mirror of https://github.com/xemu-project/xemu.git
61 lines
2.0 KiB
C
61 lines
2.0 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) 2018-2024 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 "hw/xbox/nv2a/nv2a_int.h"
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uint32_t pgraph_rdi_read(PGRAPHState *pg, unsigned int select,
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unsigned int address)
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{
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uint32_t r = 0;
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switch(select) {
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case RDI_INDEX_VTX_CONSTANTS0:
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case RDI_INDEX_VTX_CONSTANTS1:
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assert((address / 4) < NV2A_VERTEXSHADER_CONSTANTS);
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r = pg->vsh_constants[address / 4][3 - address % 4];
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break;
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default:
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fprintf(stderr, "nv2a: unknown rdi read select 0x%x address 0x%x\n",
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select, address);
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assert(false);
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break;
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}
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return r;
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}
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void pgraph_rdi_write(PGRAPHState *pg, unsigned int select,
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unsigned int address, uint32_t val)
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{
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switch(select) {
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case RDI_INDEX_VTX_CONSTANTS0:
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case RDI_INDEX_VTX_CONSTANTS1:
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assert(false); /* Untested */
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assert((address / 4) < NV2A_VERTEXSHADER_CONSTANTS);
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pg->vsh_constants_dirty[address / 4] |=
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(val != pg->vsh_constants[address / 4][3 - address % 4]);
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pg->vsh_constants[address / 4][3 - address % 4] = val;
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break;
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default:
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NV2A_DPRINTF("unknown rdi write select 0x%x, address 0x%x, val 0x%08x\n",
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select, address, val);
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break;
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}
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}
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