From cdda4c4182c9ee068567529715e4a5c68a8efb58 Mon Sep 17 00:00:00 2001 From: bonmas14 Date: Sat, 20 Sep 2025 22:28:15 +0300 Subject: Init commit v1.0 --- .../examples/shaders/shaders_basic_lighting.c | 142 +++++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 deps/raylib/examples/shaders/shaders_basic_lighting.c (limited to 'deps/raylib/examples/shaders/shaders_basic_lighting.c') diff --git a/deps/raylib/examples/shaders/shaders_basic_lighting.c b/deps/raylib/examples/shaders/shaders_basic_lighting.c new file mode 100644 index 0000000..77fedfe --- /dev/null +++ b/deps/raylib/examples/shaders/shaders_basic_lighting.c @@ -0,0 +1,142 @@ +/******************************************************************************************* +* +* raylib [shaders] example - basic lighting +* +* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support, +* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version. +* +* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3). +* +* Example originally created with raylib 3.0, last time updated with raylib 4.2 +* +* Example contributed by Chris Camacho (@codifies) 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) 2019-2024 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#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; + + SetConfigFlags(FLAG_MSAA_4X_HINT); // Enable Multi Sampling Anti Aliasing 4x (if available) + InitWindow(screenWidth, screenHeight, "raylib [shaders] example - basic lighting"); + + // Define the camera to look into our 3d world + Camera camera = { 0 }; + camera.position = (Vector3){ 2.0f, 4.0f, 6.0f }; // Camera position + camera.target = (Vector3){ 0.0f, 0.5f, 0.0f }; // Camera looking at point + camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target) + camera.fovy = 45.0f; // Camera field-of-view Y + camera.projection = CAMERA_PERSPECTIVE; // Camera projection type + + // Load basic lighting shader + Shader shader = LoadShader(TextFormat("resources/shaders/glsl%i/lighting.vs", GLSL_VERSION), + TextFormat("resources/shaders/glsl%i/lighting.fs", GLSL_VERSION)); + // Get some required shader locations + shader.locs[SHADER_LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos"); + // NOTE: "matModel" location name is automatically assigned on shader loading, + // no need to get the location again if using that uniform name + //shader.locs[SHADER_LOC_MATRIX_MODEL] = GetShaderLocation(shader, "matModel"); + + // Ambient light level (some basic lighting) + int ambientLoc = GetShaderLocation(shader, "ambient"); + SetShaderValue(shader, ambientLoc, (float[4]){ 0.1f, 0.1f, 0.1f, 1.0f }, SHADER_UNIFORM_VEC4); + + // Create lights + Light lights[MAX_LIGHTS] = { 0 }; + lights[0] = CreateLight(LIGHT_POINT, (Vector3){ -2, 1, -2 }, Vector3Zero(), YELLOW, shader); + lights[1] = CreateLight(LIGHT_POINT, (Vector3){ 2, 1, 2 }, Vector3Zero(), RED, shader); + lights[2] = CreateLight(LIGHT_POINT, (Vector3){ -2, 1, 2 }, Vector3Zero(), GREEN, shader); + lights[3] = CreateLight(LIGHT_POINT, (Vector3){ 2, 1, -2 }, Vector3Zero(), BLUE, shader); + + SetTargetFPS(60); // Set our game to run at 60 frames-per-second + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + UpdateCamera(&camera, CAMERA_ORBITAL); + + // Update the shader with the camera view vector (points towards { 0.0f, 0.0f, 0.0f }) + float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z }; + SetShaderValue(shader, shader.locs[SHADER_LOC_VECTOR_VIEW], cameraPos, SHADER_UNIFORM_VEC3); + + // Check key inputs to enable/disable lights + if (IsKeyPressed(KEY_Y)) { lights[0].enabled = !lights[0].enabled; } + if (IsKeyPressed(KEY_R)) { lights[1].enabled = !lights[1].enabled; } + if (IsKeyPressed(KEY_G)) { lights[2].enabled = !lights[2].enabled; } + if (IsKeyPressed(KEY_B)) { lights[3].enabled = !lights[3].enabled; } + + // Update light values (actually, only enable/disable them) + for (int i = 0; i < MAX_LIGHTS; i++) UpdateLightValues(shader, lights[i]); + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + BeginMode3D(camera); + + BeginShaderMode(shader); + + DrawPlane(Vector3Zero(), (Vector2) { 10.0, 10.0 }, WHITE); + DrawCube(Vector3Zero(), 2.0, 4.0, 2.0, WHITE); + + EndShaderMode(); + + // Draw spheres to show where the lights are + for (int i = 0; i < MAX_LIGHTS; i++) + { + if (lights[i].enabled) DrawSphereEx(lights[i].position, 0.2f, 8, 8, lights[i].color); + else DrawSphereWires(lights[i].position, 0.2f, 8, 8, ColorAlpha(lights[i].color, 0.3f)); + } + + DrawGrid(10, 1.0f); + + EndMode3D(); + + DrawFPS(10, 10); + + DrawText("Use keys [Y][R][G][B] to toggle lights", 10, 40, 20, DARKGRAY); + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadShader(shader); // Unload shader + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +} + -- cgit v1.2.3-70-g09d2