mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-09-21 11:51:48 +02:00
8b2c540544
This adds xfb support to the videosoftware backend, which increases it's accuracy and more imporantly, enables the usage of many homebrew apps which write directly to the xfb on the videosoftware backend. Conflicts: Source/Core/VideoBackends/Software/SWRenderer.cpp Source/Core/VideoBackends/Software/SWmain.cpp
622 lines
14 KiB
C++
622 lines
14 KiB
C++
// Copyright 2013 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.h"
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#include "EfbInterface.h"
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#include "BPMemLoader.h"
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#include "LookUpTables.h"
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#include "SWPixelEngine.h"
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#include "HW/Memmap.h"
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u8 efb[EFB_WIDTH*EFB_HEIGHT*6];
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namespace EfbInterface
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{
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inline u32 GetColorOffset(u16 x, u16 y)
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{
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return (x + y * EFB_WIDTH) * 3;
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}
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inline u32 GetDepthOffset(u16 x, u16 y)
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{
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return (x + y * EFB_WIDTH) * 3 + DEPTH_BUFFER_START;
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}
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void DoState(PointerWrap &p)
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{
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p.DoArray(efb, EFB_WIDTH*EFB_HEIGHT*6);
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}
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void SetPixelAlphaOnly(u32 offset, u8 a)
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{
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_Z24:
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case PIXELFMT_RGB565_Z16:
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// do nothing
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break;
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case PIXELFMT_RGBA6_Z24:
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{
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u32 a32 = a;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xffffffc0;
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val |= (a32 >> 2) & 0x0000003f;
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*dst = val;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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}
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void SetPixelColorOnly(u32 offset, u8 *rgb)
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{
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_Z24:
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{
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u32 src = *(u32*)rgb;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= src >> 8;
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*dst = val;
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}
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break;
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case PIXELFMT_RGBA6_Z24:
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{
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u32 src = *(u32*)rgb;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff00003f;
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val |= (src >> 4) & 0x00000fc0; // blue
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val |= (src >> 6) & 0x0003f000; // green
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val |= (src >> 8) & 0x00fc0000; // red
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*dst = val;
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}
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break;
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case PIXELFMT_RGB565_Z16:
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{
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INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
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u32 src = *(u32*)rgb;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= src >> 8;
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*dst = val;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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}
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void SetPixelAlphaColor(u32 offset, u8 *color)
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{
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_Z24:
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{
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u32 src = *(u32*)color;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= src >> 8;
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*dst = val;
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}
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break;
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case PIXELFMT_RGBA6_Z24:
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{
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u32 src = *(u32*)color;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= (src >> 2) & 0x0000003f; // alpha
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val |= (src >> 4) & 0x00000fc0; // blue
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val |= (src >> 6) & 0x0003f000; // green
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val |= (src >> 8) & 0x00fc0000; // red
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*dst = val;
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}
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break;
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case PIXELFMT_RGB565_Z16:
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{
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INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
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u32 src = *(u32*)color;
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= src >> 8;
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*dst = val;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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}
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void GetPixelColor(u32 offset, u8 *color)
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{
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_Z24:
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{
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u32 src = *(u32*)&efb[offset];
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u32 *dst = (u32*)color;
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u32 val = 0xff | ((src & 0x00ffffff) << 8);
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*dst = val;
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}
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break;
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case PIXELFMT_RGBA6_Z24:
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{
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u32 src = *(u32*)&efb[offset];
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color[ALP_C] = Convert6To8(src & 0x3f);
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color[BLU_C] = Convert6To8((src >> 6) & 0x3f);
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color[GRN_C] = Convert6To8((src >> 12) & 0x3f);
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color[RED_C] = Convert6To8((src >> 18) & 0x3f);
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}
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break;
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case PIXELFMT_RGB565_Z16:
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{
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INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
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u32 src = *(u32*)&efb[offset];
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u32 *dst = (u32*)color;
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u32 val = 0xff | ((src & 0x00ffffff) << 8);
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*dst = val;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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}
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void SetPixelDepth(u32 offset, u32 depth)
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{
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_RGBA6_Z24:
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case PIXELFMT_Z24:
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{
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= depth & 0x00ffffff;
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*dst = val;
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}
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break;
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case PIXELFMT_RGB565_Z16:
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{
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INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
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u32 *dst = (u32*)&efb[offset];
