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3d renderer

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This commit is contained in:
Erris
2026-03-01 17:06:15 +01:00
parent abe8016f84
commit 90a6ea00c0
21 changed files with 365 additions and 76 deletions
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1
open_engine/include/open_engine.hpp
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@@ -25,6 +25,7 @@
#include "open_engine/renderer/subtexture2d.hpp"
#include "open_engine/renderer/framebuffer.hpp"
#include "open_engine/renderer/renderer2d.hpp"
#include "open_engine/renderer/renderer3d.hpp"
#include "open_engine/renderer/renderer.hpp"
#include "open_engine/renderer/texture.hpp"
#include "open_engine/renderer/buffer.hpp"

3
open_engine/include/open_engine/opengl/opengl_buffer.hpp
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@@ -29,13 +29,14 @@ namespace OpenEngine {
class OpenGLIndexBuffer : public IndexBuffer
{
public:
OpenGLIndexBuffer(uint32_t* indices, uint32_t count);
OpenGLIndexBuffer(const uint32_t* indices, uint32_t count);
virtual ~OpenGLIndexBuffer();
virtual void Bind() const override;
virtual void UnBind() const override;
virtual uint32_t GetCount() const override { return count; };
virtual uint32_t GetID() const override { return id; };
private:
unsigned int id;

5
open_engine/include/open_engine/renderer/buffer.hpp
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@@ -1,6 +1,8 @@
#ifndef BUFFER_HPP
#define BUFFER_HPP
#include "open_engine/ref_scope.hpp"
#include <cstdint>
#include <vector>
#include <string>
@@ -82,8 +84,9 @@ namespace OpenEngine {
virtual void UnBind() const = 0;
virtual uint32_t GetCount() const = 0;
virtual uint32_t GetID() const = 0;
static Ref<IndexBuffer> Create(uint32_t* indices, uint32_t count);
static Ref<IndexBuffer> Create(const uint32_t* indices, uint32_t count);
};
}

61
open_engine/include/open_engine/renderer/renderer3d.hpp Normal file
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@@ -0,0 +1,61 @@
#ifndef RENDERER3D_HPP
#define RENDERER3D_HPP
#include "open_engine/renderer/editor_camera.hpp"
#include "open_engine/renderer/vertex_array.hpp"
#include "open_engine/renderer/camera.hpp"
#include "open_engine/renderer/buffer.hpp"
#include <cstdint>
namespace OpenEngine {
// SHOULD BE MOVED ==================================
struct MeshVertex
{
glm::vec3 position;
glm::vec4 color;
glm::vec3 normal;
glm::vec2 text_coords;
uint32_t id = -1;
};
struct Mesh
{
Ref<VertexArray> vertex_array;
Ref<VertexBuffer> vertex_buffer;
Ref<IndexBuffer> index_buffer;
// TODO: Make them a ptr or something
std::vector<MeshVertex> vertices;
std::vector<uint32_t> indices;
};
Ref<Mesh> CreateMesh(const std::vector<MeshVertex>& vertices,
const std::vector<uint32_t>& indices);
Ref<Mesh> CreateCube(uint32_t id = -1);
// ==================================================
class Renderer3D
{
public:
static void Init();
static void Shutdown();
static void BeginScene(const Camera& camera, const glm::mat4& transform);
static void BeginScene(const EditorCamera& camera);
static void EndScene();
static void DrawMesh(const Ref<Mesh>& mesh, const glm::mat4& transform);
/*
static void DrawCube(const glm::mat4& transform, const glm::vec4& color,
int entity_id);
static void DrawCube(const glm::mat4& transform, Ref<Texture2D>,
int entity_id);
static void DrawCube(const glm::mat4& transform, Ref<Texture2D>,
const glm::vec4& color, int entity_id);
*/
};
}
#endif // RENDERER3D_HPP

