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Fix issue in shadow mapping

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This commit is contained in:
Daniel Chappuis 2015-08-03 23:05:55 +02:00
parent a355a563f8
commit c7bff41ba8
15 changed files with 210 additions and 155 deletions
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124
testbed/common/Box.cpp
View File

@ -31,32 +31,85 @@
// Initialize static variables
openglframework::VertexBufferObject Box::mVBOVertices(GL_ARRAY_BUFFER);
openglframework::VertexBufferObject Box::mVBOIndices(GL_ELEMENT_ARRAY_BUFFER);
openglframework::VertexBufferObject Box::mVBONormals(GL_ARRAY_BUFFER);
openglframework::VertexArrayObject Box::mVAO;
int Box::totalNbBoxes = 0;
VertexData Box::mCubeVertices[8] = {
{openglframework::Vector3(1,1,1),openglframework::Vector3(1,1,1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(-1,1,1),openglframework::Vector3(-1,1,1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(-1,-1,1),openglframework::Vector3(-1,-1,1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(1,-1,1),openglframework::Vector3(1,-1,1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(1,-1,-1),openglframework::Vector3(1,-1,-1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(-1,-1,-1),openglframework::Vector3(-1,-1,-1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(-1,1,-1),openglframework::Vector3(-1,1,-1),openglframework::Color(1,0,0,1)},
{openglframework::Vector3(1,1,-1),openglframework::Vector3(1,1,-1),openglframework::Color(1,0,0,1)}
GLfloat Box::mCubeVertices[108] = {
-1.0f,-1.0f,-1.0f, // triangle 1 : begin
-1.0f,-1.0f, 1.0f,
-1.0f, 1.0f, 1.0f, // triangle 1 : end
1.0f, 1.0f,-1.0f, // triangle 2 : begin
-1.0f,-1.0f,-1.0f,
-1.0f, 1.0f,-1.0f, // triangle 2 : end
1.0f,-1.0f, 1.0f,
-1.0f,-1.0f,-1.0f,
1.0f,-1.0f,-1.0f,
1.0f, 1.0f,-1.0f,
1.0f,-1.0f,-1.0f,
-1.0f,-1.0f,-1.0f,
-1.0f,-1.0f,-1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f,-1.0f,
1.0f,-1.0f, 1.0f,
-1.0f,-1.0f, 1.0f,
-1.0f,-1.0f,-1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f,-1.0f, 1.0f,
1.0f,-1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f,-1.0f,-1.0f,
1.0f, 1.0f,-1.0f,
1.0f,-1.0f,-1.0f,
1.0f, 1.0f, 1.0f,
1.0f,-1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f,-1.0f,
-1.0f, 1.0f,-1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f,-1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
1.0f,-1.0f, 1.0f
};
GLfloat Box::mCubeNormals[108] = {
-1.0f, 0.0f, 0.0f, // triangle 1 : begin
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f, // triangle 1 : end
0.0f, 0.0f,-1.0f, // triangle 2 : begin
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f, // triangle 2 : end
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,//
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f,
0.0f, 0.0f,-1.0f,//
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f,0.0f,//
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,
0.0f,-1.0f, 0.0f,//
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,//
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,//
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,//
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,//
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,//
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f//
};
GLuint Box::mCubeIndices[36] = { 0, 1, 2,
2, 3, 0,
7, 4, 5,
5, 6, 7,
6, 5, 2,
2, 1, 6,
7, 0, 3,
3, 4, 7,
7, 6, 1,
1, 0, 7,
3, 2, 5,
5, 4, 3};
// Constructor
Box::Box(const openglframework::Vector3& size, const openglframework::Vector3 &position,
reactphysics3d::CollisionWorld* world)
@ -161,8 +214,8 @@ Box::~Box() {
if (totalNbBoxes == 1) {
// Destroy the VBOs and VAO
mVBOIndices.destroy();
mVBOVertices.destroy();
mVBONormals.destroy();
mVAO.destroy();
}
@ -201,17 +254,20 @@ void Box::render(openglframework::Shader& shader,
GLint vertexNormalLoc = shader.getAttribLocation("vertexNormal", false);
glEnableVertexAttribArray(vertexPositionLoc);
if (vertexNormalLoc != -1) glEnableVertexAttribArray(vertexNormalLoc);
glVertexAttribPointer(vertexPositionLoc, 3, GL_FLOAT, GL_FALSE, 0, NULL);
glVertexAttribPointer(vertexPositionLoc, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), MEMBER_OFFSET(VertexData, position));
if (vertexNormalLoc != -1) glVertexAttribPointer(vertexNormalLoc, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), MEMBER_OFFSET(VertexData, normal));
mVBONormals.bind();
if (vertexNormalLoc != -1) glEnableVertexAttribArray(vertexNormalLoc);
if (vertexNormalLoc != -1) glVertexAttribPointer(vertexNormalLoc, 3, GL_FLOAT, GL_FALSE, 0, NULL);
// Draw the geometry of the box
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, (char*)NULL);
glDrawArrays(GL_TRIANGLES, 0, 36);
glDisableVertexAttribArray(vertexPositionLoc);
if (vertexNormalLoc != -1) glDisableVertexAttribArray(vertexNormalLoc);
mVBONormals.unbind();
mVBOVertices.unbind();
// Unbind the VAO
@ -256,11 +312,11 @@ void Box::createVBOAndVAO() {
mVBOVertices.copyDataIntoVBO(sizeof(mCubeVertices), mCubeVertices, GL_STATIC_DRAW);
mVBOVertices.unbind();
// Create th VBO for the indices data
mVBOIndices.create();
mVBOIndices.bind();
mVBOIndices.copyDataIntoVBO(sizeof(mCubeIndices), mCubeIndices, GL_STATIC_DRAW);
mVBOIndices.unbind();
// Create th VBO for the normals data
mVBONormals.create();
mVBONormals.bind();
mVBONormals.copyDataIntoVBO(sizeof(mCubeNormals), mCubeNormals, GL_STATIC_DRAW);
mVBONormals.unbind();
// Create the VAO for both VBOs
mVAO.create();
@ -270,7 +326,7 @@ void Box::createVBOAndVAO() {
mVBOVertices.bind();
// Bind the VBO of indices
mVBOIndices.bind();
mVBONormals.bind();
// Unbind the VAO
mVAO.unbind();

