bool CALL HGE_Impl::Gfx_BeginScene(HTARGET targ)
{LPDIRECT3DSURFACE8 pSurf=0, pDepth=0;D3DDISPLAYMODE Mode;CRenderTargetList *target=(CRenderTargetList *)targ;HRESULT hr = pD3DDevice->TestCooperativeLevel();if (hr == D3DERR_DEVICELOST) return false;else if (hr == D3DERR_DEVICENOTRESET){if(bWindowed){if(FAILED(pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &Mode)) || Mode.Format==D3DFMT_UNKNOWN) {_PostError("Can't determine desktop video mode");return false;}d3dppW.BackBufferFormat = Mode.Format;if(_format_id(Mode.Format) < 4) nScreenBPP=16;else nScreenBPP=32;}if(!_GfxRestore()) return false; }if(VertArray){_PostError("Gfx_BeginScene: Scene is already being rendered");return false;}if(target != pCurTarget){if(target){target->pTex->GetSurfaceLevel(0, &pSurf);pDepth=target->pDepth;}else{pSurf=pScreenSurf;pDepth=pScreenDepth;}if(FAILED(pD3DDevice->SetRenderTarget(pSurf, pDepth))){if(target) pSurf->Release();_PostError("Gfx_BeginScene: Can't set render target");return false;}if(target){pSurf->Release();if(target->pDepth) pD3DDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_TRUE ); else pD3DDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_FALSE ); _SetProjectionMatrix(target->width, target->height);}else{if(bZBuffer) pD3DDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_TRUE ); else pD3DDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_FALSE );_SetProjectionMatrix(nScreenWidth, nScreenHeight);}pD3DDevice->SetTransform(D3DTS_PROJECTION, &matProj);D3DXMatrixIdentity(&matView);pD3DDevice->SetTransform(D3DTS_VIEW, &matView);pCurTarget=target;}pD3DDevice->BeginScene();pVB->Lock( 0, 0, (BYTE**)&VertArray, 0 );return true;
}

void CALL HGE_Impl::Gfx_Clear(DWORD color)
{if(pCurTarget){if(pCurTarget->pDepth)pD3DDevice->Clear( 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, color, 1.0f, 0 );elsepD3DDevice->Clear( 0, NULL, D3DCLEAR_TARGET, color, 1.0f, 0 );}else{if(bZBuffer)pD3DDevice->Clear( 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, color, 1.0f, 0 );elsepD3DDevice->Clear( 0, NULL, D3DCLEAR_TARGET, color, 1.0f, 0 );}
}

void CALL HGE_Impl::Gfx_RenderQuad(const hgeQuad *quad)
{if(VertArray){if(CurPrimType!=HGEPRIM_QUADS || nPrim>=VERTEX_BUFFER_SIZE/HGEPRIM_QUADS || CurTexture!=quad->tex || CurBlendMode!=quad->blend){_render_batch();CurPrimType=HGEPRIM_QUADS;if(CurBlendMode != quad->blend) _SetBlendMode(quad->blend);if(quad->tex != CurTexture){pD3DDevice->SetTexture( 0, (LPDIRECT3DTEXTURE8)quad->tex );CurTexture = quad->tex;}}memcpy(&VertArray[nPrim*HGEPRIM_QUADS], quad->v, sizeof(hgeVertex)*HGEPRIM_QUADS);nPrim++;}
}

void CALL HGE_Impl::Gfx_RenderTriple(const hgeTriple *triple)
{if(VertArray){if(CurPrimType!=HGEPRIM_TRIPLES || nPrim>=VERTEX_BUFFER_SIZE/HGEPRIM_TRIPLES || CurTexture!=triple->tex || CurBlendMode!=triple->blend){_render_batch();CurPrimType=HGEPRIM_TRIPLES;if(CurBlendMode != triple->blend) _SetBlendMode(triple->blend);if(triple->tex != CurTexture) {pD3DDevice->SetTexture( 0, (LPDIRECT3DTEXTURE8)triple->tex );CurTexture = triple->tex;}}memcpy(&VertArray[nPrim*HGEPRIM_TRIPLES], triple->v, sizeof(hgeVertex)*HGEPRIM_TRIPLES);nPrim++;}
}

