初始化内容

shader/csm.vert

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+#version 450
+
+// 级联级数，创建管线时可覆盖
+layout(constant_id = 0) const int SHADOW_MAP_CASCADE_COUNT = 4;
+
+#ifdef BONE
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in vec2 inUV0;
+layout(location = 2) in vec2 inUV1;
+layout(location = 3) in vec3 inNormal;
+layout(location = 4) in vec3 inTangent;
+layout(location = 5) in vec3 boneWeight;
+layout(location = 6) in uvec4 boneIndex;
+layout(location = 7) in vec4 inColor;
+#else
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in vec2 inUV0;
+layout(location = 2) in vec2 inUV1;
+layout(location = 3) in vec3 inNormal;
+layout(location = 4) in vec3 inTangent;
+layout(location = 5) in vec4 inColor;
+#endif
+
+
+layout (push_constant) uniform PushConstant
+{
+    mat4 model;
+	uint cascadeIndex;
+} constant;
+
+#ifdef BONE
+layout (set = 2, binding = 0) uniform UniformBufferBone
+{
+    mat4 trans[256];
+} bone;
+#endif
+
+// 注意与标准的位置不一样
+layout (set = 0, binding = 0) uniform UniformBufferCascade
+{
+	mat4 viewProj[SHADOW_MAP_CASCADE_COUNT];
+} cascade;
+
+layout (location = 0) out vec2 outUV;
+
+void main()
+{
+#ifdef BONE
+	vec4 weights;
+	weights.x = boneWeight.x;
+	weights.y = boneWeight.y;
+	weights.z = boneWeight.z;
+	weights.w = 1.0 - weights.x - weights.y - weights.z;
+	
+	vec3 posL = vec3(0, 0, 0);
+	posL = weights[0] * (bone.trans[boneIndex[0]] * vec4(inPosition,1)).xyz
+		+ weights[1] * (bone.trans[boneIndex[1]] * vec4(inPosition,1)).xyz
+		+ weights[2] * (bone.trans[boneIndex[2]] * vec4(inPosition,1)).xyz
+		+ weights[3] * (bone.trans[boneIndex[3]] * vec4(inPosition,1)).xyz;
+#else
+	vec3 posL = inPosition;
+#endif
+
+	outUV = inUV0;
+
+	vec4 pos = constant.model * vec4(posL, 1.0);
+	gl_Position = cascade.viewProj[constant.cascadeIndex] * pos;
+}