void AddDataToVBO(std::function<GLuint(std::vector<GLfloat>&)> function, oglplus::Buffer& buffer, const std::string& paramName)
{
using namespace oglplus;
std::vector<GLfloat> data;
GLuint n_per_vertex = function(data);
buffer.Bind(BufferTarget::Array);
Buffer::Data(BufferTarget::Array, data);
VertexArrayAttrib vert_attr(program.GetProgram(), paramName.data());
vert_attr.Setup<GLfloat>(n_per_vertex);
vert_attr.Enable();
}
Application() : BaseApplication (900, 300, "Phong + Ward BRDF + Ward BRDF with map : Press space to play/stop. Press 1 or 2 to change object"), program("vertex.vert", "fragmetPhong.frag"),
programBRDF("vertex.vert", "fragmetWardBRDF.frag"), programBRDFMap("vertex.vert", "fragmetWardBRDFMap.frag"), make_torus(0.8, 0.5, 40, 40), make_sphere(1.0, 40.0, 40.0), lightPosition(2.3, 1.3, -7.0, 1.0), rotation(true)
{
using namespace oglplus;
program.Use();
int width = 0;
int height = 0;
GetWidnowSize(width, height);
oglplus::Mat4f projection_matrix = oglplus::CamMatrixf::PerspectiveX(
Degrees(60),
double(width / 3)/height,
1, 10.0
);
oglplus::Mat4f camera_matrix = oglplus::CamMatrixf::LookingAt (oglplus::Vec3f(0.0, 0.0, -2.5), oglplus::Vec3f());
CreateSphere();
CreateTorus();
pGLContext->ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
pGLContext->ClearDepth(1.0f);
pGLContext->Enable(Capability::DepthTest);
oglplus::Vec3f ambient(0.329412, 0.223529, 0.027451);
oglplus::Vec3f diffusion(0.780392, 0.568627, 0.113725);
oglplus::Vec3f specular(0.992157, 0.941176, 0.807843);
oglplus::Mat4f cameraMatrix = camera_matrix;
oglplus::Mat4f sphereModelMatrix;
// Create shapes.
// Phong shading
{
RenderObject sphereObject(sphere, program, shpereIndexes);
sphereObject.Init(PrimitiveType::TriangleStrip, nShpereVertexCount);
SetupCommonParams(sphereObject, ambient,diffusion,specular, cameraMatrix, sphereModelMatrix, projection_matrix, lightPosition);
sphereObject.AddFloatParam("shininess", 25.0);
spheres.push_back(sphereObject);
}
// Ward's BRDF Model: https://en.wikibooks.org/wiki/GLSL_Programming/Unity/Brushed_Metal
{
RenderObject sphereObject(sphere, programBRDF, shpereIndexes);
sphereObject.Init(PrimitiveType::TriangleStrip, nShpereVertexCount);
oglplus::Mat4f modelMatrix;
SetupCommonParams(sphereObject, ambient,diffusion,specular, cameraMatrix, sphereModelMatrix, projection_matrix, lightPosition);
spheres.push_back(sphereObject);
}
// Ward's SBRDF Model + map
{
RenderObject sphereObject(sphere, programBRDFMap, shpereIndexes);
sphereObject.Init(PrimitiveType::TriangleStrip, nShpereVertexCount);
oglplus::Mat4f modelMatrix;
SetupCommonParams(sphereObject, ambient,diffusion,specular, cameraMatrix, sphereModelMatrix, projection_matrix, lightPosition);
spheres.push_back(sphereObject);
}
// Create torus
oglplus::Mat4f torusModelMatrix = oglplus::ModelMatrixf::RotationX(oglplus::Degrees(90));
// Phong shading
{
RenderObject torusObject(torus, program, torusIndexes);
torusObject.Init(PrimitiveType::TriangleStrip, nTorusVertexCount);
SetupCommonParams(torusObject, ambient, diffusion, specular, cameraMatrix, torusModelMatrix, projection_matrix, lightPosition);
torusObject.AddFloatParam("shininess", 25.0);
toruses.push_back(torusObject);
}
// Ward's BRDF Model: https://en.wikibooks.org/wiki/GLSL_Programming/Unity/Brushed_Metal
{
RenderObject torusObject(torus, programBRDF, torusIndexes);
torusObject.Init(PrimitiveType::TriangleStrip, nTorusVertexCount);
SetupCommonParams(torusObject, ambient, diffusion, specular, cameraMatrix, torusModelMatrix, projection_matrix, lightPosition);
toruses.push_back(torusObject);
}
// Ward's SBRDF Model + map
{
RenderObject torusObject(torus, programBRDFMap, torusIndexes);
torusObject.Init(PrimitiveType::TriangleStrip, nTorusVertexCount);
SetupCommonParams(torusObject, ambient, diffusion, specular, cameraMatrix, torusModelMatrix, projection_matrix, lightPosition);
toruses.push_back(torusObject);
}
//Render spheres by default.
activeObjects = &spheres;
LoadBRDFMap(Resource::getResoucesDir() + "LoadBRDFMap.png");
programBRDFMap.Use();
UniformSampler(programBRDFMap.GetProgram(), "MapTexture").Set(0);
prevTime = GetMsFromEpoch();
}