quite a lot of changes that I, of course, are not going to describe;)

1 files changed, 36 insertions, 0 deletions

diff --git a/advanced_lighting/4.normal_mapping/shaders/normal_map.vert b/advanced_lighting/4.normal_mapping/shaders/normal_map.vert
new file mode 100644
index 0000000..3b089b5
--- /dev/null
+++ b/advanced_lighting/4.normal_mapping/shaders/normal_map.vert
@@ -0,0 +1,36 @@
+#version 330 core
+layout(location = 0) in vec3 apos;
+layout(location = 1) in vec3 anormal;
+layout(location = 2) in vec2 atex_coords;
+layout(location = 3) in vec3 atangent;
+layout(location = 4) in vec3 abitangent;
+
+out VS_OUT {
+    /* mat3 TBN; */
+    vec3 frag_pos;
+    vec3 tangent_light_pos;
+    vec3 tangent_view_pos;
+    vec3 tangent_frag_pos;
+    vec2 tex_coords;
+} vs_out;
+
+uniform mat4 proj;
+uniform mat4 view;
+uniform mat4 model;
+
+uniform vec3 light_pos;
+uniform vec3 view_pos;
+
+void main(void)
+{
+    vs_out.frag_pos = vec3(model * vec4(apos, 1.0));
+    vs_out.tex_coords = atex_coords;
+    vec3 T = normalize(vec3(model * vec4(atangent, 0.0)));
+    vec3 B = normalize(vec3(model * vec4(abitangent, 0.0)));
+    vec3 N = normalize(vec3(model * vec4(anormal, 0.0)));
+    mat3 TBN = transpose(mat3(T, B, N));
+    vs_out.tangent_light_pos = TBN * light_pos;
+    vs_out.tangent_view_pos = TBN * view_pos;
+    vs_out.tangent_frag_pos = TBN * vec3(model * vec4(apos, 0.0));
+    gl_Position = proj * view * vec4(vs_out.frag_pos, 1.0);
+}