dolphin/Source/Plugins/Plugin_VideoSoftware/Src/EfbInterface.cpp

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// Copyright (C) 2003-2009 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Common.h"
#include "EfbInterface.h"
#include "BPMemLoader.h"
#include "../../../Core/VideoCommon/Src/LookUpTables.h"
#include "PixelEngine.h"
u8 efb[EFB_WIDTH*EFB_HEIGHT*6];
namespace EfbInterface
{
u8 efbColorTexture[EFB_WIDTH*EFB_HEIGHT*4];
inline u32 GetColorOffset(u16 x, u16 y)
{
return (x + y * EFB_WIDTH) * 3;
}
inline u32 GetDepthOffset(u16 x, u16 y)
{
return (x + y * EFB_WIDTH) * 3 + DEPTH_BUFFER_START;
}
void SetPixelAlphaOnly(u32 offset, u8 a)
{
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_Z24:
case PIXELFMT_RGB565_Z16:
// do nothing
break;
case PIXELFMT_RGBA6_Z24:
{
u32 a32 = a;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xffffffc0;
val |= (a32 >> 2) & 0x0000003f;
*dst = val;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
}
void SetPixelColorOnly(u32 offset, u8 *rgb)
{
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_Z24:
{
u32 src = *(u32*)rgb;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= src >> 8;
*dst = val;
}
break;
case PIXELFMT_RGBA6_Z24:
{
u32 src = *(u32*)rgb;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff00003f;
val |= (src >> 4) & 0x00000fc0; // blue
val |= (src >> 6) & 0x0003f000; // green
val |= (src >> 8) & 0x00fc0000; // red
*dst = val;
}
break;
case PIXELFMT_RGB565_Z16:
{
INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
u32 src = *(u32*)rgb;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= src >> 8;
*dst = val;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
}
void SetPixelAlphaColor(u32 offset, u8 *color)
{
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_Z24:
{
u32 src = *(u32*)color;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= src >> 8;
*dst = val;
}
break;
case PIXELFMT_RGBA6_Z24:
{
u32 src = *(u32*)color;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= (src >> 2) & 0x0000003f; // alpha
val |= (src >> 4) & 0x00000fc0; // blue
val |= (src >> 6) & 0x0003f000; // green
val |= (src >> 8) & 0x00fc0000; // red
*dst = val;
}
break;
case PIXELFMT_RGB565_Z16:
{
INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
u32 src = *(u32*)color;
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= src >> 8;
*dst = val;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
}
void GetPixelColor(u32 offset, u8 *color)
{
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_Z24:
{
u32 src = *(u32*)&efb[offset];
u32 *dst = (u32*)color;
u32 val = 0xff | ((src & 0x00ffffff) << 8);
*dst = val;
}
break;
case PIXELFMT_RGBA6_Z24:
{
u32 src = *(u32*)&efb[offset];
color[ALP_C] = Convert6To8(src & 0x3f);
color[BLU_C] = Convert6To8((src >> 6) & 0x3f);
color[GRN_C] = Convert6To8((src >> 12) & 0x3f);
color[RED_C] = Convert6To8((src >> 18) & 0x3f);
}
break;
case PIXELFMT_RGB565_Z16:
{
INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
u32 src = *(u32*)&efb[offset];
u32 *dst = (u32*)color;
u32 val = 0xff | ((src & 0x00ffffff) << 8);
*dst = val;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
}
void SetPixelDepth(u32 offset, u32 depth)
{
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_RGBA6_Z24:
case PIXELFMT_Z24:
{
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= depth & 0x00ffffff;
*dst = val;
}
break;
case PIXELFMT_RGB565_Z16:
{
INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
u32 *dst = (u32*)&efb[offset];
u32 val = *dst & 0xff000000;
val |= depth & 0x00ffffff;
*dst = val;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
}
u32 GetPixelDepth(u32 offset)
{
u32 depth = 0;
switch (bpmem.zcontrol.pixel_format)
{
case PIXELFMT_RGB8_Z24:
case PIXELFMT_RGBA6_Z24:
case PIXELFMT_Z24:
{
depth = (*(u32*)&efb[offset]) & 0x00ffffff;
}
break;
case PIXELFMT_RGB565_Z16:
{
INFO_LOG(VIDEO, "PIXELFMT_RGB565_Z16 is not supported correctly yet");
depth = (*(u32*)&efb[offset]) & 0x00ffffff;
}
break;
default:
ERROR_LOG(VIDEO, "Unsupported pixel format: %i", bpmem.zcontrol.pixel_format);
}
return depth;
}
u32 GetSourceFactor(u8 *srcClr, u8 *dstClr, int mode)
{
switch (mode) {
case 0: // zero
return 0;
case 1: // one
return 0xffffffff;
case 2: // dstclr
return *(u32*)dstClr;
case 3: // invdstclr
return 0xffffffff - *(u32*)dstClr;
case 4: // srcalpha
{
u8 alpha = srcClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 5: // invsrcalpha
{
u8 alpha = 0xff - srcClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 6: // dstalpha
{
