private void LoadModel(string model)
{
scene.RotX = 0;
scene.RotY = 0;
scene.Model = ObjLoader.Load(model);
}
static unsafe void Main(string[] args)
{
if (SDL.SDL_Init(SDL.SDL_INIT_VIDEO) != 0)
{
Console.WriteLine("SDL_Init failed");
return;
}
var sdlWindow = SDL.SDL_CreateWindow("My Game Window",
SDL.SDL_WINDOWPOS_UNDEFINED,
SDL.SDL_WINDOWPOS_UNDEFINED,
WindowWidth, WindowHeight,
//SDL.SDL_WindowFlags.SDL_WINDOW_FULLSCREEN |
SDL.SDL_WindowFlags.SDL_WINDOW_OPENGL
);
var sdlRenderer = SDL.SDL_CreateRenderer(sdlWindow, -1, 0);
var sdlTexture = SDL.SDL_CreateTexture(sdlRenderer,
SDL.SDL_PIXELFORMAT_ARGB8888,
(int)SDL.SDL_TextureAccess.SDL_TEXTUREACCESS_STREAMING,
WindowWidth, WindowHeight);
var softwareBuffer = new SoftwareBuffer(WindowWidth, WindowHeight);
//var cubeBuilder1 = new BoxGeometryGenerator(0.5f, new Vector3(1, 0, 1));
var cubeBuilder2 = new BoxGeometryGenerator(0.5f, new Vector3(1, 0, 0));
var cubeBuilder3 = new BoxGeometryGenerator(0.5f, new Vector3(0, 1, 0));
var cubeBuilder4 = new BoxGeometryGenerator(0.5f, new Vector3(0, 0, 1));
var vertexBuffer = new Vector4[10000];
// Obj test
var cubeObj = new ObjLoader().Load(
@"d:\github\SoftwareRenderer\Blender\test.obj",
@"d:\github\SoftwareRenderer\Blender\test.mtl"
);
var torusObj = new ObjLoader().Load(
@"d:\github\SoftwareRenderer\Blender\torus.obj",
@"d:\github\SoftwareRenderer\Blender\torus.mtl"
);
// Scene
var zeroCamera = new Camera(60f, (float)640 / 480, 0.3f, 1000f);
zeroCamera.Transform.Position = Vector3.Zero;
zeroCamera.Transform.Rotation = Vector3.Zero;
zeroCamera.Transform.Scale = Vector3.One;
var camera = new Camera(60f, (float)640 / 480, 0.3f, 1000f);
camera.Transform.Position = new Vector3(2.5f, 1.5f, -3f);
camera.Transform.Rotation = new Vector3(4f, 0, 0);
camera.Transform.Scale = Vector3.One;
float cubeRot = 0;
var rotCube = new Transform
{
Position = new Vector3(0, 0, 4),
Rotation = new Vector3(0, 0, 0)
};
var grandParent = new Transform
{
Position = new Vector3(2, 0.25f, 5),
Rotation = new Vector3(0, 45f, 0),
Scale = Vector3.One
};
var parent = new Transform
{
Position = new Vector3(2, 0, 0),
Rotation = new Vector3(-45, 0, 0),
Scale = Vector3.One
};
grandParent.AddChild(parent);
var child = new Transform
{
Position = new Vector3(0, 0, 3),
Rotation = Vector3.Zero,
Scale = Vector3.One
};
parent.AddChild(child);
var lastTicks = SDL.SDL_GetTicks();
// loop until done
while (_running)
{
// handle events
while (SDL.SDL_PollEvent(out var @event) != 0)
{
HandleEvent(@event);
}
//Software stuff here!
