AppDemoSceneShaderIBL Class Reference

Class for image base lighting demo scene. More...

#include <AppDemoSceneShaderIBL.h>

Inheritance diagram for AppDemoSceneShaderIBL:

Public Member Functions
	AppDemoSceneShaderIBL ()
void	registerAssetsToLoad (SLAssetLoader &al) override
	All scene specific assets have to be registered for async loading in here. More...
void	assemble (SLAssetManager *am, SLSceneView *sv) override
	After parallel loading of the assets the scene gets assembled in here. More...
Public Member Functions inherited from SLScene
	SLScene (const SLstring &name)
	~SLScene () override
void	initOculus (SLstring shaderDir)
void	root3D (SLNode *root3D)
void	root2D (SLNode *root2D)
void	skybox (SLSkybox *skybox)
void	stopAnimations (SLbool stop)
void	info (SLstring i)
void	loadTimeMS (SLfloat loadTimeMS)
SLAnimManager &	animManager ()
SLAssetManager *	assetManager ()
SLNode *	root3D ()
SLNode *	root2D ()
SLSkybox *	skybox ()
SLstring &	info ()
SLfloat	elapsedTimeMS () const
SLfloat	elapsedTimeSec () const
SLVEventHandler &	eventHandlers ()
SLfloat	loadTimeMS () const
SLVLight &	lights ()
SLfloat	fps () const
AvgFloat &	frameTimesMS ()
AvgFloat &	updateTimesMS ()
AvgFloat &	updateAnimTimesMS ()
AvgFloat &	updateAABBTimesMS ()
AvgFloat &	updateDODTimesMS ()
SLNode *	singleNodeSelected ()
	Returns the node if only one is selected. See also SLMesh::selectNodeMesh. More...
SLMesh *	singleMeshFullSelected ()
	Returns the node if only one is selected. See also SLMesh::selectNodeMesh. More...
SLVNode &	selectedNodes ()
SLVMesh &	selectedMeshes ()
SLbool	stopAnimations () const
SLint	numSceneCameras ()
	Returns the number of camera nodes in the scene. More...
SLCamera *	nextCameraInScene (SLCamera *activeSVCam)
	Returns the next camera in the scene if there is one. More...
bool	onUpdate (bool renderTypeIsRT, bool voxelsAreShown, bool forceCPUSkinning)
	Updates animations and AABBs. More...
void	init (SLAssetManager *am)
virtual void	unInit ()
void	selectNodeMesh (SLNode *nodeToSelect, SLMesh *meshToSelect)
	Handles the full mesh selection from double-clicks. More...
void	deselectAllNodesAndMeshes ()
	Deselects all nodes and its meshes. More...
SLGLOculus *	oculus ()
Public Member Functions inherited from SLObject
	SLObject (const SLstring &Name="", const SLstring &url="")
virtual	~SLObject ()
void	name (const SLstring &Name)
void	url (const SLstring &url)
const SLstring &	name () const
const SLstring &	url () const

Private Attributes
SLGLTexture *	_texC
SLGLTexture *	_texN
SLGLTexture *	_texM
SLGLTexture *	_texR
SLGLTexture *	_texA
SLSkybox *	_skybox

Additional Inherited Members
Protected Attributes inherited from SLScene
SLVLight	_lights
	Vector of all lights. More...
SLVEventHandler	_eventHandlers
	Vector of all event handler. More...
SLAnimManager	_animManager
	Animation manager instance. More...
SLAssetManager *	_assetManager
	Pointer to the external assetManager. More...
SLNode *	_root3D
	Root node for 3D scene. More...
SLNode *	_root2D
	Root node for 2D scene displayed in ortho projection. More...
SLSkybox *	_skybox
	pointer to skybox More...
SLstring	_info
	scene info string More...
SLVNode	_selectedNodes
	Vector of selected nodes. See SLMesh::selectNodeMesh. More...
SLVMesh	_selectedMeshes
	Vector of selected meshes. See SLMesh::selectNodeMesh. More...
SLfloat	_loadTimeMS
	time to load scene in ms More...
SLfloat	_frameTimeMS
	Last frame time in ms. More...
SLfloat	_lastUpdateTimeMS
	Last time after update in ms. More...
SLfloat	_fps
	Averaged no. of frames per second. More...
AvgFloat	_frameTimesMS
	Averaged total time per frame in ms. More...
AvgFloat	_updateTimesMS
	Averaged time for update in ms. More...
AvgFloat	_updateAABBTimesMS
	Averaged time for update the nodes AABB in ms. More...
AvgFloat	_updateAnimTimesMS
	Averaged time for update the animations in ms. More...
AvgFloat	_updateDODTimesMS
	Averaged time for update the SLEntities graph. More...
SLbool	_stopAnimations
	Global flag for stopping all animations. More...
std::unique_ptr< SLGLOculus >	_oculus
	Oculus Rift interface. More...
Protected Attributes inherited from SLObject
SLstring	_name
	name of an object More...
SLstring	_url
	uniform resource locator More...

