bool
SceneShading::setup()
{
if (!Scene::setup())
return false;
static const LibMatrix::vec4 lightPosition(20.0f, 20.0f, 10.0f, 1.0f);
static const LibMatrix::vec4 materialDiffuse(0.0f, 0.0f, 1.0f, 1.0f);
// Calculate half vector for blinn-phong shading model
LibMatrix::vec3 halfVector(lightPosition[0], lightPosition[1], lightPosition[2]);
halfVector.normalize();
halfVector += LibMatrix::vec3(0.0, 0.0, 1.0);
halfVector.normalize();
// Load and add constants to shaders
std::string vtx_shader_filename;
std::string frg_shader_filename;
const std::string &shading = options_["shading"].value;
ShaderSource vtx_source;
ShaderSource frg_source;
if (shading == "gouraud") {
vtx_shader_filename = GLMARK_DATA_PATH"/shaders/light-basic.vert";
frg_shader_filename = GLMARK_DATA_PATH"/shaders/light-basic.frag";
frg_source.append_file(frg_shader_filename);
vtx_source.append_file(vtx_shader_filename);
vtx_source.add_const("LightSourcePosition", lightPosition);
vtx_source.add_const("MaterialDiffuse", materialDiffuse);
}
else if (shading == "blinn-phong-inf") {
vtx_shader_filename = GLMARK_DATA_PATH"/shaders/light-advanced.vert";
frg_shader_filename = GLMARK_DATA_PATH"/shaders/light-advanced.frag";
frg_source.append_file(frg_shader_filename);
frg_source.add_const("LightSourcePosition", lightPosition);
frg_source.add_const("LightSourceHalfVector", halfVector);
vtx_source.append_file(vtx_shader_filename);
}
else if (shading == "phong") {
vtx_shader_filename = GLMARK_DATA_PATH"/shaders/light-phong.vert";
frg_shader_filename = GLMARK_DATA_PATH"/shaders/light-phong.frag";
unsigned int num_lights = Util::fromString<unsigned int>(options_["num-lights"].value);
string fragsource = get_fragment_shader_source(frg_shader_filename, num_lights);
frg_source.append(fragsource);
frg_source.add_const("MaterialDiffuse", materialDiffuse);
vtx_source.append_file(vtx_shader_filename);
}
if (!Scene::load_shaders_from_strings(program_, vtx_source.str(),
frg_source.str()))
{
return false;
}
Model model;
const std::string& whichModel(options_["model"].value);
bool modelLoaded = model.load(whichModel);
if(!modelLoaded)
return false;
// Now that we're successfully loaded, there are a few quirks about
// some of the known models that we need to account for. The draw
// logic for the scene wants to rotate the model around the Y axis.
// Most of our models are described this way. Some need adjustment
// (an additional rotation that gets the model into the correct
// orientation).
//
// Here's a summary:
//
// Angel rotates around the Y axis
// Armadillo rotates around the Y axis
// Buddha rotates around the X axis
// Bunny rotates around the Y axis
// Dragon rotates around the X axis
// Horse rotates around the Y axis
if (whichModel == "buddha" || whichModel == "dragon")
{
orientModel_ = true;
orientationAngle_ = -90.0;
orientationVec_ = vec3(1.0, 0.0, 0.0);
}
else if (whichModel == "armadillo")
{
orientModel_ = true;
orientationAngle_ = 180.0;
orientationVec_ = vec3(0.0, 1.0, 0.0);
}
if (model.needNormals())
model.calculate_normals();
/* Tell the converter that we only care about position and normal attributes */
std::vector<std::pair<Model::AttribType, int> > attribs;
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypePosition, 3));
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypeNormal, 3));
model.convert_to_mesh(mesh_, attribs);
mesh_.build_vbo();
/* Calculate a projection matrix that is a good fit for the model */
vec3 maxVec = model.maxVec();
vec3 minVec = model.minVec();
vec3 diffVec = maxVec - minVec;
centerVec_ = maxVec + minVec;
centerVec_ /= 2.0;
float diameter = diffVec.length();
radius_ = diameter / 2;
float fovy = 2.0 * atanf(radius_ / (2.0 + radius_));
fovy /= M_PI;
