_DRC;\r
#endif\r
}\r
\r
#define is_16bit_mode() \\r
	(currentConfig.renderer == RT_16BIT || (PicoIn.AHW & PAHW_32X) || render_bg)\r
\r
static int get_renderer(void)\r
{\r
	if (PicoIn.AHW & PAHW_32X)\r
		return currentConfig.renderer32x;\r
	else\r
		return currentConfig.renderer;\r
}\r
\r
static void change_renderer(int diff)\r
{\r
	int *r;\r
	if (PicoIn.AHW & PAHW_32X)\r
		r = &currentConfig.renderer32x;\r
	else\r
		r = &currentConfig.renderer;\r
	*r += diff;\r
\r
	if      (*r >= RT_COUNT)\r
		*r = 0;\r
	else if (*r < 0)\r
		*r = RT_COUNT - 1;\r
}\r
\r
static void draw_cd_leds(void)\r
{\r
	int led_reg, pitch, scr_offs, led_offs;\r
	led_reg = Pico_mcd->s68k_regs[0];\r
\r
	pitch = g_screen_ppitch;\r
	led_offs = 4;\r
	scr_offs = pitch * 2 + 4;\r
\r
#define p(x) px[(x)*2 >> 2] = px[((x)*2 >> 2) + 1]\r
	// 16-bit modes\r
	uint32_t *px = (uint32_t *)((short *)g_screen_ptr + scr_offs);\r
	uint32_t col_g = (led_reg & 2) ? 0x06000600 : 0;\r
	uint32_t col_r = (led_reg & 1) ? 0xc000c000 : 0;\r
	p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;\r
	p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;\r
#undef p\r
}\r
\r
static void draw_pico_ptr(void)\r
{\r
	int up = (PicoPicohw.pen_pos[0]|PicoPicohw.pen_pos[1]) & 0x8000;\r
	int o = (up ? 0x0000 : 0xffff), _ = (up ? 0xffff : 0x0000);\r
	int pitch = g_screen_ppitch;\r
	u16 *p = g_screen_ptr;\r
	int x = pico_pen_x, y = pico_pen_y;\r
	// storyware pages are actually squished, 2:1\r
	int h = (pico_inp_mode == 1 ? 160 : out_h);\r
	if (h < 224) y++;\r
\r
	x = (x * out_w * ((1ULL<<32) / 320 + 1)) >> 32;\r
	y = (y *     h * ((1ULL<<32) / 224 + 1)) >> 32;\r
	p += (screen_y+y)*pitch + (screen_x+x);\r
\r
	p[-pitch-1] ^= o; p[-pitch] ^= _; p[-pitch+1] ^= _; p[-pitch+2] ^= o;\r
	p[-1]       ^= _; p[0]      ^= o; p[1]        ^= o; p[2]        ^= _;\r
	p[pitch-1]  ^= _; p[pitch]  ^= o; p[pitch+1]  ^= o; p[pitch+2]  ^= _;\r
	p[2*pitch-1]^= o; p[2*pitch]^= _; p[2*pitch+1]^= _; p[2*pitch+2]^= o;\r
}\r
\r
/* render/screen buffer handling:\r
 * In 16 bit mode, render output is directly placed in the screen buffer.\r
 * SW scaling is handled in renderer (x) and in vscaling callbacks here (y).\r
 * In 8 bit modes, output goes to the internal Draw2FB buffer in alternate\r
 * renderer format (8 pix overscan at left/top/bottom), left aligned (DIS_32C).\r
 * It is converted to 16 bit and SW scaled in pemu_finalize_frame.\r
 *\r
 * HW scaling always aligns the image to the left/top, since selecting an area\r
 * for display isn't always possible.\r
 */\r
\r
static inline u16 *screen_buffer(u16 *buf)\r
{\r
	return buf + screen_y * g_screen_ppitch + screen_x -\r
			(out_y * g_screen_ppitch + out_x);\r
}\r
\r
void screen_blit(u16 *pd, int pp, u8* ps, int ss, u16 *pal)\r
{\r
	typedef void (*upscale_t)\r
			(u16 *di,int ds, u8 *si,int ss, int w,int h, u16 *pal);\r
	static const upscale_t upscale_256_224_hv[] = {\r
		upscale_rgb_nn_x_4_5_y_16_17,	upscale_rgb_snn_x_4_5_y_16_17,\r
		upscale_rgb_bl2_x_4_5_y_16_17,	upscale_rgb_bl4_x_4_5_y_16_17,\r
	};\r
	static const upscale_t upscale_256_____h[] = {\r
		upscale_rgb_nn_x_4_5,		upscale_rgb_snn_x_4_5,\r
		upscale_rgb_bl2_x_4_5,		upscale_rgb_bl4_x_4_5,\r
	};\r
	static const upscale_t upscale_____224_v[] = {\r
		upscale_rgb_nn_y_16_17,		upscale_rgb_snn_y_16_17,\r
		upscale_rgb_bl2_y_16_17,	upscale_rgb_bl4_y_16_17,\r
	};\r
	static const upscale_t upscale_160_144_hv[] = {\r
		upscale_rgb_nn_x_1_2_y_3_5,	upscale_rgb_nn_x_1_2_y_3_5,\r
		upscale_rgb_bl2_x_1_2_y_3_5,	upscale_rgb_bl4_x_1_2_y_3_5,\r
	};\r
	static const upscale_t upscale_160_____h[] = {\r
		upscale_rgb_nn_x_1_2,		upscale_rgb_nn_x_1_2,\r
		upscale_rgb_bl2_x_1_2,		upscale_rgb_bl2_x_1_2,\r
	};\r
	static const upscale_t upscale_____144_v[] = {\r
		upscale_rgb_nn_y_3_5,		upscale_rgb_nn_y_3_5,\r
		upscale_rgb_bl2_y_3_5,		upscale_rgb_bl4_y_3_5,\r
	};\r
	const upscale_t *upscale;\r
	int y;\r
\r
	// handle software upscaling\r
	upscale = NULL;\r
	if (currentConfig.scaling == EOPT_SCALE_SW && out_w <= 256) {\r
	    if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)\r
		// h+v scaling\r
		upscale = out_w >= 240 ? upscale_256_224_hv: upscale_160_144_hv;\r
	    else\r
		// h scaling\r
		upscale = out_w >= 240 ? upscale_256_____h : upscale_160_____h;\r
