[pcsx_rearmed.git] / libpcsxcore / gpu.h

/*  Pcsx - Pc Psx Emulator
 *  Copyright (C) 1999-2016  Pcsx Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses>.
 */

/*
 * q: Why bother with GPU stuff in a plugin-based emu core?
 * a: mostly because of busy bits, we have all the needed timing info
 *    that GPU plugin doesn't.
 */

#define PSXGPU_LCF     (1<<31)
#define PSXGPU_nBUSY   (1<<26)
#define PSXGPU_ILACE   (1<<22)
#define PSXGPU_DHEIGHT (1<<19)

// both must be set for interlace to work
#define PSXGPU_ILACE_BITS (PSXGPU_ILACE | PSXGPU_DHEIGHT)

#define HW_GPU_STATUS psxHu32ref(0x1814)

// TODO: handle com too
#define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY)

#define gpuSyncPluginSR() { \
	HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \
	HW_GPU_STATUS |= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \
}
Commit	Line	Data
c2502333	1	/* Pcsx - Pc Psx Emulator
	2	* Copyright (C) 1999-2016 Pcsx Team
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, see <http://www.gnu.org/licenses>.
	16	*/
ddbaf678	17
	18	/*
	19	* q: Why bother with GPU stuff in a plugin-based emu core?
	20	* a: mostly because of busy bits, we have all the needed timing info
	21	* that GPU plugin doesn't.
	22	*/
	23
0486fdc9	24	#define PSXGPU_LCF (1<<31)
	25	#define PSXGPU_nBUSY (1<<26)
	26	#define PSXGPU_ILACE (1<<22)
	27	#define PSXGPU_DHEIGHT (1<<19)
	28
	29	// both must be set for interlace to work
	30	#define PSXGPU_ILACE_BITS (PSXGPU_ILACE \| PSXGPU_DHEIGHT)
ddbaf678	31
	32	#define HW_GPU_STATUS psxHu32ref(0x1814)
	33
	34	// TODO: handle com too
	35	#define PSXGPU_TIMING_BITS (PSXGPU_LCF \| PSXGPU_nBUSY)
	36
	37	#define gpuSyncPluginSR() { \
	38	HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \
	39	HW_GPU_STATUS \|= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \
	40	}