From 86c7bdee944ce2f60d63124e9ddb76198ddbc676 Mon Sep 17 00:00:00 2001
From: jvech <jmvalenciae@unal.edu.co>
Date: Sun, 11 Sep 2022 13:54:51 -0500
Subject: learn: 14. Materials learnopengl book

---
 shaders/color.fsh       | 44 ++++++++++++++++++++++++++++++++++++++++++++
 shaders/color.vsh       | 17 +++++++++++++++++
 shaders/fragment.fsh    |  9 ---------
 shaders/lightsource.fsh |  7 +++++++
 shaders/lightsource.vsh | 10 ++++++++++
 shaders/vertex.vsh      | 13 -------------
 6 files changed, 78 insertions(+), 22 deletions(-)
 create mode 100644 shaders/color.fsh
 create mode 100644 shaders/color.vsh
 delete mode 100644 shaders/fragment.fsh
 create mode 100644 shaders/lightsource.fsh
 create mode 100644 shaders/lightsource.vsh
 delete mode 100644 shaders/vertex.vsh

(limited to 'shaders')

diff --git a/shaders/color.fsh b/shaders/color.fsh
new file mode 100644
index 0000000..4989d73
--- /dev/null
+++ b/shaders/color.fsh
@@ -0,0 +1,44 @@
+# version 330 core
+
+struct Material {
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;
+    float shininess;
+};
+
+struct Light {
+    vec3 position;
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;
+};
+
+in vec3 Normal;
+in vec3 FragPos;
+
+out vec4 FragColor;
+
+uniform vec3 viewPos;
+uniform Material material;
+uniform Light light;
+
+void main()
+{
+    // ambient
+    vec3 ambient = material.ambient * light.ambient;
+    
+    // diffuse
+    vec3 norm = normalize(Normal);
+    vec3 lightDir = normalize(light.position - FragPos);
+    float diff = max(dot(norm, lightDir), 0.0);
+    vec3 diffuse = light.diffuse * diff * material.diffuse;
+
+    // specular
+    vec3 viewDir = normalize(viewPos - FragPos);
+    vec3 reflectDir = reflect(-lightDir, norm);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+    vec3 specular = light.specular * spec * material.specular;
+
+    FragColor = vec4((specular + ambient + diffuse), 1.0f);
+}
diff --git a/shaders/color.vsh b/shaders/color.vsh
new file mode 100644
index 0000000..ff878be
--- /dev/null
+++ b/shaders/color.vsh
@@ -0,0 +1,17 @@
+# version 330 core
+
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+
+uniform mat4 model, view, proj;
+uniform mat4 rotNormals;
+
+out vec3 FragPos;
+out vec3 Normal;
+
+void main()
+{
+    gl_Position = proj * view * model * vec4(aPos, 1.0f);
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = vec3(rotNormals * vec4(aNormal, 1.0));
+}
diff --git a/shaders/fragment.fsh b/shaders/fragment.fsh
deleted file mode 100644
index 2d87daa..0000000
--- a/shaders/fragment.fsh
+++ /dev/null
@@ -1,9 +0,0 @@
-# version 330 core
-
-in vec3 vertexColor;
-out vec4 FragColor;
-
-void main()
-{
-    FragColor = vec4(vertexColor, 0.0f);
-}
diff --git a/shaders/lightsource.fsh b/shaders/lightsource.fsh
new file mode 100644
index 0000000..1bd96c6
--- /dev/null
+++ b/shaders/lightsource.fsh
@@ -0,0 +1,7 @@
+#version 330 core
+out vec4 FragColor;
+
+void main()
+{
+    FragColor = vec4(1.0);
+}
diff --git a/shaders/lightsource.vsh b/shaders/lightsource.vsh
new file mode 100644
index 0000000..3525c32
--- /dev/null
+++ b/shaders/lightsource.vsh
@@ -0,0 +1,10 @@
+# version 330 core
+
+layout (location = 0) in vec3 aPos;
+uniform mat4 model, view, proj;
+
+
+void main()
+{
+    gl_Position = proj * view * model * vec4(aPos, 1.0f);
+}
diff --git a/shaders/vertex.vsh b/shaders/vertex.vsh
deleted file mode 100644
index 987dc3b..0000000
--- a/shaders/vertex.vsh
+++ /dev/null
@@ -1,13 +0,0 @@
-# version 330 core
-
-layout (location = 0) in vec3 aPos;
-layout (location = 1) in vec3 aColor;
-uniform mat4 model, view, proj;
-
-out vec3 vertexColor;
-
-void main()
-{
-    gl_Position = proj * view * model * vec4(aPos, 1.0f);
-    vertexColor = aColor;
-}
-- 
cgit v1.2.3-70-g09d2