	} else if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)\r
		// v scaling\r
		upscale = out_w >= 240 ? upscale_____224_v : upscale_____144_v;\r
	if (!upscale) {\r
		// no scaling\r
		for (y = 0; y < out_h; y++)\r
			h_copy(pd, pp, ps, 328, out_w, f_pal);\r
		return;\r
	}\r
\r
	upscale[currentConfig.filter & 0x3](pd, pp, ps, ss, out_w, out_h, pal);\r
}\r
\r
void pemu_finalize_frame(const char *fps, const char *notice)\r
{\r
	if (!is_16bit_mode()) {\r
		// convert the 8 bit CLUT output to 16 bit RGB\r
		u16 *pd = screen_buffer(g_screen_ptr) +\r
				out_y * g_screen_ppitch + out_x;\r
		u8  *ps = Pico.est.Draw2FB + out_y * 328 + out_x + 8;\r
\r
		PicoDrawUpdateHighPal();\r
\r
		if (out_w == 248 && currentConfig.scaling == EOPT_SCALE_SW)\r
			pd += (320 - out_w*320/256) / 2; // SMS with 1st tile blanked, recenter\r
		screen_blit(pd, g_screen_ppitch, ps, 328, Pico.est.HighPal);\r
	}\r
\r
	if (currentConfig.ghosting && out_h == 144) {\r
		// GG LCD ghosting emulation\r
		u16 *pd = screen_buffer(g_screen_ptr) +\r
				out_y * g_screen_ppitch + out_x;\r
		u16 *ps = ghost_buf;\r
		int y, h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
		int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
\r
		if (currentConfig.ghosting == 1)\r
			for (y = 0; y < h; y++) {\r
				v_blend((u32 *)pd, (u32 *)ps, w/2, p_075_round);\r
				pd += g_screen_ppitch;\r
				ps += w;\r
			}\r
		else\r
			for (y = 0; y < h; y++) {\r
				v_blend((u32 *)pd, (u32 *)ps, w/2, p_05_round);\r
				pd += g_screen_ppitch;\r
				ps += w;\r
			}\r
	}\r
\r
	if (PicoIn.AHW & PAHW_PICO) {\r
		int h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
		int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
		u16 *pd = screen_buffer(g_screen_ptr) + out_y*g_screen_ppitch + out_x;\r
\r
		if (pico_inp_mode)\r
			emu_pico_overlay(pd, w, h, g_screen_ppitch);\r
		if (pico_inp_mode /*== 2 || overlay*/)\r
			draw_pico_ptr();\r
	}\r
\r
	if (notice)\r
		emu_osd_text16(4, g_screen_height - 8, notice);\r
	if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
		emu_osd_text16(g_screen_width - 60, g_screen_height - 8, fps);\r
	if ((PicoIn.AHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
		draw_cd_leds();\r
}\r
\r
void plat_video_set_buffer(void *buf)\r
{\r
	if (is_16bit_mode())\r
		PicoDrawSetOutBuf(screen_buffer(buf), g_screen_ppitch * 2);\r
}\r
\r
static void apply_renderer(void)\r
{\r
	PicoIn.opt |= POPT_DIS_32C_BORDER;\r
	PicoIn.opt &= ~(POPT_ALT_RENDERER|POPT_EN_SOFTSCALE);\r
	if (is_16bit_mode()) {\r
		if (currentConfig.scaling == EOPT_SCALE_SW)\r
			PicoIn.opt |= POPT_EN_SOFTSCALE;\r
		PicoIn.filter = currentConfig.filter;\r
	}\r
\r
	switch (get_renderer()) {\r
	case RT_16BIT:\r
		// 32X uses line mode for vscaling with accurate renderer, since\r
		// the MD VDP layer must be unscaled and merging the scaled 32X\r
		// image data will fail.\r
		PicoDrawSetOutFormat(PDF_RGB555,\r
			(PicoIn.AHW & PAHW_32X) && currentConfig.vscaling);\r
		PicoDrawSetOutBuf(screen_buffer(g_screen_ptr), g_screen_ppitch * 2);\r
		break;\r
	case RT_8BIT_ACC:\r
		// for simplification the 8 bit accurate renderer uses the same\r
		// storage format as the fast renderer\r
		PicoDrawSetOutFormat(PDF_8BIT, 0);\r
		PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);\r
		break;\r
	case RT_8BIT_FAST:\r
		PicoIn.opt |=  POPT_ALT_RENDERER;\r
		PicoDrawSetOutFormat(PDF_NONE, 0);\r
		break;\r
	}\r
\r
	if (PicoIn.AHW & PAHW_32X)\r
		PicoDrawSetOutBuf(screen_buffer(g_screen_ptr), g_screen_ppitch * 2);\r
	Pico.m.dirtyPal = 1;\r
}\r
\r
void plat_video_toggle_renderer(int change, int is_menu)\r
{\r
	change_renderer(change);\r
	plat_video_clear_buffers();\r
\r
	if (!is_menu) {\r
		apply_renderer();\r
\r
		if (PicoIn.AHW & PAHW_32X)\r
			emu_status_msg(renderer_names32x[get_renderer()]);\r
		else\r
			emu_status_msg(renderer_names[get_renderer()]);\r
	}\r
}\r
\r
void plat_status_msg_clear(void)\r
{\r
	plat_video_clear_status();\r
}\r
\r
void plat_status_msg_busy_next(const char *msg)\r
{\r
	plat_status_msg_clear();\r
	pemu_finalize_frame("", msg);\r
	plat_video_flip();\r
	emu_status_msg("");\r
	reset_timing = 1;\r
}\r
\r
void plat_status_msg_busy_first(const char *msg)\r
{\r