Detailed Description

Class for image base lighting demo scene.

Definition at line 20 of file AppDemoSceneShaderIBL.h.

Constructor & Destructor Documentation

AppDemoSceneShaderIBL()

AppDemoSceneShaderIBL::AppDemoSceneShaderIBL

(

)

Definition at line 21 of file AppDemoSceneShaderIBL.cpp.

  : SLScene("Image Based Lighting Test Scene")
{
    info("Image-based lighting from skybox using high dynamic range images. "
         "It uses the Cook-Torrance reflection model also to calculate the "
         "ambient light part from the surrounding HDR skybox.");
}

Member Function Documentation

assemble()

void AppDemoSceneShaderIBL::assemble ( SLAssetManager *  am, SLSceneView *  sv  )

overridevirtual

After parallel loading of the assets the scene gets assembled in here.

Remarks

All scene-specific assets have to be loaded async by overriding SLScene::registerAssetsToLoad and SLScene::assemble. Async loading and assembling means that it happens in a parallel thread and that in there are no OpenGL calls allowed. OpenGL calls are only allowed in the main thread. It is important that all object instantiations within SLScene::assemble do NOT call any OpenGL functions (gl*) because they happen in a parallel thread. All objects that get rendered have to do their initialization when they are used the first time during rendering in the main thread.

Reimplemented from SLScene.

Definition at line 55 of file AppDemoSceneShaderIBL.cpp.

{
    // Create a scene group node
    SLNode* scene = new SLNode("scene node");
    this->root3D(scene);
 
    // Create camera and initialize its parameters
    SLCamera* cam1 = new SLCamera("Camera 1");
    cam1->translation(0, 0, 30);
    cam1->lookAt(0, 0, 0);
    cam1->background().colors(SLCol4f(0.2f, 0.2f, 0.2f));
    cam1->focalDist(30);
    cam1->setInitialState();
    scene->addChild(cam1);
 
    // Add directional light with a position that corresponds roughly to the sun direction
    SLLight::gamma        = 2.2f;
    SLLightDirect* light1 = new SLLightDirect(am,
                                              this,
                                              4.0f,
                                              .3f,
                                              2.0f,
                                              0.5f,
                                              0,
                                              1,
                                              1);
    light1->lookAt(0, 0, 0);
    light1->attenuation(1, 0, 0);
    light1->createsShadows(true);
    light1->createShadowMapAutoSize(cam1, SLVec2i(2048, 2048), 4);
    light1->shadowMap()->cascadesFactor(30.0);
    light1->doSmoothShadows(true);
    light1->castsShadows(false);
    light1->shadowMinBias(0.001f);
    light1->shadowMaxBias(0.003f);
    scene->addChild(light1);
 
    // Create spheres and materials with roughness & metallic values between 0 and 1
    const SLint nrRows  = 7;
    const SLint nrCols  = 7;
    SLfloat     spacing = 2.5f;
    SLfloat     maxX    = (float)((int)(nrCols / 2) * spacing);
    SLfloat     maxY    = (float)((int)(nrRows / 2) * spacing);
    SLfloat     deltaR  = 1.0f / (float)(nrRows - 1);
    SLfloat     deltaM  = 1.0f / (float)(nrCols - 1);
 
