Added rlglDraw() to SetShaderValueV()

Usually if you update shader values, they will only take effect when starting a new shader mode because that's when the draw function is called. By calling it when changing shader values, you ensure the changes take place instantly. This makes it way simpler to do palette swapping and other "dynamic" shader functions.

src/rlgl.h

@@ -3093,6 +3093,8 @@ void SetShaderValueV(Shader shader, int uniformLoc, const void *value, int unifo
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glUseProgram(shader.id);
     
+    rlglDraw(); // Force draw
+    
     switch (uniformType)
     {
         case UNIFORM_FLOAT: glUniform1fv(uniformLoc, count, (float *)value); break;