qboolean R_MirrorViewBySurface (drawSurf_t *drawSurf, int entityNum) {
vec4_t clipDest[128];
viewParms_t newParms;
viewParms_t oldParms;
orientation_t surface, camera;
// don't recursively mirror
if (tr.viewParms.isPortal)
{
ri.Printf( PRINT_DEVELOPER, "WARNING: recursive mirror/portal found\n" );
return qfalse;
}
if ( r_noportals->integer || r_fastsky->integer ) {
return qfalse;
}
// trivially reject portal/mirror
if ( SurfIsOffscreen( drawSurf, clipDest ) ) {
return qfalse;
}
// save old viewParms so we can return to it after the mirror view
oldParms = tr.viewParms;
newParms = tr.viewParms;
newParms.isPortal = qtrue;
if ( !R_GetPortalOrientations( drawSurf, entityNum, &surface, &camera,
newParms.pvsOrigin, &newParms.isMirror ) ) {
return qfalse; // bad portal, no portalentity
}
R_MirrorPoint (oldParms.or.origin, &surface, &camera, newParms.or.origin );
VectorSubtract( vec3_origin, camera.axis[0], newParms.portalPlane.normal );
newParms.portalPlane.dist = DotProduct( camera.origin, newParms.portalPlane.normal );
R_MirrorVector (oldParms.or.axis[0], &surface, &camera, newParms.or.axis[0]);
R_MirrorVector (oldParms.or.axis[1], &surface, &camera, newParms.or.axis[1]);
R_MirrorVector (oldParms.or.axis[2], &surface, &camera, newParms.or.axis[2]);
// OPTIMIZE: restrict the viewport on the mirrored view
// render the mirror view
R_RenderView (&newParms);
tr.viewParms = oldParms;
return qtrue;
}
/*
========================
R_MirrorViewBySurface
========================
*/
static viewDef_t *R_MirrorViewBySurface( drawSurf_t *drawSurf ) {
viewDef_t *parms;
orientation_t surface, camera;
idPlane originalPlane, plane;
// copy the viewport size from the original
parms = (viewDef_t *)R_FrameAlloc( sizeof( *parms ) );
*parms = *tr.viewDef;
parms->renderView.viewID = 0; // clear to allow player bodies to show up, and suppress view weapons
parms->isSubview = true;
parms->isMirror = true;
// create plane axis for the portal we are seeing
R_PlaneForSurface( drawSurf->geo, originalPlane );
R_LocalPlaneToGlobal( drawSurf->space->modelMatrix, originalPlane, plane );
surface.origin = plane.Normal() * -plane[3];
surface.axis[0] = plane.Normal();
surface.axis[0].NormalVectors( surface.axis[1], surface.axis[2] );
surface.axis[2] = -surface.axis[2];
camera.origin = surface.origin;
camera.axis[0] = -surface.axis[0];
camera.axis[1] = surface.axis[1];
camera.axis[2] = surface.axis[2];
// set the mirrored origin and axis
R_MirrorPoint( tr.viewDef->renderView.vieworg, &surface, &camera, parms->renderView.vieworg );
R_MirrorVector( tr.viewDef->renderView.viewaxis[0], &surface, &camera, parms->renderView.viewaxis[0] );
R_MirrorVector( tr.viewDef->renderView.viewaxis[1], &surface, &camera, parms->renderView.viewaxis[1] );
R_MirrorVector( tr.viewDef->renderView.viewaxis[2], &surface, &camera, parms->renderView.viewaxis[2] );
// make the view origin 16 units away from the center of the surface
idVec3 viewOrigin = ( drawSurf->geo->bounds[0] + drawSurf->geo->bounds[1] ) * 0.5;
viewOrigin += ( originalPlane.Normal() * 16 );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, viewOrigin, parms->initialViewAreaOrigin );
// set the mirror clip plane
parms->numClipPlanes = 1;
parms->clipPlanes[0] = -camera.axis[0];
parms->clipPlanes[0][3] = -( camera.origin * parms->clipPlanes[0].Normal() );
return parms;
}
/*
========================
R_DoWaterView
Returns qtrue if another view has been rendered
========================
*/
qboolean R_DoWaterView (drawSurf_t *drawSurf, int entityNum) {
// vec4_t clipDest[128];
viewParms_t newParms;
viewParms_t oldParms;
orientation_t surface, camera;
cplane_t plane;
srfSurfaceStatic_t *srf;
// don't recursively do water
if (tr.viewParms.doWater) {
// tesselated water has this issue - so we just ignore and not spam console
// ri.Printf( PRINT_DEVELOPER, "WARNING: recursive water found\n" );
return qfalse;
}
srf = (srfSurfaceStatic_t *)drawSurf->surface;
// trivially reject portal/mirror
//This wont work because vbo surfs dont fill out tess...
