void SingleLightShadowMap::_render( RenderPassManager* renderPass,
const SceneRenderState *diffuseState )
{
PROFILE_SCOPE(SingleLightShadowMap_render);
const LightMapParams *lmParams = mLight->getExtended<LightMapParams>();
const bool bUseLightmappedGeometry = lmParams ? !lmParams->representedInLightmap || lmParams->includeLightmappedGeometryInShadow : true;
const U32 texSize = getBestTexSize();
if ( mShadowMapTex.isNull() ||
mTexSize != texSize )
{
mTexSize = texSize;
mShadowMapTex.set( mTexSize, mTexSize,
ShadowMapFormat, &ShadowMapProfile,
"SingleLightShadowMap" );
}
GFXFrustumSaver frustSaver;
GFXTransformSaver saver;
MatrixF lightMatrix;
calcLightMatrices( lightMatrix, diffuseState->getCameraFrustum() );
lightMatrix.inverse();
GFX->setWorldMatrix(lightMatrix);
const MatrixF& lightProj = GFX->getProjectionMatrix();
mWorldToLightProj = lightProj * lightMatrix;
// Render the shadowmap!
GFX->pushActiveRenderTarget();
mTarget->attachTexture( GFXTextureTarget::Color0, mShadowMapTex );
mTarget->attachTexture( GFXTextureTarget::DepthStencil,
_getDepthTarget( mShadowMapTex->getWidth(), mShadowMapTex->getHeight() ) );
GFX->setActiveRenderTarget(mTarget);
GFX->clear(GFXClearStencil | GFXClearZBuffer | GFXClearTarget, ColorI(255,255,255), 1.0f, 0);
SceneManager* sceneManager = diffuseState->getSceneManager();
SceneRenderState shadowRenderState
(
sceneManager,
SPT_Shadow,
SceneCameraState::fromGFXWithViewport( diffuseState->getViewport() ),
renderPass
);
shadowRenderState.getMaterialDelegate().bind( this, &LightShadowMap::getShadowMaterial );
shadowRenderState.renderNonLightmappedMeshes( true );
shadowRenderState.renderLightmappedMeshes( bUseLightmappedGeometry );
shadowRenderState.setDiffuseCameraTransform( diffuseState->getCameraTransform() );
shadowRenderState.setWorldToScreenScale( diffuseState->getWorldToScreenScale() );
sceneManager->renderSceneNoLights( &shadowRenderState, SHADOW_TYPEMASK );
_debugRender( &shadowRenderState );
mTarget->resolve();
GFX->popActiveRenderTarget();
}
void PSSMLightShadowMap::_render( RenderPassManager* renderPass,
const SceneRenderState *diffuseState )
{
PROFILE_SCOPE(PSSMLightShadowMap_render);
const ShadowMapParams *params = mLight->getExtended<ShadowMapParams>();
const LightMapParams *lmParams = mLight->getExtended<LightMapParams>();
const bool bUseLightmappedGeometry = lmParams ? !lmParams->representedInLightmap || lmParams->includeLightmappedGeometryInShadow : true;
const U32 texSize = getBestTexSize( params->numSplits < 4 ? params->numSplits : 2 );
if ( mShadowMapTex.isNull() ||
mNumSplits != params->numSplits ||
mTexSize != texSize )
{
_setNumSplits( params->numSplits, texSize );
mShadowMapDepth = _getDepthTarget( mShadowMapTex->getWidth(), mShadowMapTex->getHeight() );
}
mLogWeight = params->logWeight;
Frustum fullFrustum( diffuseState->getCameraFrustum() );
fullFrustum.cropNearFar(fullFrustum.getNearDist(), params->shadowDistance);
GFXFrustumSaver frustSaver;
GFXTransformSaver saver;
// Set our render target
GFX->pushActiveRenderTarget();
mTarget->attachTexture( GFXTextureTarget::Color0, mShadowMapTex );
mTarget->attachTexture( GFXTextureTarget::DepthStencil, mShadowMapDepth );
GFX->setActiveRenderTarget( mTarget );
GFX->clear( GFXClearStencil | GFXClearZBuffer | GFXClearTarget, ColorI(255,255,255), 1.0f, 0 );
// Calculate our standard light matrices
MatrixF lightMatrix;
calcLightMatrices( lightMatrix, diffuseState->getCameraFrustum() );
lightMatrix.inverse();
MatrixF lightViewProj = GFX->getProjectionMatrix() * lightMatrix;
// TODO: This is just retrieving the near and far calculated
// in calcLightMatrices... we should make that clear.
