pcsx2/plugins/GSdx/Renderers/Common/GSDevice.cpp

522 lines
19 KiB
C++

/*
* Copyright (C) 2007-2009 Gabest
* http://www.gabest.org
*
* 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; either version 2, or (at your option)
* any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSdx.h"
#include "GSDevice.h"
GSDevice::GSDevice()
: m_wnd()
, m_vsync(false)
, m_rbswapped(false)
, m_backbuffer(NULL)
, m_merge(NULL)
, m_weavebob(NULL)
, m_blend(NULL)
, m_target_tmp(NULL)
, m_current(NULL)
, m_frame(0)
{
memset(&m_vertex, 0, sizeof(m_vertex));
memset(&m_index, 0, sizeof(m_index));
m_linear_present = theApp.GetConfigB("linear_present");
}
GSDevice::~GSDevice()
{
for(auto t : m_pool) delete t;
delete m_backbuffer;
delete m_merge;
delete m_weavebob;
delete m_blend;
delete m_target_tmp;
}
bool GSDevice::Create(const std::shared_ptr<GSWnd>& wnd)
{
m_wnd = wnd;
return true;
}
bool GSDevice::Reset(int w, int h)
{
for(auto t : m_pool) delete t;
m_pool.clear();
delete m_backbuffer;
delete m_merge;
delete m_weavebob;
delete m_blend;
delete m_target_tmp;
m_backbuffer = NULL;
m_merge = NULL;
m_weavebob = NULL;
m_blend = NULL;
m_target_tmp = NULL;
m_current = NULL; // current is special, points to other textures, no need to delete
return m_wnd != NULL;
}
void GSDevice::Present(const GSVector4i& r, int shader)
{
GSVector4i cr = m_wnd->GetClientRect();
int w = std::max<int>(cr.width(), 1);
int h = std::max<int>(cr.height(), 1);
if(!m_backbuffer || m_backbuffer->GetWidth() != w || m_backbuffer->GetHeight() != h)
{
if(!Reset(w, h))
{
return;
}
}
GL_PUSH("Present");
// FIXME is it mandatory, it could be slow
ClearRenderTarget(m_backbuffer, 0);
if(m_current)
{
static int s_shader[5] = {ShaderConvert_COPY, ShaderConvert_SCANLINE,
ShaderConvert_DIAGONAL_FILTER, ShaderConvert_TRIANGULAR_FILTER,
ShaderConvert_COMPLEX_FILTER}; // FIXME
Present(m_current, m_backbuffer, GSVector4(r), s_shader[shader]);
RenderOsd(m_backbuffer);
}
Flip();
}
void GSDevice::Present(GSTexture* sTex, GSTexture* dTex, const GSVector4& dRect, int shader)
{
StretchRect(sTex, dTex, dRect, shader, m_linear_present);
}
GSTexture* GSDevice::FetchSurface(int type, int w, int h, int format)
{
const GSVector2i size(w, h);
for(auto i = m_pool.begin(); i != m_pool.end(); ++i)
{
GSTexture* t = *i;
if(t->GetType() == type && t->GetFormat() == format && t->GetSize() == size)
{
m_pool.erase(i);
return t;
}
}
return CreateSurface(type, w, h, format);
}
void GSDevice::PrintMemoryUsage()
{
#ifdef ENABLE_OGL_DEBUG
uint32 pool = 0;
for(auto t : m_pool)
{
if (t)
pool += t->GetMemUsage();
}
GL_PERF("MEM: Surface Pool %dMB", pool >> 20u);
#endif
}
void GSDevice::EndScene()
{
m_vertex.start += m_vertex.count;
m_vertex.count = 0;
m_index.start += m_index.count;
m_index.count = 0;
}
void GSDevice::Recycle(GSTexture* t)
{
if(t)
{
#ifdef _DEBUG
// Uncommit saves memory but it means a futur allocation when we want to reuse the texture.
