// Load material for the bunny and shell
static void initMaterials() {
...
// bunny material
g_bunnyMat.reset(new Material("./shaders/basic-gl3.vshader", "./shaders/bunny-gl3.fshader"));
g_bunnyMat->getUniforms()
.put("uColorAmbient", Cvec3f(0.45f, 0.3f, 0.3f))
.put("uColorDiffuse", Cvec3f(0.2f, 0.2f, 0.2f));
// bunny shell materials;
shared_ptr<ImageTexture> shellTexture(new ImageTexture("shell.ppm", false)); // common shell texture
// needs to enable repeating of texture coordinates
shellTexture->bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// eachy layer of the shell uses a different material, though the materials will share the
// same shader files and some common uniforms. hence we create a prototype here, and will
// copy from the prototype later
Material bunnyShellMatPrototype("./shaders/bunny-shell-gl3.vshader", "./shaders/bunny-shell-gl3.fshader");
bunnyShellMatPrototype.getUniforms().put("uTexShell", shellTexture);
bunnyShellMatPrototype.getRenderStates()
.blendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) // set blending mode
.enable(GL_BLEND) // enable blending
.disable(GL_CULL_FACE); // disable culling
// allocate array of materials
g_bunnyShellMats.resize(g_numShells);
for (int i = 0; i < g_numShells; ++i) {
g_bunnyShellMats[i].reset(new Material(bunnyShellMatPrototype)); // copy from the prototype
// but set a different exponent for blending transparency
g_bunnyShellMats[i]->getUniforms().put("uAlphaExponent", 2.f + 5.f * float(i + 1)/g_numShells);
}
};
Ray::Ray() {
origin = Cvec3f(0., 0., 0.);
direction = Cvec3f(0., 0., 0.);
}