12
testbed/common/Box.h
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@ -65,17 +65,17 @@ class Box : public openglframework::Object3D {
/// Vertex Buffer Object for the vertices data used to render the box with OpenGL
static openglframework::VertexBufferObject mVBOVertices;
/// Vertex Buffer Object for the indices used to render the box with OpenGL
static openglframework::VertexBufferObject mVBOIndices;
/// Vertex Buffer Object for the normales used to render the box with OpenGL
static openglframework::VertexBufferObject mVBONormals;
/// Vertex Array Object for the vertex data
static openglframework::VertexArrayObject mVAO;
/// Vertex data for each vertex of the cube (used to render the box)
static VertexData mCubeVertices[8];
/// Vertices coordinates of the triangles of the box
static GLfloat mCubeVertices[108];
/// Indices of the cube (used to render the box)
static GLuint mCubeIndices[36];
/// Vertices normals of the triangles of the box
static GLfloat mCubeNormals[108];
/// Total number of boxes created
static int totalNbBoxes;

8
testbed/opengl-framework/src/Texture2D.cpp
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@ -33,13 +33,13 @@
using namespace openglframework;
// Constructor
Texture2D::Texture2D() : mID(0), mLayer(0), mWidth(0), mHeight(0) {
Texture2D::Texture2D() : mID(0), mUnit(0), mWidth(0), mHeight(0) {
}
// Constructor
Texture2D::Texture2D(uint width, uint height, uint internalFormat, uint format, uint type)
: mID(0), mLayer(0), mWidth(0), mHeight(0){
: mID(0), mUnit(0), mWidth(0), mHeight(0) {
// Create the texture
create(width, height, internalFormat, format, type);
@ -52,7 +52,7 @@ Texture2D::~Texture2D() {
// Create the texture
void Texture2D::create(uint width, uint height, uint internalFormat, uint format, uint type,
void* data) {
void* data) {
// Destroy the current texture
destroy();
@ -99,7 +99,7 @@ void Texture2D::destroy() {
if (mID != 0) {
glDeleteTextures(1, &mID);
mID = 0;
mLayer = 0;
mUnit = 0;
mWidth = 0;
mHeight = 0;
}