fovy *= 180.0;
float aspect(static_cast<float>(canvas_.width())/static_cast<float>(canvas_.height()));
perspective_.setIdentity();
perspective_ *= LibMatrix::Mat4::perspective(fovy, aspect, 2.0, 2.0 + diameter);
program_.start();
std::vector<GLint> attrib_locations;
attrib_locations.push_back(program_["position"].location());
attrib_locations.push_back(program_["normal"].location());
mesh_.set_attrib_locations(attrib_locations);
currentFrame_ = 0;
rotation_ = 0.0f;
running_ = true;
startTime_ = Util::get_timestamp_us() / 1000000.0;
lastUpdateTime_ = startTime_;
return true;
}
bool
RefractPrivate::setup(map<string, Scene::Option>& options)
{
// Program object setup
static const string vtx_shader_filename(GLMARK_DATA_PATH"/shaders/light-refract.vert");
static const string frg_shader_filename(GLMARK_DATA_PATH"/shaders/light-refract.frag");
static const vec4 lightColor(0.4, 0.4, 0.4, 1.0);
ShaderSource vtx_source(vtx_shader_filename);
ShaderSource frg_source(frg_shader_filename);
frg_source.add_const("LightColor", lightColor);
frg_source.add_const("LightSourcePosition", lightPosition);
float refractive_index(Util::fromString<float>(options["index"].value));
frg_source.add_const("RefractiveIndex", refractive_index);
if (!Scene::load_shaders_from_strings(program_, vtx_source.str(), frg_source.str())) {
return false;
}
const string& whichTexture(options["texture"].value);
if (!Texture::load(whichTexture, &texture_, GL_LINEAR, GL_LINEAR, 0))
return false;
// Model setup
Model model;
const string& whichModel(options["model"].value);
bool modelLoaded = model.load(whichModel);
if(!modelLoaded)
return false;
// Now that we're successfully loaded, there are a few quirks about
// some of the known models that we need to account for. The draw
// logic for the scene wants to rotate the model around the Y axis.
// Most of our models are described this way. Some need adjustment
// (an additional rotation that gets the model into the correct
// orientation).
//
// Here's a summary:
//
// Angel rotates around the Y axis
// Armadillo rotates around the Y axis
// Buddha rotates around the X axis
// Bunny rotates around the Y axis
// Dragon rotates around the X axis
// Horse rotates around the Y axis
if (whichModel == "buddha" || whichModel == "dragon")
{
orientModel_ = true;
orientationAngle_ = -90.0;
orientationVec_ = vec3(1.0, 0.0, 0.0);
}
else if (whichModel == "armadillo")
{
orientModel_ = true;
orientationAngle_ = 180.0;
orientationVec_ = vec3(0.0, 1.0, 0.0);
}
if (model.needNormals())
model.calculate_normals();
// Mesh setup
vector<std::pair<Model::AttribType, int> > attribs;
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypePosition, 3));
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypeNormal, 3));
model.convert_to_mesh(mesh_, attribs);
useVbo_ = (options["use-vbo"].value == "true");
bool interleave = (options["interleave"].value == "true");
mesh_.vbo_update_method(Mesh::VBOUpdateMethodMap);
mesh_.interleave(interleave);
if (useVbo_) {
mesh_.build_vbo();
}
else {
mesh_.build_array();
}
// Calculate a projection matrix that is a good fit for the model
vec3 maxVec = model.maxVec();
vec3 minVec = model.minVec();
vec3 diffVec = maxVec - minVec;
centerVec_ = maxVec + minVec;
centerVec_ /= 2.0;
float diameter = diffVec.length();
radius_ = diameter / 2;
float fovy = 2.0 * atanf(radius_ / (2.0 + radius_));
fovy /= M_PI;
fovy *= 180.0;
float aspect(static_cast<float>(canvas_.width())/static_cast<float>(canvas_.height()));
projection_.perspective(fovy, aspect, 2.0, 2.0 + diameter);
// Set up the light matrix with a bias that will convert values
// in the range of [-1, 1] to [0, 1)], then add in the projection
// and the "look at" matrix from the light position.
