Vulcan Nightmare

Experimentally bringing up vulcan support

assets/shaders/shadow.vert.glsl

@@ -0,0 +1,45 @@
+#version 450
+
+layout(push_constant) uniform Push {
+    mat4 lightSpaceMatrix;
+    mat4 model;
+} push;
+
+layout(set = 2, binding = 0) readonly buffer BoneSSBO {
+    mat4 bones[];
+};
+
+layout(set = 1, binding = 1) uniform ShadowParams {
+    int useBones;
+    int useTexture;
+    int alphaTest;
+    int foliageSway;
+    float windTime;
+    float foliageMotionDamp;
+};
+
+layout(location = 0) in vec3 aPos;
+layout(location = 1) in vec2 aTexCoord;
+layout(location = 2) in vec4 aBoneWeights;
+layout(location = 3) in vec4 aBoneIndicesF;
+
+layout(location = 0) out vec2 TexCoord;
+layout(location = 1) out vec3 WorldPos;
+
+void main() {
+    vec4 pos = vec4(aPos, 1.0);
+
+    if (useBones != 0) {
+        ivec4 bi = ivec4(aBoneIndicesF);
+        mat4 skinMat = bones[bi.x] * aBoneWeights.x
+                     + bones[bi.y] * aBoneWeights.y
+                     + bones[bi.z] * aBoneWeights.z
+                     + bones[bi.w] * aBoneWeights.w;
+        pos = skinMat * pos;
+    }
+
+    vec4 worldPos = push.model * pos;
+    WorldPos = worldPos.xyz;
+    TexCoord = aTexCoord;
+    gl_Position = push.lightSpaceMatrix * worldPos;
+}