// Which is slow and defeat the purpose of the m_pool cache.
// However, it can help to spot part of texture that we forgot to commit
t->Uncommit();
#endif
t->last_frame_used = m_frame;
m_pool.push_front(t);
//printf("%d\n",m_pool.size());
while(m_pool.size() > 300)
{
delete m_pool.back();
m_pool.pop_back();
}
}
}
void GSDevice::AgePool()
{
m_frame++;
while(m_pool.size() > 40 && m_frame - m_pool.back()->last_frame_used > 10)
{
delete m_pool.back();
m_pool.pop_back();
}
}
void GSDevice::PurgePool()
{
// OOM emergency. Let's free this useless pool
while(!m_pool.empty())
{
delete m_pool.back();
m_pool.pop_back();
}
}
GSTexture* GSDevice::CreateSparseRenderTarget(int w, int h, int format)
{
return FetchSurface(HasColorSparse() ? GSTexture::SparseRenderTarget : GSTexture::RenderTarget, w, h, format);
}
GSTexture* GSDevice::CreateSparseDepthStencil(int w, int h, int format)
{
return FetchSurface(HasDepthSparse() ? GSTexture::SparseDepthStencil : GSTexture::DepthStencil, w, h, format);
}
GSTexture* GSDevice::CreateRenderTarget(int w, int h, int format)
{
return FetchSurface(GSTexture::RenderTarget, w, h, format);
}
GSTexture* GSDevice::CreateDepthStencil(int w, int h, int format)
{
return FetchSurface(GSTexture::DepthStencil, w, h, format);
}
GSTexture* GSDevice::CreateTexture(int w, int h, int format)
{
return FetchSurface(GSTexture::Texture, w, h, format);
}
GSTexture* GSDevice::CreateOffscreen(int w, int h, int format)
{
return FetchSurface(GSTexture::Offscreen, w, h, format);
}
void GSDevice::StretchRect(GSTexture* sTex, GSTexture* dTex, const GSVector4& dRect, int shader, bool linear)
{
StretchRect(sTex, GSVector4(0, 0, 1, 1), dTex, dRect, shader, linear);
}
GSTexture* GSDevice::GetCurrent()
{
return m_current;
}
void GSDevice::Merge(GSTexture* sTex[3], GSVector4* sRect, GSVector4* dRect, const GSVector2i& fs, const GSRegPMODE& PMODE, const GSRegEXTBUF& EXTBUF, const GSVector4& c)
{
// KH:COM crashes at startup when booting *through the bios* due to m_merge being NULL.
// (texture appears to be non-null, and is being re-created at a size around like 1700x340,
// dunno if that's relevant) -- air
if(ResizeTarget(&m_merge, fs.x, fs.y))
{
GSTexture* tex[3] = {NULL, NULL, NULL};
for(size_t i = 0; i < countof(tex); i++)
{
if(sTex[i] != NULL)
{
tex[i] = sTex[i];
}
}
DoMerge(tex, sRect, m_merge, dRect, PMODE, EXTBUF, c);
for(size_t i = 0; i < countof(tex); i++)
{
if(tex[i] != sTex[i])
{
Recycle(tex[i]);
}
}
}
else
{
printf("GSdx: m_merge is NULL!\n");
}
m_current = m_merge;
}
