feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style
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tiger tiger tiger
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234 changed files with 38999 additions and 10578 deletions
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@ -2,26 +2,21 @@
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*
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* raylib [shaders] example - basic lighting
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*
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* Example complexity rating: [★★★★] 4/4
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*
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* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
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* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
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* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version
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*
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* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3).
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* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3)
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*
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* This example has been created using raylib 2.5 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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* Example originally created with raylib 3.0, last time updated with raylib 4.2
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*
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* Example contributed by Chris Camacho (@codifies) and reviewed by Ramon Santamaria (@raysan5)
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* Example contributed by Chris Camacho (@chriscamacho) and reviewed by Ramon Santamaria (@raysan5)
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*
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* Chris Camacho (@codifies - http://bedroomcoders.co.uk/) notes:
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* This is based on the PBR lighting example, but greatly simplified to aid learning...
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* actually there is very little of the PBR example left!
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* When I first looked at the bewildering complexity of the PBR example I feared
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* I would never understand how I could do simple lighting with raylib however its
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* a testement to the authors of raylib (including rlights.h) that the example
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* came together fairly quickly.
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*
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* Copyright (c) 2019 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5)
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* Copyright (c) 2019-2025 Chris Camacho (@chriscamacho) and Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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@ -31,52 +26,55 @@ using Examples.Shared;
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namespace Examples.Shaders;
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public class BasicLighting
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public class BasicLighting : IExample
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{
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const int GLSL_VERSION = 330;
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private const int screenWidth = 800;
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private const int screenHeight = 450;
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public unsafe static int Main()
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#if BROWSER
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const int GlslVersion = 100; // WebGL1 needs GLSL ES 100
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#else
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private const int GlslVersion = 330;
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#endif
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public string Name => "Shaders / Basic Lighting";
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public string Title => "raylib [shaders] example - basic lighting";
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public ConfigFlags ConfigFlags => ConfigFlags.Msaa4xHint;
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private Camera3D camera;
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private Shader shader;
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private Light[] lights;
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public unsafe void Init()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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// Enable Multi Sampling Anti Aliasing 4x (if available)
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SetConfigFlags(ConfigFlags.Msaa4xHint);
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InitWindow(screenWidth, screenHeight, "raylib [shaders] example - basic lighting");
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// Define the camera to look into our 3d world
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Camera3D camera = new();
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camera.Position = new Vector3(2.0f, 4.0f, 6.0f);
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camera.Target = new Vector3(0.0f, 0.5f, 0.0f);
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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camera.FovY = 45.0f;
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camera.Projection = CameraProjection.Perspective;
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camera = new();
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camera.Position = new Vector3(2.0f, 4.0f, 6.0f); // Camera position
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camera.Target = new Vector3(0.0f, 0.5f, 0.0f); // Camera looking at point
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target)
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camera.FovY = 45.0f; // Camera field-of-view Y
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camera.Projection = CameraProjection.Perspective; // Camera projection type
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// Load plane model from a generated mesh
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Model model = LoadModelFromMesh(GenMeshPlane(10.0f, 10.0f, 3, 3));
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Model cube = LoadModelFromMesh(GenMeshCube(2.0f, 4.0f, 2.0f));
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Shader shader = LoadShader(
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"resources/shaders/glsl330/lighting.vs",
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"resources/shaders/glsl330/lighting.fs"
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// Load basic lighting shader
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shader = LoadShader(
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$"resources/shaders/glsl{GlslVersion}/lighting.vs",
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$"resources/shaders/glsl{GlslVersion}/lighting.fs"
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);
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// Get some required shader loactions
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// Get some required shader locations
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shader.Locs[(int)ShaderLocationIndex.VectorView] = GetShaderLocation(shader, "viewPos");
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// NOTE: "matModel" location name is automatically assigned on shader loading,
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// no need to get the location again if using that uniform name
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//shader.Locs[(int)ShaderLocationIndex.MatrixModel] = GetShaderLocation(shader, "matModel");
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// ambient light level
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int ambientLoc = GetShaderLocation(shader, "ambient");
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float[] ambient = new[] { 0.1f, 0.1f, 0.1f, 1.0f };
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// Ambient light level (some basic lighting)
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var ambientLoc = GetShaderLocation(shader, "ambient");
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var ambient = new[] { 0.1f, 0.1f, 0.1f, 1.0f };
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Raylib.SetShaderValue(shader, ambientLoc, ambient, ShaderUniformDataType.Vec4);
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// Assign out lighting shader to model
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model.Materials[0].Shader = shader;
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cube.Materials[0].Shader = shader;
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// Using 4 point lights: Color.gold, Color.red, Color.green and Color.blue
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Light[] lights = new Light[4];
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// Create lights
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lights = new Light[4];
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lights[0] = Rlights.CreateLight(
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0,
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LightType.Point,
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@ -109,114 +107,116 @@ public class BasicLighting
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Color.Blue,
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shader
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);
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}
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SetTargetFPS(60);
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public unsafe void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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UpdateCamera(ref camera, CameraMode.Orbital);
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// Update the shader with the camera view vector (points towards { 0.0f, 0.0f, 0.0f })
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Raylib.SetShaderValue(
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shader,
