shaders-vertex_displacement init

examples/Makefile

@@ -608,7 +608,8 @@ SHADERS = \
     shaders/shaders_texture_outline \
     shaders/shaders_texture_tiling \
     shaders/shaders_texture_waves \
-    shaders/shaders_write_depth
+    shaders/shaders_write_depth \
+	shaders/shaders_vertex_displacement
 
 AUDIO = \
     audio/audio_mixed_processor \

examples/Makefile.Web

@@ -476,7 +476,8 @@ SHADERS = \
     shaders/shaders_texture_outline \
     shaders/shaders_texture_tiling \
     shaders/shaders_texture_waves \
-    shaders/shaders_write_depth
+    shaders/shaders_write_depth \
+    shaders/shaders_vertex_displacement \
 
 AUDIO = \
     audio/audio_mixed_processor \

examples/shaders/resources/shaders/glsl330/vertex_displacement.vs

@@ -0,0 +1,43 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+
+uniform float time;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragNormal;
+
+float perlinNoise(vec2 p);
+
+void main()
+{
+    float height = perlinNoise(vertexTexCoord +  vec2(time, time) * 0.01);
+    vec3 displacedPosition = vertexPosition + vec3(0.0, height*2.0, 0.0);
+
+    // Send vertex attributes to fragment shader
+    fragPosition = vec3(matModel*vec4(displacedPosition, 1.0));
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    fragNormal = normalize(vec3(matNormal*vec4(vertexNormal, 1.0)));
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(displacedPosition, 1.0);
+}
+
+float perlinNoise(vec2 p) {
+    // Implement or call your Perlin noise function here
+    // This is a placeholder function
+    return fract(sin(dot(p ,vec2(12.9898,78.233))) * 43758.5453);
+}

examples/shaders/shaders_vertex_displacement.c

@@ -0,0 +1,104 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - Basic window
+*
+*   Example originally created with raylib 4.5, last time updated with raylib 4.5
+*
+*   Example contributed by <user_name> (@<user_github>) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2023 <user_name> (@<user_github>)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+#define RLIGHTS_IMPLEMENTATION
+#include "rlights.h"
+
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [shaders] example - vertex displacement");
+
+    Camera camera = {0};
+    camera.position = (Vector3) {10.0f, 10.0f, 0.0f};
+    camera.target = (Vector3) {0.0f, 0.0f, 0.0f};
+    camera.up = (Vector3) {0.0f, 1.0f, 0.0f};
+    camera.fovy = 60.0f;
+    camera.projection = CAMERA_PERSPECTIVE;
+
+    Mesh planeMesh = GenMeshPlane(30, 30, 30, 30);
+    Model planeModel = LoadModelFromMesh(planeMesh);
+
+    Shader shader = LoadShader(
+        TextFormat("resources/shaders/glsl%i/vertex_displacement.vs", GLSL_VERSION),
+        TextFormat("resources/shaders/glsl%i/lighting.fs", GLSL_VERSION)
+        );
+    shader.locs[SHADER_LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos");
+
+    int ambientLoc = GetShaderLocation(shader, "ambient");
+    SetShaderValue(shader, ambientLoc, (float[4]){ 0.1f, 0.1f, 0.1f, 1.0f }, SHADER_UNIFORM_VEC4);
+
+    Light light = CreateLight(LIGHT_DIRECTIONAL, (Vector3){-10.0f, 10.0f, 10.0f}, Vector3Zero(), WHITE, shader);
+
+    planeModel.materials[0].shader = shader;
+    
+    float time = 0.0f;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        UpdateCamera(&camera, CAMERA_FREE);
+
+        float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z };
+        SetShaderValue(shader, shader.locs[SHADER_LOC_VECTOR_VIEW], cameraPos, SHADER_UNIFORM_VEC3);
+
+        time += GetFrameTime();
+        SetShaderValue(shader, GetShaderLocation(shader, "time"), &time, SHADER_UNIFORM_FLOAT); 
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+            DrawModel(planeModel, (Vector3){ 0.0f, 0.0f, 0.0f }, 1.0f, (Color) {1, 34, 47, 255});
+            EndMode3D();
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+
+    UnloadShader(shader);
+    UnloadModel(planeModel);
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}