void GSDevice::Interlace(const GSVector2i& ds, int field, int mode, float yoffset)
{
ResizeTarget(&m_weavebob, ds.x, ds.y);
if(mode == 0 || mode == 2) // weave or blend
{
// weave first
DoInterlace(m_merge, m_weavebob, field, false, 0);
if(mode == 2)
{
// blend
ResizeTarget(&m_blend, ds.x, ds.y);
DoInterlace(m_weavebob, m_blend, 2, false, 0);
m_current = m_blend;
}
else
{
m_current = m_weavebob;
}
}
else if(mode == 1) // bob
{
DoInterlace(m_merge, m_weavebob, 3, true, yoffset * field);
m_current = m_weavebob;
}
else
{
m_current = m_merge;
}
}
void GSDevice::ExternalFX()
{
GSVector2i s = m_current->GetSize();
if (ResizeTarget(&m_target_tmp))
{
GSVector4 sRect(0, 0, 1, 1);
GSVector4 dRect(0, 0, s.x, s.y);
StretchRect(m_current, sRect, m_target_tmp, dRect, ShaderConvert_TRANSPARENCY_FILTER, false);
DoExternalFX(m_target_tmp, m_current);
}
}
void GSDevice::FXAA()
{
GSVector2i s = m_current->GetSize();
if(ResizeTarget(&m_target_tmp))
{
GSVector4 sRect(0, 0, 1, 1);
GSVector4 dRect(0, 0, s.x, s.y);
StretchRect(m_current, sRect, m_target_tmp, dRect, ShaderConvert_TRANSPARENCY_FILTER, false);
DoFXAA(m_target_tmp, m_current);
}
}
void GSDevice::ShadeBoost()
{
GSVector2i s = m_current->GetSize();
if(ResizeTarget(&m_target_tmp))
{
GSVector4 sRect(0, 0, 1, 1);
GSVector4 dRect(0, 0, s.x, s.y);
StretchRect(m_current, sRect, m_target_tmp, dRect, ShaderConvert_COPY, false);
DoShadeBoost(m_target_tmp, m_current);
}
}
bool GSDevice::ResizeTexture(GSTexture** t, int type, int w, int h)
{
if(t == NULL) {ASSERT(0); return false;}
GSTexture* t2 = *t;
if(t2 == NULL || t2->GetWidth() != w || t2->GetHeight() != h)
{
delete t2;
t2 = FetchSurface(type, w, h, 0);
*t = t2;
}
return t2 != NULL;
}
bool GSDevice::ResizeTexture(GSTexture** t, int w, int h)
{
return ResizeTexture(t, GSTexture::Texture, w, h);
}
bool GSDevice::ResizeTarget(GSTexture** t, int w, int h)
{
return ResizeTexture(t, GSTexture::RenderTarget, w, h);
}
bool GSDevice::ResizeTarget(GSTexture** t)
{
GSVector2i s = m_current->GetSize();
return ResizeTexture(t, GSTexture::RenderTarget, s.x, s.y);
}
GSAdapter::operator std::string() const
{
char buf[sizeof "12345678:12345678:12345678:12345678"];
sprintf(buf, "%.4X:%.4X:%.8X:%.2X", vendor, device, subsys, rev);
return buf;
}
bool GSAdapter::operator==(const GSAdapter &desc_dxgi) const
{
return vendor == desc_dxgi.vendor
&& device == desc_dxgi.device
&& subsys == desc_dxgi.subsys
&& rev == desc_dxgi.rev;
}
#ifdef _WIN32
GSAdapter::GSAdapter(const DXGI_ADAPTER_DESC1 &desc_dxgi)
: vendor(desc_dxgi.VendorId)
