mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-09-22 12:21:41 +02:00
552c0d8404
This moves all the byte swapping utilities into a header named Swap.h. A dedicated header is much more preferable here due to the size of the code itself. In general usage throughout the codebase, CommonFuncs.h was generally only included for these functions anyway. These being in their own header avoids dumping the lesser used utilities into scope. As well as providing a localized area for more utilities related to byte swapping in the future (should they be needed). This also makes it nicer to identify which files depend on the byte swapping utilities in particular. Since this is a completely new header, moving the code uncovered a few indirect includes, as well as making some other inclusions unnecessary.
632 lines
15 KiB
C++
632 lines
15 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 "VideoBackends/Software/EfbInterface.h"
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#include <algorithm>
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#include <cstddef>
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#include <cstring>
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#include "Common/CommonTypes.h"
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#include "Common/Logging/Log.h"
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#include "Common/Swap.h"
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#include "VideoCommon/BPMemory.h"
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#include "VideoCommon/LookUpTables.h"
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#include "VideoCommon/PerfQueryBase.h"
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static u8 efb[EFB_WIDTH * EFB_HEIGHT * 6];
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namespace EfbInterface
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{
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u32 perf_values[PQ_NUM_MEMBERS];
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static 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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static 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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static 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 PEControl::RGB8_Z24:
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case PEControl::Z24:
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case PEControl::RGB565_Z16:
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// do nothing
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break;
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case PEControl::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", static_cast<int>(bpmem.zcontrol.pixel_format));
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}
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}
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static 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 PEControl::RGB8_Z24:
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case PEControl::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 PEControl::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 PEControl::RGB565_Z16:
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{
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WARN_LOG(VIDEO, "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", static_cast<int>(bpmem.zcontrol.pixel_format));
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}
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}
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static 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 PEControl::RGB8_Z24:
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case PEControl::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 PEControl::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 PEControl::RGB565_Z16:
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{
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WARN_LOG(VIDEO, "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", static_cast<int>(bpmem.zcontrol.pixel_format));
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}
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}
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static u32 GetPixelColor(u32 offset)
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{
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u32 src;
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std::memcpy(&src, &efb[offset], sizeof(u32));
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switch (bpmem.zcontrol.pixel_format)
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{
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case PEControl::RGB8_Z24:
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case PEControl::Z24:
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return 0xff | ((src & 0x00ffffff) << 8);
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case PEControl::RGBA6_Z24:
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return Convert6To8(src & 0x3f) | // Alpha
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Convert6To8((src >> 6) & 0x3f) << 8 | // Blue
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Convert6To8((src >> 12) & 0x3f) << 16 | // Green
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Convert6To8((src >> 18) & 0x3f) << 24; // Red
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case PEControl::RGB565_Z16:
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INFO_LOG(VIDEO, "RGB565_Z16 is not supported correctly yet");
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return 0xff | ((src & 0x00ffffff) << 8);
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default:
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ERROR_LOG(VIDEO, "Unsupported pixel format: %i", static_cast<int>(bpmem.zcontrol.pixel_format));
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return 0;
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}
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}
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static 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 PEControl::RGB8_Z24:
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case PEControl::RGBA6_Z24:
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case PEControl::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 PEControl::RGB565_Z16:
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{
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WARN_LOG(VIDEO, "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", static_cast<int>(bpmem.zcontrol.pixel_format));
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}
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}
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static 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 PEControl::RGB8_Z24:
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case PEControl::RGBA6_Z24:
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case PEControl::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 PEControl::RGB565_Z16:
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{
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WARN_LOG(VIDEO, "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", static_cast<int>(bpmem.zcontrol.pixel_format));
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}
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return depth;
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}
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static u32 GetSourceFactor(u8* srcClr, u8* dstClr, BlendMode::BlendFactor mode)
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{
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switch (mode)
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{
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case BlendMode::ZERO:
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return 0;
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case BlendMode::ONE:
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return 0xffffffff;
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case BlendMode::DSTCLR:
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return *(u32*)dstClr;
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case BlendMode::INVDSTCLR:
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return 0xffffffff - *(u32*)dstClr;
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case BlendMode::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 BlendMode::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 BlendMode::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 BlendMode::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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static u32 GetDestinationFactor(u8* srcClr, u8* dstClr, BlendMode::BlendFactor mode)
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{
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switch (mode)
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{
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case BlendMode::ZERO:
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return 0;
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case BlendMode::ONE:
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return 0xffffffff;
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case BlendMode::SRCCLR:
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return *(u32*)srcClr;
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case BlendMode::INVSRCCLR:
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return 0xffffffff - *(u32*)srcClr;
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case BlendMode::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 BlendMode::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 BlendMode::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 BlendMode::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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static 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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static void LogicBlend(u32 srcClr, u32* dstClr, BlendMode::LogicOp op)
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{
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switch (op)
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{
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case BlendMode::CLEAR:
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*dstClr = 0;
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break;
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case BlendMode::AND:
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*dstClr = srcClr & *dstClr;
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break;
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case BlendMode::AND_REVERSE:
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*dstClr = srcClr & (~*dstClr);
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break;
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case BlendMode::COPY:
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*dstClr = srcClr;
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break;
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case BlendMode::AND_INVERTED:
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*dstClr = (~srcClr) & *dstClr;
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break;
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case BlendMode::NOOP:
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// Do nothing
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break;
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case BlendMode::XOR:
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*dstClr = srcClr ^ *dstClr;
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break;
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case BlendMode::OR:
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*dstClr = srcClr | *dstClr;
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break;
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case BlendMode::NOR:
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*dstClr = ~(srcClr | *dstClr);
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break;
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case BlendMode::EQUIV:
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*dstClr = ~(srcClr ^ *dstClr);
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break;
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case BlendMode::INVERT:
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*dstClr = ~*dstClr;
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break;
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case BlendMode::OR_REVERSE:
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*dstClr = srcClr | (~*dstClr);
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break;
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case BlendMode::COPY_INVERTED:
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*dstClr = ~srcClr;
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break;
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case BlendMode::OR_INVERTED:
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*dstClr = (~srcClr) | *dstClr;
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break;
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case BlendMode::NAND:
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*dstClr = ~(srcClr & *dstClr);
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break;
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case BlendMode::SET:
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*dstClr = 0xffffffff;
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break;
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}
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}
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static 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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static void Dither(u16 x, u16 y, u8* color)
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{
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// No blending for RGB8 mode
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if (!bpmem.blendmode.dither || bpmem.zcontrol.pixel_format != PEControl::PixelFormat::RGBA6_Z24)
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return;
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// Flipper uses a standard 2x2 Bayer Matrix for 6 bit dithering
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static const u8 dither[2][2] = {{0, 2}, {3, 1}};
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// Only the color channels are dithered?
