// begin/end model rendering to screen
void BeginModelRenderingView( CAnyProjection3D &prProjection, CDrawPort *pdp)
{
ASSERT( _iRenderingType==0 && _pdp==NULL);
// set 3D projection
_iRenderingType = 1;
_pdp = pdp;
prProjection->ObjectPlacementL() = CPlacement3D(FLOAT3D(0,0,0), ANGLE3D(0,0,0));
prProjection->Prepare();
// in case of mirror projection, move mirror clip plane a bit father from the mirrored models,
// so we have less clipping (for instance, player feet)
if( prProjection->pr_bMirror) prProjection->pr_plMirrorView.pl_distance -= 0.06f; // -0.06 is because entire projection is offseted by +0.05
_aprProjection = prProjection;
_pdp->SetProjection( _aprProjection);
// make FPU precision low
_fpuOldPrecision = GetFPUPrecision();
SetFPUPrecision(FPT_24BIT);
// prepare common arrays for simple shadows rendering
_avtxCommon.PopAll();
_atexCommon.PopAll();
_acolCommon.PopAll();
// eventually setup truform
extern INDEX gap_bForceTruform;
extern INDEX ogl_bTruformLinearNormals;
if( ogl_bTruformLinearNormals) ogl_bTruformLinearNormals = 1;
if( gap_bForceTruform) {
gap_bForceTruform = 1;
gfxSetTruform( _pGfx->gl_iTessellationLevel, ogl_bTruformLinearNormals);
}
}
// Prepare scene for terrain rendering
void PrepareScene(CAnyProjection3D &apr, CDrawPort *pdp, CTerrain *ptrTerrain)
{
ASSERT(ptrTerrain!=NULL);
ASSERT(ptrTerrain->tr_penEntity!=NULL);
// Set current terrain
_ptrTerrain = ptrTerrain;
// Set drawport
_pdp = pdp;
// Prepare and set the projection
apr->ObjectPlacementL() = CPlacement3D(FLOAT3D(0,0,0), ANGLE3D(0,0,0));
apr->Prepare();
_aprProjection = apr;
_pdp->SetProjection( _aprProjection);
CEntity *pen = ptrTerrain->tr_penEntity;
// calculate projection of viewer in absolute space
const FLOATmatrix3D &mViewer = _aprProjection->pr_ViewerRotationMatrix;
_vViewer(1) = -mViewer(3,1);
_vViewer(2) = -mViewer(3,2);
_vViewer(3) = -mViewer(3,3);
// calculate projection of viewer in object space
_vViewerObj = _vViewer * !pen->en_mRotation;
const CPlacement3D &plTerrain = pen->GetLerpedPlacement();
_mObjectToView = mViewer * pen->en_mRotation;
_vObjectToView = (plTerrain.pl_PositionVector - _aprProjection->pr_vViewerPosition) * mViewer;
// make transform matrix
const FLOATmatrix3D &m = _mObjectToView;
const FLOAT3D &v = _vObjectToView;
FLOAT glm[16];
glm[0] = m(1,1); glm[4] = m(1,2); glm[ 8] = m(1,3); glm[12] = v(1);
glm[1] = m(2,1); glm[5] = m(2,2); glm[ 9] = m(2,3); glm[13] = v(2);
glm[2] = m(3,1); glm[6] = m(3,2); glm[10] = m(3,3); glm[14] = v(3);
glm[3] = 0; glm[7] = 0; glm[11] = 0; glm[15] = 1;
gfxSetViewMatrix(glm);
// Get viewer in absolute space
_vViewerAbs = (_aprProjection->ViewerPlacementR().pl_PositionVector -
pen->en_plPlacement.pl_PositionVector) * !pen->en_mRotation;
gfxDisableBlend();
gfxDisableTexture();
gfxDisableAlphaTest();
gfxEnableDepthTest();
gfxEnableDepthWrite();
gfxCullFace(GFX_BACK);
}