u8 alpha = dstClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 7: // invdstalpha
{
u8 alpha = 0xff - dstClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
}
return 0;
}
u32 GetDestinationFactor(u8 *srcClr, u8 *dstClr, int mode)
{
switch (mode) {
case 0: // zero
return 0;
case 1: // one
return 0xffffffff;
case 2: // srcclr
return *(u32*)srcClr;
case 3: // invsrcclr
return 0xffffffff - *(u32*)srcClr;
case 4: // srcalpha
{
u8 alpha = srcClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 5: // invsrcalpha
{
u8 alpha = 0xff - srcClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 6: // dstalpha
{
u8 alpha = dstClr[ALP_C] & 0xff;
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
case 7: // invdstalpha
{
u8 alpha = 0xff - dstClr[ALP_C];
u32 factor = alpha << 24 | alpha << 16 | alpha << 8 | alpha;
return factor;
}
}
return 0;
}
void BlendColor(u8 *srcClr, u8 *dstClr)
{
u32 srcFactor = GetSourceFactor(srcClr, dstClr, bpmem.blendmode.srcfactor);
u32 dstFactor = GetDestinationFactor(srcClr, dstClr, bpmem.blendmode.dstfactor);
for (int i = 0; i < 4; i++)
{
// add MSB of factors to make their range 0 -> 256
u32 sf = (srcFactor & 0xff);
sf += sf >> 7;
u32 df = (dstFactor & 0xff);
df += df >> 7;
u32 color = (srcClr[i] * sf + dstClr[i] * df) >> 8;
dstClr[i] = (color>255)?255:color;
dstFactor >>= 8;
srcFactor >>= 8;
}
}
void LogicBlend(u32 srcClr, u32 &dstClr, int op)
{
switch (op) {
case 0: // clear
dstClr = 0;
break;
case 1: // and
dstClr = srcClr & dstClr;
break;
case 2: // revand
dstClr = srcClr & (~dstClr);
break;
case 3: // copy
dstClr = srcClr;
break;
case 4: // invand
dstClr = (~srcClr) & dstClr;
break;
case 5: // noop
dstClr = dstClr;
break;
case 6: // xor
dstClr = srcClr ^ dstClr;
break;
case 7: // or
dstClr = srcClr | dstClr;
break;
case 8: // nor
dstClr = ~(srcClr | dstClr);
break;
case 9: // equiv
dstClr = ~(srcClr ^ dstClr);
break;
case 10: // inv
dstClr = ~dstClr;
break;
case 11: // revor
dstClr = srcClr | (~dstClr);
break;
case 12: // invcopy
dstClr = ~srcClr;
break;
case 13: // invor
dstClr = (~srcClr) | dstClr;
break;
case 14: // nand
dstClr = ~(srcClr & dstClr);
break;
case 15: // set
dstClr = 0xffffffff;
break;
}
}
void SubtractBlend(u8 *srcClr, u8 *dstClr)
{
for (int i = 0; i < 4; i++)
{
int c = (int)dstClr[i] - (int)srcClr[i];
dstClr[i] = (c < 0)?0:c;
}
}
void BlendTev(u16 x, u16 y, u8 *color)
{
u32 dstClr;
u32 offset = GetColorOffset(x, y);
u8 *dstClrPtr = (u8*)&dstClr;
GetPixelColor(offset, dstClrPtr);
if (bpmem.blendmode.blendenable)
{
if (bpmem.blendmode.subtract)
SubtractBlend(color, dstClrPtr);
else
BlendColor(color, dstClrPtr);
}
else if (bpmem.blendmode.logicopenable)
LogicBlend(*((u32*)color), dstClr, bpmem.blendmode.logicmode);
else
dstClrPtr = color;
if (bpmem.dstalpha.enable)
dstClrPtr[ALP_C] = bpmem.dstalpha.alpha;
if (bpmem.blendmode.colorupdate)
{
if (bpmem.blendmode.alphaupdate)
SetPixelAlphaColor(offset, dstClrPtr);
else
SetPixelColorOnly(offset, dstClrPtr);
}
else if (bpmem.blendmode.alphaupdate)
SetPixelAlphaOnly(offset, dstClrPtr[ALP_C]);
// branchless bounding box update
PixelEngine::pereg.boxLeft = PixelEngine::pereg.boxLeft>x?x:PixelEngine::pereg.boxLeft;
PixelEngine::pereg.boxRight = PixelEngine::pereg.boxRight<x?x:PixelEngine::pereg.boxRight;
PixelEngine::pereg.boxTop = PixelEngine::pereg.boxTop>y?y:PixelEngine::pereg.boxTop;
PixelEngine::pereg.boxBottom = PixelEngine::pereg.boxBottom<y?y:PixelEngine::pereg.boxBottom;
}
void SetColor(u16 x, u16 y, u8 *color)
{
u32 offset = GetColorOffset(x, y);
if (bpmem.blendmode.colorupdate)
{
if (bpmem.blendmode.alphaupdate)
SetPixelAlphaColor(offset, color);
else
SetPixelColorOnly(offset, color);
}
else if (bpmem.blendmode.alphaupdate)
SetPixelAlphaOnly(offset, color[ALP_C]);
}
void SetDepth(u16 x, u16 y, u32 depth)
{
SetPixelDepth(GetDepthOffset(x, y), depth);
}
void GetColor(u16 x, u16 y, u8 *color)
{
u32 offset = GetColorOffset(x, y);
GetPixelColor(offset, color);
}
u32 GetDepth(u16 x, u16 y)
{
u32 offset = GetDepthOffset(x, y);
return GetPixelDepth(offset);
}
u8 *GetPixelPointer(u16 x, u16 y, bool depth)
{
if (depth)
return &efb[GetDepthOffset(x, y)];
return &efb[GetColorOffset(x, y)];
}
void UpdateColorTexture()
{
u32 color;
u8* colorPtr = (u8*)&color;
u32* texturePtr = (u32*)efbColorTexture;
u32 textureAddress = 0;
u32 efbOffset = 0;
for (u16 y = 0; y < EFB_HEIGHT; y++)
{
for (u16 x = 0; x < EFB_WIDTH; x++)
{
GetPixelColor(efbOffset, colorPtr);
efbOffset += 3;
texturePtr[textureAddress++] = Common::swap32(color); // ABGR->RGBA
}
}
}
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;
}
}