	plat_status_msg_busy_next(msg);\r
}\r
\r
void plat_update_volume(int has_changed, int is_up)\r
{\r
}\r
\r
void pemu_sound_start(void)\r
{\r
	emu_sound_start();\r
}\r
\r
void plat_debug_cat(char *str)\r
{\r
}\r
\r
void pemu_forced_frame(int no_scale, int do_emu)\r
{\r
	int hs = currentConfig.scaling, vs = currentConfig.vscaling;\r
\r
	// create centered and sw scaled (if scaling enabled) 16 bit output\r
	PicoIn.opt &= ~POPT_DIS_32C_BORDER;\r
	Pico.m.dirtyPal = 1;\r
	if (currentConfig.scaling)  currentConfig.scaling  = EOPT_SCALE_SW;\r
	if (currentConfig.vscaling) currentConfig.vscaling = EOPT_SCALE_SW;\r
\r
	// render a frame in 16 bit mode\r
	render_bg = 1;\r
	emu_cmn_forced_frame(no_scale, do_emu, screen_buffer(g_screen_ptr));\r
	render_bg = 0;\r
\r
	g_menubg_src_ptr = realloc(g_menubg_src_ptr, g_screen_height * g_screen_ppitch * 2);\r
	memcpy(g_menubg_src_ptr, g_screen_ptr, g_screen_height * g_screen_ppitch * 2);\r
	currentConfig.scaling = hs, currentConfig.vscaling = vs;\r
}\r
\r
/* vertical sw scaling, 16 bit mode */\r
static int vscale_state;\r
\r
static int cb_vscaling_begin(unsigned int line)\r
{\r
	// at start of new frame?\r
	if (line <= out_y) {\r
		// set y frame offset (see emu_video_mode_change)\r
		Pico.est.DrawLineDest = screen_buffer(g_screen_ptr) +\r
				(out_y * g_screen_ppitch /*+ out_x*/);\r
		vscale_state = 0;\r
		return out_y - line;\r
	} else if (line > out_y + out_h)\r
		return 1;\r
\r
	return 0;\r
}\r
\r
static int cb_vscaling_nop(unsigned int line)\r
{\r
	return 0;\r
}\r
\r
static int cb_vscaling_end(unsigned int line)\r
{\r
	u16 *dest = (u16 *)Pico.est.DrawLineDest + out_x;\r
	// helpers for 32 bit operation (2 pixels at once):\r
	u32 *dest32 = (u32 *)dest;\r
	int pp = g_screen_ppitch;\r
\r
	if (out_h == 144)\r
	  switch (currentConfig.filter) {\r
	  case 0: v_upscale_nn_3_5(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  default: v_upscale_snn_3_5(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  }\r
	else\r
	  switch (currentConfig.filter) {\r
	  case 3: v_upscale_bl4_16_17(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  case 2: v_upscale_bl2_16_17(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  case 1: v_upscale_snn_16_17(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  default: v_upscale_nn_16_17(dest32, pp/2, out_w/2, vscale_state);\r
		  break;\r
	  }\r
	Pico.est.DrawLineDest = (u16 *)dest32 - out_x;\r
	return 0;\r
}\r
\r
void emu_video_mode_change(int start_line, int line_count, int start_col, int col_count)\r
{\r
	// relative position in core fb and screen fb\r
	out_y = start_line; out_x = start_col;\r
	out_h = line_count; out_w = col_count;\r
\r
	if (! render_bg)\r
		plat_video_loop_prepare(); // recalculates g_screen_w/h\r
	PicoDrawSetCallbacks(NULL, NULL);\r
	// center output in screen\r
	screen_w = g_screen_width,  screen_x = (screen_w - out_w)/2;\r
	screen_h = g_screen_height, screen_y = (screen_h - out_h)/2;\r
\r
	switch (currentConfig.scaling) {\r
	case EOPT_SCALE_HW:\r
		// mind aspect ratio for SMS with 1st column blanked\r
		screen_w = (out_w == 248 ? 256 : out_w);\r
		screen_x = (screen_w - out_w)/2;\r
		break;\r
	case EOPT_SCALE_SW:\r
		screen_x = (screen_w - 320)/2;\r
		break;\r
	}\r
	switch (currentConfig.vscaling) {\r
	case EOPT_SCALE_HW:\r
		screen_h = (out_h < 224 && out_h > 144 ? 224 : out_h);\r
		screen_y = 0;\r
		// NTSC always has 224 visible lines, anything smaller has bars\r
		if (out_h < 224 && out_h > 144)\r
			screen_y += (224 - out_h)/2;\r
		// handle vertical centering for 16 bit mode\r
		if (is_16bit_mode())\r
			PicoDrawSetCallbacks(cb_vscaling_begin,cb_vscaling_nop);\r
		break;\r
	case EOPT_SCALE_SW:\r
		screen_y = (screen_h - 240)/2 + (out_h < 240 && out_h > 144);\r
		// NTSC always has 224 visible lines, anything smaller has bars\r
		if (out_h < 224 && out_h > 144)\r
			screen_y += (224 - out_h)/2;\r
		// in 16 bit mode sw scaling is divided between core and platform\r
		if (is_16bit_mode() && out_h < 240)\r
			PicoDrawSetCallbacks(cb_vscaling_begin,cb_vscaling_end);\r
		break;\r
	}\r
\r
	if (! render_bg)\r
		plat_video_set_size(screen_w, screen_h);\r
\r
	if (screen_w < g_screen_width)\r
		screen_x = (g_screen_width  - screen_w)/2;\r
	if (screen_h < g_screen_height) {\r