F32 pnear, pfar;
GFX->getFrustum( NULL, NULL, NULL, NULL, &pnear, &pfar, NULL );
// Set our view up
GFX->setWorldMatrix(lightMatrix);
MatrixF toLightSpace = lightMatrix; // * invCurrentView;
_calcSplitPos(fullFrustum);
mWorldToLightProj = GFX->getProjectionMatrix() * toLightSpace;
// Apply the PSSM
const F32 savedSmallestVisible = TSShapeInstance::smSmallestVisiblePixelSize;
const F32 savedDetailAdjust = TSShapeInstance::smDetailAdjust;
TSShapeInstance::smDetailAdjust *= smDetailAdjustScale;
TSShapeInstance::smSmallestVisiblePixelSize = smSmallestVisiblePixelSize;
for (U32 i = 0; i < mNumSplits; i++)
{
GFXTransformSaver saver;
// Calculate a sub-frustum
Frustum subFrustum(fullFrustum);
subFrustum.cropNearFar(mSplitDist[i], mSplitDist[i+1]);
// Calculate our AABB in the light's clip space.
Box3F clipAABB = _calcClipSpaceAABB(subFrustum, lightViewProj, fullFrustum.getFarDist());
// Calculate our crop matrix
Point3F scale(2.0f / (clipAABB.maxExtents.x - clipAABB.minExtents.x),
2.0f / (clipAABB.maxExtents.y - clipAABB.minExtents.y),
1.0f);
// TODO: This seems to produce less "pops" of the
// shadow resolution as the camera spins around and
// it should produce pixels that are closer to being
// square.
//
// Still is it the right thing to do?
//
scale.y = scale.x = ( getMin( scale.x, scale.y ) );
//scale.x = mFloor(scale.x);
//scale.y = mFloor(scale.y);
Point3F offset( -0.5f * (clipAABB.maxExtents.x + clipAABB.minExtents.x) * scale.x,
-0.5f * (clipAABB.maxExtents.y + clipAABB.minExtents.y) * scale.y,
0.0f );
MatrixF cropMatrix(true);
cropMatrix.scale(scale);
cropMatrix.setPosition(offset);
_roundProjection(lightMatrix, cropMatrix, offset, i);
cropMatrix.setPosition(offset);
// Save scale/offset for shader computations
mScaleProj[i].set(scale);
mOffsetProj[i].set(offset);
// Adjust the far plane to the max z we got (maybe add a little to deal with split overlap)
bool isOrtho;
{
F32 left, right, bottom, top, nearDist, farDist;
GFX->getFrustum(&left, &right, &bottom, &top, &nearDist, &farDist,&isOrtho);
// BTRTODO: Fix me!
farDist = clipAABB.maxExtents.z;
if (!isOrtho)
GFX->setFrustum(left, right, bottom, top, nearDist, farDist);
else
{
// Calculate a new far plane, add a fudge factor to avoid bringing
// the far plane in too close.
F32 newFar = pfar * clipAABB.maxExtents.z + 1.0f;
mFarPlaneScalePSSM[i] = (pfar - pnear) / (newFar - pnear);
GFX->setOrtho(left, right, bottom, top, pnear, newFar, true);
}
}
// Crop matrix multiply needs to be post-projection.
MatrixF alightProj = GFX->getProjectionMatrix();
alightProj = cropMatrix * alightProj;
// Set our new projection
GFX->setProjectionMatrix(alightProj);
// Render into the quad of the shadow map we are using.
GFX->setViewport(mViewports[i]);
SceneManager* sceneManager = diffuseState->getSceneManager();
// The frustum is currently the full size and has not had
// cropping applied.
