Yoggie-Game-Studio/YoggieEngine
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Code Issues 6 repo.project_board 1 Releases Activity

Incorrectly loading a model, Adding a VertexArray abstraction

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* Using import library assimp to incorrectly load a cube.obj
* Using a temporary Renderable class as a placeholder for all data needed
to render the mesh.
* Vertex Array abstraction added
This commit is contained in:
Nigel Barink
2022-05-04 23:25:18 +02:00
parent eb0e7f7a51
commit 9165e30d0e
19 changed files with 322 additions and 112 deletions
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12
SandboxApplication/Cube.mtl Normal file
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@ -0,0 +1,12 @@
# Blender 3.1.2 MTL File: 'None'
# www.blender.org
newmtl Material
Ns 360.000000
Ka 1.000000 1.000000 1.000000
Kd 0.800000 0.800000 0.800000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.450000
d 1.000000
illum 2

40
SandboxApplication/Cube.obj Normal file
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@ -0,0 +1,40 @@
# Blender 3.1.2
# www.blender.org
mtllib Cube.mtl
o Cube
v 1.000000 1.000000 -1.000000
v 1.000000 -1.000000 -1.000000
v 1.000000 1.000000 1.000000
v 1.000000 -1.000000 1.000000
v -1.000000 1.000000 -1.000000
v -1.000000 -1.000000 -1.000000
v -1.000000 1.000000 1.000000
v -1.000000 -1.000000 1.000000
vn -0.0000 1.0000 -0.0000
vn -0.0000 -0.0000 1.0000
vn -1.0000 -0.0000 -0.0000
vn -0.0000 -1.0000 -0.0000
vn 1.0000 -0.0000 -0.0000
vn -0.0000 -0.0000 -1.0000
vt 0.625000 0.500000
vt 0.375000 0.500000
vt 0.625000 0.750000
vt 0.375000 0.750000
vt 0.875000 0.500000
vt 0.625000 0.250000
vt 0.125000 0.500000
vt 0.375000 0.250000
vt 0.875000 0.750000
vt 0.625000 1.000000
vt 0.625000 0.000000
vt 0.375000 1.000000
vt 0.375000 0.000000
vt 0.125000 0.750000
s 0
usemtl Material
f 1/1/1 5/5/1 7/9/1 3/3/1
f 4/4/2 3/3/2 7/10/2 8/12/2
f 8/13/3 7/11/3 5/6/3 6/8/3
f 6/7/4 2/2/4 4/4/4 8/14/4
f 2/2/5 1/1/5 3/3/5 4/4/5
f 6/8/6 5/6/6 1/1/6 2/2/6

50
SandboxApplication/Renderable.cpp Normal file
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@ -0,0 +1,50 @@
#include "Renderable.h"
Renderable Renderable::Load()
{
return Renderable();
}
Renderable::Renderable()
{
meshes = ModelImporter::Test();
transform.Scale = glm::vec3(1.0f);
transform.Rotation = glm::vec3(0.0f, 90.0f, 0.0f);
transform.Position = glm::vec3(0.0f, 0.0f, -10.0f);
VAO.Create();
VAO.Bind();
vertexBuffer.createBuffer();
vertexBuffer.Bind(false);
vertexBuffer.setBufferData(&meshes[0].vertices[0], meshes[0].vertices.size() * sizeof(glm::vec3), false);
elementBuffer.createBuffer();
elementBuffer.Bind(true);
elementBuffer.setBufferData(&meshes[0].elements[0], meshes[0].elements.size() * sizeof(unsigned int), true);
VAO.AttachAttribute(0, 3, 0);
vertexBuffer.Unbind(false);
VAO.Unbind();
}
Renderable::~Renderable()
{
}
void Renderable::Draw()
{
VAO.Bind();
elementBuffer.Bind(true);
glDrawElements(GL_TRIANGLES, static_cast<unsigned int>(meshes[0].elements.size()), GL_UNSIGNED_SHORT, NULL);
VAO.Unbind();
}

24
SandboxApplication/Renderable.h Normal file
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@ -0,0 +1,24 @@
#pragma once
#include <vector>
#include <spdlog/spdlog.h>
#include <MyGraphicsEngine/Mesh.h>
#include <MyGraphicsEngine/Transform.h>
#include <include/AssetManager/ModelImporter.h>
#include <include/MyGraphicsEngine/Buffer.h>
#include <include/MyGraphicsEngine/VertexArray.h>
class Renderable {
private:
std::vector<BarinkEngine::Mesh> meshes;
Renderable();
public:
Buffer vertexBuffer;
Buffer elementBuffer;
VertexArray VAO;
Transform transform;
~Renderable();
static Renderable Load();
void Draw();
};