		screen_y = (g_screen_height - screen_h)/2;\r
		// NTSC always has 224 visible lines, anything smaller has bars\r
		if (out_h < 224 && out_h > 144)\r
			screen_y += (224 - out_h)/2;\r
	}\r
\r
	plat_video_set_buffer(g_screen_ptr);\r
\r
	// create a backing buffer for emulating the bad GG lcd display\r
	if (currentConfig.ghosting && out_h == 144) {\r
		int h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
		int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
		ghost_buf = realloc(ghost_buf, w * h * 2);\r
		memset(ghost_buf, 0, w * h * 2);\r
	}\r
\r
	// clear whole screen in all buffers\r
	if (!is_16bit_mode())\r
		memset32(Pico.est.Draw2FB, 0xe0e0e0e0, (320+8) * (8+240+8) / 4);\r
	plat_video_clear_buffers();\r
}\r
\r
void pemu_loop_prep(void)\r
{\r
	apply_renderer();\r
	plat_video_clear_buffers();\r
}\r
\r
void pemu_loop_end(void)\r
{\r
	/* do one more frame for menu bg */\r
	plat_video_set_shadow(320, 240);\r
	pemu_forced_frame(0, 1);\r
	g_menubg_src_w = g_screen_width;\r
	g_menubg_src_h = g_screen_height;\r
	g_menubg_src_pp = g_screen_ppitch;\r
	if (ghost_buf) {\r
		free(ghost_buf);\r
		ghost_buf = NULL;\r
	}\r
}\r
\r
void plat_wait_till_us(unsigned int us_to)\r
{\r
	unsigned int now;\r
\r
	now = plat_get_ticks_us();\r
\r
	while ((signed int)(us_to - now) > 512)\r
	{\r
		usleep(1024);\r
		now = plat_get_ticks_us();\r
	}\r
}\r
\r
void *plat_mem_get_for_drc(size_t size)\r
{\r
#ifdef MAP_JIT\r
	// newer versions of OSX, IOS or TvOS need this\r
	return plat_mmap(0, size, 1, 0);\r
#else\r
	return NULL;\r
#endif\r
}\r
Commit	Line	Data
cff531af	1	/*\r
	2	* PicoDrive\r
	3	* (C) notaz, 2006-2010\r
15cc45c0	4	* (C) irixxxx, 2019-2024\r
cff531af	5	*\r
	6	* This work is licensed under the terms of MAME license.\r
	7	* See COPYING file in the top-level directory.\r
	8	*/\r
697746df	9	\r
	10	#include <stdio.h>\r
	11	#include <unistd.h>\r
8b60ec30	12	#include <sys/mman.h>\r
697746df	13	\r
e743be20	14	#include "../libpicofe/menu.h"\r
e743be20	15	#include "../libpicofe/plat.h"\r
697746df	16	#include "../common/emu.h"\r
697746df	17	#include "../common/arm_utils.h"\r
d5d17782	18	#include "../common/upscale.h"\r
90f0dedf	19	#include "../common/version.h"\r
697746df	20	\r
	21	#include <pico/pico_int.h>\r
	22	\r
	23	\r
fcdefcf6	24	const char *renderer_names[] = { "16bit accurate", " 8bit accurate", " 8bit fast", NULL };\r
fcdefcf6	25	const char *renderer_names32x[] = { "accurate", "faster", "fastest", NULL };\r
5a681086	26	enum renderer_types { RT_16BIT, RT_8BIT_ACC, RT_8BIT_FAST, RT_COUNT };\r
697746df	27	\r
d5d17782	28	static int out_x, out_y, out_w, out_h; // renderer output in render buffer\r
	29	static int screen_x, screen_y, screen_w, screen_h; // final render destination \r
	30	static int render_bg; // force 16bit mode for bg render\r
f55ce7bf	31	static u16 *ghost_buf; // backbuffer to simulate LCD ghosting\r
697746df	32	\r
	33	void pemu_prep_defconfig(void)\r
	34	{\r
697746df	35	}\r
	36	\r
	37	void pemu_validate_config(void)\r
	38	{\r
31efd454	39	#if !defined(DRC_SH2)\r
93f9619e	40	PicoIn.opt &= ~POPT_EN_DRC;\r
05eb243d	41	#endif\r
697746df	42	}\r
697746df	43	\r
43f79c5b	44	#define is_16bit_mode() \\r
d5d17782	45	(currentConfig.renderer == RT_16BIT \|\| (PicoIn.AHW & PAHW_32X) \|\| render_bg)\r
43f79c5b	46	\r
	47	static int get_renderer(void)\r
	48	{\r
	49	if (PicoIn.AHW & PAHW_32X)\r
	50	return currentConfig.renderer32x;\r
	51	else\r
	52	return currentConfig.renderer;\r
	53	}\r
	54	\r
	55	static void change_renderer(int diff)\r
	56	{\r
	57	int *r;\r
	58	if (PicoIn.AHW & PAHW_32X)\r
	59	r = &currentConfig.renderer32x;\r
	60	else\r
	61	r = &currentConfig.renderer;\r
	62	*r += diff;\r
	63	\r
	64	if (*r >= RT_COUNT)\r
	65	*r = 0;\r
	66	else if (*r < 0)\r
	67	*r = RT_COUNT - 1;\r
	68	}\r
	69	\r
697746df	70	static void draw_cd_leds(void)\r
	71	{\r
	72	int led_reg, pitch, scr_offs, led_offs;\r
	73	led_reg = Pico_mcd->s68k_regs[0];\r
	74	\r
7a7265ee	75	pitch = g_screen_ppitch;\r
697746df	76	led_offs = 4;\r
	77	scr_offs = pitch * 2 + 4;\r
	78	\r
758abbeb	79	#define p(x) px[(x)2 >> 2] = px[((x)2 >> 2) + 1]\r
758abbeb	80	// 16-bit modes\r
f821bb70	81	uint32_t px = (uint32_t )((short *)g_screen_ptr + scr_offs);\r