21
open_engine/include/open_engine/renderer/uniform_buffer.cpp
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@@ -1,21 +0,0 @@
#include <pch.hpp>
#include <renderer/uniform_buffer.hpp>
#include <opengl/opengl_uniform_buffer.hpp>
#include <renderer/renderer.hpp>
namespace OpenEngine {
Ref<UniformBuffer> UniformBuffer::Create(uint32_t size, uint32_t binding)
{
switch (Renderer::GetAPI())
{
case RendererAPI::API::None: OE_CORE_ASSERT(false, "RendererAPI::None is currently not supported!"); return nullptr;
case RendererAPI::API::OpenGL: return CreateRef<OpenGLUniformBuffer>(size, binding);
}
OE_CORE_ASSERT(false, "Unknown RendererAPI!");
return nullptr;
}
}

1
open_engine/include/open_engine/renderer/vertex_array.hpp
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@@ -2,6 +2,7 @@
#define VERTEX_ARRAY_HPP
#include "open_engine/renderer/buffer.hpp"
#include "open_engine/ref_scope.hpp"
#include <vector>

12
open_engine/include/open_engine/scene/components.hpp
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@@ -2,8 +2,10 @@
#define COMPONENTS_HPP
#include "open_engine/scene/native_scriptable_entity.hpp"
#include "open_engine/renderer/renderer3d.hpp"
#include "open_engine/scene/scene_camera.hpp"
#include "open_engine/renderer/texture.hpp"
#include "open_engine/renderer/renderer3d.hpp"
#include <glm/ext/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
@@ -87,6 +89,16 @@ namespace OpenEngine {
}
};
struct MeshComponent
{
Ref<Mesh> mesh;
MeshComponent() = default;
MeshComponent(const MeshComponent&) = default;
MeshComponent(const Ref<Mesh>& mesh)
: mesh(mesh) {}
};
}
#endif // COMPONENTS_HPP

2
open_engine/include/open_engine/scene/entity.hpp
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@@ -19,7 +19,7 @@ namespace OpenEngine {
Entity(const Entity& other) = default;
template<typename T, typename ... Args>
T& AddComponents(Args&&... args)
T& AddComponent(Args&&... args)
{
OE_ASSERT(!HasComponent<T>(), "Entity already has component.");

7
open_engine/src/open_engine/application.cpp
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@@ -4,6 +4,7 @@
#include <core.hpp>
#include <events/application_event.hpp>
#include <renderer/renderer3d.hpp>
#include <renderer/renderer2d.hpp>
#include <input/input_system.hpp>
#include <imgui/imgui_layer.hpp>
@@ -28,7 +29,8 @@ namespace OpenEngine {
{
OE_PROFILE_SCOPE("Initializing Renderers");
Renderer::Init();
Renderer2D::Init();
//Renderer2D::Init();
Renderer3D::Init();
}
imgui_layer = std::make_shared<ImGuiLayer>();
@@ -39,7 +41,8 @@ namespace OpenEngine {
Application::~Application()
{
OpenEngine::Renderer2D::Shutdown();
//OpenEngine::Renderer2D::Shutdown();
Renderer3D::Shutdown();
}
void Application::Run()

4
open_engine/src/open_engine/opengl/opengl_buffer.cpp
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@@ -52,7 +52,7 @@ namespace OpenEngine {
// Index Buffer =====================================================
// ==================================================================
OpenGLIndexBuffer::OpenGLIndexBuffer(uint32_t* indices, uint32_t count)
OpenGLIndexBuffer::OpenGLIndexBuffer(const uint32_t* indices, uint32_t count)
: count(count)
{
OE_PROFILE_FUNCTION();
@@ -68,7 +68,7 @@ namespace OpenEngine {
void OpenGLIndexBuffer::Bind() const
{
glBindBuffer(GL_ARRAY_BUFFER, id);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id);
}
void OpenGLIndexBuffer::UnBind() const
{

3
open_engine/src/open_engine/opengl/opengl_renderer_api.cpp
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@@ -66,6 +66,9 @@ namespace OpenEngine {
{
OE_PROFILE_FUNCTION();
OE_CORE_ASSERT(vertex_array, "VertexArray is null!");
OE_CORE_ASSERT(vertex_array->GetIndexBuffer(), "IndexBuffer is null!");
uint32_t count = index_count? index_count : vertex_array->GetIndexBuffer()->GetCount();
glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, nullptr);
glBindTexture(GL_TEXTURE_2D, 0);