, device(desc_dxgi.DeviceId)
, subsys(desc_dxgi.SubSysId)
, rev(desc_dxgi.Revision)
{
}
#endif
#ifdef __linux__
// TODO
#endif
HWBlend GSDevice::GetBlend(size_t index)
{
HWBlend blend = m_blendMap[index];
blend.op = ConvertBlendEnum(blend.op);
blend.src = ConvertBlendEnum(blend.src);
blend.dst = ConvertBlendEnum(blend.dst);
return blend;
}
uint16 GSDevice::GetBlendFlags(size_t index) { return m_blendMap[index].flags; }
std::array<HWBlend, 3*3*3*3 + 1> GSDevice::m_blendMap =
{{
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 0000: (Cs - Cs)*As + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 0001: (Cs - Cs)*As + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 0002: (Cs - Cs)*As + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 0010: (Cs - Cs)*Ad + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 0011: (Cs - Cs)*Ad + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 0012: (Cs - Cs)*Ad + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 0020: (Cs - Cs)*F + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 0021: (Cs - Cs)*F + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 0022: (Cs - Cs)*F + 0 ==> 0
{ BLEND_A_MAX , OP_SUBTRACT , CONST_ONE , SRC1_ALPHA} , //*0100: (Cs - Cd)*As + Cs ==> Cs*(As + 1) - Cd*As
{ 0 , OP_ADD , SRC1_ALPHA , INV_SRC1_ALPHA} , // 0101: (Cs - Cd)*As + Cd ==> Cs*As + Cd*(1 - As)
{ 0 , OP_SUBTRACT , SRC1_ALPHA , SRC1_ALPHA} , // 0102: (Cs - Cd)*As + 0 ==> Cs*As - Cd*As
{ BLEND_A_MAX , OP_SUBTRACT , CONST_ONE , DST_ALPHA} , //*0110: (Cs - Cd)*Ad + Cs ==> Cs*(Ad + 1) - Cd*Ad
{ 0 , OP_ADD , DST_ALPHA , INV_DST_ALPHA} , // 0111: (Cs - Cd)*Ad + Cd ==> Cs*Ad + Cd*(1 - Ad)
{ 0 , OP_SUBTRACT , DST_ALPHA , DST_ALPHA} , // 0112: (Cs - Cd)*Ad + 0 ==> Cs*Ad - Cd*Ad
{ BLEND_A_MAX , OP_SUBTRACT , CONST_ONE , CONST_COLOR} , //*0120: (Cs - Cd)*F + Cs ==> Cs*(F + 1) - Cd*F
{ 0 , OP_ADD , CONST_COLOR , INV_CONST_COLOR} , // 0121: (Cs - Cd)*F + Cd ==> Cs*F + Cd*(1 - F)
{ 0 , OP_SUBTRACT , CONST_COLOR , CONST_COLOR} , // 0122: (Cs - Cd)*F + 0 ==> Cs*F - Cd*F
{ BLEND_NO_BAR | BLEND_A_MAX , OP_ADD , CONST_ONE , CONST_ZERO} , //*0200: (Cs - 0)*As + Cs ==> Cs*(As + 1)
{ BLEND_ACCU , OP_ADD , SRC1_ALPHA , CONST_ONE} , //?0201: (Cs - 0)*As + Cd ==> Cs*As + Cd
{ BLEND_NO_BAR , OP_ADD , SRC1_ALPHA , CONST_ZERO} , // 0202: (Cs - 0)*As + 0 ==> Cs*As
{ BLEND_A_MAX , OP_ADD , CONST_ONE , CONST_ZERO} , //*0210: (Cs - 0)*Ad + Cs ==> Cs*(Ad + 1)
{ 0 , OP_ADD , DST_ALPHA , CONST_ONE} , // 0211: (Cs - 0)*Ad + Cd ==> Cs*Ad + Cd
{ 0 , OP_ADD , DST_ALPHA , CONST_ZERO} , // 0212: (Cs - 0)*Ad + 0 ==> Cs*Ad
