void ShadowsDemo::onDraw() {
App::onDraw();
const auto device = graphicsDevice();
device->setClearColor(0.0f, 0.0f, 0.0f, 0.0f);
device->clear(ciri::ClearFlags::Color | ciri::ClearFlags::Depth);
device->setRasterizerState(_rasterState);
device->restoreDefaultBlendState();
if( _spotlightShader->isValid() && _directionalShader->isValid() ) {
const cc::Mat4f& cameraViewProj = _camera.getProj() * _camera.getView();
bool firstLight = true;
Light::Type boundLightType = Light::Type::Invalid;
for( auto& light : _lights ) {
// compute light matrices
//const cc::Mat4f& lightView = light.view();
//const cc::Mat4f& lightProj = light.proj();//cc::math::perspectiveRH(45.0f, 1.0f, 0.1f, light.range());//light.proj();
//const cc::Mat4f lightViewProj = lightProj * lightView;
if( light.type() == Light::Type::Directional ) {
//light.computeViewProjFromFrustum(BoundingFrustum(cameraViewProj));
light.computeViewProjFromFrustum(BoundingFrustum(_camera.getFov(), _camera.getAspect(), _camera.getNearPlane(), _camera.getFarPlane(), _camera.getPosition(), _camera.getFpsFront(), _camera.getUp()));
//light.computeViewProjOrtho(_camera.getView(), _camera.getFov(), _camera.getAspect(), _camera.getNearPlane(), _camera.getFarPlane());
}
const cc::Mat4f lightViewProj = light.proj() * light.view();
if( light.castShadows() ) {
device->setDepthStencilState(device->getDefaultDepthStencilDefault());
// set and clear render target
ciri::IRenderTarget2D* depthTarget = _shadowTarget.get();
device->setRenderTargets(&depthTarget, 1);
device->setClearColor(0.0f, 0.0f, 0.0f, 0.0f);
device->clear(ciri::ClearFlags::Color | ciri::ClearFlags::Depth);
// apply depth shader
device->applyShader(_depthShader);
// set viewport to depth size
device->setViewport(ciri::Viewport(0, 0, _shadowTarget->getDepth()->getWidth(), _shadowTarget->getDepth()->getHeight()));
// render all models
for( auto& mdl : _models ) {
_depthConstants.xform = lightViewProj * mdl->getXform().getWorld();
_depthConstantsBuffer->setData(sizeof(DepthConstants), &_depthConstants);
device->setVertexBuffer(mdl->getVertexBuffer());
if( mdl->getIndexBuffer() != nullptr ) {
device->setIndexBuffer(mdl->getIndexBuffer());
device->drawIndexed(ciri::PrimitiveTopology::TriangleList, mdl->getIndexBuffer()->getIndexCount());
} else {
device->drawArrays(ciri::PrimitiveTopology::TriangleList, mdl->getVertexBuffer()->getVertexCount(), 0);
}
}
// reser viewport to screen
device->setViewport(ciri::Viewport(0, 0, window()->getWidth(), window()->getHeight()));
// restore default render targets
device->restoreDefaultRenderTargets();
}
switch( light.type() ) {
case Light::Type::Directional: {
if( boundLightType != Light::Type::Directional || light.castShadows() ) {
boundLightType = Light::Type::Directional;
device->applyShader(_directionalShader);
device->setTexture2D(0, _shadowTarget->getDepth(), ciri::ShaderStage::Pixel);
device->setSamplerState(0, _shadowSampler, ciri::ShaderStage::Pixel);
}
_directionalConstants.LightDirection = light.direction();
_directionalConstants.LightColor = light.diffuseColor();
_directionalConstants.LightIntensity = light.diffuseIntensity();
_directionalConstants.campos = _camera.getPosition();
_directionalConstants.CastShadows = light.castShadows();
_directionalConstants.lightViewProj = lightViewProj;
for( auto& mdl : _models ) {
if( !mdl->isValid() ) {
continue;
}
_directionalConstants.world = mdl->getXform().getWorld();
_directionalConstants.xform = cameraViewProj * _directionalConstants.world;
_directionalConstantsBuffer->setData(sizeof(DirectionalConstants), &_directionalConstants);
device->setVertexBuffer(mdl->getVertexBuffer());
if( mdl->getIndexBuffer() != nullptr ) {
device->setIndexBuffer(mdl->getIndexBuffer());
device->drawIndexed(ciri::PrimitiveTopology::TriangleList, mdl->getIndexBuffer()->getIndexCount());
} else {
device->drawArrays(ciri::PrimitiveTopology::TriangleList, mdl->getVertexBuffer()->getVertexCount(), 0);
}
}
break;
}
case Light::Type::Spot: {
if( boundLightType != Light::Type::Spot || light.castShadows() ) {
boundLightType = Light::Type::Spot;
device->applyShader(_spotlightShader);
device->setTexture2D(0, _shadowTarget->getDepth(), ciri::ShaderStage::Pixel);
device->setSamplerState(0, _shadowSampler, ciri::ShaderStage::Pixel);
}
_spotlightConstants.LightPosition = light.position();
_spotlightConstants.LightDirection = light.direction();
_spotlightConstants.LightColor = light.diffuseColor();
_spotlightConstants.LightCosInner = light.cosConeInnerAngle(true);
_spotlightConstants.LightCosOuter = light.cosConeOuterAngle(true);
_spotlightConstants.LightIntensity = light.diffuseIntensity();
_spotlightConstants.LightRange = light.range();
_spotlightConstants.CastShadows = light.castShadows();
_spotlightConstants.lightViewProj = lightViewProj;
for( auto& mdl : _models ) {
_spotlightConstants.world = mdl->getXform().getWorld();
_spotlightConstants.xform = cameraViewProj * _spotlightConstants.world;
_spotlightConstantsBuffer->setData(sizeof(SpotlightConstants), &_spotlightConstants);
device->setVertexBuffer(mdl->getVertexBuffer());
if( mdl->getIndexBuffer() != nullptr ) {
device->setIndexBuffer(mdl->getIndexBuffer());
device->drawIndexed(ciri::PrimitiveTopology::TriangleList, mdl->getIndexBuffer()->getIndexCount());
} else {
device->drawArrays(ciri::PrimitiveTopology::TriangleList, mdl->getVertexBuffer()->getVertexCount(), 0);
}
}
break;
}
}
if( firstLight ) {
firstLight = false;
device->setBlendState(_additiveBlendState);
}
}
}
device->present();
}
void init() {
setTexture2D(img, "img.png");
}