28
testbed/opengl-framework/src/Texture2D.h
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@ -45,8 +45,8 @@ class Texture2D {
// OpenGL texture ID
GLuint mID;
// Layer of the texture
GLuint mLayer;
// Current texture unit for this texture
GLuint mUnit;
// Width
uint mWidth;
@ -87,11 +87,11 @@ class Texture2D {
// Get the OpenGL texture ID
uint getID() const;
// Get the layer of the texture
uint getLayer() const;
// Get the unit of the texture
uint getUnit() const;
// Set the layer of the texture
void setLayer(uint layer);
// Set the unit of the texture
void setUnit(uint unit);
// Get the width
uint getWidth() const;
@ -103,14 +103,14 @@ class Texture2D {
// Bind the texture
inline void Texture2D::bind() const {
assert(mID != 0);
glActiveTexture(GL_TEXTURE0 + mLayer);
glActiveTexture(GL_TEXTURE0 + mUnit);
glBindTexture(GL_TEXTURE_2D, mID);
}
// Unbind the texture
inline void Texture2D::unbind() const {
assert(mID != 0);
glActiveTexture(GL_TEXTURE0 + mLayer);
glActiveTexture(GL_TEXTURE0 + mUnit);
glBindTexture(GL_TEXTURE_2D, 0);
}
@ -119,14 +119,14 @@ inline uint Texture2D::getID() const {
return mID;
}
// Get the layer of the texture
inline uint Texture2D::getLayer() const {
return mLayer;
// Get the unit of the texture
inline uint Texture2D::getUnit() const {
return mUnit;
}
// Set the layer of the texture
inline void Texture2D::setLayer(uint layer) {
mLayer = layer;
// Set the unit of the texture
inline void Texture2D::setUnit(uint unit) {
mUnit = unit;
}
// Get the width

3
testbed/scenes/collisionshapes/CollisionShapesScene.cpp
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@ -225,9 +225,6 @@ CollisionShapesScene::CollisionShapesScene(const std::string& name)
// Destructor
CollisionShapesScene::~CollisionShapesScene() {
// Destroy the shader
mPhongShader.destroy();
// Destroy all the boxes of the scene
for (std::vector<Box*>::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it) {

17
testbed/scenes/collisionshapes/CollisionShapesScene.h
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@ -46,12 +46,12 @@ namespace collisionshapesscene {
// Constants
const float SCENE_RADIUS = 30.0f;
const int NB_BOXES = 3;
const int NB_CUBES = 3;
const int NB_CONES = 3;
const int NB_CYLINDERS = 3;
const int NB_CAPSULES = 3;
const int NB_MESHES = 2;
const int NB_COMPOUND_SHAPES = 2;
const int NB_CUBES = 0;
const int NB_CONES = 0;
const int NB_CYLINDERS = 0;
const int NB_CAPSULES = 0;
const int NB_MESHES = 0;
const int NB_COMPOUND_SHAPES = 0;
const openglframework::Vector3 BOX_SIZE(2, 2, 2);
const float SPHERE_RADIUS = 1.5f;
const float CONE_RADIUS = 2.0f;
@ -61,7 +61,7 @@ const float CYLINDER_HEIGHT = 5.0f;
const float CAPSULE_RADIUS = 1.0f;
const float CAPSULE_HEIGHT = 1.0f;
const float DUMBBELL_HEIGHT = 1.0f;
const openglframework::Vector3 FLOOR_SIZE(20, 0.5f, 20); // Floor dimensions in meters
const openglframework::Vector3 FLOOR_SIZE(50, 0.5f, 50); // Floor dimensions in meters
const float BOX_MASS = 1.0f;
const float CONE_MASS = 1.0f;
const float CYLINDER_MASS = 1.0f;
@ -76,9 +76,6 @@ class CollisionShapesScene : public SceneDemo {
// -------------------- Attributes -------------------- //
/// Phong shader
openglframework::Shader mPhongShader;
/// All the spheres of the scene
std::vector<Box*> mBoxes;