//if ( SurfIsOffscreen( drawSurf, clipDest ) ) {
// return qfalse;
//}
//Set plane
tr.viewParms.doWater = qtrue;
tr.viewParms.waterPlane.normal[0] = 0;
tr.viewParms.waterPlane.normal[1] = 0;
tr.viewParms.waterPlane.normal[2] = -1;
tr.viewParms.waterPlane.dist = srf->origin[2];
if ( DotProduct(tr.viewParms.waterPlane.normal,tr.viewParms.or.origin)+tr.viewParms.waterPlane.dist >0)
{
tr.viewParms.isUnderwater=qtrue;
}
// save old viewParms so we can return to it after the mirror view
oldParms = tr.viewParms;
newParms = tr.viewParms;
newParms.isWater = 1;
newParms.viewportWidth=WATER_RES_X;
newParms.viewportHeight=WATER_RES_Y;
newParms.viewportX =0;//tr.refdef.x;
newParms.viewportY =0;// glConfig.vidHeight - ( tr.refdef.y + WATER_RES_Y );
tr.refdef.rdflags|= RDF_NOEFFECTS ;
// render the mirror view
R_RenderView (&newParms);
//Do the second view now
newParms = tr.viewParms;
newParms.isWater = 2;
newParms.isMirror = qtrue;
newParms.viewportWidth = WATER_RES_X;
newParms.viewportHeight = WATER_RES_Y;
newParms.viewportX = 0;//tr.refdef.x;
newParms.viewportY = 0;//glConfig.vidHeight - ( tr.refdef.y + WATER_RES_Y );
plane.dist=tr.viewParms.waterPlane.dist;
plane.normal[0]=-tr.viewParms.waterPlane.normal[0];
plane.normal[1]=-tr.viewParms.waterPlane.normal[1];
plane.normal[2]=-tr.viewParms.waterPlane.normal[2];
R_GetSurfaceOrientations( &plane, &surface, &camera );
R_MirrorPoint (oldParms.or.origin, &surface, &camera, newParms.or.origin );
R_MirrorVector (oldParms.or.axis[0], &surface, &camera, newParms.or.axis[0]);
R_MirrorVector (oldParms.or.axis[1], &surface, &camera, newParms.or.axis[1]);
R_MirrorVector (oldParms.or.axis[2], &surface, &camera, newParms.or.axis[2]);
// render the mirror view
tr.refdef.rdflags|= RDF_NOEFFECTS;
R_RenderView (&newParms);
tr.viewParms = oldParms;
tr.refdef.rdflags&= ~RDF_NOEFFECTS;
return qtrue;
}
/*
========================
R_MirrorViewBySurface
========================
*/
static viewDef_t* R_MirrorViewBySurface( const drawSurf_t* drawSurf )
{
// copy the viewport size from the original
viewDef_t* parms = ( viewDef_t* )R_FrameAlloc( sizeof( *parms ) );
*parms = *tr.viewDef;
parms->renderView.viewID = 0; // clear to allow player bodies to show up, and suppress view weapons
parms->isSubview = true;
parms->isMirror = true;
parms->isObliqueProjection = false;
// create plane axis for the portal we are seeing
idPlane originalPlane, plane;
R_PlaneForSurface( drawSurf->frontEndGeo, originalPlane );
R_LocalPlaneToGlobal( drawSurf->space->modelMatrix, originalPlane, plane );
orientation_t surface;
surface.origin = plane.Normal() * -plane[3];
surface.axis[0] = plane.Normal();
surface.axis[0].NormalVectors( surface.axis[1], surface.axis[2] );
surface.axis[2] = -surface.axis[2];
orientation_t camera;
camera.origin = surface.origin;
camera.axis[0] = -surface.axis[0];
camera.axis[1] = surface.axis[1];
camera.axis[2] = surface.axis[2];
// set the mirrored origin and axis
R_MirrorPoint( tr.viewDef->renderView.vieworg, &surface, &camera, parms->renderView.vieworg );
R_MirrorVector( tr.viewDef->renderView.viewaxis[0], &surface, &camera, parms->renderView.viewaxis[0] );
R_MirrorVector( tr.viewDef->renderView.viewaxis[1], &surface, &camera, parms->renderView.viewaxis[1] );
R_MirrorVector( tr.viewDef->renderView.viewaxis[2], &surface, &camera, parms->renderView.viewaxis[2] );
// make the view origin 16 units away from the center of the surface
const idVec3 center = (drawSurf->frontEndGeo->bounds[0] + drawSurf->frontEndGeo->bounds[1]) * 0.5f;
const idVec3 viewOrigin = center + (originalPlane.Normal() * 16.0f);
R_LocalPointToGlobal(drawSurf->space->modelMatrix, viewOrigin, parms->initialViewAreaOrigin);
// set the mirror clip plane
parms->numClipPlanes = 1;
parms->clipPlanes[0] = -camera.axis[0];
parms->clipPlanes[0][3] = -( camera.origin * parms->clipPlanes[0].Normal() );
if (r_waterReflectFix.GetBool() && !parms->is2Dgui && drawSurf->material->GetSurfaceType() == SURFTYPE_MIRROR)
{
parms->isObliqueProjection = true;
float dist = parms->clipPlanes[0].Dist();
float viewdist = parms->renderView.vieworg * parms->clipPlanes[0].Normal();
float fDist = -dist + viewdist;
static const float fudge = 2.f; //fudge avoids depth precision artifacts when performing oblique projection
if (fDist > fudge || fDist < -fudge)
{
if (fDist < 0.f)
fDist += fudge;
else
fDist -= fudge;
}
parms->clipPlanes[0][3] = fDist;
R_SetupViewMatrix(parms);
R_SetupProjectionMatrix(parms);
R_ObliqueProjection(parms);
}
return parms;
}
