550 lines
12 KiB
C++
550 lines
12 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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u8 efb[EFB_WIDTH*EFB_HEIGHT*6];
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namespace EfbInterface
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{
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u8 efbColorTexture[EFB_WIDTH*EFB_HEIGHT*4];
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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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p.DoArray(efbColorTexture, EFB_WIDTH*EFB_HEIGHT*4);
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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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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 UpdateColorTexture()
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{
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u32 color;
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u8* colorPtr = (u8*)&color;
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u32* texturePtr = (u32*)efbColorTexture;
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u32 textureAddress = 0;
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u32 efbOffset = 0;
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for (u16 y = 0; y < EFB_HEIGHT; y++)
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{
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for (u16 x = 0; x < EFB_WIDTH; x++)
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{
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GetPixelColor(efbOffset, colorPtr);
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efbOffset += 3;
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texturePtr[textureAddress++] = Common::swap32(color); // ABGR->RGBA
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}
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}
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}
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bool ZCompare(u16 x, u16 y, u32 z)
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{
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u32 offset = GetDepthOffset(x, y);
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u32 depth = GetPixelDepth(offset);
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bool pass;
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switch (bpmem.zmode.func)
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{
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case COMPARE_NEVER:
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pass = false;
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break;
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case COMPARE_LESS:
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pass = z < depth;
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break;
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case COMPARE_EQUAL:
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pass = z == depth;
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break;
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case COMPARE_LEQUAL:
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pass = z <= depth;
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break;
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case COMPARE_GREATER:
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pass = z > depth;
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break;
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case COMPARE_NEQUAL:
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pass = z != depth;
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break;
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case COMPARE_GEQUAL:
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pass = z >= depth;
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break;
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case COMPARE_ALWAYS:
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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;
|
|
}
|
|
}
|