Day8: Assimp+Basic Lights+Asserts+vert normals&colors

res/shaders/simple.frag.glsl

@@ -1,14 +1,23 @@
 #version 410
 
-in vec3 outColor;
+in vec3 vertColor;
+in vec3 vertNormal;
+in vec3 fragPos;
 
 out vec4 fragColor;
 
-uniform vec3 ambientLightColor = vec3(1, 0, 0);
 uniform float ambientStrength = 1;
+uniform vec3 ambientLightColor = vec3(1, 1, 1);
+
+uniform vec3 lightPos1;
+uniform vec3 lightColor1;
 
 void main()
 {
-    vec3 objColor = vec3(1, 1, 1);
-    fragColor = vec4(objColor * ambientLightColor * ambientStrength, 1.0);
+    // vec3 norm = normalize(Normal);
+    vec3 lightDir = normalize(lightPos1 - fragPos);  
+    float diffStrength = max(0.0, dot(normalize(vertNormal), lightDir));
+
+    vec3 finalAmbientColor = ambientLightColor * ambientStrength;
+    fragColor = vec4(vertColor * (finalAmbientColor + diffStrength*lightColor1), 1.0);
 } 

res/shaders/simple.vert.glsl

@@ -1,9 +1,12 @@
 #version 410
 
-in vec3 vertPos;
-in vec3 vertColor;
+in vec3 vertPosIn;
+in vec3 vertColorIn;
+in vec3 vertNormalIn;
 
-out vec3 outColor;
+out vec3 vertColor;
+out vec3 vertNormal;
+out vec3 fragPos;
 
 //MVP = Model View Projection
 uniform mat4 modelMat;
@@ -12,6 +15,9 @@ uniform mat4 projMat;
 
 void main()
 {
-    outColor = vertColor;
-    gl_Position = projMat * viewMat * modelMat * (vec4(vertPos, 1.0)); // vec4(vertPos.x, vertPos.y, vertPos.z, 1.0)
+    vertColor = vertColorIn;
+    vertNormal = vertNormalIn;
+    fragPos = vec3(modelMat * vec4(vertPosIn, 1.0));
+
+    gl_Position = projMat * viewMat * modelMat * vec4(vertPosIn, 1.0);
 }