5
testbed/scenes/cubes/CubesScene.cpp
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@ -41,7 +41,7 @@ CubesScene::CubesScene(const std::string& name)
setScenePosition(center, SCENE_RADIUS);
// Gravity vector in the dynamics world
rp3d::Vector3 gravity(0, rp3d::decimal(-5.81), 0);
rp3d::Vector3 gravity(0, rp3d::decimal(-9.81), 0);
// Time step for the physics simulation
rp3d::decimal timeStep = 1.0f / 60.0f;
@ -100,9 +100,6 @@ CubesScene::CubesScene(const std::string& name)
// Destructor
CubesScene::~CubesScene() {
// Destroy the shader
mPhongShader.destroy();
// Destroy all the cubes of the scene
for (std::vector<Box*>::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it) {

9
testbed/scenes/joints/JointsScene.cpp
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@ -33,11 +33,7 @@ using namespace jointsscene;
// Constructor
JointsScene::JointsScene(const std::string& name)
: SceneDemo(name, SCENE_RADIUS), mLight0(0), mPhongShader("shaders/phong.vert",
"shaders/phong.frag") {
// Move the light 0
mLight0.translateWorld(Vector3(7, 15, 15));
: SceneDemo(name, SCENE_RADIUS) {
// Compute the radius and the center of the scene
openglframework::Vector3 center(0, 5, 0);
@ -87,9 +83,6 @@ JointsScene::JointsScene(const std::string& name)
// Destructor
JointsScene::~JointsScene() {
// Destroy the shader
mPhongShader.destroy();
// Destroy the joints
mDynamicsWorld->destroyJoint(mSliderJoint);
mDynamicsWorld->destroyJoint(mPropellerHingeJoint);

8
testbed/scenes/joints/JointsScene.h
View File

@ -37,7 +37,7 @@ namespace jointsscene {
// Constants
const float SCENE_RADIUS = 30.0f;
const openglframework::Vector3 BOX_SIZE(2, 2, 2); // Box dimensions in meters
const openglframework::Vector3 FLOOR_SIZE(20, 0.5f, 20); // Floor dimensions in meters
const openglframework::Vector3 FLOOR_SIZE(50, 0.5f, 50); // Floor dimensions in meters
const float BOX_MASS = 1.0f; // Box mass in kilograms
const float FLOOR_MASS = 100.0f; // Floor mass in kilograms
const int NB_BALLSOCKETJOINT_BOXES = 7; // Number of Ball-And-Socket chain boxes
@ -50,12 +50,6 @@ class JointsScene : public SceneDemo {
// -------------------- Attributes -------------------- //
/// Light 0
openglframework::Light mLight0;
/// Phong shader
openglframework::Shader mPhongShader;
/// Boxes of Ball-And-Socket joint chain
Box* mBallAndSocketJointChainBoxes[NB_BALLSOCKETJOINT_BOXES];

6
testbed/scenes/raycast/RaycastScene.cpp
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@ -32,14 +32,10 @@ using namespace raycastscene;
// Constructor
RaycastScene::RaycastScene(const std::string& name)
: SceneDemo(name, SCENE_RADIUS), mLight0(0), mCurrentBodyIndex(-1), mAreNormalsDisplayed(false),
mPhongShader("shaders/phong.vert", "shaders/phong.frag"),
: SceneDemo(name, SCENE_RADIUS), mCurrentBodyIndex(-1), mAreNormalsDisplayed(false),
mMeshFolderPath("meshes/"), mRaycastManager(mPhongShader, mMeshFolderPath),
mVBOVertices(GL_ARRAY_BUFFER) {
// Move the light 0
mLight0.translateWorld(Vector3(50, 50, 50));
// Compute the radius and the center of the scene
openglframework::Vector3 center(0, 0, 0);

