|
|
|
@ -7,21 +7,13 @@ |
|
|
|
* |
|
|
|
* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3). |
|
|
|
* |
|
|
|
* This example has been created using raylib 2.5 (www.raylib.com) |
|
|
|
* This example has been created using raylib 3.8 (www.raylib.com) |
|
|
|
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) |
|
|
|
* |
|
|
|
* Example contributed by Chris Camacho (@codifies) and reviewed by Ramon Santamaria (@raysan5) |
|
|
|
* Example contributed by Chris Camacho (@codifies, http://bedroomcoders.co.uk/) and |
|
|
|
* reviewed by Ramon Santamaria (@raysan5) |
|
|
|
* |
|
|
|
* Chris Camacho (@codifies - http://bedroomcoders.co.uk/) notes: |
|
|
|
* |
|
|
|
* This is based on the PBR lighting example, but greatly simplified to aid learning... |
|
|
|
* actually there is very little of the PBR example left! |
|
|
|
* When I first looked at the bewildering complexity of the PBR example I feared |
|
|
|
* I would never understand how I could do simple lighting with raylib however its |
|
|
|
* a testement to the authors of raylib (including rlights.h) that the example |
|
|
|
* came together fairly quickly. |
|
|
|
* |
|
|
|
* Copyright (c) 2019 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5) |
|
|
|
* Copyright (c) 2019-2021 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5) |
|
|
|
* |
|
|
|
********************************************************************************************/ |
|
|
|
|
|
|
|
@ -50,49 +42,39 @@ int main(void) |
|
|
|
|
|
|
|
// Define the camera to look into our 3d world |
|
|
|
Camera camera = { 0 }; |
|
|
|
camera.position = (Vector3){ 2.0f, 2.0f, 6.0f }; // Camera position |
|
|
|
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 mode type |
|
|
|
|
|
|
|
// Load models |
|
|
|
Model modelA = LoadModelFromMesh(GenMeshTorus(0.4f, 1.0f, 16, 32)); |
|
|
|
Model modelB = LoadModelFromMesh(GenMeshCube(1.0f, 1.0f, 1.0f)); |
|
|
|
Model modelC = LoadModelFromMesh(GenMeshSphere(0.5f, 32, 32)); |
|
|
|
|
|
|
|
// Load models texture |
|
|
|
Texture texture = LoadTexture("resources/texel_checker.png"); |
|
|
|
|
|
|
|
// Assign texture to default model material |
|
|
|
modelA.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; |
|
|
|
modelB.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; |
|
|
|
modelC.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; |
|
|
|
camera.projection = CAMERA_PERSPECTIVE; // Camera mode type |
|
|
|
|
|
|
|
// Load plane model from a generated mesh |
|
|
|
Model model = LoadModelFromMesh(GenMeshPlane(10.0f, 10.0f, 3, 3)); |
|
|
|
Model cube = LoadModelFromMesh(GenMeshCube(2.0f, 4.0f, 2.0f)); |
|
|
|
|
|
|
|
Shader shader = LoadShader(TextFormat("resources/shaders/glsl%i/base_lighting.vs", GLSL_VERSION), |
|
|
|
TextFormat("resources/shaders/glsl%i/lighting.fs", GLSL_VERSION)); |
|
|
|
|
|
|
|
// Get some shader loactions |
|
|
|
shader.locs[SHADER_LOC_MATRIX_MODEL] = GetShaderLocation(shader, "matModel"); |
|
|
|
// Get some required shader loactions |
|
|
|
shader.locs[SHADER_LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos"); |