//
// We make that adjustment here.
const Frustum& uncroppedFrustum = GFX->getFrustum();
Frustum croppedFrustum;
scale *= 0.5f;
croppedFrustum.set(
isOrtho,
uncroppedFrustum.getNearLeft() / scale.x,
uncroppedFrustum.getNearRight() / scale.x,
uncroppedFrustum.getNearTop() / scale.y,
uncroppedFrustum.getNearBottom() / scale.y,
uncroppedFrustum.getNearDist(),
uncroppedFrustum.getFarDist(),
uncroppedFrustum.getTransform()
);
MatrixF camera = GFX->getWorldMatrix();
camera.inverse();
croppedFrustum.setTransform( camera );
// Setup the scene state and use the diffuse state
// camera position and screen metrics values so that
// lod is done the same as in the diffuse pass.
SceneRenderState shadowRenderState
(
sceneManager,
SPT_Shadow,
SceneCameraState( diffuseState->getViewport(), croppedFrustum,
GFX->getWorldMatrix(), GFX->getProjectionMatrix() ),
renderPass
);
shadowRenderState.getMaterialDelegate().bind( this, &LightShadowMap::getShadowMaterial );
shadowRenderState.renderNonLightmappedMeshes( true );
shadowRenderState.renderLightmappedMeshes( bUseLightmappedGeometry );
shadowRenderState.setDiffuseCameraTransform( diffuseState->getCameraTransform() );
shadowRenderState.setWorldToScreenScale( diffuseState->getWorldToScreenScale() );
U32 objectMask = SHADOW_TYPEMASK;
if ( i == mNumSplits-1 && params->lastSplitTerrainOnly )
objectMask = TerrainObjectType;
sceneManager->renderSceneNoLights( &shadowRenderState, objectMask );
_debugRender( &shadowRenderState );
}
// Restore the original TS lod settings.
TSShapeInstance::smSmallestVisiblePixelSize = savedSmallestVisible;
TSShapeInstance::smDetailAdjust = savedDetailAdjust;
// Release our render target
mTarget->resolve();
GFX->popActiveRenderTarget();
}
void DualParaboloidLightShadowMap::_render( RenderPassManager* renderPass,
const SceneRenderState *diffuseState )
{
PROFILE_SCOPE(DualParaboloidLightShadowMap_render);
const ShadowMapParams *p = mLight->getExtended<ShadowMapParams>();
const LightMapParams *lmParams = mLight->getExtended<LightMapParams>();
const bool bUseLightmappedGeometry = lmParams ? !lmParams->representedInLightmap || lmParams->includeLightmappedGeometryInShadow : true;
const U32 texSize = getBestTexSize( 2 );
if ( mShadowMapTex.isNull() ||
mTexSize != texSize )
{
mTexSize = texSize;
mShadowMapTex.set( mTexSize * 2, mTexSize,
ShadowMapFormat, &ShadowMapProfile,
"DualParaboloidLightShadowMap" );
mShadowMapDepth = _getDepthTarget( mShadowMapTex->getWidth(), mShadowMapTex->getHeight() );
}
GFXFrustumSaver frustSaver;
GFXTransformSaver saver;
// Set and Clear target
GFX->pushActiveRenderTarget();
mTarget->attachTexture(GFXTextureTarget::Color0, mShadowMapTex);
mTarget->attachTexture( GFXTextureTarget::DepthStencil, mShadowMapDepth );
GFX->setActiveRenderTarget(mTarget);
GFX->clear(GFXClearTarget | GFXClearStencil | GFXClearZBuffer, ColorI::WHITE, 1.0f, 0);
const bool bUseSinglePassDPM = (p->shadowType == ShadowType_DualParaboloidSinglePass);
// Set up matrix and visible distance
mWorldToLightProj = mLight->getTransform();
mWorldToLightProj.inverse();
const F32 &lightRadius = mLight->getRange().x;
const F32 paraboloidNearPlane = 0.01f;
const F32 renderPosOffset = 0.01f;
// Alter for creation of scene state if this is a single pass map