6
testbed/scenes/raycast/RaycastScene.h
View File

@ -144,12 +144,6 @@ class RaycastScene : public SceneDemo {
// -------------------- Attributes -------------------- //
/// Light 0
openglframework::Light mLight0;
/// Phong shader
openglframework::Shader mPhongShader;
/// Contact point mesh folder path
std::string mMeshFolderPath;

26
testbed/shaders/phong.frag
View File

@ -35,6 +35,7 @@ uniform sampler2D textureSampler; // Texture
uniform sampler2D shadowMapSampler; // Shadow map texture sampler
uniform bool isTexture; // True if we need to use the texture
uniform vec4 vertexColor; // Vertex color
uniform bool isShadowEnabled; // True if shadow mapping is enabled
// In variables
in vec3 vertexPosCameraSpace; // Camera-space position of the vertex
@ -70,20 +71,19 @@ void main() {
vec3 specular = light0SpecularColor * specularFactor;
// Compute shadow factor
float bias = 0.00001;
float shadowBias = -0.000;
vec4 shadowMapUV = shadowMapCoords;
shadowMapUV.z -= shadowBias;
vec4 shadowMapCoordsOverW = shadowMapUV / shadowMapUV.w ;
float distanceInShadowMap = texture(shadowMapSampler, shadowMapCoordsOverW.xy).r + bias;
float shadow = 0.0;
if (shadowMapCoords.w > 0) {
shadow = distanceInShadowMap < shadowMapCoordsOverW.z ? 0.5 : 1.0;
}
if (abs(dot(N, L0)) < 0.01) {
shadow = 0.5;
float shadow = 1.0;
if (isShadowEnabled) {
float bias = 0.0001;
float shadowBias = -0.000;
vec4 shadowMapUV = shadowMapCoords;
shadowMapUV.z -= shadowBias;
vec4 shadowMapCoordsOverW = shadowMapUV / shadowMapUV.w ;
float distanceInShadowMap = texture(shadowMapSampler, shadowMapCoordsOverW.xy).r + bias;
if (shadowMapCoords.w > 0) {
shadow = distanceInShadowMap < shadowMapCoordsOverW.z ? 0.5 : 1.0;
}
}
// Compute the final color
color = vec4(ambient + shadow * vertexColor.rgb, 1.0);
color = vec4(ambient + shadow * diffuse, 1.0);
}