	82	uint32_t col_g = (led_reg & 2) ? 0x06000600 : 0;\r
	83	uint32_t col_r = (led_reg & 1) ? 0xc000c000 : 0;\r
758abbeb	84	p(pitch0) = p(pitch1) = p(pitch*2) = col_g;\r
	85	p(pitch0 + led_offs) = p(pitch1 + led_offs) = p(pitch*2 + led_offs) = col_r;\r
	86	#undef p\r
697746df	87	}\r
697746df	88	\r
dca20eff	89	static void draw_pico_ptr(void)\r
dca20eff	90	{\r
c87e36d7	91	int up = (PicoPicohw.pen_pos[0]\|PicoPicohw.pen_pos[1]) & 0x8000;\r
c87e36d7	92	int o = (up ? 0x0000 : 0xffff), _ = (up ? 0xffff : 0x0000);\r
dca20eff	93	int pitch = g_screen_ppitch;\r
	94	u16 *p = g_screen_ptr;\r
	95	int x = pico_pen_x, y = pico_pen_y;\r
15cc45c0	96	// storyware pages are actually squished, 2:1\r
	97	int h = (pico_inp_mode == 1 ? 160 : out_h);\r
	98	if (h < 224) y++;\r
dca20eff	99	\r
c87e36d7	100	x = (x * out_w * ((1ULL<<32) / 320 + 1)) >> 32;\r
15cc45c0	101	y = (y * h * ((1ULL<<32) / 224 + 1)) >> 32;\r
dca20eff	102	p += (screen_y+y)*pitch + (screen_x+x);\r
dca20eff	103	\r
15cc45c0	104	p[-pitch-1] ^= o; p[-pitch] ^= _; p[-pitch+1] ^= _; p[-pitch+2] ^= o;\r
	105	p[-1] ^= _; p[0] ^= o; p[1] ^= o; p[2] ^= _;\r
	106	p[pitch-1] ^= _; p[pitch] ^= o; p[pitch+1] ^= o; p[pitch+2] ^= _;\r
	107	p[2pitch-1]^= o; p[2pitch]^= _; p[2pitch+1]^= _; p[2pitch+2]^= o;\r
dca20eff	108	}\r
dca20eff	109	\r
d5d17782	110	/* render/screen buffer handling:\r
	111	* In 16 bit mode, render output is directly placed in the screen buffer.\r
	112	* SW scaling is handled in renderer (x) and in vscaling callbacks here (y).\r
	113	* In 8 bit modes, output goes to the internal Draw2FB buffer in alternate\r
	114	* renderer format (8 pix overscan at left/top/bottom), left aligned (DIS_32C).\r
	115	* It is converted to 16 bit and SW scaled in pemu_finalize_frame.\r
	116	*\r
	117	* HW scaling always aligns the image to the left/top, since selecting an area\r
	118	* for display isn't always possible.\r
	119	*/\r
	120	\r
466fa079	121	static inline u16 screen_buffer(u16 buf)\r
d5d17782	122	{\r
ce79590a	123	return buf + screen_y * g_screen_ppitch + screen_x -\r
ce79590a	124	(out_y * g_screen_ppitch + out_x);\r
d5d17782	125	}\r
	126	\r
	127	void screen_blit(u16 pd, int pp, u8 ps, int ss, u16 *pal)\r
832faed3	128	{\r
d5d17782	129	typedef void (*upscale_t)\r
d5d17782	130	(u16 di,int ds, u8 si,int ss, int w,int h, u16 *pal);\r
466fa079	131	static const upscale_t upscale_256_224_hv[] = {\r
d5d17782	132	upscale_rgb_nn_x_4_5_y_16_17, upscale_rgb_snn_x_4_5_y_16_17,\r
	133	upscale_rgb_bl2_x_4_5_y_16_17, upscale_rgb_bl4_x_4_5_y_16_17,\r
	134	};\r
b01c1ec5	135	static const upscale_t upscale_256_____h[] = {\r
d5d17782	136	upscale_rgb_nn_x_4_5, upscale_rgb_snn_x_4_5,\r
	137	upscale_rgb_bl2_x_4_5, upscale_rgb_bl4_x_4_5,\r
	138	};\r
b01c1ec5	139	static const upscale_t upscale_____224_v[] = {\r
d5d17782	140	upscale_rgb_nn_y_16_17, upscale_rgb_snn_y_16_17,\r
	141	upscale_rgb_bl2_y_16_17, upscale_rgb_bl4_y_16_17,\r
	142	};\r
466fa079	143	static const upscale_t upscale_160_144_hv[] = {\r
	144	upscale_rgb_nn_x_1_2_y_3_5, upscale_rgb_nn_x_1_2_y_3_5,\r
	145	upscale_rgb_bl2_x_1_2_y_3_5, upscale_rgb_bl4_x_1_2_y_3_5,\r
	146	};\r
b01c1ec5	147	static const upscale_t upscale_160_____h[] = {\r
466fa079	148	upscale_rgb_nn_x_1_2, upscale_rgb_nn_x_1_2,\r
	149	upscale_rgb_bl2_x_1_2, upscale_rgb_bl2_x_1_2,\r
	150	};\r
b01c1ec5	151	static const upscale_t upscale_____144_v[] = {\r
466fa079	152	upscale_rgb_nn_y_3_5, upscale_rgb_nn_y_3_5,\r
	153	upscale_rgb_bl2_y_3_5, upscale_rgb_bl4_y_3_5,\r
	154	};\r
	155	const upscale_t *upscale;\r
d5d17782	156	int y;\r
	157	\r
	158	// handle software upscaling\r
	159	upscale = NULL;\r
b01c1ec5	160	if (currentConfig.scaling == EOPT_SCALE_SW && out_w <= 256) {\r
466fa079	161	if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)\r
466fa079	162	// h+v scaling\r
96948bdf	163	upscale = out_w >= 240 ? upscale_256_224_hv: upscale_160_144_hv;\r
466fa079	164	else\r
466fa079	165	// h scaling\r
96948bdf	166	upscale = out_w >= 240 ? upscale_256_____h : upscale_160_____h;\r
466fa079	167	} else if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)\r
466fa079	168	// v scaling\r
96948bdf	169	upscale = out_w >= 240 ? upscale_____224_v : upscale_____144_v;\r
466fa079	170	if (!upscale) {\r
d5d17782	171	// no scaling\r
	172	for (y = 0; y < out_h; y++)\r