|
|
|
|
|
|
|
// ambient light level |
|
|
|
// 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]){ 0.2f, 0.2f, 0.2f, 1.0f }, SHADER_UNIFORM_VEC4); |
|
|
|
|
|
|
|
float angle = 6.282f; |
|
|
|
SetShaderValue(shader, ambientLoc, (float[4]){ 0.1f, 0.1f, 0.1f, 1.0f }, SHADER_UNIFORM_VEC4); |
|
|
|
|
|
|
|
// All models use the same shader |
|
|
|
modelA.materials[0].shader = shader; |
|
|
|
modelB.materials[0].shader = shader; |
|
|
|
modelC.materials[0].shader = shader; |
|
|
|
// Assign out lighting shader to model |
|
|
|
model.materials[0].shader = shader; |
|
|
|
cube.materials[0].shader = shader; |
|
|
|
|
|
|
|
// Using 4 point ">lights, white, red, green and blue |
|
|
|
// Using 4 point l">lights: gold, red, green and blue |
|
|
|
Light lights[MAX_LIGHTS] = { 0 }; |
|
|
|
lights[0] = CreateLight(LIGHT_POINT, (Vector3){ mi">4, 2, 4 }, Vector3Zero(), WHITE, shader); |
|
|
|
lights[1] = CreateLight(LIGHT_POINT, (Vector3){ 4, 2, 4 }, Vector3Zero(), RED, shader); |
|
|
|
lights[2] = CreateLight(LIGHT_POINT, (Vector3){ mi">0, 4, 2 }, Vector3Zero(), GREEN, shader); |
|
|
|
lights[3] = CreateLight(LIGHT_POINT, (Vector3){ 0, 4, 2 }, Vector3Zero(), BLUE, shader); |
|
|
|
lights[0] = CreateLight(LIGHT_POINT, (Vector3){ o">-2, 1, -2 }, Vector3Zero(), YELLOW, shader); |
|
|
|
lights[1] = CreateLight(LIGHT_POINT, (Vector3){ 2, 1, 2 }, Vector3Zero(), RED, shader); |
|
|
|
lights[2] = CreateLight(LIGHT_POINT, (Vector3){ o">-2, 1, 2 }, Vector3Zero(), GREEN, shader); |
|
|
|
lights[3] = CreateLight(LIGHT_POINT, (Vector3){ 2, 1, -2 }, Vector3Zero(), BLUE, shader); |
|
|
|
|
|
|
|
SetCameraMode(camera, CAMERA_ORBITAL); // Set an orbital camera mode |
|
|
|
|
|
|
|
@ -104,34 +86,21 @@ int main(void) |
|
|
|
{ |
|
|
|
// Update |
|
|
|
//---------------------------------------------------------------------------------- |
|
|
|
if (IsKeyPressed(KEY_W)) { lights[0].enabled = !lights[0].enabled; } |
|
|
|
UpdateCamera(&camera); // Update camera |
|
|
|
|
|
|
|
// 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; } |
|
|
|
|
|
|
|
UpdateCamera(&camera); // Update camera |
|
|
|
|
|
|
|
// Make the lights do differing orbits |
|
|
|
angle -= 0.02f; |
|
|
|
lights[0].position.x = cosf(angle)*4.0f; |
|
|
|
lights[0].position.z = sinf(angle)*4.0f; |
|
|
|
lights[1].position.x = cosf(-angle*0.6f)*4.0f; |
|
|
|
lights[1].position.z = sinf(-angle*0.6f)*4.0f; |
|
|
|
lights[2].position.y = cosf(angle*0.2f)*4.0f; |
|
|
|
lights[2].position.z = sinf(angle*0.2f)*4.0f; |
|
|
|
lights[3].position.y = cosf(-angle*0.35f)*4.0f; |
|
|
|
lights[3].position.z = sinf(-angle*0.35f)*4.0f; |
|
|
|
|
|
|
|
|
|
|
|
// Update light values (actually, only enable/disable them) |
|
|
|
UpdateLightValues(shader, lights[0]); |
|
|
|
UpdateLightValues(shader, lights[1]); |
|
|
|
UpdateLightValues(shader, lights[2]); |
|
|
|
UpdateLightValues(shader, lights[3]); |
|
|
|
|
|
|
|
// Rotate the torus |
|
|
|
modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateX(-0.025f)); |
|
|
|
modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateZ(0.012f)); |
|
|
|
|
|
|
|
// Update the light shader with the camera view position |
|
|
|
// 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); |
|
|
|
//---------------------------------------------------------------------------------- |
|
|
|
@ -144,16 +113,18 @@ int main(void) |
|
|
|
|
|
|
|
BeginMode3D(camera); |
|
|
|
|
|
|
|
// Draw the three models |
|
|
|
DrawModel(modelA, Vector3Zero(), 1.0f, WHITE); |
|
|
|
DrawModel(modelB, (Vector3){-1.6f,0.0f,0.0f}, 1.0f, WHITE); |
|
|
|
DrawModel(modelC, (Vector3){ 1.6f,0.0f,0.0f}, 1.0f, WHITE); |
|
|
|
DrawModel(model, Vector3Zero(), 1.0f, WHITE); |
|
|
|
DrawModel(cube, Vector3Zero(), 1.0f, WHITE); |
|
|
|
|
|
|
|
// Draw markers to show where the lights are |
|
|
|
if (lights[0].enabled) { DrawSphereEx(lights[0].position, 0.2f, 8, 8, WHITE); } |
|
|
|
if (lights[1].enabled) { DrawSphereEx(lights[1].position, 0.2f, 8, 8, RED); } |
|
|
|
if (lights[2].enabled) { DrawSphereEx(lights[2].position, 0.2f, 8, 8, GREEN); } |
|
|
|
if (lights[3].enabled) { DrawSphereEx(lights[3].position, 0.2f, 8, 8, BLUE); } |
|
|
|
if (lights[0].enabled) DrawSphereEx(lights[0].position, 0.2f, 8, 8, YELLOW); |
|
|
|
else DrawSphereWires(lights[0].position, 0.2f, 8, 8, ColorAlpha(YELLOW, 0.3f)); |
|
|
|
if (lights[1].enabled) DrawSphereEx(lights[1].position, 0.2f, 8, 8, RED); |
|
|
|
else DrawSphereWires(lights[1].position, 0.2f, 8, 8, ColorAlpha(RED, 0.3f)); |
|
|
|
if (lights[2].enabled) DrawSphereEx(lights[2].position, 0.2f, 8, 8, GREEN); |
|
|
|
else DrawSphereWires(lights[2].position, 0.2f, 8, 8, ColorAlpha(GREEN, 0.3f)); |
|
|
|
if (lights[3].enabled) DrawSphereEx(lights[3].position, 0.2f, 8, 8, BLUE); |
|
|
|
else DrawSphereWires(lights[3].position, 0.2f, 8, 8, ColorAlpha(BLUE, 0.3f)); |
|
|
|
|
|
|
|
DrawGrid(10, 1.0f); |
|
|
|
|
|
|
|
@ -161,7 +132,7 @@ int main(void) |
|
|
|
|
|
|
|
DrawFPS(10, 10); |
|
|
|
|
|
|
|
DrawText("Use keys RGBW to toggle lights", 10, 30, 20, DARKGRAY); |
|
|
|
DrawText("Use keys [Y][R][G][B] to toggle lights", 10, 40, 20, DARKGRAY); |
|
|
|
|
|
|
|
EndDrawing(); |
|
|
|
//---------------------------------------------------------------------------------- |
|
|
|
@ -169,14 +140,11 @@ int main(void) |
|
|
|
|
|
|
|
// De-Initialization |
|
|
|
//-------------------------------------------------------------------------------------- |
|
|
|
UnloadModel(modelA); // Unload the modelA |
|
|
|
UnloadModel(modelB); // Unload the modelB |
|
|
|
UnloadModel(modelC); // Unload the modelC |
|
|
|
|
|
|
|
UnloadTexture(texture); // Unload the texture |
|
|
|
UnloadShader(shader); // Unload shader |
|
|
|
UnloadModel(model); // Unload the model |
|
|
|
UnloadModel(cube); // Unload the model |
|
|
|
UnloadShader(shader); // Unload shader |
|
|
|
|
|
|
|
CloseWindow(); // Close window and OpenGL context |
|
|
|
CloseWindow(); // Close window and OpenGL context |
|
|
|
//-------------------------------------------------------------------------------------- |
|
|
|
|
|
|
|
return 0; |
|
|
|
|
raysan5
3 years ago
