void
_vbo_DestroyContext(struct gl_context *ctx)
{
struct vbo_context *vbo = vbo_context(ctx);
if (ctx->aelt_context) {
_ae_destroy_context(ctx);
ctx->aelt_context = NULL;
}
if (vbo) {
GLuint i;
for (i = 0; i < VBO_ATTRIB_MAX; i++) {
_mesa_reference_buffer_object(ctx, &vbo->currval[i].BufferObj, NULL);
}
vbo_exec_destroy(ctx);
if (ctx->API == API_OPENGL_COMPAT)
vbo_save_destroy(ctx);
_mesa_reference_vao(ctx, &vbo->VAO, NULL);
free(vbo);
ctx->vbo_context = NULL;
}
}
/**
* Delete a set of array objects.
*
* \param n Number of array objects to delete.
* \param ids Array of \c n array object IDs.
*/
void GLAPIENTRY
_mesa_DeleteVertexArrays(GLsizei n, const GLuint *ids)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArray(n)");
return;
}
for (i = 0; i < n; i++) {
struct gl_vertex_array_object *obj = _mesa_lookup_vao(ctx, ids[i]);
if ( obj != NULL ) {
ASSERT( obj->Name == ids[i] );
/* If the array object is currently bound, the spec says "the binding
* for that object reverts to zero and the default vertex array
* becomes current."
*/
if ( obj == ctx->Array.VAO ) {
_mesa_BindVertexArray(0);
}
/* The ID is immediately freed for re-use */
remove_array_object(ctx, obj);
/* Unreference the array object.
* If refcount hits zero, the object will be deleted.
*/
_mesa_reference_vao(ctx, &obj, NULL);
}
}
}
/**
* Looks up the array object for the given ID.
*
* Unlike _mesa_lookup_vao, this function generates a GL_INVALID_OPERATION
* error if the array object does not exist. It also returns the default
* array object when ctx is a compatibility profile context and id is zero.
*/
struct gl_vertex_array_object *
_mesa_lookup_vao_err(struct gl_context *ctx, GLuint id, const char *caller)
{
/* The ARB_direct_state_access specification says:
*
* "<vaobj> is [compatibility profile:
* zero, indicating the default vertex array object, or]
* the name of the vertex array object."
*/
if (id == 0) {
if (ctx->API == API_OPENGL_CORE) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(zero is not valid vaobj name in a core profile "
"context)", caller);
return NULL;
}
return ctx->Array.DefaultVAO;
} else {
struct gl_vertex_array_object *vao;
if (ctx->Array.LastLookedUpVAO &&
ctx->Array.LastLookedUpVAO->Name == id) {
vao = ctx->Array.LastLookedUpVAO;
} else {
vao = (struct gl_vertex_array_object *)
_mesa_HashLookup(ctx->Array.Objects, id);
/* The ARB_direct_state_access specification says:
*
* "An INVALID_OPERATION error is generated if <vaobj> is not
* [compatibility profile: zero or] the name of an existing
* vertex array object."
*/
if (!vao || !vao->EverBound) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(non-existent vaobj=%u)", caller, id);
return NULL;
}
_mesa_reference_vao(ctx, &ctx->Array.LastLookedUpVAO, vao);
}
return vao;
}
}
void
_vbo_DestroyContext(struct gl_context *ctx)
{
struct vbo_context *vbo = vbo_context(ctx);
if (ctx->aelt_context) {
_ae_destroy_context(ctx);
ctx->aelt_context = NULL;
}
if (vbo) {
_mesa_reference_buffer_object(ctx, &vbo->binding.BufferObj, NULL);
vbo_exec_destroy(ctx);
if (ctx->API == API_OPENGL_COMPAT)
vbo_save_destroy(ctx);
_mesa_reference_vao(ctx, &vbo->VAO, NULL);
free(vbo);
ctx->vbo_context = NULL;
}
}
/**
* Helper for _mesa_BindVertexArray() and _mesa_BindVertexArrayAPPLE().
* \param genRequired specifies behavour when id was not generated with
* glGenVertexArrays().
*/
static void
bind_vertex_array(struct gl_context *ctx, GLuint id, GLboolean genRequired)
{
struct gl_vertex_array_object * const oldObj = ctx->Array.VAO;
struct gl_vertex_array_object *newObj = NULL;
assert(oldObj != NULL);
if ( oldObj->Name == id )
return; /* rebinding the same array object- no change */
/*
* Get pointer to new array object (newObj)
*/
if (id == 0) {
/* The spec says there is no array object named 0, but we use
* one internally because it simplifies things.
*/
newObj = ctx->Array.DefaultVAO;
}
else {
/* non-default array object */
newObj = _mesa_lookup_vao(ctx, id);
if (!newObj) {
if (genRequired) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindVertexArray(non-gen name)");
return;
}
/* For APPLE version, generate a new array object now */
newObj = _mesa_new_vao(ctx, id);
if (!newObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindVertexArrayAPPLE");
return;
}
save_array_object(ctx, newObj);
}
if (!newObj->EverBound) {
/* The "Interactions with APPLE_vertex_array_object" section of the
* GL_ARB_vertex_array_object spec says:
*
* "The first bind call, either BindVertexArray or
* BindVertexArrayAPPLE, determines the semantic of the object."
*/
newObj->ARBsemantics = genRequired;
newObj->EverBound = GL_TRUE;
}
}
if (ctx->Array.DrawMethod == DRAW_ARRAYS) {
/* The _DrawArrays pointer is pointing at the VAO being unbound and
* that VAO may be in the process of being deleted. If it's not going
* to be deleted, this will have no effect, because the pointer needs
* to be updated by the VBO module anyway.
*
* Before the VBO module can update the pointer, we have to set it
* to NULL for drivers not to set up arrays which are not bound,
* or to prevent a crash if the VAO being unbound is going to be
* deleted.
*/
ctx->Array._DrawArrays = NULL;
ctx->Array.DrawMethod = DRAW_NONE;
}
ctx->NewState |= _NEW_ARRAY;
_mesa_reference_vao(ctx, &ctx->Array.VAO, newObj);
}