fixed a few compile error.

inc/hgl/graph/mtl/UBOCommon.h

@@ -0,0 +1,62 @@
+#pragma once
+
+#include<hgl/graph/mtl/StdMaterial.h>
+#include<hgl/graph/mtl/ShaderBuffer.h>
+
+STD_MTL_NAMESPACE_BEGIN
+constexpr const ShaderBufferSource SBS_ViewportInfo=
+{
+    "ViewportInfo",
+    "viewport",
+
+    R"(
+mat4 ortho_matrix;
+
+vec2 canvas_resolution;
+vec2 viewport_resolution;
+vec2 inv_viewport_resolution;
+)"
+};
+
+constexpr const ShaderBufferSource SBS_CameraInfo=
+{
+    "CameraInfo",
+    "camera",
+
+    R"(
+mat4 projection;
+mat4 inverse_projection;
+
+mat4 view;
+mat4 inverse_view;
+
+mat4 vp;
+mat4 inverse_vp;
+
+mat4 sky;
+
+vec3 pos;                   //eye
+vec3 view_line;             //pos-target
+vec3 world_up;
+
+float znear,zfar;)"
+};
+
+constexpr const ShaderBufferSource SBS_MaterialInstance=
+{
+    "MaterialInstanceData",
+    "mtl",
+
+    "MaterialInstance mi[256];"
+};
+
+constexpr const ShaderBufferSource SBS_JointInfo=
+{
+    "JointInfo",
+    "joint",
+
+R"(
+    mat4 mats[];
+)"
+};
+STD_MTL_NAMESPACE_END