	173	h_copy(pd, pp, ps, 328, out_w, f_pal);\r
	174	return;\r
	175	}\r
	176	\r
	177	upscale[currentConfig.filter & 0x3](pd, pp, ps, ss, out_w, out_h, pal);\r
832faed3	178	}\r
832faed3	179	\r
d08e7326	180	void pemu_finalize_frame(const char fps, const char notice)\r
697746df	181	{\r
43f79c5b	182	if (!is_16bit_mode()) {\r
43f79c5b	183	// convert the 8 bit CLUT output to 16 bit RGB\r
d5d17782	184	u16 *pd = screen_buffer(g_screen_ptr) +\r
ce79590a	185	out_y * g_screen_ppitch + out_x;\r
ce79590a	186	u8 ps = Pico.est.Draw2FB + out_y 328 + out_x + 8;\r
b1a047c9	187	\r
b1a047c9	188	PicoDrawUpdateHighPal();\r
d5d17782	189	\r
96948bdf	190	if (out_w == 248 && currentConfig.scaling == EOPT_SCALE_SW)\r
96948bdf	191	pd += (320 - out_w*320/256) / 2; // SMS with 1st tile blanked, recenter\r
d5d17782	192	screen_blit(pd, g_screen_ppitch, ps, 328, Pico.est.HighPal);\r
5a681086	193	}\r
5a681086	194	\r
f55ce7bf	195	if (currentConfig.ghosting && out_h == 144) {\r
	196	// GG LCD ghosting emulation\r
	197	u16 *pd = screen_buffer(g_screen_ptr) +\r
	198	out_y * g_screen_ppitch + out_x;\r
	199	u16 *ps = ghost_buf;\r
	200	int y, h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
	201	int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
15cc45c0	202	\r
44e4bf2b	203	if (currentConfig.ghosting == 1)\r
44e4bf2b	204	for (y = 0; y < h; y++) {\r
f55ce7bf	205	v_blend((u32 )pd, (u32 )ps, w/2, p_075_round);\r
44e4bf2b	206	pd += g_screen_ppitch;\r
	207	ps += w;\r
	208	}\r
	209	else\r
	210	for (y = 0; y < h; y++) {\r
f55ce7bf	211	v_blend((u32 )pd, (u32 )ps, w/2, p_05_round);\r
44e4bf2b	212	pd += g_screen_ppitch;\r
	213	ps += w;\r
	214	}\r
f55ce7bf	215	}\r
f55ce7bf	216	\r
15cc45c0	217	if (PicoIn.AHW & PAHW_PICO) {\r
	218	int h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
	219	int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
	220	u16 pd = screen_buffer(g_screen_ptr) + out_yg_screen_ppitch + out_x;\r
	221	\r
	222	if (pico_inp_mode)\r
	223	emu_pico_overlay(pd, w, h, g_screen_ppitch);\r
	224	if (pico_inp_mode /== 2 \|\| overlay/)\r
	225	draw_pico_ptr();\r
	226	}\r
	227	\r
758abbeb	228	if (notice)\r
	229	emu_osd_text16(4, g_screen_height - 8, notice);\r
	230	if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
	231	emu_osd_text16(g_screen_width - 60, g_screen_height - 8, fps);\r
93f9619e	232	if ((PicoIn.AHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
697746df	233	draw_cd_leds();\r
697746df	234	}\r
697746df	235	\r
758abbeb	236	void plat_video_set_buffer(void *buf)\r
758abbeb	237	{\r
43f79c5b	238	if (is_16bit_mode())\r
d5d17782	239	PicoDrawSetOutBuf(screen_buffer(buf), g_screen_ppitch * 2);\r
758abbeb	240	}\r
758abbeb	241	\r
5a681086	242	static void apply_renderer(void)\r
5a681086	243	{\r
96948bdf	244	PicoIn.opt \|= POPT_DIS_32C_BORDER;\r
96948bdf	245	PicoIn.opt &= ~(POPT_ALT_RENDERER\|POPT_EN_SOFTSCALE);\r
1bbe9abf	246	if (is_16bit_mode()) {\r
c3fcdf3f	247	if (currentConfig.scaling == EOPT_SCALE_SW)\r
1bbe9abf	248	PicoIn.opt \|= POPT_EN_SOFTSCALE;\r
c3fcdf3f	249	PicoIn.filter = currentConfig.filter;\r
96948bdf	250	}\r
d1ae0810	251	\r
43f79c5b	252	switch (get_renderer()) {\r
5a681086	253	case RT_16BIT:\r
d5d17782	254	// 32X uses line mode for vscaling with accurate renderer, since\r
	255	// the MD VDP layer must be unscaled and merging the scaled 32X\r
	256	// image data will fail.\r
	257	PicoDrawSetOutFormat(PDF_RGB555,\r
	258	(PicoIn.AHW & PAHW_32X) && currentConfig.vscaling);\r
	259	PicoDrawSetOutBuf(screen_buffer(g_screen_ptr), g_screen_ppitch * 2);\r
5a681086	260	break;\r
5a681086	261	case RT_8BIT_ACC:\r
d5d17782	262	// for simplification the 8 bit accurate renderer uses the same\r
d5d17782	263	// storage format as the fast renderer\r
5a681086	264	PicoDrawSetOutFormat(PDF_8BIT, 0);\r
35247900	265	PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);\r
5a681086	266	break;\r
5a681086	267	case RT_8BIT_FAST:\r
93f9619e	268	PicoIn.opt \|= POPT_ALT_RENDERER;\r
5a681086	269	PicoDrawSetOutFormat(PDF_NONE, 0);\r
	270	break;\r
	271	}\r
	272	\r
93f9619e	273	if (PicoIn.AHW & PAHW_32X)\r
d5d17782	274	PicoDrawSetOutBuf(screen_buffer(g_screen_ptr), g_screen_ppitch * 2);\r
b1a047c9	275	Pico.m.dirtyPal = 1;\r
5a681086	276	}\r
	277	\r