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u32 val = *dst & 0xff000000;
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val |= depth & 0x00ffffff;
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*dst = val;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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}
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u32 GetPixelDepth(u32 offset)
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{
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u32 depth = 0;
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switch (bpmem.zcontrol.pixel_format)
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{
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case PIXELFMT_RGB8_Z24:
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case PIXELFMT_RGBA6_Z24:
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case PIXELFMT_Z24:
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{
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depth = (*(u32*)&efb[offset]) & 0x00ffffff;
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}
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break;
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case PIXELFMT_RGB565_Z16:
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{
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INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
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depth = (*(u32*)&efb[offset]) & 0x00ffffff;
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}
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break;
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
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}
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return depth;
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}
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u32 GetSourceFactor(u8 *srcClr, u8 *dstClr, int mode)
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{
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switch (mode) {
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case 0: // zero
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return 0;
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case 1: // one
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return 0xffffffff;
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case 2: // dstclr
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return *(u32*)dstClr;
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case 3: // invdstclr
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return 0xffffffff - *(u32*)dstClr;
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case 4: // srcalpha
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{
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u8 alpha = srcClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 5: // invsrcalpha
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{
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u8 alpha = 0xff - srcClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 6: // dstalpha
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{
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u8 alpha = dstClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 7: // invdstalpha
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{
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u8 alpha = 0xff - dstClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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}
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return 0;
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}
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u32 GetDestinationFactor(u8 *srcClr, u8 *dstClr, int mode)
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{
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switch (mode) {
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case 0: // zero
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return 0;
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case 1: // one
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return 0xffffffff;
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case 2: // srcclr
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return *(u32*)srcClr;
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case 3: // invsrcclr
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return 0xffffffff - *(u32*)srcClr;
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case 4: // srcalpha
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{
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u8 alpha = srcClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 5: // invsrcalpha
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{
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u8 alpha = 0xff - srcClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 6: // dstalpha
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{
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u8 alpha = dstClr[ALP_C] & 0xff;
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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case 7: // invdstalpha
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{
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u8 alpha = 0xff - dstClr[ALP_C];
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u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
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return factor;
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}
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}
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return 0;
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}
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void BlendColor(u8 *srcClr, u8 *dstClr)
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{
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u32 srcFactor = GetSourceFactor(srcClr, dstClr, bpmem.blendmode.srcfactor);
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u32 dstFactor = GetDestinationFactor(srcClr, dstClr, bpmem.blendmode.dstfactor);
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for (int i = 0; i < 4; i++)
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{
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// add MSB of factors to make their range 0 -> 256
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u32 sf = (srcFactor & 0xff);
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sf += sf >> 7;
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u32 df = (dstFactor & 0xff);
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df += df >> 7;
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u32 color = (srcClr[i] * sf + dstClr[i] * df) >> 8;
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dstClr[i] = (color>255)?255:color;
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dstFactor >>= 8;
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srcFactor >>= 8;
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}
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}
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void LogicBlend(u32 srcClr, u32 &dstClr, int op)
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{
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switch (op)
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{
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case 0: // clear
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dstClr = 0;
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break;
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case 1: // and
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dstClr = srcClr & dstClr;
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break;
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case 2: // revand
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dstClr = srcClr & (~dstClr);
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break;
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case 3: // copy
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dstClr = srcClr;
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break;
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case 4: // invand
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dstClr = (~srcClr) & dstClr;
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break;
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case 5: // noop
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// Do nothing
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break;
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case 6: // xor
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dstClr = srcClr ^ dstClr;
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break;
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case 7: // or
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dstClr = srcClr | dstClr;
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break;
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case 8: // nor
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dstClr = ~(srcClr | dstClr);
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break;
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case 9: // equiv
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dstClr = ~(srcClr ^ dstClr);
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break;
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case 10: // inv
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dstClr = ~dstClr;
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break;
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case 11: // revor
