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https://github.com/izzy2lost/PSX1.git
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notaz
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* Pcsx - Pc Psx Emulator
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* Copyright (C) 1999-2016 Pcsx Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses>.
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*/
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/*
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* q: Why bother with GPU stuff in a plugin-based emu core?
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* a: mostly because of busy bits, we have all the needed timing info
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* that GPU plugin doesn't.
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*/
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#ifndef __GPU_H__
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#define __GPU_H__
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#include <stdint.h>
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typedef struct GPUFreeze {
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uint32_t ulFreezeVersion;
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uint32_t ulStatus;
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uint32_t ulControl[256];
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unsigned char psxVRam[1024*512*2];
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} GPUFreeze_t;
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#define PSXGPU_LCF (1u<<31)
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#define PSXGPU_nBUSY (1u<<26)
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#define PSXGPU_ILACE (1u<<22)
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#define PSXGPU_RGB24 (1u<<21)
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#define PSXGPU_DHEIGHT (1u<<19)
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#define PSXGPU_FIELD (1u<<13)
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// both must be set for interlace to work
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#define PSXGPU_ILACE_BITS (PSXGPU_ILACE | PSXGPU_DHEIGHT)
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#define HW_GPU_STATUS psxHu32ref(0x1814)
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// TODO: handle com too
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#define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY | PSXGPU_FIELD)
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#define gpuSyncPluginSR() { \
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HW_GPU_STATUS &= SWAP32(PSXGPU_TIMING_BITS); \
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HW_GPU_STATUS |= SWAP32(GPU_readStatus() & ~PSXGPU_TIMING_BITS); \
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}
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enum psx_gpu_state {
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PGS_VRAM_TRANSFER_START,
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PGS_VRAM_TRANSFER_END,
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PGS_PRIMITIVE_START, // for non-dma only
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};
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void gpu_state_change(int what, int cycles);
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#endif /* __GPU_H__ */
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