From d9f9479694d8a4d74822a876516282329db5ea3d Mon Sep 17 00:00:00 2001
From: Omniscient <17525998+omnisci3nce@users.noreply.github.com>
Date: Sat, 6 Apr 2024 22:24:52 +1100
Subject: separate pipeline for skinned meshes

---
 assets/shaders/skinned.vert | 47 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 assets/shaders/skinned.vert

(limited to 'assets')

diff --git a/assets/shaders/skinned.vert b/assets/shaders/skinned.vert
new file mode 100644
index 0000000..3d0c2cd
--- /dev/null
+++ b/assets/shaders/skinned.vert
@@ -0,0 +1,47 @@
+#version 410 core
+// Inputs
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec3 inNormal;
+layout (location = 2) in vec2 inTexCoords;
+layout (location = 3) in ivec4 inBoneIndices;
+layout (location = 4) in vec4 inWeights;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+uniform mat4 lightSpaceMatrix;
+
+const int MAX_BONES = 100;
+const int MAX_BONE_INFLUENCES = 4;
+uniform mat4 finalBoneMatrices[MAX_BONES];
+
+// Output
+out VS_OUT {
+  vec3 FragPos;
+  vec3 Normal;
+  vec2 TexCoords;
+  vec4 FragPosLightSpace;
+} vs_out;
+
+void main() {
+  vec4 totalPosition = vec4(0.0f);
+  for(int i = 0 ; i < MAX_BONE_INFLUENCES ; i++) {
+      if(inBoneIndices[i] == -1) 
+          continue;
+      if(inBoneIndices[i] >=MAX_BONES) 
+      {
+          totalPosition = vec4(inPos,1.0f);
+          break;
+      }
+      vec4 localPosition = finalBoneMatrices[inBoneIndices[i]] * vec4(inPos,1.0f);
+      totalPosition += localPosition * inWeights[i];
+      vec3 localNormal = mat3(finalBoneMatrices[inBoneIndices[i]]) * inNormal;
+      vs_out.Normal = localNormal;
+  }
+
+  vs_out.FragPos = vec3(model * vec4(inPos, 1.0));
+  // vs_out.Normal = inNormal;
+  vs_out.TexCoords = inTexCoords;
+  vs_out.FragPosLightSpace = lightSpaceMatrix * vec4(vs_out.FragPos, 1.0);
+  gl_Position =  projection * view * model * totalPosition;
+}
\ No newline at end of file
-- 
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