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dstClr = srcClr | (~dstClr);
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break;
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case 12: // invcopy
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dstClr = ~srcClr;
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break;
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case 13: // invor
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dstClr = (~srcClr) | dstClr;
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break;
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case 14: // nand
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dstClr = ~(srcClr & dstClr);
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break;
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case 15: // set
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dstClr = 0xffffffff;
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break;
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}
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}
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void SubtractBlend(u8 *srcClr, u8 *dstClr)
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{
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for (int i = 0; i < 4; i++)
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{
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int c = (int)dstClr[i] - (int)srcClr[i];
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dstClr[i] = (c < 0)?0:c;
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}
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}
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void BlendTev(u16 x, u16 y, u8 *color)
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{
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u32 dstClr;
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u32 offset = GetColorOffset(x, y);
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u8 *dstClrPtr = (u8*)&dstClr;
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GetPixelColor(offset, dstClrPtr);
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if (bpmem.blendmode.blendenable)
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{
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if (bpmem.blendmode.subtract)
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SubtractBlend(color, dstClrPtr);
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else
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BlendColor(color, dstClrPtr);
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}
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else if (bpmem.blendmode.logicopenable)
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{
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LogicBlend(*((u32*)color), dstClr, bpmem.blendmode.logicmode);
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}
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else
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{
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dstClrPtr = color;
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}
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if (bpmem.dstalpha.enable)
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dstClrPtr[ALP_C] = bpmem.dstalpha.alpha;
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if (bpmem.blendmode.colorupdate)
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{
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if (bpmem.blendmode.alphaupdate)
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SetPixelAlphaColor(offset, dstClrPtr);
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else
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SetPixelColorOnly(offset, dstClrPtr);
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}
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else if (bpmem.blendmode.alphaupdate)
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{
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SetPixelAlphaOnly(offset, dstClrPtr[ALP_C]);
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}
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// branchless bounding box update
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SWPixelEngine::pereg.boxLeft = SWPixelEngine::pereg.boxLeft>x?x:SWPixelEngine::pereg.boxLeft;
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SWPixelEngine::pereg.boxRight = SWPixelEngine::pereg.boxRight<x?x:SWPixelEngine::pereg.boxRight;
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SWPixelEngine::pereg.boxTop = SWPixelEngine::pereg.boxTop>y?y:SWPixelEngine::pereg.boxTop;
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SWPixelEngine::pereg.boxBottom = SWPixelEngine::pereg.boxBottom<y?y:SWPixelEngine::pereg.boxBottom;
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}
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void SetColor(u16 x, u16 y, u8 *color)
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{
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u32 offset = GetColorOffset(x, y);
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if (bpmem.blendmode.colorupdate)
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{
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if (bpmem.blendmode.alphaupdate)
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SetPixelAlphaColor(offset, color);
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else
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SetPixelColorOnly(offset, color);
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}
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else if (bpmem.blendmode.alphaupdate)
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{
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SetPixelAlphaOnly(offset, color[ALP_C]);
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}
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}
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void SetDepth(u16 x, u16 y, u32 depth)
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{
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if (bpmem.zmode.updateenable)
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SetPixelDepth(GetDepthOffset(x, y), depth);
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}
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void GetColor(u16 x, u16 y, u8 *color)
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{
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u32 offset = GetColorOffset(x, y);
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GetPixelColor(offset, color);
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}
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// For internal used only, return a non-normalized value, which saves work later.
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void GetColorYUV(u16 x, u16 y, yuv444 *out)
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{
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u8 color[4];
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GetColor(x, y, color);
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// GameCube/Wii uses the BT.601 standard algorithm for converting to YCbCr; see
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// http://www.equasys.de/colorconversion.html#YCbCr-RGBColorFormatConversion
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out->Y = 0.257f * color[RED_C] + 0.504f * color[GRN_C] + 0.098f * color[BLU_C];
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out->U = -0.148f * color[RED_C] + -0.291f * color[GRN_C] + 0.439f * color[BLU_C];
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out->V = 0.439f * color[RED_C] + -0.368f * color[GRN_C] + -0.071f * color[BLU_C];
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}
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u32 GetDepth(u16 x, u16 y)
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{
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u32 offset = GetDepthOffset(x, y);
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return GetPixelDepth(offset);
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}
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u8 *GetPixelPointer(u16 x, u16 y, bool depth)
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{
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if (depth)
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return &efb[GetDepthOffset(x, y)];
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return &efb[GetColorOffset(x, y)];
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}
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void CopyToXFB(yuv422_packed* xfb_in_ram, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc, float Gamma) {
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// FIXME: We should do Gamma correction
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if (!xfb_in_ram)
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{
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WARN_LOG(VIDEO, "Tried to copy to invalid XFB address");
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return;
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}
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int left = sourceRc.left;
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int right = sourceRc.right;
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// this assumes copies will always start on an even (YU) pixel and the
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// copy always has an even width, which might not be true.