81
testbed/src/SceneDemo.cpp
View File

@ -29,13 +29,18 @@
using namespace openglframework;
int SceneDemo::shadowMapTextureLevel = 0;
// Constructor
SceneDemo::SceneDemo(const std::string& name, float sceneRadius) : Scene(name), mLight0(0),
SceneDemo::SceneDemo(const std::string& name, float sceneRadius) : Scene(name),
mLight0(0), mIsShadowMappingEnabled(true), mIsShadowMappingInitialized(false),
mDepthShader("shaders/depth.vert", "shaders/depth.frag"),
mPhongShader("shaders/phong.vert", "shaders/phong.frag"),
mQuadShader("shaders/quad.vert", "shaders/quad.frag"),
mVBOQuad(GL_ARRAY_BUFFER) {
shadowMapTextureLevel++;
// Move the light0
mLight0.translateWorld(Vector3(0, 40, 40));
@ -47,14 +52,15 @@ SceneDemo::SceneDemo(const std::string& name, float sceneRadius) : Scene(name),
mShadowMapLightCamera.setSceneRadius(100);
//mShadowMapLightCamera.setZoom(1.0);
mShadowMapBiasMatrix.setAllValues(0.5, 0.0, 0.0, 0.5,
0.0, 0.5, 0.0, 0.5,
0.0, 0.0, 0.5, 0.5,
0.0, 0.0, 0.0, 1.0);
// Create the Shadow map FBO and texture
createShadowMapFBOAndTexture();
if (mIsShadowMappingEnabled) {
createShadowMapFBOAndTexture();
}
createQuadVBO();
}
@ -71,49 +77,50 @@ SceneDemo::~SceneDemo() {
// Render the scene (in multiple passes for shadow mapping)
void SceneDemo::render() {
const Color& diffCol = mLight0.getDiffuseColor();
const Color& specCol = mLight0.getSpecularColor();
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
// ---------- Render the scene to generate the shadow map (first pass) ----------- //
//glEnable(GL_POLYGON_OFFSET_FILL);
//glPolygonOffset(8.0, 4.0);
// Culling switching, rendering only backface, this is done to avoid self-shadowing
glCullFace(GL_BACK);
Matrix4 shadowMapProjMatrix = mShadowMapLightCamera.getProjectionMatrix();
// Get the world-space to camera-space matrix
const Matrix4 shadowMapProjMatrix = mShadowMapLightCamera.getProjectionMatrix();
const openglframework::Matrix4 worldToLightCameraMatrix = mShadowMapLightCamera.getTransformMatrix().getInverse();
mFBOShadowMap.bind();
// If Shadow Mapping is enabled
if (mIsShadowMappingEnabled) {
// Bind the shader
mDepthShader.bind();
// Culling switching, rendering only backface, this is done to avoid self-shadowing
glCullFace(GL_BACK);
// Set the variables of the shader
mDepthShader.setMatrix4x4Uniform("projectionMatrix", shadowMapProjMatrix);
mFBOShadowMap.bind();
// Set the viewport to render into the shadow map texture
glViewport(0, 0, SHADOWMAP_WIDTH, SHADOWMAP_HEIGHT);
// Bind the shader
mDepthShader.bind();
// Clear previous frame values
glClear( GL_DEPTH_BUFFER_BIT);
// Set the variables of the shader
mDepthShader.setMatrix4x4Uniform("projectionMatrix", shadowMapProjMatrix);
// Disable color rendering, we only want to write to the Z-Buffer
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
// Set the viewport to render into the shadow map texture
glViewport(0, 0, SHADOWMAP_WIDTH, SHADOWMAP_HEIGHT);
// Render the objects of the scene
renderSinglePass(mDepthShader, worldToLightCameraMatrix);
// Clear previous frame values
glClear(GL_DEPTH_BUFFER_BIT);
// Unbind the shader
mDepthShader.unbind();
// Disable color rendering, we only want to write to the Z-Buffer
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
mFBOShadowMap.unbind();
// Render the objects of the scene
renderSinglePass(mDepthShader, worldToLightCameraMatrix);
glDisable(GL_POLYGON_OFFSET_FILL);
// Unbind the shader
mDepthShader.unbind();
mFBOShadowMap.unbind();
glDisable(GL_POLYGON_OFFSET_FILL);
}
// ---------- Render the scene for final rendering (second pass) ----------- //
@ -124,20 +131,20 @@ void SceneDemo::render() {
mPhongShader.bind();
mShadowMapTexture.bind();
if (mIsShadowMappingEnabled) mShadowMapTexture.bind();
const GLuint textureUnit = 0;
// Set the variables of the shader
mPhongShader.setMatrix4x4Uniform("projectionMatrix", mCamera.getProjectionMatrix());
mPhongShader.setMatrix4x4Uniform("shadowMapProjectionMatrix", mShadowMapBiasMatrix * shadowMapProjMatrix);
mPhongShader.setMatrix4x4Uniform("worldToLight0CameraMatrix", worldToLightCameraMatrix);
mPhongShader.setVector3Uniform("light0PosCameraSpace", worldToCameraMatrix * mLight0.getOrigin());
mPhongShader.setVector3Uniform("lightAmbientColor", Vector3(0.3f, 0.3f, 0.3f));
const Color& diffCol = mLight0.getDiffuseColor();
const Color& specCol = mLight0.getSpecularColor();
mPhongShader.setVector3Uniform("lightAmbientColor", Vector3(0.4f, 0.4f, 0.4f));
mPhongShader.setVector3Uniform("light0DiffuseColor", Vector3(diffCol.r, diffCol.g, diffCol.b));
mPhongShader.setVector3Uniform("light0SpecularColor", Vector3(specCol.r, specCol.g, specCol.b));
mPhongShader.setFloatUniform("shininess", 60.0f);
mPhongShader.setIntUniform("shadowMapSampler", mShadowMapTexture.getID());
mPhongShader.setIntUniform("shadowMapSampler", textureUnit);
mPhongShader.setIntUniform("isShadowEnabled", mIsShadowMappingEnabled);
// Set the viewport to render the scene
glViewport(mViewportX, mViewportY, mViewportWidth, mViewportHeight);
@ -151,7 +158,7 @@ void SceneDemo::render() {
// Render the objects of the scene
renderSinglePass(mPhongShader, worldToCameraMatrix);
mShadowMapTexture.unbind();
if (mIsShadowMappingEnabled) mShadowMapTexture.unbind();
mPhongShader.unbind();
//drawTextureQuad();
@ -163,7 +170,6 @@ void SceneDemo::createShadowMapFBOAndTexture() {
// Create the texture for the depth values
mShadowMapTexture.create(SHADOWMAP_WIDTH, SHADOWMAP_HEIGHT, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT,
GL_UNSIGNED_BYTE, GL_NEAREST, GL_NEAREST, GL_CLAMP, GL_CLAMP, NULL);
mShadowMapTexture.setLayer(1);
// Create the FBO for the shadow map
mFBOShadowMap.create(0, 0, false);
@ -175,6 +181,8 @@ void SceneDemo::createShadowMapFBOAndTexture() {
mFBOShadowMap.attachTexture(GL_DEPTH_ATTACHMENT_EXT, mShadowMapTexture.getID());
mFBOShadowMap.unbind();
mIsShadowMappingInitialized = true;
}
// TODO : Delete this
@ -200,7 +208,6 @@ void SceneDemo::createQuadVBO() {
mVAOQuad.unbind();
}
// TODO : Delete this
void SceneDemo::drawTextureQuad() {
glViewport(mViewportX, mViewportY, mViewportWidth, mViewportHeight);

