forked from dolphin-emu/dolphin
86 lines
2.0 KiB
C++
86 lines
2.0 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "Common/CommonFuncs.h"
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#include "Core/HW/Memmap.h"
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#include "VideoBackends/Software/Clipper.h"
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#include "VideoBackends/Software/CPMemLoader.h"
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#include "VideoBackends/Software/XFMemLoader.h"
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#include "VideoCommon/VideoCommon.h"
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void InitXFMemory()
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{
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memset(&xfmem, 0, sizeof(xfmem));
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}
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void XFWritten(u32 transferSize, u32 baseAddress)
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{
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u32 topAddress = baseAddress + transferSize;
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if (baseAddress <= 0x1026 && topAddress >= 0x1020)
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Clipper::SetViewOffset();
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// fix lights so invalid values don't trash the lighting computations
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if (baseAddress <= 0x067f && topAddress >= 0x0604)
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{
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u32* x = (u32*)xfmem.lights;
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// go through all lights
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for (int light = 0; light < 8; light++)
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{
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// skip to floating point values
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x += 4;
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for (int i = 0; i < 12; i++)
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{
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u32 xVal = *x;
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// if the exponent is 255 then the number is inf or nan
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if ((xVal & 0x7f800000) == 0x7f800000)
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*x = 0;
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x++;
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}
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}
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}
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}
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void SWLoadXFReg(u32 transferSize, u32 baseAddress, u32 *pData)
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{
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// do not allow writes past registers
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if (baseAddress + transferSize > 0x1058)
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{
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INFO_LOG(VIDEO, "XF load exceeds address space: %x %d bytes", baseAddress, transferSize);
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if (baseAddress >= 0x1058)
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transferSize = 0;
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else
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transferSize = 0x1058 - baseAddress;
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}
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// write to XF regs
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if (transferSize > 0)
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{
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memcpy((u32*)(&xfmem) + baseAddress, pData, transferSize * 4);
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XFWritten(transferSize, baseAddress);
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}
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}
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void SWLoadIndexedXF(u32 val, int array)
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{
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int index = val >> 16;
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int address = val & 0xFFF; //check mask
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int size = ((val >> 12) & 0xF) + 1;
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//load stuff from array to address in xf mem
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u32 *pData = (u32*)Memory::GetPointer(g_main_cp_state.array_bases[array] + g_main_cp_state.array_strides[array]*index);
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// byteswap data
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u32 buffer[16];
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for (int i = 0; i < size; ++i)
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buffer[i] = Common::swap32(*(pData + i));
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SWLoadXFReg(size, address, buffer);
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}
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