From bd57f345ed9dbed1d81683e48199626de2ea9044 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Fri, 27 Jun 2025 10:18:39 -0700
Subject: Restructure project

---
 shaders/cook_torrance.vert | 75 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 shaders/cook_torrance.vert

(limited to 'shaders/cook_torrance.vert')

diff --git a/shaders/cook_torrance.vert b/shaders/cook_torrance.vert
new file mode 100644
index 0000000..5f126c0
--- /dev/null
+++ b/shaders/cook_torrance.vert
@@ -0,0 +1,75 @@
+precision highp float;
+
+uniform mat4 ModelMatrix;
+// uniform mat4 Modelview;
+uniform mat4 View;
+uniform mat4 Projection;
+//uniform mat4 MVP;
+#ifdef HAS_JOINTS
+// The client should pass in an appropriate value for MAX_JOINTS.
+// #define MAX_JOINTS 96
+//
+// matnxm -- n columns and m rows, different convention from math.
+// We don't need the last row of [0, 0, 0, 1], so drop it to pack the matrices
+// as tightly as possible.
+// 256 joints * 4x4 matrix * 4 bytes/float = 16.0KB
+// 256 joints * 4x3 matrix * 4 bytes/float = 12.0KB
+//  96 joints * 4x4 matrix * 4 bytes/float =  6.0KB
+//  96 joints * 4x3 matrix * 4 bytes/float =  4.5KB
+//uniform mat4x3 Joints[MAX_JOINTS];
+uniform mat4 JointMatrices[MAX_JOINTS]; // Use 4x4 for now to keep it simple.
+#endif
+
+layout (location = 0) in vec3 vPosition;
+#ifdef HAS_NORMALS
+layout (location = 1) in vec3 vNormal;
+#endif
+#ifdef HAS_TANGENTS
+layout (location = 2) in vec4 vTangent;
+#endif
+#ifdef HAS_TEXCOORDS
+layout (location = 3) in vec2 vTexcoord;
+#endif
+#ifdef HAS_JOINTS
+layout (location = 4) in uvec4 vJoint;
+layout (location = 5) in vec4  vWeight;
+#endif
+
+// World-space position, normal and tangent.
+out vec3 Position;
+#ifdef HAS_NORMALS
+out vec3 Normal;
+#endif
+#ifdef HAS_TANGENTS
+out vec4 Tangent;
+#endif
+#ifdef HAS_TEXCOORDS
+out vec2 Texcoord;
+#endif
+
+void main()
+{
+#ifdef HAS_JOINTS
+  mat4 skinMatrix =
+    vWeight.x * JointMatrices[vJoint.x] +
+    vWeight.y * JointMatrices[vJoint.y] +
+    vWeight.z * JointMatrices[vJoint.z] +
+    vWeight.w * JointMatrices[vJoint.w];
+  Position = vec3(ModelMatrix * skinMatrix * vec4(vPosition, 1.0));
+#else
+  Position = vec3(ModelMatrix * vec4(vPosition, 1.0));
+#endif
+#ifdef HAS_NORMALS
+  Normal = mat3(ModelMatrix) * vNormal;
+  //Normal = normalize(ModelMatrix * vec4(vNormal, 0.0)).xyz;
+#endif
+#ifdef HAS_TANGENTS
+  Tangent = vec4(mat3(ModelMatrix) * vTangent.xyz, vTangent.w);
+#endif
+#ifdef HAS_TEXCOORDS
+  Texcoord = vTexcoord;
+#endif
+  gl_Position = Projection * View * vec4(Position, 1.0);
+  //gl_Position = Projection * vec4(Position, 1.0);
+  //gl_Position = MVP * vec4(vPosition, 1.0);
+}
-- 
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