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for (int i = BLU_C; i <= RED_C; i++)
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color[i] = ((color[i] - (color[i] >> 6)) + dither[y & 1][x & 1]) & 0xfc;
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}
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void BlendTev(u16 x, u16 y, u8* color)
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{
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const u32 offset = GetColorOffset(x, y);
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u32 dstClr = GetPixelColor(offset);
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u8* dstClrPtr = (u8*)&dstClr;
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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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Dither(x, y, dstClrPtr);
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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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}
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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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u32 GetColor(u16 x, u16 y)
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{
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u32 offset = GetColorOffset(x, y);
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return GetPixelColor(offset);
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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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yuv444 GetColorYUV(u16 x, u16 y)
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{
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const u32 color = GetColor(x, y);
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const u8 red = static_cast<u8>(color >> 24);
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const u8 green = static_cast<u8>(color >> 16);
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const u8 blue = static_cast<u8>(color >> 8);
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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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return {static_cast<u8>(0.257f * red + 0.504f * green + 0.098f * blue),
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static_cast<s8>(-0.148f * red + -0.291f * green + 0.439f * blue),
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static_cast<s8>(0.439f * red + -0.368f * green + -0.071f * blue)};
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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,
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float Gamma)
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{
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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");
|
|
return;
|
|
}
|
|
|
|
int left = sourceRc.left;
|
|
int right = sourceRc.right;
|
|
|
|
// this assumes copies will always start on an even (YU) pixel and the
|
|
// copy always has an even width, which might not be true.
|
|
if (left & 1 || right & 1)
|
|
{
|
|
WARN_LOG(VIDEO, "Trying to copy XFB to from unaligned EFB source");
|
|
// 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++)
|
|
{
|
|
scanline[i] = GetColorYUV(x, y);
|
|
}
|
|
|
|
// 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 differences 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 color 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 > MAX_XFB_WIDTH * MAX_XFB_HEIGHT)
|
|
{
|
|
ERROR_LOG(VIDEO, "Framebuffer is too large: %ix%i", fbWidth, fbHeight);
|
|
return;
|
|
}
|
|
|
|
size_t textureAddress = 0;
|
|
const int left = sourceRc.left;
|
|
const int right = sourceRc.right;
|
|
|
|
for (u16 y = sourceRc.top; y < sourceRc.bottom; y++)
|
|
{
|
|
for (u16 x = left; x < right; x++)
|
|
{
|
|
const u32 color = Common::swap32(GetColor(x, y) | 0xFF);
|
|
|
|
std::memcpy(&texture[textureAddress], &color, sizeof(u32));
|
|
textureAddress += sizeof(u32);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ZCompare(u16 x, u16 y, u32 z)
|
|
{
|
|
u32 offset = GetDepthOffset(x, y);
|
|
u32 depth = GetPixelDepth(offset);
|
|
|
|
bool pass;
|
|
|
|
switch (bpmem.zmode.func)
|
|
{
|
|
case ZMode::NEVER:
|
|
pass = false;
|
|
break;
|
|
case ZMode::LESS:
|
|
pass = z < depth;
|
|
break;
|
|
case ZMode::EQUAL:
|
|
pass = z == depth;
|
|
break;
|
|
case ZMode::LEQUAL:
|
|
pass = z <= depth;
|
|
break;
|
|
case ZMode::GREATER:
|
|
pass = z > depth;
|
|
break;
|
|
case ZMode::NEQUAL:
|
|
pass = z != depth;
|
|
break;
|
|
case ZMode::GEQUAL:
|
|
pass = z >= depth;
|
|
break;
|
|
case ZMode::ALWAYS:
|
|
pass = true;
|
|
break;
|
|
default:
|
|
pass = false;
|
|
ERROR_LOG(VIDEO, "Bad Z compare mode %i", (int)bpmem.zmode.func);
|
|
}
|
|
|
|
if (pass && bpmem.zmode.updateenable)
|
|
{
|
|
SetPixelDepth(offset, z);
|
|
}
|
|
|
|
return pass;
|
|
}
|
|
}
|