void Renderer::RenderScene(Scene& scene)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Camera &cam = scene.GetCamera();
// view matrix
Mat4 view_matrix = glm::lookAt(cam.position, cam.point, cam.up);
// gather info
std::vector<DirectionalLightComponent*> directional_lights;
std::vector<PointLightComponent*> point_lights;
std::map<Shader*, std::vector<VisibleComponent*>> visible_by_shader;
for (auto x : scene.GetVisibleComponents()) {
Shader *shader = x->GetShader();
if (shader != nullptr) {
auto it = visible_by_shader.find(x->GetShader());
if (it == visible_by_shader.end())
it = visible_by_shader.emplace(std::piecewise_construct, std::forward_as_tuple(shader), std::forward_as_tuple()).first;
it->second.push_back(x);
}
}
for (auto x : scene.GetLightComponents()) {
switch (x->GetType()) {
case LightComponentType::Directional:
directional_lights.push_back(static_cast<DirectionalLightComponent*>(x));
break;
case LightComponentType::Point:
point_lights.push_back(static_cast<PointLightComponent*>(x));
break;
default:
break;
}
}
// render
for (auto it = visible_by_shader.begin(); it != visible_by_shader.end(); ++it) {
Shader *shader = it->first;
shader->Enable();
shader->SetupUniforms(view_matrix, projection_, ambient_, directional_lights, point_lights);
for (auto x : it->second) {
Mesh *mesh = x->GetMesh();
if (mesh == nullptr)
continue;
glBindVertexArray(mesh->GetVAO());
const MeshEntries &entries = mesh->GetEntries();
int i = 0;
const Mat4 *generic_model_matrix = x->GetModelMatrix(-1);
Mat4 generic_normal_matrix = glm::inverse(view_matrix * *generic_model_matrix);
Vec4 &blend = x->GetColor();
for (auto it2 = entries.begin(); it2 != entries.end(); ++it2, ++i) {
const Mat4 *model_matrix = x->GetModelMatrix(i);
if (model_matrix != nullptr) {
shader->SetupUniformsForMesh(blend, *model_matrix, glm::inverse(view_matrix * *model_matrix), *mesh, *it2, placeholder_tex_);
} else {
shader->SetupUniformsForMesh(blend, *generic_model_matrix, generic_normal_matrix, *mesh, *it2, placeholder_tex_);
}
glDrawElementsBaseVertex(GL_TRIANGLES, it2->vertex_count, GL_UNSIGNED_INT,
reinterpret_cast<void*>(sizeof(uint) * it2->index_base), it2->vertex_base);
}
}
}
glBindVertexArray(0);
}
int main(int argc, char *argv[])
#endif
{
LOG_DEBUG("Opening window ...");
Window window = Window("Snowflake Sandbox", VideoMode(1280, 768));
Color clearColor = Color(50, 80, 80, 255);
GLfloat vertexBufferData[] =
{
// Front face
-1.0, -1.0, 1.0,
1.0, -1.0, 1.0,
1.0, 1.0, 1.0,
-1.0, 1.0, 1.0,
// Back face
-1.0, -1.0, -1.0,
-1.0, 1.0, -1.0,
1.0, 1.0, -1.0,
1.0, -1.0, -1.0,
// Top face
-1.0, 1.0, -1.0,
-1.0, 1.0, 1.0,
1.0, 1.0, 1.0,
1.0, 1.0, -1.0,
// Bottom face
-1.0, -1.0, -1.0,
1.0, -1.0, -1.0,
1.0, -1.0, 1.0,