{ BLEND_NO_BAR | BLEND_A_MAX , OP_ADD , CONST_ONE , CONST_ZERO} , //*0220: (Cs - 0)*F + Cs ==> Cs*(F + 1)
{ BLEND_ACCU , OP_ADD , CONST_COLOR , CONST_ONE} , //?0221: (Cs - 0)*F + Cd ==> Cs*F + Cd
{ BLEND_NO_BAR , OP_ADD , CONST_COLOR , CONST_ZERO} , // 0222: (Cs - 0)*F + 0 ==> Cs*F
{ 0 , OP_ADD , INV_SRC1_ALPHA , SRC1_ALPHA} , // 1000: (Cd - Cs)*As + Cs ==> Cd*As + Cs*(1 - As)
{ BLEND_A_MAX , OP_REV_SUBTRACT , SRC1_ALPHA , CONST_ONE} , //*1001: (Cd - Cs)*As + Cd ==> Cd*(As + 1) - Cs*As
{ 0 , OP_REV_SUBTRACT , SRC1_ALPHA , SRC1_ALPHA} , // 1002: (Cd - Cs)*As + 0 ==> Cd*As - Cs*As
{ 0 , OP_ADD , INV_DST_ALPHA , DST_ALPHA} , // 1010: (Cd - Cs)*Ad + Cs ==> Cd*Ad + Cs*(1 - Ad)
{ BLEND_A_MAX , OP_REV_SUBTRACT , DST_ALPHA , CONST_ONE} , //*1011: (Cd - Cs)*Ad + Cd ==> Cd*(Ad + 1) - Cs*Ad
{ 0 , OP_REV_SUBTRACT , DST_ALPHA , DST_ALPHA} , // 1012: (Cd - Cs)*Ad + 0 ==> Cd*Ad - Cs*Ad
{ 0 , OP_ADD , INV_CONST_COLOR , CONST_COLOR} , // 1020: (Cd - Cs)*F + Cs ==> Cd*F + Cs*(1 - F)
{ BLEND_A_MAX , OP_REV_SUBTRACT , CONST_COLOR , CONST_ONE} , //*1021: (Cd - Cs)*F + Cd ==> Cd*(F + 1) - Cs*F
{ 0 , OP_REV_SUBTRACT , CONST_COLOR , CONST_COLOR} , // 1022: (Cd - Cs)*F + 0 ==> Cd*F - Cs*F
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 1100: (Cd - Cd)*As + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 1101: (Cd - Cd)*As + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 1102: (Cd - Cd)*As + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 1110: (Cd - Cd)*Ad + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 1111: (Cd - Cd)*Ad + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 1112: (Cd - Cd)*Ad + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 1120: (Cd - Cd)*F + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 1121: (Cd - Cd)*F + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 1122: (Cd - Cd)*F + 0 ==> 0
{ 0 , OP_ADD , CONST_ONE , SRC1_ALPHA} , // 1200: (Cd - 0)*As + Cs ==> Cs + Cd*As
{ BLEND_C_CLR , OP_ADD , DST_COLOR , SRC1_ALPHA} , //#1201: (Cd - 0)*As + Cd ==> Cd*(1 + As) // ffxii main menu background
{ 0 , OP_ADD , CONST_ZERO , SRC1_ALPHA} , // 1202: (Cd - 0)*As + 0 ==> Cd*As
{ 0 , OP_ADD , CONST_ONE , DST_ALPHA} , // 1210: (Cd - 0)*Ad + Cs ==> Cs + Cd*Ad
{ BLEND_C_CLR , OP_ADD , DST_COLOR , DST_ALPHA} , //#1211: (Cd - 0)*Ad + Cd ==> Cd*(1 + Ad)
{ 0 , OP_ADD , CONST_ZERO , DST_ALPHA} , // 1212: (Cd - 0)*Ad + 0 ==> Cd*Ad
{ 0 , OP_ADD , CONST_ONE , CONST_COLOR} , // 1220: (Cd - 0)*F + Cs ==> Cs + Cd*F
