mirror of https://github.com/xemu-project/xemu.git
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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* QEMU Geforce NV2A implementation
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*
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* Copyright (c) 2012 espes
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* Copyright (c) 2015 Jannik Vogel
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* Copyright (c) 2018-2021 Matt Borgerson
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "nv2a_int.h"
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static void pvideo_vga_invalidate(NV2AState *d)
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{
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int y1 = GET_MASK(d->pvideo.regs[NV_PVIDEO_POINT_OUT],
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NV_PVIDEO_POINT_OUT_Y);
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int y2 = y1 + GET_MASK(d->pvideo.regs[NV_PVIDEO_SIZE_OUT],
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NV_PVIDEO_SIZE_OUT_HEIGHT);
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NV2A_DPRINTF("pvideo_vga_invalidate %d %d\n", y1, y2);
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vga_invalidate_scanlines(&d->vga, y1, y2);
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}
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uint64_t pvideo_read(void *opaque, hwaddr addr, unsigned int size)
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{
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NV2AState *d = opaque;
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uint64_t r = 0;
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switch (addr) {
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case NV_PVIDEO_STOP:
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r = 0;
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break;
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default:
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r = d->pvideo.regs[addr];
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break;
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}
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nv2a_reg_log_read(NV_PVIDEO, addr, size, r);
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return r;
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}
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void pvideo_write(void *opaque, hwaddr addr, uint64_t val, unsigned int size)
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{
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NV2AState *d = opaque;
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nv2a_reg_log_write(NV_PVIDEO, addr, size, val);
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switch (addr) {
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case NV_PVIDEO_BUFFER:
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d->pvideo.regs[addr] = val;
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// d->vga.enable_overlay = true;
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pvideo_vga_invalidate(d);
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break;
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case NV_PVIDEO_STOP:
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// PVIDEO_STOP may be set many times during the course of video playback
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// but the overlay is only torn down if the 0th bit is 1.
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if (val & 0x01) {
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d->pvideo.regs[NV_PVIDEO_BUFFER] = 0;
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}
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// d->vga.enable_overlay = false;
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pvideo_vga_invalidate(d);
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break;
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default:
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d->pvideo.regs[addr] = val;
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break;
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}
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}
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