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shader.Locs[(int)ShaderLocationIndex.VectorView],
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camera.Position,
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ShaderUniformDataType.Vec3
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);
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// Check key inputs to enable/disable lights
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if (IsKeyPressed(KeyboardKey.Y))
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{
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lights[0].Enabled = !lights[0].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.R))
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{
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lights[1].Enabled = !lights[1].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.G))
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{
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lights[2].Enabled = !lights[2].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.B))
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{
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lights[3].Enabled = !lights[3].Enabled;
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}
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// Update light values (actually, only enable/disable them)
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for (var i = 0; i < 4; i++)
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{
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Rlights.UpdateLightValues(shader, lights[i]);
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(Color.RayWhite);
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BeginMode3D(camera);
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BeginShaderMode(shader);
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DrawPlane(Vector3.Zero, new Vector2(10.0f, 10.0f), Color.White);
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DrawCube(Vector3.Zero, 2.0f, 4.0f, 2.0f, Color.White);
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EndShaderMode();
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// Draw spheres to show where the lights are
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for (var i = 0; i < 4; i++)
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{
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if (lights[i].Enabled)
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{
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DrawSphereEx(lights[i].Position, 0.2f, 8, 8, lights[i].Color);
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}
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else
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{
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DrawSphereWires(lights[i].Position, 0.2f, 8, 8, ColorAlpha(lights[i].Color, 0.3f));
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}
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}
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DrawGrid(10, 1.0f);
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EndMode3D();
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DrawFPS(10, 10);
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DrawText("Use keys [Y][R][G][B] to toggle lights", 10, 40, 20, Color.DarkGray);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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public void Unload()
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{
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UnloadShader(shader); // Unload shader
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}
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public static int Main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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SetConfigFlags(ConfigFlags.Msaa4xHint); // Enable Multi Sampling Anti Aliasing 4x (if available)
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InitWindow(screenWidth, screenHeight, "raylib [shaders] example - basic lighting");
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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var game = new BasicLighting();
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game.Init();
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// Main game loop
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while (!WindowShouldClose())
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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UpdateCamera(ref camera, CameraMode.Orbital);
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if (IsKeyPressed(KeyboardKey.Y))
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{
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lights[0].Enabled = !lights[0].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.R))
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{
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lights[1].Enabled = !lights[1].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.G))
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{
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lights[2].Enabled = !lights[2].Enabled;
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}
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if (IsKeyPressed(KeyboardKey.B))
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{
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lights[3].Enabled = !lights[3].Enabled;
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}
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// Update light values (actually, only enable/disable them)
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Rlights.UpdateLightValues(shader, lights[0]);
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Rlights.UpdateLightValues(shader, lights[1]);
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Rlights.UpdateLightValues(shader, lights[2]);
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Rlights.UpdateLightValues(shader, lights[3]);
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// Update the light shader with the camera view position
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Raylib.SetShaderValue(
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shader,
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shader.Locs[(int)ShaderLocationIndex.VectorView],
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camera.Position,
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ShaderUniformDataType.Vec3
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);
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(Color.RayWhite);
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BeginMode3D(camera);
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DrawModel(model, Vector3.Zero, 1.0f, Color.White);
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DrawModel(cube, Vector3.Zero, 1.0f, Color.White);
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// Draw markers to show where the lights are
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if (lights[0].Enabled)
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{
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DrawSphereEx(lights[0].Position, 0.2f, 8, 8, Color.Yellow);
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}
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else
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{
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DrawSphereWires(lights[0].Position, 0.2f, 8, 8, ColorAlpha(Color.Yellow, 0.3f));
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}
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if (lights[1].Enabled)
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{
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DrawSphereEx(lights[1].Position, 0.2f, 8, 8, Color.Red);
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}
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else
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{
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DrawSphereWires(lights[1].Position, 0.2f, 8, 8, ColorAlpha(Color.Red, 0.3f));
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}
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if (lights[2].Enabled)
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{
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DrawSphereEx(lights[2].Position, 0.2f, 8, 8, Color.Green);
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}
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else
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{
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DrawSphereWires(lights[2].Position, 0.2f, 8, 8, ColorAlpha(Color.Green, 0.3f));
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}
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if (lights[3].Enabled)
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{
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DrawSphereEx(lights[3].Position, 0.2f, 8, 8, Color.Blue);
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}
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else
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{
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DrawSphereWires(lights[3].Position, 0.2f, 8, 8, ColorAlpha(Color.Blue, 0.3f));
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}
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DrawGrid(10, 1.0f);
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EndMode3D();
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DrawFPS(10, 10);
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DrawText("Use keys [Y][R][G][B] to toggle lights", 10, 40, 20, Color.DarkGray);
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EndDrawing();
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//----------------------------------------------------------------------------------
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game.Update();
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}
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game.Unload();
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// De-Initialization
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//--------------------------------------------------------------------------------------
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UnloadModel(model);
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UnloadModel(cube);
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UnloadShader(shader);
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CloseWindow();
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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