void CALL HGE_Impl::Gfx_RenderLine(float x1, float y1, float x2, float y2, DWORD color, float z)
{if(VertArray){if(CurPrimType!=HGEPRIM_LINES || nPrim>=VERTEX_BUFFER_SIZE/HGEPRIM_LINES || CurTexture || CurBlendMode!=BLEND_DEFAULT){_render_batch();CurPrimType=HGEPRIM_LINES;if(CurBlendMode != BLEND_DEFAULT) _SetBlendMode(BLEND_DEFAULT);if(CurTexture) { pD3DDevice->SetTexture(0, 0); CurTexture=0; }}int i=nPrim*HGEPRIM_LINES;VertArray[i].x = x1; VertArray[i+1].x = x2;VertArray[i].y = y1; VertArray[i+1].y = y2;VertArray[i].z     = VertArray[i+1].z = z;VertArray[i].col   = VertArray[i+1].col = color;VertArray[i].tx    = VertArray[i+1].tx =VertArray[i].ty    = VertArray[i+1].ty = 0.0f;nPrim++;}
}

void CALL HGE_Impl::Gfx_EndScene()
{_render_batch(true);pD3DDevice->EndScene();if(!pCurTarget) pD3DDevice->Present( NULL, NULL, NULL, NULL );
}

hgeVertex* CALL HGE_Impl::Gfx_StartBatch(int prim_type, HTEXTURE tex, int blend, int *max_prim)
{if(VertArray){_render_batch();CurPrimType=prim_type;if(CurBlendMode != blend) _SetBlendMode(blend);if(tex != CurTexture){pD3DDevice->SetTexture( 0, (LPDIRECT3DTEXTURE8)tex );CurTexture = tex;}*max_prim=VERTEX_BUFFER_SIZE / prim_type;return VertArray;}else return 0;
}

void CALL HGE_Impl::Gfx_FinishBatch(int nprim)
{nPrim=nprim;
}

void CALL HGE_Impl::Gfx_SetClipping(int x, int y, int w, int h)
{D3DVIEWPORT8 vp;int scr_width, scr_height;if(!pCurTarget) {scr_width=pHGE->System_GetStateInt(HGE_SCREENWIDTH);scr_height=pHGE->System_GetStateInt(HGE_SCREENHEIGHT);}else {scr_width=Texture_GetWidth((HTEXTURE)pCurTarget->pTex);scr_height=Texture_GetHeight((HTEXTURE)pCurTarget->pTex);}if(!w) {vp.X=0;vp.Y=0;vp.Width=scr_width;vp.Height=scr_height;}else{if(x<0) { w+=x; x=0; }if(y<0) { h+=y; y=0; }if(x+w > scr_width) w=scr_width-x;if(y+h > scr_height) h=scr_height-y;vp.X=x;vp.Y=y;vp.Width=w;vp.Height=h;}vp.MinZ=0.0f;vp.MaxZ=1.0f;_render_batch();pD3DDevice->SetViewport(&vp);D3DXMATRIX tmp;D3DXMatrixScaling(&matProj, 1.0f, -1.0f, 1.0f);D3DXMatrixTranslation(&tmp, -0.5f, +0.5f, 0.0f);D3DXMatrixMultiply(&matProj, &matProj, &tmp);D3DXMatrixOrthoOffCenterLH(&tmp, (float)vp.X, (float)(vp.X+vp.Width), -((float)(vp.Y+vp.Height)), -((float)vp.Y), vp.MinZ, vp.MaxZ);D3DXMatrixMultiply(&matProj, &matProj, &tmp);pD3DDevice->SetTransform(D3DTS_PROJECTION, &matProj);
}

void CALL HGE_Impl::Gfx_SetTransform(float x, float y, float dx, float dy, float rot, float hscale, float vscale)
{D3DXMATRIX tmp;if(vscale==0.0f) D3DXMatrixIdentity(&matView);else{D3DXMatrixTranslation(&matView, -x, -y, 0.0f);D3DXMatrixScaling(&tmp, hscale, vscale, 1.0f);D3DXMatrixMultiply(&matView, &matView, &tmp);D3DXMatrixRotationZ(&tmp, -rot);D3DXMatrixMultiply(&matView, &matView, &tmp);D3DXMatrixTranslation(&tmp, x+dx, y+dy, 0.0f);D3DXMatrixMultiply(&matView, &matView, &tmp);}_render_batch();pD3DDevice->SetTransform(D3DTS_VIEW, &matView);
}