128
SandboxApplication/Sandbox.cpp
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@ -1,60 +1,37 @@
#include <string>
#include <MyGraphicsEngine/Shader.h>
#include <MyGraphicsEngine/Window.h>
#include <MyGraphicsEngine/Camera.h>
#include <MyGraphicsEngine/Mesh.h>
#include <MyGraphicsEngine/Transform.h>
#include <MyGraphicsEngine/Buffer.h>
#include <string>
#include <glm/glm.hpp>
#include "imgui.h"
#include "backends/imgui_impl_glfw.h"
#include "backends/imgui_impl_opengl3.h"
#include "Renderable.h"
#include <filesystem>
/*
* extern "C"
extern "C"
{
#include "lauxlib.h"
#include "lua.h"
#include "lualib.h"
}
#include <include/AssetManager/ModelImporter.h>
/*
#include <gorilla/gau.h>
#include <gorilla/ga.h>
*/
int main(int argc, char* argv[]) {
spdlog::info("Working directory: {}", argv[0]);
//ModelImporter::Test();
Transform t;
t.Scale.x = 1.0f;
t.Scale.y = 1.0f;
t.Rotation.y = 90.0f;
Mesh mesh;
mesh.vertices = {
glm::vec3( 0.5f, 0.5f, 0.0f), // top, right
glm::vec3( 0.5f, -0.5f, 0.0f), // bottom right
glm::vec3(-0.5f, -0.5f, 0.0f), // bottom left
glm::vec3(-0.5f, 0.5f, 0.0f) // top left
};
mesh.elements = {
0,1,3,
1,2,3
};
Camera cam(glm::vec3(2.0f, 0.0f, 0.0f), glm::vec3(0.0f,0.0f,0.0f), 90.0f);
char cwd[256];
getcwd(cwd, 256);
spdlog::info("Working directory: {}", cwd);
BarinkWindow GameWindow(800, 600);
@ -66,45 +43,22 @@ int main(int argc, char* argv[]) {
ImGui::StyleColorsDark();
ImGui_ImplGlfw_InitForOpenGL(GameWindow.windowptr(), true);
ImGui_ImplOpenGL3_Init("#version 440");
Camera cam(glm::vec3(0.0f, 1.5f, -10.0f), glm::vec3(0.0f, 0.0f, 0.0f), 90.0f);
Renderable Cube = Renderable::Load();
spdlog::info("==== Load Shader(s) ====");
std::string vertexShaderSource = "build/SandboxApplication/Debug/test.vs";
std::string fragmentShaderSource = "build/SandboxApplication/Debug/test.fs";
Shader shader (vertexShaderSource, fragmentShaderSource);
/*
* lua_State* L = luaL_newstate();
lua_State* L = luaL_newstate();
luaL_openlibs(L);
luaL_dostring(L, "print('BarinkEngine')");
luaL_dofile(L,"./script.lua");
*/
spdlog::info("Vertices: {}, {} bytes", mesh.vertices.size(), sizeof(glm::vec3));
spdlog::info("Elements: {}, {} bytes", mesh.elements.size(), sizeof(GLushort));
Buffer VertexBuffer;
Buffer ElementBuffer;
unsigned int VAO;
glGenVertexArrays(1, &VAO);
glBindVertexArray(VAO);
VertexBuffer.createBuffer();
VertexBuffer.Bind(false);
VertexBuffer.setBufferData(&mesh.vertices[0], mesh.vertices.size() * sizeof(glm::vec3),false);
ElementBuffer.createBuffer();
ElementBuffer.Bind(true);
ElementBuffer.setBufferData(&mesh.elements[0], mesh.elements.size() * sizeof(GLushort), true);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
VertexBuffer.Unbind(false);
glBindVertexArray(0);
spdlog::info("==== Run script ====");
luaL_dofile(L,"build/SandboxApplication/Debug/script.lua");
/*
* gau_Manager* mgr;
@ -122,17 +76,15 @@ int main(int argc, char* argv[]) {
mixer = gau_manager_mixer(mgr);
*/
while (!GameWindow.WindowShouldClose()) {
glm::mat4 tran = glm::translate(glm::mat4(), t.Position);
glm::mat4 scale = glm::scale(glm::mat4(), t.Scale);
glm::mat4 tran = glm::translate(glm::mat4(), Cube.transform.Position);
glm::mat4 scale = glm::scale(glm::mat4(), Cube.transform.Scale);
glm::mat4 rot =
glm::rotate(glm::mat4(), glm::radians(t.Rotation.x), glm::vec3(1.0f, 0.0f, 0.0f)) *
glm::rotate(glm::mat4(), glm::radians(t.Rotation.y), glm::vec3(0.0f, 1.0f, 0.0f)) *
glm::rotate(glm::mat4(), glm::radians(t.Rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
glm::rotate(glm::mat4(), glm::radians(Cube.transform.Rotation.x), glm::vec3(1.0f, 0.0f, 0.0f)) *
glm::rotate(glm::mat4(), glm::radians(Cube.transform.Rotation.y), glm::vec3(0.0f, 1.0f, 0.0f)) *
glm::rotate(glm::mat4(), glm::radians(Cube.transform.Rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
glm::mat4 model = tran * rot * scale;
@ -148,23 +100,23 @@ int main(int argc, char* argv[]) {
shader.setUniformMat4("P", projection);
shader.setUniformMat4("M", model);
shader.setUniformMat4("V", cam.GetViewMatrix());
glBindVertexArray(VAO);
ElementBuffer.Bind(true);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, NULL);
glBindVertexArray(0);
Cube.Draw();
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
ImGui::Begin("Transform Test Tool");
ImGui::Begin("Test");
ImGui::SliderFloat("Scale Y:", (float*)&t.Scale.y, 1, 4);
ImGui::SliderFloat("Scale X:", (float*)&t.Scale.x, 1, 4);
ImGui::SliderFloat("Position X:", (float*)&t.Position.z, -5, 5);
ImGui::SliderFloat("Scale Y:", (float*)&Cube.transform.Scale.y, 1, 4);
ImGui::SliderFloat("Scale X:", (float*)&Cube.transform.Scale.x, 1, 4);
ImGui::SliderFloat("Camera Zoom:", &cam.Zoom, 40, 190);
ImGui::SliderFloat("Position X:", (float*)&Cube.transform.Position.x, -9, -60);
ImGui::SliderFloat("Rotate Y:", (float*)&Cube.transform.Rotation.y, 0, 180);
ImGui::SliderFloat("Rotate Z:", (float*)&Cube.transform.Rotation.z, 0, 180);
ImGui::End();
@ -182,8 +134,8 @@ int main(int argc, char* argv[]) {
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
glDeleteVertexArrays(1, &VAO);
ElementBuffer.Delete();
Cube.VAO.Delete();
Cube.elementBuffer.Delete();
}