	278	void plat_video_toggle_renderer(int change, int is_menu)\r
697746df	279	{\r
43f79c5b	280	change_renderer(change);\r
ebd9c86a	281	plat_video_clear_buffers();\r
5a681086	282	\r
43f79c5b	283	if (!is_menu) {\r
5a681086	284	apply_renderer();\r
5a681086	285	\r
43f79c5b	286	if (PicoIn.AHW & PAHW_32X)\r
	287	emu_status_msg(renderer_names32x[get_renderer()]);\r
	288	else\r
	289	emu_status_msg(renderer_names[get_renderer()]);\r
	290	}\r
697746df	291	}\r
697746df	292	\r
697746df	293	void plat_status_msg_clear(void)\r
697746df	294	{\r
69b7b264	295	plat_video_clear_status();\r
697746df	296	}\r
	297	\r
	298	void plat_status_msg_busy_next(const char *msg)\r
	299	{\r
	300	plat_status_msg_clear();\r
d08e7326	301	pemu_finalize_frame("", msg);\r
d08e7326	302	plat_video_flip();\r
697746df	303	emu_status_msg("");\r
	304	reset_timing = 1;\r
	305	}\r
	306	\r
	307	void plat_status_msg_busy_first(const char *msg)\r
	308	{\r
697746df	309	plat_status_msg_busy_next(msg);\r
	310	}\r
	311	\r
	312	void plat_update_volume(int has_changed, int is_up)\r
	313	{\r
	314	}\r
	315	\r
d5d17782	316	void pemu_sound_start(void)\r
	317	{\r
	318	emu_sound_start();\r
	319	}\r
	320	\r
	321	void plat_debug_cat(char *str)\r
	322	{\r
	323	}\r
	324	\r
45285368	325	void pemu_forced_frame(int no_scale, int do_emu)\r
697746df	326	{\r
d5d17782	327	int hs = currentConfig.scaling, vs = currentConfig.vscaling;\r
832faed3	328	\r
d5d17782	329	// create centered and sw scaled (if scaling enabled) 16 bit output\r
627648e4	330	PicoIn.opt &= ~POPT_DIS_32C_BORDER;\r
697746df	331	Pico.m.dirtyPal = 1;\r
d5d17782	332	if (currentConfig.scaling) currentConfig.scaling = EOPT_SCALE_SW;\r
d5d17782	333	if (currentConfig.vscaling) currentConfig.vscaling = EOPT_SCALE_SW;\r
a4edca53	334	\r
d5d17782	335	// render a frame in 16 bit mode\r
d5d17782	336	render_bg = 1;\r
ce79590a	337	emu_cmn_forced_frame(no_scale, do_emu, screen_buffer(g_screen_ptr));\r
d5d17782	338	render_bg = 0;\r
697746df	339	\r
23e47196	340	g_menubg_src_ptr = realloc(g_menubg_src_ptr, g_screen_height * g_screen_ppitch * 2);\r
23e47196	341	memcpy(g_menubg_src_ptr, g_screen_ptr, g_screen_height * g_screen_ppitch * 2);\r
d5d17782	342	currentConfig.scaling = hs, currentConfig.vscaling = vs;\r
697746df	343	}\r
697746df	344	\r
d5d17782	345	/* vertical sw scaling, 16 bit mode */\r
	346	static int vscale_state;\r
	347	\r
	348	static int cb_vscaling_begin(unsigned int line)\r
697746df	349	{\r
d5d17782	350	// at start of new frame?\r
466fa079	351	if (line <= out_y) {\r
466fa079	352	// set y frame offset (see emu_video_mode_change)\r
ce79590a	353	Pico.est.DrawLineDest = screen_buffer(g_screen_ptr) +\r
466fa079	354	(out_y * g_screen_ppitch /+ out_x/);\r
d5d17782	355	vscale_state = 0;\r
466fa079	356	return out_y - line;\r
	357	} else if (line > out_y + out_h)\r
	358	return 1;\r
	359	\r
d5d17782	360	return 0;\r
697746df	361	}\r
697746df	362	\r
d5d17782	363	static int cb_vscaling_nop(unsigned int line)\r
	364	{\r
	365	return 0;\r
	366	}\r
	367	\r
	368	static int cb_vscaling_end(unsigned int line)\r
697746df	369	{\r
f55ce7bf	370	u16 dest = (u16 )Pico.est.DrawLineDest + out_x;\r
	371	// helpers for 32 bit operation (2 pixels at once):\r
	372	u32 dest32 = (u32 )dest;\r
	373	int pp = g_screen_ppitch;\r
466fa079	374	\r
	375	if (out_h == 144)\r
	376	switch (currentConfig.filter) {\r
f55ce7bf	377	case 0: v_upscale_nn_3_5(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	378	break;\r
f55ce7bf	379	default: v_upscale_snn_3_5(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	380	break;\r
	381	}\r
	382	else\r
	383	switch (currentConfig.filter) {\r
f55ce7bf	384	case 3: v_upscale_bl4_16_17(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	385	break;\r
f55ce7bf	386	case 2: v_upscale_bl2_16_17(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	387	break;\r
f55ce7bf	388	case 1: v_upscale_snn_16_17(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	389	break;\r
f55ce7bf	390	default: v_upscale_nn_16_17(dest32, pp/2, out_w/2, vscale_state);\r
466fa079	391	break;\r
466fa079	392	}\r
f55ce7bf	393	Pico.est.DrawLineDest = (u16 *)dest32 - out_x;\r
d5d17782	394	return 0;\r
697746df	395	}\r
697746df	396	\r
d5d17782	397	void emu_video_mode_change(int start_line, int line_count, int start_col, int col_count)\r