if(bUseSinglePassDPM)
{
VectorF camDir;
MatrixF temp = mLight->getTransform();
temp.getColumn(1, &camDir);
temp.setPosition(mLight->getPosition() - camDir * (lightRadius + renderPosOffset));
temp.inverse();
GFX->setWorldMatrix(temp);
GFX->setOrtho(-lightRadius, lightRadius, -lightRadius, lightRadius, paraboloidNearPlane, 2.0f * lightRadius, true);
}
else
{
VectorF camDir;
MatrixF temp = mLight->getTransform();
temp.getColumn(1, &camDir);
temp.setPosition(mLight->getPosition() - camDir * renderPosOffset);
temp.inverse();
GFX->setWorldMatrix(temp);
GFX->setOrtho(-lightRadius, lightRadius, -lightRadius, lightRadius, paraboloidNearPlane, lightRadius, true);
}
SceneManager* sceneManager = diffuseState->getSceneManager();
// Front map render
{
SceneRenderState frontMapRenderState
(
sceneManager,
SPT_Shadow,
SceneCameraState::fromGFXWithViewport( diffuseState->getViewport() ),
renderPass
);
frontMapRenderState.getMaterialDelegate().bind( this, &LightShadowMap::getShadowMaterial );
frontMapRenderState.renderNonLightmappedMeshes( true );
frontMapRenderState.renderLightmappedMeshes( bUseLightmappedGeometry );
frontMapRenderState.setDiffuseCameraTransform( diffuseState->getCameraTransform() );
frontMapRenderState.setWorldToScreenScale( diffuseState->getWorldToScreenScale() );
if(bUseSinglePassDPM)
{
GFX->setWorldMatrix(mWorldToLightProj);
frontMapRenderState.getRenderPass()->getMatrixSet().setSceneView(mWorldToLightProj);
GFX->setOrtho(-lightRadius, lightRadius, -lightRadius, lightRadius, paraboloidNearPlane, lightRadius, true);
}
GFXDEBUGEVENT_SCOPE( DualParaboloidLightShadowMap_Render_FrontFacingParaboloid, ColorI::RED );
mShadowMapScale.set(0.5f, 1.0f);
mShadowMapOffset.set(-0.5f, 0.0f);
sceneManager->renderSceneNoLights( &frontMapRenderState, SHADOW_TYPEMASK );
_debugRender( &frontMapRenderState );
}
// Back map render
if(!bUseSinglePassDPM)
{
GFXDEBUGEVENT_SCOPE( DualParaboloidLightShadowMap_Render_BackFacingParaboloid, ColorI::RED );
mShadowMapScale.set(0.5f, 1.0f);
mShadowMapOffset.set(0.5f, 0.0f);
// Invert direction on camera matrix
VectorF right, forward;
MatrixF temp = mLight->getTransform();
temp.getColumn( 1, &forward );
temp.getColumn( 0, &right );
forward *= -1.0f;
right *= -1.0f;
temp.setColumn( 1, forward );
temp.setColumn( 0, right );
temp.setPosition(mLight->getPosition() - forward * -renderPosOffset);
temp.inverse();
GFX->setWorldMatrix(temp);
// Create an inverted scene state for the back-map
SceneRenderState backMapRenderState
(
sceneManager,
SPT_Shadow,
SceneCameraState::fromGFXWithViewport( diffuseState->getViewport() ),
renderPass
);
backMapRenderState.getMaterialDelegate().bind( this, &LightShadowMap::getShadowMaterial );
backMapRenderState.renderNonLightmappedMeshes( true );
backMapRenderState.renderLightmappedMeshes( bUseLightmappedGeometry );
backMapRenderState.setDiffuseCameraTransform( diffuseState->getCameraTransform() );
backMapRenderState.setWorldToScreenScale( diffuseState->getWorldToScreenScale() );
backMapRenderState.getRenderPass()->getMatrixSet().setSceneView(temp);
// Draw scene
sceneManager->renderSceneNoLights( &backMapRenderState );
_debugRender( &backMapRenderState );
}
mTarget->resolve();
GFX->popActiveRenderTarget();
}