void DistantLand::renderReflectedStatics(const D3DXMATRIX *view, const D3DXMATRIX *proj)
{
// Select appropriate static clipping distance
D3DXMATRIX ds_proj = *proj, ds_viewproj;
float zn = 4.0f, zf = Configuration.DL.NearStaticEnd * kCellSize;
// Don't draw beyond fully fogged distance; early out if frustum is empty
zf = std::min(fogEnd, zf);
if(zf <= zn)
return;
// Create a clipping frustum for visibility determination
editProjectionZ(&ds_proj, zn, zf);
ds_viewproj = (*view) * ds_proj;
// Cull sort and draw
VisibleSet visReflected;
ViewFrustum range_frustum(&ds_viewproj);
D3DXVECTOR4 viewsphere(eyePos.x, eyePos.y, eyePos.z, zf);
currentWorldSpace->NearStatics->GetVisibleMeshes(range_frustum, viewsphere, visReflected);
currentWorldSpace->FarStatics->GetVisibleMeshes(range_frustum, viewsphere, visReflected);
currentWorldSpace->VeryFarStatics->GetVisibleMeshes(range_frustum, viewsphere, visReflected);
visReflected.SortByState();
device->SetVertexDeclaration(StaticDecl);
visReflected.Render(device, effect, effect, &ehTex0, 0, &ehWorld, SIZEOFSTATICVERT);
}
void DistantLand::cullGrass(const D3DXMATRIX *view, const D3DXMATRIX *proj)
{
D3DXMATRIX ds_proj = *proj, ds_viewproj;
float zn = 4.0f, zf = 7168.0f;
// Don't draw beyond fully fogged distance; early out if frustum is empty
if(~Configuration.MGEFlags & EXP_FOG)
zf = min(fogEnd, zf);
if(zf <= zn)
return;
// Create a clipping frustum for visibility determination
editProjectionZ(&ds_proj, zn, zf);
ds_viewproj = (*view) * ds_proj;
// Cull and sort
ViewFrustum range_frustum(&ds_viewproj);
visGrass.RemoveAll();
currentWorldSpace->GrassStatics->GetVisibleMeshesCoarse(range_frustum, visGrass);
visGrass.SortByState();
buildGrassInstanceVB();
}
void DistantLand::renderWaterReflection(const D3DXMATRIX *view, const D3DXMATRIX *proj)
{
DECLARE_MWBRIDGE
// Switch to render target
RenderTargetSwitcher rtsw(texReflection, surfReflectionZ);
device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, horizonCol, 1.0, 0);
// Calculate reflected view matrix, mirror plane at water mesh level
D3DXMATRIX reflView;
D3DXPLANE plane(0, 0, 1.0, -(mwBridge->WaterLevel() - 1.0));
D3DXMatrixReflect(&reflView, &plane);
D3DXMatrixMultiply(&reflView, &reflView, view);
effect->SetMatrix(ehView, &reflView);
// Calculate new projection
D3DXMATRIX reflProj = *proj;
editProjectionZ(&reflProj, 4.0, Configuration.DL.DrawDist * kCellSize);
effect->SetMatrix(ehProj, &reflProj);
// Clipping setup
D3DXMATRIX clipMat;
// Clip geometry on opposite side of water plane
plane *= mwBridge->IsUnderwater(eyePos.z) ? -1.0 : 1.0;
// If using dynamic ripples, the water level can be lowered by up to 0.5 * waveheight
// so move clip plane downwards at the cost of some reflection errors
if(Configuration.MGEFlags & DYNAMIC_RIPPLES)
plane.d += 0.5 * Configuration.DL.WaterWaveHeight;
// Doing inverses separately is a lot more numerically stable
D3DXMatrixInverse(&clipMat, 0, &reflView);
D3DXMatrixTranspose(&clipMat, &clipMat);
D3DXPlaneTransform(&plane, &plane, &clipMat);
D3DXMatrixInverse(&clipMat, 0, &reflProj);
D3DXMatrixTranspose(&clipMat, &clipMat);
D3DXPlaneTransform(&plane, &plane, &clipMat);
if(visDistant.size() == 0)
{
// Workaround for a Direct3D bug with clipping planes, where SetClipPlane
// has no effect on the shader pipeline if the last rendered draw call was using
// the fixed function pipeline. This is usually covered by distant statics, but
// not in compact interiors where all distant statics may be culled.
// Provoking a DrawPrimitive with shader here makes the following SetClipPlane work.
effect->BeginPass(PASS_WORKAROUND);
device->SetVertexDeclaration(WaterDecl);
device->SetStreamSource(0, vbFullFrame, 0, 12);
device->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
effect->EndPass();
}
device->SetClipPlane(0, plane);
device->SetRenderState(D3DRS_CLIPPLANEENABLE, 1);
// Rendering
if(mwBridge->IsExterior() && (Configuration.MGEFlags & REFLECTIVE_WATER))
{
// Draw land reflection, with opposite culling
effect->BeginPass(PASS_RENDERLANDREFL);
device->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
renderDistantLand(effect, &reflView, &reflProj);
effect->EndPass();
}
if(isDistantCell() && (Configuration.MGEFlags & REFLECT_NEAR))
{
// Draw statics reflection, with opposite culling and no dissolve
DWORD p = (mwBridge->CellHasWeather() && !mwBridge->IsUnderwater(eyePos.z)) ? PASS_RENDERSTATICSEXTERIOR : PASS_RENDERSTATICSINTERIOR;
effect->SetFloat(ehNearViewRange, 0);
effect->BeginPass(p);
device->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
renderReflectedStatics(&reflView, &reflProj);
effect->EndPass();
effect->SetFloat(ehNearViewRange, nearViewRange);
}
if((Configuration.MGEFlags & REFLECT_SKY) && !recordSky.empty() && !mwBridge->IsUnderwater(eyePos.z))
{
// Draw sky reflection, with opposite culling
effect->BeginPass(PASS_RENDERSKY);
device->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
renderReflectedSky();
effect->EndPass();
}
// Restore view state
device->SetRenderState(D3DRS_CLIPPLANEENABLE, 0);
effect->SetMatrix(ehView, view);
effect->SetMatrix(ehProj, proj);
}