2
open_engine/src/open_engine/renderer/buffer.cpp
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@@ -91,7 +91,7 @@ namespace OpenEngine {
return nullptr;
}
Ref<IndexBuffer> IndexBuffer::Create(uint32_t* indices, uint32_t count)
Ref<IndexBuffer> IndexBuffer::Create(const uint32_t* indices, uint32_t count)
{
OE_PROFILE_FUNCTION();

8
open_engine/src/open_engine/renderer/renderer2d.cpp
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@@ -1,7 +1,7 @@
#include "renderer/editor_camera.hpp"
#include "renderer/uniform_buffer.hpp"
#include <pch.hpp>
#include "renderer/editor_camera.hpp"
#include "renderer/uniform_buffer.hpp"
#include <renderer/render_command.hpp>
#include <renderer/vertex_array.hpp>
#include <renderer/renderer2d.hpp>
@@ -121,6 +121,8 @@ namespace OpenEngine {
void Renderer2D::Shutdown()
{
OE_PROFILE_FUNCTION();
renderer_data.white_texture.reset();
renderer_data.vertex_array.reset();
renderer_data.vertex_buffer.reset();
@@ -130,8 +132,6 @@ namespace OpenEngine {
for (uint32_t i = 0; i < renderer_data.texture_slot_index; i++)
renderer_data.texture_slots[i].reset();
OE_PROFILE_FUNCTION();
}
void Renderer2D::BeginScene(const OrthographicCamera& camera)