    SLMaterial* mat[nrRows * nrCols];
    SLint       i = 0;
    SLfloat     y = -maxY;
    for (SLint m = 0; m < nrRows; ++m)
    {
        SLfloat x = -maxX;
        for (SLint r = 0; r < nrCols; ++r)
        {
            if (m == nrRows / 2 && r == nrCols / 2)
            {
                // The center sphere has roughness and metallic encoded in textures
                // and the prefiltered textures for IBL
                mat[i] = new SLMaterial(am,
                                        "IBLMatTex",
                                        _skybox,
                                        _texC,
                                        _texN,
                                        _texM,
                                        _texR,
                                        _texA);
            }
            else
            {
                // Cook-Torrance material with IBL but without textures
                mat[i] = new SLMaterial(am,
                                        "IBLMat",
                                        _skybox,
                                        SLCol4f::WHITE * 0.5f,
                                        Utils::clamp((float)r * deltaR, 0.05f, 1.0f),
                                        (float)m * deltaM);
            }
 
            SLNode* node = new SLNode(new SLSpheric(am,
                                                    1.0f,
                                                    0.0f,
                                                    180.0f,
                                                    32,
                                                    32,
                                                    "Sphere",
                                                    mat[i]));
            node->translate(x, y, 0);
            scene->addChild(node);
            x += spacing;
            i++;
        }
        y += spacing;
    }
 
    sv->camera(cam1);
    this->skybox(_skybox);
 
    // Save energy
    sv->doWaitOnIdle(true);
}

registerAssetsToLoad()

void AppDemoSceneShaderIBL::registerAssetsToLoad ( SLAssetLoader &  al )

overridevirtual

All scene specific assets have to be registered for async loading in here.

All assets the should be loaded in parallel must be registered in here.

Remarks

All scene sspecific assets have to be loaded async by overriding SLScene::registerAssetsToLoad and SLScene::assemble. Async loading and assembling means that it happens in a parallel thread and that in there are no OpenGL calls allowed. OpenGL calls are only allowed in the main thread.

Reimplemented from SLScene.

Definition at line 30 of file AppDemoSceneShaderIBL.cpp.

{
    al.addTextureToLoad(_texC,
                        AppCommon::texturePath +
                          "gold-scuffed_2048_C.png");
    al.addTextureToLoad(_texN,
                        AppCommon::texturePath +
                          "gold-scuffed_2048_N.png");
    al.addTextureToLoad(_texM,
                        AppCommon::texturePath +
                          "gold-scuffed_2048_M.png");
    al.addTextureToLoad(_texR,
                        AppCommon::texturePath +
                          "gold-scuffed_2048_R.png");
    al.addTextureToLoad(_texA,
                        AppCommon::texturePath +
                          "gold-scuffed_2048_A.png");
 
    al.addSkyboxToLoad(_skybox,
                       al.texturePath() + "env_barce_rooftop.hdr",
                       SLVec2i(256, 256),
                       "HDR Skybox");
}

Member Data Documentation

_skybox

SLSkybox* AppDemoSceneShaderIBL::_skybox

private

Definition at line 51 of file AppDemoSceneShaderIBL.h.

_texA

SLGLTexture* AppDemoSceneShaderIBL::_texA

private

Definition at line 50 of file AppDemoSceneShaderIBL.h.

_texC

SLGLTexture* AppDemoSceneShaderIBL::_texC

private

Definition at line 46 of file AppDemoSceneShaderIBL.h.

_texM

SLGLTexture* AppDemoSceneShaderIBL::_texM

private

Definition at line 48 of file AppDemoSceneShaderIBL.h.

_texN

SLGLTexture* AppDemoSceneShaderIBL::_texN

private

Definition at line 47 of file AppDemoSceneShaderIBL.h.

_texR

SLGLTexture* AppDemoSceneShaderIBL::_texR

private

Definition at line 49 of file AppDemoSceneShaderIBL.h.

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The documentation for this class was generated from the following files:

• AppDemoSceneShaderIBL.h
• AppDemoSceneShaderIBL.cpp