Remove usage of VAO, which does not work in GLES2

drivers/gles2/rasterizer_canvas_gles2.cpp

@@ -1368,14 +1368,19 @@ void RasterizerCanvasGLES2::canvas_light_shadow_buffer_update(RID p_buffer, cons
 				}
 			}
 
-			glBindVertexArray(cc->array_id);
+			glBindBuffer(GL_ARRAY_BUFFER, cc->vertex_id);
+			glEnableVertexAttribArray(VS::ARRAY_VERTEX);
+			glVertexAttribPointer(VS::ARRAY_VERTEX, 3, GL_FLOAT, false, 0, 0);
+			glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cc->index_id);
+
 			glDrawElements(GL_TRIANGLES, cc->len * 3, GL_UNSIGNED_SHORT, 0);
 
 			instance = instance->next;
 		}
 	}
 
-	glBindVertexArray(0);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 }
 void RasterizerCanvasGLES2::reset_canvas() {
 

drivers/gles2/rasterizer_storage_gles2.cpp

@@ -4247,7 +4247,6 @@ RID RasterizerStorageGLES2::canvas_light_occluder_create() {
 	co->index_id = 0;
 	co->vertex_id = 0;
 	co->len = 0;
-	glGenVertexArrays(1, &co->array_id);
 
 	return canvas_occluder_owner.make_rid(co);
 }
@@ -4342,12 +4341,6 @@ void RasterizerStorageGLES2::canvas_light_occluder_set_polylines(RID p_occluder,
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); //unbind
 
 		co->len = lc;
-		glBindVertexArray(co->array_id);
-		glBindBuffer(GL_ARRAY_BUFFER, co->vertex_id);
-		glEnableVertexAttribArray(VS::ARRAY_VERTEX);
-		glVertexAttribPointer(VS::ARRAY_VERTEX, 3, GL_FLOAT, false, 0, 0);
-		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, co->index_id);
-		glBindVertexArray(0);
 	}
 }
 
@@ -4570,8 +4563,6 @@ bool RasterizerStorageGLES2::free(RID p_rid) {
 		if (co->vertex_id)
 			glDeleteBuffers(1, &co->vertex_id);
 
-		glDeleteVertexArrays(1, &co->array_id);
-
 		canvas_occluder_owner.free(p_rid);
 		memdelete(co);
 

drivers/gles2/rasterizer_storage_gles2.h

@@ -1179,7 +1179,6 @@ public:
 
 	struct CanvasOccluder : public RID_Data {
 
-		GLuint array_id; // 0 means, unconfigured
 		GLuint vertex_id; // 0 means, unconfigured
 		GLuint index_id; // 0 means, unconfigured
 		PoolVector<Vector2> lines;