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if (left & 1 || right & 1) {
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WARN_LOG(VIDEO, "Trying to copy XFB to from unaligned EFB source");
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// this will show up as wrongly encoded
|
|
}
|
|
|
|
// Scanline buffer, leave room for borders
|
|
yuv444 scanline[EFB_WIDTH+2];
|
|
|
|
// our internal yuv444 type is not normalized, so black is {0, 0, 0} instead of {16, 128, 128}
|
|
yuv444 black;
|
|
black.Y = 0;
|
|
black.U = 0;
|
|
black.V = 0;
|
|
|
|
scanline[0] = black; // black border at start
|
|
scanline[right+1] = black; // black border at end
|
|
|
|
for (u16 y = sourceRc.top; y < sourceRc.bottom; y++)
|
|
{
|
|
// Get a scanline of YUV pixels in 4:4:4 format
|
|
|
|
for (int i = 1, x = left; x < right; i++, x++)
|
|
{
|
|
GetColorYUV(x, y, &scanline[i]);
|
|
}
|
|
|
|
// And Downsample them to 4:2:2
|
|
for (int i = 1, x = left; x < right; i+=2, x+=2)
|
|
{
|
|
// YU pixel
|
|
xfb_in_ram[x].Y = scanline[i].Y + 16;
|
|
// we mix our color difrences in 10 bit space so it will round more accurately
|
|
// U[i] = 1/4 * U[i-1] + 1/2 * U[i] + 1/4 * U[i+1]
|
|
xfb_in_ram[x].UV = 128 + ((scanline[i-1].U + (scanline[i].U << 1) + scanline[i+1].U) >> 2);
|
|
|
|
// YV pixel
|
|
xfb_in_ram[x+1].Y = scanline[i+1].Y + 16;
|
|
// V[i] = 1/4 * V[i-1] + 1/2 * V[i] + 1/4 * V[i+1]
|
|
xfb_in_ram[x+1].UV = 128 + ((scanline[i].V + (scanline[i+1].V << 1) + scanline[i+2].V) >> 2);
|
|
}
|
|
xfb_in_ram += fbWidth;
|
|
}
|
|
}
|
|
|
|
// Like CopyToXFB, but we copy directly into the opengl colour texture without going via Gamecube main memory or doing a yuyv conversion
|
|
void BypassXFB(u8* texture, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc, float Gamma) {
|
|
if(fbWidth*fbHeight > 640*568) {
|
|
ERROR_LOG(VIDEO, "Framebuffer is too large: %ix%i", fbWidth, fbHeight);
|
|
return;
|
|
}
|
|
|
|
u32 color;
|
|
u8* colorPtr = (u8*)&color;
|
|
u32* texturePtr = (u32*)texture;
|
|
u32 textureAddress = 0;
|
|
|
|
int left = sourceRc.left;
|
|
int right = sourceRc.right;
|
|
|
|
for (u16 y = sourceRc.top; y < sourceRc.bottom; y++)
|
|
{
|
|
for (u16 x = left; x < right; x++)
|
|
{
|
|
GetColor(x, y, colorPtr);
|
|
texturePtr[textureAddress++] = Common::swap32(color);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ZCompare(u16 x, u16 y, u32 z)
|
|
{
|
|
u32 offset = GetDepthOffset(x, y);
|
|
u32 depth = GetPixelDepth(offset);
|
|
|
|
bool pass;
|
|
|
|
switch (bpmem.zmode.func)
|
|
{
|
|
case COMPARE_NEVER:
|
|
pass = false;
|
|
break;
|
|
case COMPARE_LESS:
|
|
pass = z < depth;
|
|
break;
|
|
case COMPARE_EQUAL:
|
|
pass = z == depth;
|
|
break;
|
|
case COMPARE_LEQUAL:
|
|
pass = z <= depth;
|
|
break;
|
|
case COMPARE_GREATER:
|
|
pass = z > depth;
|
|
break;
|
|
case COMPARE_NEQUAL:
|
|
pass = z != depth;
|
|
break;
|
|
case COMPARE_GEQUAL:
|
|
pass = z >= depth;
|
|
break;
|
|
case COMPARE_ALWAYS:
|
|
pass = true;
|
|
break;
|
|
default:
|
|
pass = false;
|
|
ERROR_LOG(VIDEO, "Bad Z compare mode %i", bpmem.zmode.func);
|
|
}
|
|
|
|
if (pass && bpmem.zmode.updateenable)
|
|
{
|
|
SetPixelDepth(offset, z);
|
|
}
|
|
|
|
return pass;
|
|
}
|
|
}
|