697746df	398	{\r
d5d17782	399	// relative position in core fb and screen fb\r
	400	out_y = start_line; out_x = start_col;\r
	401	out_h = line_count; out_w = col_count;\r
	402	\r
db8af214	403	if (! render_bg)\r
db8af214	404	plat_video_loop_prepare(); // recalculates g_screen_w/h\r
d5d17782	405	PicoDrawSetCallbacks(NULL, NULL);\r
ce79590a	406	// center output in screen\r
	407	screen_w = g_screen_width, screen_x = (screen_w - out_w)/2;\r
	408	screen_h = g_screen_height, screen_y = (screen_h - out_h)/2;\r
	409	\r
d5d17782	410	switch (currentConfig.scaling) {\r
d5d17782	411	case EOPT_SCALE_HW:\r
96948bdf	412	// mind aspect ratio for SMS with 1st column blanked\r
	413	screen_w = (out_w == 248 ? 256 : out_w);\r
	414	screen_x = (screen_w - out_w)/2;\r
d5d17782	415	break;\r
ce79590a	416	case EOPT_SCALE_SW:\r
ce79590a	417	screen_x = (screen_w - 320)/2;\r
d5d17782	418	break;\r
	419	}\r
	420	switch (currentConfig.vscaling) {\r
	421	case EOPT_SCALE_HW:\r
466fa079	422	screen_h = (out_h < 224 && out_h > 144 ? 224 : out_h);\r
ce79590a	423	screen_y = 0;\r
ce79590a	424	// NTSC always has 224 visible lines, anything smaller has bars\r
466fa079	425	if (out_h < 224 && out_h > 144)\r
ce79590a	426	screen_y += (224 - out_h)/2;\r
d5d17782	427	// handle vertical centering for 16 bit mode\r
d5d17782	428	if (is_16bit_mode())\r
ce79590a	429	PicoDrawSetCallbacks(cb_vscaling_begin,cb_vscaling_nop);\r
d5d17782	430	break;\r
d5d17782	431	case EOPT_SCALE_SW:\r
44e4bf2b	432	screen_y = (screen_h - 240)/2 + (out_h < 240 && out_h > 144);\r
d5d17782	433	// NTSC always has 224 visible lines, anything smaller has bars\r
466fa079	434	if (out_h < 224 && out_h > 144)\r
ce79590a	435	screen_y += (224 - out_h)/2;\r
d5d17782	436	// in 16 bit mode sw scaling is divided between core and platform\r
d5d17782	437	if (is_16bit_mode() && out_h < 240)\r
ce79590a	438	PicoDrawSetCallbacks(cb_vscaling_begin,cb_vscaling_end);\r
d5d17782	439	break;\r
	440	}\r
	441	\r
db8af214	442	if (! render_bg)\r
db8af214	443	plat_video_set_size(screen_w, screen_h);\r
d5d17782	444	\r
f8aaa200	445	if (screen_w < g_screen_width)\r
	446	screen_x = (g_screen_width - screen_w)/2;\r
	447	if (screen_h < g_screen_height) {\r
	448	screen_y = (g_screen_height - screen_h)/2;\r
	449	// NTSC always has 224 visible lines, anything smaller has bars\r
	450	if (out_h < 224 && out_h > 144)\r
	451	screen_y += (224 - out_h)/2;\r
	452	}\r
	453	\r
23e47196	454	plat_video_set_buffer(g_screen_ptr);\r
23e47196	455	\r
f55ce7bf	456	// create a backing buffer for emulating the bad GG lcd display\r
	457	if (currentConfig.ghosting && out_h == 144) {\r
	458	int h = currentConfig.vscaling == EOPT_SCALE_SW ? 240:out_h;\r
	459	int w = currentConfig.scaling == EOPT_SCALE_SW ? 320:out_w;\r
	460	ghost_buf = realloc(ghost_buf, w * h * 2);\r
	461	memset(ghost_buf, 0, w * h * 2);\r
	462	}\r
	463	\r
697746df	464	// clear whole screen in all buffers\r
43f79c5b	465	if (!is_16bit_mode())\r
7980d477	466	memset32(Pico.est.Draw2FB, 0xe0e0e0e0, (320+8) * (8+240+8) / 4);\r
69b7b264	467	plat_video_clear_buffers();\r
697746df	468	}\r
	469	\r
	470	void pemu_loop_prep(void)\r
	471	{\r
5a681086	472	apply_renderer();\r
69b7b264	473	plat_video_clear_buffers();\r
697746df	474	}\r
	475	\r
	476	void pemu_loop_end(void)\r
	477	{\r
697746df	478	/* do one more frame for menu bg */\r
5aa57006	479	plat_video_set_shadow(320, 240);\r
45285368	480	pemu_forced_frame(0, 1);\r
f8aaa200	481	g_menubg_src_w = g_screen_width;\r
	482	g_menubg_src_h = g_screen_height;\r
	483	g_menubg_src_pp = g_screen_ppitch;\r
f55ce7bf	484	if (ghost_buf) {\r
	485	free(ghost_buf);\r
	486	ghost_buf = NULL;\r
	487	}\r
697746df	488	}\r
	489	\r
	490	void plat_wait_till_us(unsigned int us_to)\r
	491	{\r
	492	unsigned int now;\r
	493	\r
	494	now = plat_get_ticks_us();\r
	495	\r
	496	while ((signed int)(us_to - now) > 512)\r
	497	{\r
	498	usleep(1024);\r
	499	now = plat_get_ticks_us();\r
	500	}\r
	501	}\r
	502	\r
df925153	503	void *plat_mem_get_for_drc(size_t size)\r
df925153	504	{\r
8b60ec30	505	#ifdef MAP_JIT\r
	506	// newer versions of OSX, IOS or TvOS need this\r
	507	return plat_mmap(0, size, 1, 0);\r
	508	#else\r
df925153	509	return NULL;\r
8b60ec30	510	#endif\r
df925153	511	}\r