-1.0, -1.0, 1.0,
// Right face
1.0, -1.0, -1.0,
1.0, 1.0, -1.0,
1.0, 1.0, 1.0,
1.0, -1.0, 1.0,
// Left face
-1.0, -1.0, -1.0,
-1.0, -1.0, 1.0,
-1.0, 1.0, 1.0,
-1.0, 1.0, -1.0
};
GLfloat colorBufferData[] =
{
0.583f, 0.771f, 0.014f,
0.609f, 0.115f, 0.436f,
0.327f, 0.483f, 0.844f,
0.822f, 0.569f, 0.201f,
0.435f, 0.602f, 0.223f,
0.310f, 0.747f, 0.185f,
0.597f, 0.770f, 0.761f,
0.559f, 0.436f, 0.730f,
0.359f, 0.583f, 0.152f,
0.483f, 0.596f, 0.789f,
0.559f, 0.861f, 0.639f,
0.195f, 0.548f, 0.859f,
0.014f, 0.184f, 0.576f,
0.771f, 0.328f, 0.970f,
0.406f, 0.615f, 0.116f,
0.676f, 0.977f, 0.133f,
0.971f, 0.572f, 0.833f,
0.140f, 0.616f, 0.489f,
0.997f, 0.513f, 0.064f,
0.945f, 0.719f, 0.592f,
0.543f, 0.021f, 0.978f,
0.279f, 0.317f, 0.505f,
0.167f, 0.620f, 0.077f,
0.347f, 0.857f, 0.137f,
0.055f, 0.953f, 0.042f,
0.714f, 0.505f, 0.345f,
0.783f, 0.290f, 0.734f,
0.722f, 0.645f, 0.174f,
0.302f, 0.455f, 0.848f,
0.225f, 0.587f, 0.040f,
0.517f, 0.713f, 0.338f,
0.053f, 0.959f, 0.120f,
0.393f, 0.621f, 0.362f,
0.673f, 0.211f, 0.457f,
0.820f, 0.883f, 0.371f,
0.982f, 0.099f, 0.879f
};
GLushort indicesData[] =
{
0, 1, 2, 0, 2, 3, // front
4, 5, 6, 4, 6, 7, // back
8, 9, 10, 8, 10, 11, // top
12, 13, 14, 12, 14, 15, // bottom
16, 17, 18, 16, 18, 19, // right
20, 21, 22, 20, 22, 23 // left
};
VertexArray cube, cube2;
IndexBuffer ibo(indicesData, std::end(indicesData) - std::begin(indicesData));
cube.AddBuffer(sfnew Buffer(vertexBufferData, sizeof(vertexBufferData), 3), 0);
cube.AddBuffer(sfnew Buffer(colorBufferData, sizeof(colorBufferData), 3), 1);
cube2.AddBuffer(sfnew Buffer(vertexBufferData, sizeof(vertexBufferData), 3), 0);
cube2.AddBuffer(sfnew Buffer(colorBufferData, sizeof(colorBufferData), 3), 1);
Matrix4 projection = Matrix4::Perspective(100.0f, window.GetSize().X / window.GetSize().Y, 0.1f, 100.f);
Matrix4 view = Matrix4::LookAt(Vector3(4, 3, 3), Vector3(0, 0, 0), Vector3(0, 0.8f, 0));
Matrix4 model = Matrix4(1.0f);
Matrix4 mvp = projection * view * model;
Shader shader = Shader("tri_vertex.glsl", "tri_fragment.glsl");
shader.Enable();
while (!window.ShouldClose())
{
window.Clear(clearColor);
// Render here
cube.Bind();
ibo.Bind();
model = Matrix4::Translation(Vector3(0, 0, 0));
mvp = projection * view * model;
shader.SetUniformMat4("MVP", mvp);
glDrawElements(GL_TRIANGLES, ibo.GetCount(), GL_UNSIGNED_SHORT, 0);
ibo.Bind();
cube.Unbind();
cube2.Bind();
ibo.Bind();
model = Matrix4::Translation(Vector3(4, 0, 0));
mvp = projection * view * model;
shader.SetUniformMat4("MVP", mvp);
glDrawElements(GL_TRIANGLES, ibo.GetCount(), GL_UNSIGNED_SHORT, 0);
ibo.Bind();
cube2.Unbind();
window.Display();
window.Update();
}
window.Close();
#if _DEBUG
LOG_DEBUG("PAUSING NOW!");
system("PAUSE");
#endif
return EXIT_SUCCESS;
}
