From e4aab5c2ea1cf22b01569e8fc784ef874aa2f9d4 Mon Sep 17 00:00:00 2001
From: Erik Cowley <ecowley@protonmail.com>
Date: Mon, 9 Oct 2023 21:43:49 -0400
Subject: [PATCH] rename shaders to .glsl

---
 fragmentshader.glsl  | 57 ++++++++++++++++++++++++++++++++++++++++++++
 trailfragshader.glsl | 11 +++++++++
 trailshader.glsl     | 15 ++++++++++++
 vertexshader.glsl    | 18 ++++++++++++++
 4 files changed, 101 insertions(+)
 create mode 100644 fragmentshader.glsl
 create mode 100644 trailfragshader.glsl
 create mode 100644 trailshader.glsl
 create mode 100644 vertexshader.glsl

diff --git a/fragmentshader.glsl b/fragmentshader.glsl
new file mode 100644
index 0000000..fad8a30
--- /dev/null
+++ b/fragmentshader.glsl
@@ -0,0 +1,57 @@
+#version 460 core
+out vec4 FragColor;
+
+struct Material {
+    //sampler2D diffuse;
+    //sampler2D specular;
+    float shininess;
+    vec3 color;
+};
+
+struct Light {
+    vec3 position;
+    vec3 direction;
+    float largecutoff;
+    float smallcutoff;
+
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;
+};
+
+in vec3 FragPos;
+in vec3 Normal;
+
+uniform vec3 viewPos;
+uniform Material material;
+uniform Light light;
+
+void main()
+{
+    vec3 lightDir = normalize(light.position - FragPos);
+
+    // check if lighting is inside the spotlight cone
+    float theta = dot(lightDir, normalize(-light.direction));
+
+    float co = clamp((theta - light.largecutoff) / (light.smallcutoff - light.largecutoff), 0.0, 1.0);
+    // diffuse
+    vec3 norm = normalize(Normal);
+    float diff = max(dot(norm, lightDir), 0.0);
+    vec3 diffuse = light.diffuse * diff * material.color * co;
+
+    // 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.color * co;
+
+    // attenuation
+    float distance    = length(light.position - FragPos);
+    float atten = 1.0 / (1.0 + 0.1 * distance + 0.01 * (distance * distance));
+
+    diffuse  *= atten;
+    specular *= atten;
+
+    vec3 result = light.ambient + diffuse + specular;
+    FragColor = vec4(result, 1.0);
+}
diff --git a/trailfragshader.glsl b/trailfragshader.glsl
new file mode 100644
index 0000000..04feea4
--- /dev/null
+++ b/trailfragshader.glsl
@@ -0,0 +1,11 @@
+#version 460 core
+out vec4 FragColor;
+
+in vec3 FragPos;
+
+uniform vec3 objectcolor;
+
+void main()
+{
+    FragColor = vec4(objectcolor, 1.0);
+}
diff --git a/trailshader.glsl b/trailshader.glsl
new file mode 100644
index 0000000..9d7263f
--- /dev/null
+++ b/trailshader.glsl
@@ -0,0 +1,15 @@
+#version 460 core
+layout (location = 0) in vec3 aPos;
+
+out vec3 FragPos;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    FragPos = vec3(model * vec4(aPos, 1.0));
+
+    gl_Position = projection * view * vec4(FragPos, 1.0);
+}
diff --git a/vertexshader.glsl b/vertexshader.glsl
new file mode 100644
index 0000000..a228f1f
--- /dev/null
+++ b/vertexshader.glsl
@@ -0,0 +1,18 @@
+#version 460 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+
+out vec3 FragPos;
+out vec3 Normal;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    FragPos = vec3(model * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+
+    gl_Position = projection * view * vec4(FragPos, 1.0);
+}