Started working on gltf skinned vertex animation sample

Will replace the old assimp based skeletal animation sample

data/shaders/gltfskinning/mesh.frag

@@ -0,0 +1,28 @@
+#version 450
+
+layout (set = 1, binding = 0) uniform sampler2D samplerColorMap;
+
+layout (location = 0) in vec3 inNormal;
+layout (location = 1) in vec3 inColor;
+layout (location = 2) in vec2 inUV;
+layout (location = 3) in vec3 inViewVec;
+layout (location = 4) in vec3 inLightVec;
+
+layout (location = 5) in vec4 inColVis;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	vec4 color = texture(samplerColorMap, inUV) * vec4(inColor, 1.0);
+
+	vec3 N = normalize(inNormal);
+	vec3 L = normalize(inLightVec);
+	vec3 V = normalize(inViewVec);
+	vec3 R = reflect(-L, N);
+	vec3 diffuse = max(dot(N, L), 0.15) * inColor;
+	vec3 specular = pow(max(dot(R, V), 0.0), 16.0) * vec3(0.75);
+	outFragColor = vec4(diffuse * color.rgb + specular, 1.0);		
+
+//	outFragColor = inColVis;
+}

data/shaders/gltfskinning/mesh.vert

@@ -0,0 +1,55 @@
+#version 450
+
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec3 inNormal;
+layout (location = 2) in vec2 inUV;
+layout (location = 3) in vec3 inColor;
+layout (location = 4) in vec4 inJointIndices;
+layout (location = 5) in vec4 inJointWeights;
+
+layout (set = 0, binding = 0) uniform UBOScene
+{
+	mat4 projection;
+	mat4 view;
+	vec4 lightPos;
+} uboScene;
+
+layout(push_constant) uniform PushConsts {
+	mat4 model;
+} primitive;
+
+layout(std430, set = 2, binding = 0) readonly buffer JointMatrices {
+	mat4 jointMatrices[];
+};
+
+layout (location = 0) out vec3 outNormal;
+layout (location = 1) out vec3 outColor;
+layout (location = 2) out vec2 outUV;
+layout (location = 3) out vec3 outViewVec;
+layout (location = 4) out vec3 outLightVec;
+
+layout (location = 5) out vec4 outColVis;
+
+void main() 
+{
+	outNormal = inNormal;
+	outColor = inColor;
+	outUV = inUV;
+
+	// Calculated skinned matrix from vertice's weights and joint indices
+	mat4 skinMat = 
+		inJointWeights.x * jointMatrices[int(inJointIndices.x)] +
+		inJointWeights.y * jointMatrices[int(inJointIndices.y)] +
+		inJointWeights.z * jointMatrices[int(inJointIndices.z)] +
+		inJointWeights.w * jointMatrices[int(inJointIndices.w)];
+
+	gl_Position = uboScene.projection * uboScene.view * primitive.model * skinMat * vec4(inPos.xyz, 1.0);
+	
+	vec4 pos = uboScene.view * vec4(inPos, 1.0);
+	outNormal = mat3(uboScene.view) * inNormal;
+	vec3 lPos = mat3(uboScene.view) * uboScene.lightPos.xyz;
+	outLightVec = lPos - pos.xyz;
+	outViewVec = -pos.xyz;
+
+	outColVis = inJointWeights;
+}

examples/CMakeLists.txt

@@ -65,6 +65,7 @@ set(EXAMPLES
 	gears
 	geometryshader
 	gltfscene
+	gltfskinning
 	hdr
 	imgui
 	indirectdraw