//Temp gfx OR hack
_cnt++;
for (uint y = 0; y < WindowHeight; y++)
{
for (uint x = 0; x < WindowWidth; x++)
{
softwareBuffer.Buffer[y * WindowWidth + x] = (x * 0x00000100) | ((y + _cnt) * 0x00010000);
}
}
//var u = new Vector3(190, 55, 0);
//var v = new Vector3(45, -190, 0);
//var dot = Vector3.Dot(u, v);
//var lengthOfPontoQ = dot / u.Magnitude();
////Console.WriteLine($"lengthOfPontoQ: {lengthOfPontoQ}");
//var proj = Vector3.Proj(u, v);
//var theta = Math.Acos(dot / (u.Magnitude() * v.Magnitude())) * (180.0 / Math.PI);
//Console.WriteLine($"theta: {theta}");
////var perp = Vector3.Perp(p, q);
////Console.WriteLine($"dot: {dot}");
//softwareBuffer.DrawLine(
// softwareBuffer.Width / 2,
// softwareBuffer.Heigth / 2,
// (int)(softwareBuffer.Width / 2 + u.X),
// (int)(softwareBuffer.Heigth / 2 + u.Y),
// 0x00ff0000);
//softwareBuffer.DrawLine(
// softwareBuffer.Width / 2,
// softwareBuffer.Heigth / 2,
// (int)(softwareBuffer.Width / 2 + v.X),
// (int)(softwareBuffer.Heigth / 2 + v.Y),
// 0x0000ff00);
//softwareBuffer.DrawLine(
// softwareBuffer.Width / 2,
// softwareBuffer.Heigth / 2,
// (int)(softwareBuffer.Width / 2 + Vector3.Normalize(u).X * lengthOfPontoQ),
// (int)(softwareBuffer.Heigth / 2 + Vector3.Normalize(u).Y * lengthOfPontoQ),
// 0x000000ff);
rotCube.Rotation = new Vector3(0, cubeRot, 0);
child.Rotation = new Vector3(cubeRot / 2, 0, cubeRot * 1.3f);
cubeRot += 1f;
// Gizmo
softwareBuffer.DrawLine(10, 10, 40, 10, new Vector3(1, 0, 0));
softwareBuffer.DrawLine(35, 5, 40, 10, new Vector3(1, 0, 0));
softwareBuffer.DrawLine(35, 15, 40, 10, new Vector3(1, 0, 0));
softwareBuffer.DrawLine(10, 10, 10, 40, new Vector3(0, 1, 0));
softwareBuffer.DrawLine(5, 35, 10, 40, new Vector3(0, 1, 0));
softwareBuffer.DrawLine(15, 35, 10, 40, new Vector3(0, 1, 0));
softwareBuffer.DrawLine(10, 10, 25, 25, new Vector3(0, 0, 1));
softwareBuffer.DrawLine(20, 25, 25, 25, new Vector3(0, 0, 1));
softwareBuffer.DrawLine(25, 20, 25, 25, new Vector3(0, 0, 1));
// Render test
var activeCamera = camera;
var sceneObjects = new List <SceneObject>()
{
new SceneObject
{
Transform = rotCube,
Mesh = cubeObj.Single(x => x.Name == "Cube")
},
new SceneObject
{
Transform = grandParent,
Mesh = cubeBuilder2.Mesh
},
new SceneObject
{
Transform = parent,
Mesh = cubeBuilder3.Mesh
},
new SceneObject
{
Transform = child,
Mesh = torusObj.Single(x => x.Name == "Torus")
},
};
foreach (var sceneObject in sceneObjects)
{
var modelViewTransform = activeCamera.Projection * activeCamera.WorldToCamera * sceneObject.Transform.LocalToWorldTransform;
var mesh = sceneObject.Mesh;
var verticeCount = 0;
foreach (var vertex in mesh.Vertices)
{
var inClipSpace = modelViewTransform * vertex;
inClipSpace.X /= inClipSpace.W;
inClipSpace.Y /= inClipSpace.W;
inClipSpace.Z /= inClipSpace.W;
inClipSpace.X += 1f;
inClipSpace.Y += 1f;
inClipSpace.X *= 0.5f;
inClipSpace.Y *= 0.5f;
//inClipSpace.X *= softwareBuffer.Width;
//inClipSpace.Y *= softwareBuffer.Heigth;
//inClipSpace.Z *= 0.5f;
vertexBuffer[verticeCount++] = inClipSpace;
}
//var xx1 = 0.10f;
//var yy1 = 0.10f;
//var xx2 = 0.15f;
//var yy2 = 0.15f;
//var xx3 = 0.95f;
//var yy3 = 0.15f;
//var col = new Vector3(1, 0 ,1);
//var col2 = new Vector3(1, 1 ,1);
//var col3 = new Vector3(0.5f, 0 ,0);
//softwareBuffer.DrawTriangle(xx1, yy1, xx2, yy2, xx3, yy3, col);
//softwareBuffer.DrawLine(
// xx1 ,
// yy1,
// xx2,
// yy2,
// col2);
//softwareBuffer.DrawLine(
// xx2,
// yy2,
// xx3,
