pass data (xyz, uv) with 1 buffer to shader,

bugs:
2 triangles are not painted, one is wrong positioned

MshViewer/Shader/VertexTextureShader.mv2shdr

@@ -3,6 +3,7 @@
 // Input vertex data, different for all executions of this shader.
 layout(location = 0) in vec3 vertexPosition_modelspace;
 layout(location = 1) in vec2 vertexUV;
+//layout(location = 2) in mat4 mvp;
 
 // Output
 out vec2 UV;