light_ *= LibMatrix::Mat4::translate(0.5, 0.5, 0.5);
light_ *= LibMatrix::Mat4::scale(0.5, 0.5, 0.5);
light_ *= projection_.getCurrent();
light_ *= LibMatrix::Mat4::lookAt(lightPosition.x(), lightPosition.y(), lightPosition.z(),
0.0, 0.0, 0.0,
0.0, 1.0, 0.0);
if (!depthTarget_.setup(canvas_.width(), canvas_.height())) {
Log::error("Failed to set up the render target for the depth pass\n");
return false;
}
return true;
}
void
SceneBuild::setup()
{
using LibMatrix::vec3;
Scene::setup();
/* Set up shaders */
static const std::string vtx_shader_filename(GLMARK_DATA_PATH"/shaders/light-basic.vert");
static const std::string frg_shader_filename(GLMARK_DATA_PATH"/shaders/light-basic.frag");
static const LibMatrix::vec4 lightPosition(20.0f, 20.0f, 10.0f, 1.0f);
static const LibMatrix::vec4 materialDiffuse(1.0f, 1.0f, 1.0f, 1.0f);
ShaderSource vtx_source(vtx_shader_filename);
ShaderSource frg_source(frg_shader_filename);
vtx_source.add_const("LightSourcePosition", lightPosition);
vtx_source.add_const("MaterialDiffuse", materialDiffuse);
if (!Scene::load_shaders_from_strings(program_, vtx_source.str(),
frg_source.str()))
{
return;
}
Model model;
const std::string& whichModel(options_["model"].value);
bool modelLoaded = model.load(whichModel);
if(!modelLoaded)
return;
// Now that we're successfully loaded, there are a few quirks about
// some of the known models that we need to account for. The draw
// logic for the scene wants to rotate the model around the Y axis.
// Most of our models are described this way. Some need adjustment
// (an additional rotation that gets the model into the correct
// orientation).
//
// Here's a summary:
//
// Angel rotates around the Y axis
// Armadillo rotates around the Y axis
// Buddha rotates around the X axis
// Bunny rotates around the Y axis
// Dragon rotates around the X axis
// Horse rotates around the Y axis
if (whichModel == "buddha" || whichModel == "dragon")
{
orientModel_ = true;
orientationAngle_ = -90.0;
orientationVec_ = vec3(1.0, 0.0, 0.0);
}
model.calculate_normals();
/* Tell the converter that we only care about position and normal attributes */
std::vector<std::pair<Model::AttribType, int> > attribs;
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypePosition, 3));
attribs.push_back(std::pair<Model::AttribType, int>(Model::AttribTypeNormal, 3));
model.convert_to_mesh(mesh_, attribs);
std::vector<GLint> attrib_locations;
attrib_locations.push_back(program_["position"].location());
attrib_locations.push_back(program_["normal"].location());
mesh_.set_attrib_locations(attrib_locations);
useVbo_ = (options_["use-vbo"].value == "true");
bool interleave = (options_["interleave"].value == "true");
mesh_.vbo_update_method(Mesh::VBOUpdateMethodMap);
mesh_.interleave(interleave);
if (useVbo_)
mesh_.build_vbo();
else
mesh_.build_array();
/* Calculate a projection matrix that is a good fit for the model */
vec3 maxVec = model.maxVec();
vec3 minVec = model.minVec();
vec3 diffVec = maxVec - minVec;
centerVec_ = maxVec + minVec;
centerVec_ /= 2.0;
float diameter = diffVec.length();
radius_ = diameter / 2;
float fovy = 2.0 * atanf(radius_ / (2.0 + radius_));
fovy /= M_PI;
fovy *= 180.0;
float aspect(static_cast<float>(canvas_.width())/static_cast<float>(canvas_.height()));
perspective_.setIdentity();
perspective_ *= LibMatrix::Mat4::perspective(fovy, aspect, 2.0, 2.0 + diameter);
program_.start();
currentFrame_ = 0;
rotation_ = 0.0;
running_ = true;
startTime_ = Util::get_timestamp_us() / 1000000.0;
lastUpdateTime_ = startTime_;
}