// yy3,
// col2);
//softwareBuffer.DrawLine(
// xx3,
// yy3,
// xx1,
// yy1,
// col2);
//softwareBuffer.SetPixel(xx1, yy1, col3.AsUint());
//softwareBuffer.SetPixel(xx2, yy2, col3.AsUint());
//softwareBuffer.SetPixel(xx3, yy3, col3.AsUint());
for (int face = 0; face < sceneObject.Mesh.Indices.Length / 3; face++)
{
var i1 = mesh.Indices[face * 3 + 0];
var i2 = mesh.Indices[face * 3 + 1];
var i3 = mesh.Indices[face * 3 + 2];
var x1 = vertexBuffer[i1].X;
var y1 = vertexBuffer[i1].Y;
var x2 = vertexBuffer[i2].X;
var y2 = vertexBuffer[i2].Y;
var x3 = vertexBuffer[i3].X;
var y3 = vertexBuffer[i3].Y;
//softwareBuffer.DrawLine(
// (int)(softwareBuffer.Width / 2 + x1),
// (int)(softwareBuffer.Heigth / 2 + y1),
// (int)(softwareBuffer.Width / 2 + x2),
// (int)(softwareBuffer.Heigth / 2 + y2),
// 0x000000ff);
//softwareBuffer.DrawLine(
// (int)(softwareBuffer.Width / 2 + x2),
// (int)(softwareBuffer.Heigth / 2 + y2),
// (int)(softwareBuffer.Width / 2 + x3),
// (int)(softwareBuffer.Heigth / 2 + y3),
// 0x000000ff);
//softwareBuffer.DrawLine(
// (int)(softwareBuffer.Width / 2 + x3),
// (int)(softwareBuffer.Heigth / 2 + y3),
// (int)(softwareBuffer.Width / 2 + x1),
// (int)(softwareBuffer.Heigth / 2 + y1),
// 0x000000ff);
//var a = new Vector3(vertexBuffer[i1].X, vertexBuffer[i1].Y, vertexBuffer[i1].Z);
//var an = Vector3.Normalize(a);
//var b = new Vector3(vertexBuffer[i2].X, vertexBuffer[i2].Y, vertexBuffer[i2].Z);
//var bn = Vector3.Normalize(b);
//var dot = Vector3.Dot(a, b);
//var dotn = Vector3.Dot(an, bn);
//var c = new Vector3(
// (vertexBuffer[i2] - vertexBuffer[i1]).X,
// (vertexBuffer[i2] - vertexBuffer[i1]).Y,
// (vertexBuffer[i2] - vertexBuffer[i1]).Z
// );
//var d = new Vector3(
// (vertexBuffer[i3] - vertexBuffer[i1]).X,
// (vertexBuffer[i3] - vertexBuffer[i1]).Y,
// (vertexBuffer[i3] - vertexBuffer[i1]).Z
//);
//var ddot = Vector3.Dot(c, d);
//var cn = Vector3.Normalize(c);
//var dn = Vector3.Normalize(d);
//var ddotn = Vector3.Dot(cn, dn);
//if (ddotn > 0)
var a = new Vector3(
(vertexBuffer[i3] - vertexBuffer[i1]).X,
(vertexBuffer[i3] - vertexBuffer[i1]).Y,
(vertexBuffer[i3] - vertexBuffer[i1]).Z
);
var b = new Vector3(
(vertexBuffer[i2] - vertexBuffer[i1]).X,
(vertexBuffer[i2] - vertexBuffer[i1]).Y,
(vertexBuffer[i2] - vertexBuffer[i1]).Z
);
var n = Vector3.Cross(a, b);
var nn = Vector3.Normalize(n);
var l = Vector3.Forward;
var i = Vector3.Dot(nn, l);
if (i > 0)
{
softwareBuffer.DrawTriangle(x1, y1, x2, y2, x3, y3, mesh.Material.Diffuse);
softwareBuffer.DrawLine(
x1,
y1,
x2,
y2,
mesh.Material.Diffuse / 2);
softwareBuffer.DrawLine(
x2,
y2,
x3,
y3,
mesh.Material.Diffuse / 2);
softwareBuffer.DrawLine(
x3,
y3,
x1,
y1,
mesh.Material.Diffuse / 2);
}
}
}
// Software buffer to Texture
fixed(uint *fixedSoftwareBuffer = softwareBuffer.Buffer)
{
var myPixels = (IntPtr)fixedSoftwareBuffer;
SDL.SDL_UpdateTexture(sdlTexture, IntPtr.Zero, myPixels, WindowWidth * sizeof(uint));
}
// Present screen with Texture
SDL.SDL_RenderClear(sdlRenderer);
SDL.SDL_RenderCopy(sdlRenderer, sdlTexture, IntPtr.Zero, IntPtr.Zero);
SDL.SDL_RenderPresent(sdlRenderer);
// frames per second
var ticks = SDL.SDL_GetTicks();
var ticksDiff = ticks - lastTicks;
if (ticksDiff == 0)
{
continue;
}
lastTicks = ticks;
var fps = 1000 / ticksDiff;
Console.WriteLine($"Frames per second: {fps}");
//Console.WriteLine($"cube0: {vertexBuffer[0].X},{vertexBuffer[0].Y},{vertexBuffer[0].Z}");
}
SDL.SDL_Quit();
}
