initial commit (lol)

2 files changed, 53 insertions, 0 deletions

diff --git a/mons_exe/embed/shaders/basic.vert.glsl b/mons_exe/embed/shaders/basic.vert.glsl
new file mode 100644
index 0000000..8164120
--- /dev/null
+++ b/mons_exe/embed/shaders/basic.vert.glsl
@@ -0,0 +1,26 @@
+#version 460 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec4 aTangent;
+layout (location = 3) in vec2 aTexCoord;
+
+out vec3 Normal;
+out vec2 TexCoord;
+out vec3 FragPos;
+out mat3 TBN;
+
+uniform mat4 transform;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main() {
+    gl_Position = projection * view * transform * vec4(aPos, 1.0);
+    FragPos = vec3(transform * vec4(aPos, 1.0));
+    Normal = mat3(transpose(inverse(transform))) * aNormal;
+    TexCoord = aTexCoord;
+    
+    vec3 T = normalize(vec3(transform * vec4(aTangent.xyz, 0.0)));
+    vec3 N = normalize(vec3(transform * vec4(aNormal, 0.0)));
+    vec3 B = aTangent.w * cross(N, T);
+    TBN = mat3(T,B,N);
+}
diff --git a/mons_exe/embed/shaders/basic_lit.frag.glsl b/mons_exe/embed/shaders/basic_lit.frag.glsl
new file mode 100644
index 0000000..467174c
--- /dev/null
+++ b/mons_exe/embed/shaders/basic_lit.frag.glsl
@@ -0,0 +1,27 @@
+#version 460 core
+out vec4 FragColor;
+
+in vec3 Normal;
+in vec2 TexCoord;
+in vec3 FragPos;
+in mat3 TBN;
+
+uniform float ambient_strength;
+uniform sampler2D base_texture;
+uniform sampler2D normal_texture;
+
+uniform vec4 light_color;
+uniform vec3 light_position;
+
+void main() {
+    vec4 base_color = texture(base_texture, TexCoord);
+    vec3 normal = texture(normal_texture, TexCoord).rgb;
+    normal = normal * 2.0 - 1.0;
+    normal = normalize(TBN * normal);
+    vec3 light_direction = normalize(light_position - FragPos);
+    float diff = max(dot(normal, light_direction), 0.0);
+    vec4 diffuse_color = diff * light_color;
+    vec4 ambient_color = ambient_strength * light_color;
+
+    FragColor = (ambient_color + diffuse_color) * base_color;
+}