185
open_engine/src/open_engine/renderer/renderer3d.cpp Normal file
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@@ -0,0 +1,185 @@
#include "logging.hpp"
#include <pch.hpp>
#include <renderer/render_command.hpp>
#include <renderer/uniform_buffer.hpp>
#include <renderer/editor_camera.hpp>
#include <renderer/vertex_array.hpp>
#include <renderer/renderer3d.hpp>
#include <renderer/shader.hpp>
#include <renderer/buffer.hpp>
#include <instrumentor.hpp>
#include <ref_scope.hpp>
#include <glm/ext/quaternion_common.hpp>
#include <glm/ext/matrix_transform.hpp>
#include <glm/trigonometric.hpp>
#include <glm/fwd.hpp>
#include <cstdint>
#include <glad/glad.h>
namespace OpenEngine {
// SHOULD BE MOVED ==================================
Ref<Mesh> CreateMesh(const std::vector<MeshVertex>& vertices,
const std::vector<uint32_t>& indices)
{
Ref<Mesh> mesh = CreateRef<Mesh>();
mesh->vertices = vertices;
mesh->indices = indices;
mesh->index_buffer = IndexBuffer::Create(indices.data(), indices.size());
mesh->vertex_array = VertexArray::Create();
mesh->vertex_buffer = VertexBuffer::Create(vertices.size() * sizeof(MeshVertex));
mesh->vertex_buffer->SetData(vertices.data(), vertices.size() * sizeof(MeshVertex));
BufferLayout layout = {
{ ShaderDataType::Float3, "a_Position" },
{ ShaderDataType::Float4, "a_Color" },
{ ShaderDataType::Float3, "a_Normal" },
{ ShaderDataType::Float2, "a_TexCoord" },
{ ShaderDataType::Int, "a_EntityID"}
};
mesh->vertex_buffer->SetLayout(layout);
mesh->vertex_array->AddVertexBuffer(mesh->vertex_buffer);
mesh->vertex_array->SetIndexBuffer(mesh->index_buffer);
return mesh;
}
Ref<Mesh> CreateCube(uint32_t id)
{
OE_CORE_DEBUG("Creating cube with id {}.", id);
std::vector<MeshVertex> vertices = {
// Back face (normal 0, 0, -1)
{{-0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,-1}, {0,0}, id},
{{-0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,-1}, {0,1}, id},
{{ 0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,-1}, {1,1}, id},
{{ 0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,-1}, {1,0}, id},
// Front face (normal 0, 0, 1)
{{-0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,1}, {0,0}, id},
{{-0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,1}, {0,1}, id},
{{ 0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,1}, {1,1}, id},
{{ 0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,0,1}, {1,0}, id},
// Left face (normal -1, 0, 0)
{{-0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {-1,0,0}, {0,0}, id},
{{-0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {-1,0,0}, {0,1}, id},
{{-0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {-1,0,0}, {1,1}, id},
{{-0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {-1,0,0}, {1,0}, id},
// Right face (normal 1, 0, 0)
{{ 0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {1,0,0}, {0,0}, id},
{{ 0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {1,0,0}, {0,1}, id},
{{ 0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {1,0,0}, {1,1}, id},
{{ 0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {1,0,0}, {1,0}, id},
// Top face (normal 0, 1, 0)
{{-0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,1,0}, {0,0}, id},
{{-0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,1,0}, {0,1}, id},
{{ 0.5f, 0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,1,0}, {1,1}, id},
{{ 0.5f, 0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,1,0}, {1,0}, id},
// Bottom face (normal 0, -1, 0)
{{-0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,-1,0}, {0,0}, id},
{{-0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,-1,0}, {0,1}, id},
{{ 0.5f, -0.5f, 0.5f}, {0.5f,0.5f,0.5f,1}, {0,-1,0}, {1,1}, id},
{{ 0.5f, -0.5f, -0.5f}, {0.5f,0.5f,0.5f,1}, {0,-1,0}, {1,0}, id},
};
std::vector<uint32_t> indices = {
0, 1, 2, 0, 2, 3, // back
4, 6, 5, 4, 7, 6, // front
8, 9, 10, 8, 10, 11, // left
12, 14, 13, 12, 15, 14, // right
16, 17, 18, 16, 18, 19, // top
20, 23, 22, 20, 22, 21, // bottom
};
return CreateMesh(vertices, indices);
}
// ==================================================
struct Renderer3DData
{
Ref<Shader> color_shader_3d;
struct CameraData
{
glm::mat4 view_projection;
};
CameraData camera_buffer;
Ref<UniformBuffer> camera_uniform_buffer;
struct TransformData
{
glm::mat4 transform;
};
TransformData transform_buffer;
Ref<UniformBuffer> transform_uniform_buffer;
};
static Renderer3DData renderer_data;
void Renderer3D::Init()
{
OE_PROFILE_FUNCTION();
renderer_data.color_shader_3d = Shader::Create("assets/shaders/color3d.glsl");
renderer_data.camera_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::CameraData), 0);
renderer_data.transform_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::TransformData), 1);
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
glDebugMessageCallback([](GLenum source, GLenum type, GLuint id, GLenum severity,
GLsizei length, const GLchar* message, const void* userParam) {
OE_CORE_ERROR("GL: {0}", message);
}, nullptr);
}
void Renderer3D::Shutdown()
{
renderer_data.camera_uniform_buffer.reset();
renderer_data.color_shader_3d.reset();
}
void Renderer3D::BeginScene(const Camera& camera, const glm::mat4& transform)
{
OE_PROFILE_FUNCTION();
renderer_data.camera_buffer.view_projection = camera.GetProjection() * glm::inverse(transform);
renderer_data.camera_uniform_buffer->SetData(&renderer_data.camera_buffer, sizeof(Renderer3DData::CameraData));
}
void Renderer3D::BeginScene(const EditorCamera& camera)
{
OE_PROFILE_FUNCTION();
renderer_data.camera_buffer.view_projection = camera.GetViewProjection();
renderer_data.camera_uniform_buffer->SetData(&renderer_data.camera_buffer, sizeof(Renderer3DData::CameraData));
}
void Renderer3D::EndScene()
{
}
void Renderer3D::DrawMesh(const Ref<Mesh>& mesh, const glm::mat4& transform)
{
OE_PROFILE_FUNCTION();
renderer_data.color_shader_3d->Bind();
renderer_data.transform_buffer.transform = transform;
renderer_data.transform_uniform_buffer->SetData(&renderer_data.transform_buffer, sizeof(Renderer3DData::TransformData));
mesh->vertex_array->Bind();
RenderCommand::DrawIndexed(mesh->vertex_array, mesh->indices.size());
}
}