{ BLEND_C_CLR , OP_ADD , DST_COLOR , CONST_COLOR} , //#1221: (Cd - 0)*F + Cd ==> Cd*(1 + F)
{ 0 , OP_ADD , CONST_ZERO , CONST_COLOR} , // 1222: (Cd - 0)*F + 0 ==> Cd*F
{ BLEND_NO_BAR , OP_ADD , INV_SRC1_ALPHA , CONST_ZERO} , // 2000: (0 - Cs)*As + Cs ==> Cs*(1 - As)
{ BLEND_ACCU , OP_REV_SUBTRACT , SRC1_ALPHA , CONST_ONE} , //?2001: (0 - Cs)*As + Cd ==> Cd - Cs*As
{ BLEND_NO_BAR , OP_REV_SUBTRACT , SRC1_ALPHA , CONST_ZERO} , // 2002: (0 - Cs)*As + 0 ==> 0 - Cs*As
{ 0 , OP_ADD , INV_DST_ALPHA , CONST_ZERO} , // 2010: (0 - Cs)*Ad + Cs ==> Cs*(1 - Ad)
{ 0 , OP_REV_SUBTRACT , DST_ALPHA , CONST_ONE} , // 2011: (0 - Cs)*Ad + Cd ==> Cd - Cs*Ad
{ 0 , OP_REV_SUBTRACT , DST_ALPHA , CONST_ZERO} , // 2012: (0 - Cs)*Ad + 0 ==> 0 - Cs*Ad
{ BLEND_NO_BAR , OP_ADD , INV_CONST_COLOR , CONST_ZERO} , // 2020: (0 - Cs)*F + Cs ==> Cs*(1 - F)
{ BLEND_ACCU , OP_REV_SUBTRACT , CONST_COLOR , CONST_ONE} , //?2021: (0 - Cs)*F + Cd ==> Cd - Cs*F
{ BLEND_NO_BAR , OP_REV_SUBTRACT , CONST_COLOR , CONST_ZERO} , // 2022: (0 - Cs)*F + 0 ==> 0 - Cs*F
{ 0 , OP_SUBTRACT , CONST_ONE , SRC1_ALPHA} , // 2100: (0 - Cd)*As + Cs ==> Cs - Cd*As
{ 0 , OP_ADD , CONST_ZERO , INV_SRC1_ALPHA} , // 2101: (0 - Cd)*As + Cd ==> Cd*(1 - As)
{ 0 , OP_SUBTRACT , CONST_ZERO , SRC1_ALPHA} , // 2102: (0 - Cd)*As + 0 ==> 0 - Cd*As
{ 0 , OP_SUBTRACT , CONST_ONE , DST_ALPHA} , // 2110: (0 - Cd)*Ad + Cs ==> Cs - Cd*Ad
{ 0 , OP_ADD , CONST_ZERO , INV_DST_ALPHA} , // 2111: (0 - Cd)*Ad + Cd ==> Cd*(1 - Ad)
{ 0 , OP_SUBTRACT , CONST_ONE , DST_ALPHA} , // 2112: (0 - Cd)*Ad + 0 ==> 0 - Cd*Ad
{ 0 , OP_SUBTRACT , CONST_ONE , CONST_COLOR} , // 2120: (0 - Cd)*F + Cs ==> Cs - Cd*F
{ 0 , OP_ADD , CONST_ZERO , INV_CONST_COLOR} , // 2121: (0 - Cd)*F + Cd ==> Cd*(1 - F)
{ 0 , OP_SUBTRACT , CONST_ONE , CONST_COLOR} , // 2122: (0 - Cd)*F + 0 ==> 0 - Cd*F
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 2200: (0 - 0)*As + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 2201: (0 - 0)*As + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 2202: (0 - 0)*As + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 2210: (0 - 0)*Ad + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 2211: (0 - 0)*Ad + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 2212: (0 - 0)*Ad + 0 ==> 0
{ BLEND_NO_BAR , OP_ADD , CONST_ONE , CONST_ZERO} , // 2220: (0 - 0)*F + Cs ==> Cs
{ 0 , OP_ADD , CONST_ZERO , CONST_ONE} , // 2221: (0 - 0)*F + Cd ==> Cd
{ BLEND_NO_BAR , OP_ADD , CONST_ZERO , CONST_ZERO} , // 2222: (0 - 0)*F + 0 ==> 0
{ 0 , OP_ADD , SRC_ALPHA , INV_SRC_ALPHA} , // extra for merge operation
}};