#include "mtypes.h"
#include "varray.h"
#include "main/dispatch.h"
+#include "util/bitscan.h"
/**
/**
* Allocate and initialize a new vertex array object.
- *
- * This function is intended to be called via
*/
struct gl_vertex_array_object *
_mesa_new_vao(struct gl_context *ctx, GLuint name)
/**
* Delete an array object.
- *
- * This function is intended to be called via
- * \c dd_function_table::DeleteArrayObject.
*/
void
_mesa_delete_vao(struct gl_context *ctx, struct gl_vertex_array_object *obj)
GLbitfield64 arrays = vao->NewArrays;
while (arrays) {
+ const int attrib = u_bit_scan64(&arrays);
+
struct gl_client_array *client_array;
struct gl_vertex_attrib_array *attrib_array;
struct gl_vertex_buffer_binding *buffer_binding;
- GLint attrib = ffsll(arrays) - 1;
- arrays ^= BITFIELD64_BIT(attrib);
-
attrib_array = &vao->VertexAttrib[attrib];
buffer_binding = &vao->VertexBinding[attrib_array->VertexBinding];
client_array = &vao->_VertexAttrib[attrib];
}
+bool
+_mesa_all_varyings_in_vbos(const struct gl_vertex_array_object *vao)
+{
+ /* Walk those enabled arrays that have the default vbo attached */
+ GLbitfield64 mask = vao->_Enabled & ~vao->VertexAttribBufferMask;
+
+ while (mask) {
+ /* Do not use u_bit_scan64 as we can walk multiple
+ * attrib arrays at once
+ */
+ const int i = ffsll(mask) - 1;
+ const struct gl_vertex_attrib_array *attrib_array =
+ &vao->VertexAttrib[i];
+ const struct gl_vertex_buffer_binding *buffer_binding =
+ &vao->VertexBinding[attrib_array->VertexBinding];
+
+ /* Only enabled arrays shall appear in the _Enabled bitmask */
+ assert(attrib_array->Enabled);
+ /* We have already masked out vao->VertexAttribBufferMask */
+ assert(!_mesa_is_bufferobj(buffer_binding->BufferObj));
+
+ /* Bail out once we find the first non vbo with a non zero stride */
+ if (buffer_binding->Stride != 0)
+ return false;
+
+ /* Note that we cannot use the xor variant since the _BoundArray mask
+ * may contain array attributes that are bound but not enabled.
+ */
+ mask &= ~buffer_binding->_BoundArrays;
+ }
+
+ return true;
+}
+
+bool
+_mesa_all_buffers_are_unmapped(const struct gl_vertex_array_object *vao)
+{
+ /* Walk the enabled arrays that have a vbo attached */
+ GLbitfield64 mask = vao->_Enabled & vao->VertexAttribBufferMask;
+
+ while (mask) {
+ const int i = ffsll(mask) - 1;
+ const struct gl_vertex_attrib_array *attrib_array =
+ &vao->VertexAttrib[i];
+ const struct gl_vertex_buffer_binding *buffer_binding =
+ &vao->VertexBinding[attrib_array->VertexBinding];
+
+ /* Only enabled arrays shall appear in the _Enabled bitmask */
+ assert(attrib_array->Enabled);
+ /* We have already masked with vao->VertexAttribBufferMask */
+ assert(_mesa_is_bufferobj(buffer_binding->BufferObj));
+
+ /* Bail out once we find the first disallowed mapping */
+ if (_mesa_check_disallowed_mapping(buffer_binding->BufferObj))
+ return false;
+
+ /* We have handled everything that is bound to this buffer_binding. */
+ mask &= ~buffer_binding->_BoundArrays;
+ }
+
+ return true;
+}
+
/**********************************************************************/
/* API Functions */
/**********************************************************************/