Vulcan Nightmare

Experimentally bringing up vulcan support

assets/shaders/character_shadow.vert.glsl

@@ -0,0 +1,27 @@
+#version 450
+
+layout(push_constant) uniform Push {
+    mat4 lightSpaceMatrix;
+    mat4 model;
+} push;
+
+layout(set = 2, binding = 0) readonly buffer BoneSSBO {
+    mat4 bones[];
+};
+
+layout(location = 0) in vec3 aPos;
+layout(location = 1) in vec4 aBoneWeights;
+layout(location = 2) in ivec4 aBoneIndices;
+layout(location = 3) in vec2 aTexCoord;
+
+layout(location = 0) out vec2 TexCoord;
+
+void main() {
+    mat4 skinMat = bones[aBoneIndices.x] * aBoneWeights.x
+                 + bones[aBoneIndices.y] * aBoneWeights.y
+                 + bones[aBoneIndices.z] * aBoneWeights.z
+                 + bones[aBoneIndices.w] * aBoneWeights.w;
+    vec4 skinnedPos = skinMat * vec4(aPos, 1.0);
+    TexCoord = aTexCoord;
+    gl_Position = push.lightSpaceMatrix * push.model * skinnedPos;
+}