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/*******************************************************************************************
*
* raylib [models] example - PBR material
*
* This example has been created using raylib 1.8 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2017 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#include "raymath.h"
#define MAX_LIGHTS 4 // Max lights supported by shader
#define LIGHT_DISTANCE 3.5f // Light distance from world center
#define LIGHT_HEIGHT 1.0f // Light height position
typedef enum {
LIGHT_DIRECTIONAL,
LIGHT_POINT
} LightType;
typedef struct {
bool enabled;
LightType type;
Vector3 position;
Vector3 target;
Color color;
int enabledLoc;
int typeLoc;
int posLoc;
int targetLoc;
int colorLoc;
} Light;
int lightsCount = 0; // Current amount of created lights
Light CreateLight(int type, Vector3 pos, Vector3 targ, Color color, Shader shader); // Defines a light and get locations from PBR shader
void UpdateLightValues(Shader shader, Light light); // Send to PBR shader light values
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
SetConfigFlags(FLAG_MSAA_4X_HINT); // Enable Multi Sampling Anti Aliasing 4x (if available)
InitWindow(screenWidth, screenHeight, "raylib [models] example - pbr material");
// Define the camera to look into our 3d world
Camera camera = {{ 4.0f, 4.0f, 4.0f }, { 0.0f, 0.5f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
// Load model and PBR material
Model model = LoadModel("resources/pbr/trooper.obj");
Texture2D texHDR = LoadTexture("resources/pinetree.hdr");
model.material = LoadMaterialPBR(texHDR, (Color){ 255, 255, 255, 255 }, 1.0f, 1.0f);
SetMaterialTexture(&model.material, MAP_ALBEDO, LoadTexture("resources/pbr/trooper_albedo.png"));
SetMaterialTexture(&model.material, MAP_NORMAL, LoadTexture("resources/pbr/trooper_normals.png"));
SetMaterialTexture(&model.material, MAP_METALNESS, LoadTexture("resources/pbr/trooper_metalness.png"));
SetMaterialTexture(&model.material, MAP_ROUGHNESS, LoadTexture("resources/pbr/trooper_roughness.png"));
SetMaterialTexture(&model.material, MAP_OCCLUSION, LoadTexture("resources/pbr/trooper_ao.png"));
// Set textures filtering for better quality
SetTextureFilter(model.material.maps[MAP_ALBEDO].texture, FILTER_BILINEAR);
SetTextureFilter(model.material.maps[MAP_NORMAL].texture, FILTER_BILINEAR);
SetTextureFilter(model.material.maps[MAP_METALNESS].texture, FILTER_BILINEAR);
SetTextureFilter(model.material.maps[MAP_ROUGHNESS].texture, FILTER_BILINEAR);
SetTextureFilter(model.material.maps[MAP_OCCLUSION].texture, FILTER_BILINEAR);
int renderModeLoc = GetShaderLocation(model.material.shader, "renderMode");
SetShaderValuei(model.material.shader, renderModeLoc, (int[1]){ 0 }, 1);
SetCameraMode(camera, CAMERA_ORBITAL); // Set an orbital camera mode
// Define lights attributes
Light lights[MAX_LIGHTS] = { CreateLight(LIGHT_POINT, (Vector3){ LIGHT_DISTANCE, LIGHT_HEIGHT, 0.0f }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 255, 0, 0, 255 }, model.material.shader),
CreateLight(LIGHT_POINT, (Vector3){ 0.0f, LIGHT_HEIGHT, LIGHT_DISTANCE }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 0, 255, 0, 255 }, model.material.shader),
CreateLight(LIGHT_POINT, (Vector3){ -LIGHT_DISTANCE, LIGHT_HEIGHT, 0.0f }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 0, 0, 255, 255 }, model.material.shader),
CreateLight(LIGHT_DIRECTIONAL, (Vector3){ 0.0f, LIGHT_HEIGHT*2.0f, -LIGHT_DISTANCE }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 255, 0, 255, 255 }, model.material.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); // Update camera
// Send to material PBR shader camera view position
float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z };
SetShaderValue(model.material.shader, model.material.shader.locs[LOC_VECTOR_VIEW], cameraPos, 3);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
Begin3dMode(camera);
DrawModel(model, VectorZero(), 1.0f, WHITE);
DrawGrid(10, 1.0f);
End3dMode();
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModel(model); // Unload skybox model
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
// Defines a light and get locations from PBR shader
Light CreateLight(int type, Vector3 pos, Vector3 targ, Color color, Shader shader)
{
Light light = { 0 };
if (lightsCount < MAX_LIGHTS)
{
light.enabled = true;
light.type = type;
light.position = pos;
light.target = targ;
light.color = color;
char enabledName[32] = "lights[x].enabled\0";
char typeName[32] = "lights[x].type\0";
char posName[32] = "lights[x].position\0";
char targetName[32] = "lights[x].target\0";
char colorName[32] = "lights[x].color\0";
enabledName[7] = '0' + lightsCount;
typeName[7] = '0' + lightsCount;
posName[7] = '0' + lightsCount;
targetName[7] = '0' + lightsCount;
colorName[7] = '0' + lightsCount;
light.enabledLoc = GetShaderLocation(shader, enabledName);
light.typeLoc = GetShaderLocation(shader, typeName);
light.posLoc = GetShaderLocation(shader, posName);
light.targetLoc = GetShaderLocation(shader, targetName);
light.colorLoc = GetShaderLocation(shader, colorName);
UpdateLightValues(shader, light);
lightsCount++;
}
return light;
}
// Send to PBR shader light values
void UpdateLightValues(Shader shader, Light light)
{
// Send to shader light enabled state and type
SetShaderValuei(shader, light.enabledLoc, (int[1]){ light.enabled }, 1);
SetShaderValuei(shader, light.typeLoc, (int[1]){ light.type }, 1);
// Send to shader light position values
float position[3] = { light.position.x, light.position.y, light.position.z };
SetShaderValue(shader, light.posLoc, position, 3);
// Send to shader light target position values
float target[3] = { light.target.x, light.target.y, light.target.z };
SetShaderValue(shader, light.targetLoc, target, 3);
// Send to shader light color values
float diff[4] = { (float)light.color.r/(float)255, (float)light.color.g/(float)255, (float)light.color.b/(float)255, (float)light.color.a/(float)255 };
SetShaderValue(shader, light.colorLoc, diff, 4);
}
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