28
testbed/src/SceneDemo.h
View File

@ -45,12 +45,20 @@ class SceneDemo : public Scene {
/// Light 0
openglframework::Light mLight0;
/// True if the shadow mapping is enabled
bool mIsShadowMappingEnabled;
/// True if the shadows FBO, textures have been created
bool mIsShadowMappingInitialized;
/// FBO for the shadow map
openglframework::FrameBufferObject mFBOShadowMap;
/// Shadow map texture
openglframework::Texture2D mShadowMapTexture;
static int shadowMapTextureLevel;
/// Shadow map bias matrix
openglframework::Matrix4 mShadowMapBiasMatrix;
@ -99,8 +107,28 @@ class SceneDemo : public Scene {
/// Render the scene in a single pass
virtual void renderSinglePass(openglframework::Shader& shader,
const openglframework::Matrix4& worldToCameraMatrix)=0;
/// Return true if the shadow mapping is enabled
bool getIsShadowMappingEnabled() const;
/// Enabled/Disable the shadow mapping
void setIsShadowMappingEnabled(bool isShadowMappingEnabled);
};
// Return true if the shadow mapping is enabled
inline bool SceneDemo::getIsShadowMappingEnabled() const {
return mIsShadowMappingEnabled;
}
// Enabled/Disable the shadow mapping
inline void SceneDemo::setIsShadowMappingEnabled(bool isShadowMappingEnabled) {
mIsShadowMappingEnabled = isShadowMappingEnabled;
if (mIsShadowMappingEnabled && !mIsShadowMappingInitialized) {
createShadowMapFBOAndTexture();
}
}
#endif

4
testbed/src/TestbedApplication.cpp
View File

@ -276,10 +276,6 @@ void TestbedApplication::reshape() {
// Resize the camera viewport
mCurrentScene->reshape(width - LEFT_PANE_WIDTH, height - HEADER_HEIGHT);
// Resize the OpenGL viewport
//glViewport(LEFT_PANE_WIDTH, HEADER_HEIGHT,
// width - LEFT_PANE_WIDTH, height - HEADER_HEIGHT);
// Update the window size of the scene
int windowWidth, windowHeight;
glfwGetWindowSize(mWindow, &windowWidth, &windowHeight);