34
open_engine/src/open_engine/scene/scene.cpp
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@@ -1,16 +1,18 @@
#include <cstdint>
#include <pch.hpp>
#include <renderer/renderer2d.hpp>
#include <renderer/renderer3d.hpp>
#include <scene/components.hpp>
#include <scene/entity.hpp>
#include <scene/scene.hpp>
namespace OpenEngine {
Entity Scene::CreateEntity(const std::string& name)
{
Entity entity = { registry.create(), this };
auto& tag = entity.AddComponents<TagComponent>();
auto& tag = entity.AddComponent<TagComponent>();
tag.tag = name.empty() ? "Entity" : name;
return entity;
@@ -52,6 +54,7 @@ namespace OpenEngine {
}
}
/*
if (main_camera) {
Renderer2D::BeginScene(main_camera->GetProjection(), main_transform);
@@ -70,27 +73,23 @@ namespace OpenEngine {
Renderer2D::EndScene();
}
*/
}
}
void Scene::OnUpdateEditor(EditorCamera& camera)
{
Renderer2D::BeginScene(camera);
Renderer3D::BeginScene(camera);
auto group = registry.group<TransformComponent>(entt::get<SpriteRendererComponent>);
for (auto entity : group)
{
auto [transform, sprite] = group.get<TransformComponent, SpriteRendererComponent>(entity);
auto view = registry.view<TransformComponent, MeshComponent>();
if (sprite.texture)
Renderer2D::DrawQuad(GetTransformFromComp(transform),
sprite.texture, sprite.color, (int)entity, sprite.tiling_factor);
else
Renderer2D::DrawQuad(GetTransformFromComp(transform),
sprite.color, (int)entity);
}
for (const auto& entity : view) {
auto [transform, mesh] = view.get<TransformComponent, MeshComponent>(entity);
Renderer2D::EndScene();
Renderer3D::DrawMesh(mesh.mesh, GetTransformFromComp(transform));
}
Renderer3D::EndScene();
}
void Scene::OnViewportResize(uint32_t width, uint32_t height)
@@ -151,4 +150,9 @@ namespace OpenEngine {
void Scene::OnComponentAdded<NativeScriptComponent>(Entity entity, NativeScriptComponent& component)
{
}
template<>
void Scene::OnComponentAdded<MeshComponent>(Entity entity, MeshComponent& component)
{
}
}

6
open_engine/src/open_engine/scene/scene_serializer.cpp
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@@ -209,7 +209,7 @@ namespace OpenEngine {
auto transformComponent = entity["TransformComponent"];
if (transformComponent)
{
auto& tc = deserializedEntity.AddComponents<TransformComponent>();
auto& tc = deserializedEntity.AddComponent<TransformComponent>();
tc.translation = transformComponent["Translation"].as<glm::vec3>();
tc.rotation = transformComponent["Rotation"].as<glm::vec3>();
tc.scale = transformComponent["Scale"].as<glm::vec3>();
@@ -218,7 +218,7 @@ namespace OpenEngine {
auto cameraComponent = entity["CameraComponent"];
if (cameraComponent)
{
auto& cc = deserializedEntity.AddComponents<CameraComponent>();
auto& cc = deserializedEntity.AddComponent<CameraComponent>();
auto camera_props = cameraComponent["Camera"];
cc.camera.SetProjectionType((SceneCamera::ProjectionType)camera_props["ProjectionType"].as<int>());
@@ -238,7 +238,7 @@ namespace OpenEngine {
auto spriteRendererComponent = entity["SpriteRendererComponent"];
if (spriteRendererComponent)
{
auto& src = deserializedEntity.AddComponents<SpriteRendererComponent>();
auto& src = deserializedEntity.AddComponent<SpriteRendererComponent>();
src.color = spriteRendererComponent["Color"].as<glm::vec4>();
}
}