/* Called only when buffers are wrapped as the result of filling the
* vertex_store struct.
*/
static void _save_wrap_filled_vertex( GLcontext *ctx )
{
struct vbo_save_context *save = &vbo_context(ctx)->save;
GLfloat *data = save->copied.buffer;
GLuint i;
/* Emit a glEnd to close off the last vertex list.
*/
_save_wrap_buffers( ctx );
/* Copy stored stored vertices to start of new list.
*/
assert(save->max_vert - save->vert_count > save->copied.nr);
for (i = 0 ; i < save->copied.nr ; i++) {
_mesa_memcpy( save->vbptr, data, save->vertex_size * sizeof(GLfloat));
data += save->vertex_size;
save->vbptr += save->vertex_size;
save->vert_count++;
}
}
/* Called only when buffers are wrapped as the result of filling the
* vertex_store struct.
*/
static void _save_wrap_filled_vertex( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
GLfloat *data = tnl->save.copied.buffer;
GLuint i;
/* Emit a glEnd to close off the last vertex list.
*/
_save_wrap_buffers( ctx );
/* Copy stored stored vertices to start of new list.
*/
assert(tnl->save.counter > tnl->save.copied.nr);
for (i = 0 ; i < tnl->save.copied.nr ; i++) {
_mesa_memcpy( tnl->save.vbptr, data, tnl->save.vertex_size * sizeof(GLfloat));
data += tnl->save.vertex_size;
tnl->save.vbptr += tnl->save.vertex_size;
tnl->save.counter--;
}
}
/* Flush existing data, set new attrib size, replay copied vertices.
*/
static void _save_upgrade_vertex( GLcontext *ctx,
GLuint attr,
GLuint newsz )
{
struct vbo_save_context *save = &vbo_context(ctx)->save;
GLuint oldsz;
GLuint i;
GLfloat *tmp;
/* Store the current run of vertices, and emit a GL_END. Emit a
* BEGIN in the new buffer.
*/
if (save->vert_count)
_save_wrap_buffers( ctx );
else
assert( save->copied.nr == 0 );
/* Do a COPY_TO_CURRENT to ensure back-copying works for the case
* when the attribute already exists in the vertex and is having
* its size increased.
*/
_save_copy_to_current( ctx );
/* Fix up sizes:
*/
oldsz = save->attrsz[attr];
save->attrsz[attr] = newsz;
save->vertex_size += newsz - oldsz;
save->max_vert = ((VBO_SAVE_BUFFER_SIZE - save->vertex_store->used) /
save->vertex_size);
save->vert_count = 0;
/* Recalculate all the attrptr[] values:
*/
for (i = 0, tmp = save->vertex ; i < VBO_ATTRIB_MAX ; i++) {
if (save->attrsz[i]) {
save->attrptr[i] = tmp;
tmp += save->attrsz[i];
}
else
save->attrptr[i] = NULL; /* will not be dereferenced. */
}
/* Copy from current to repopulate the vertex with correct values.
*/
_save_copy_from_current( ctx );
/* Replay stored vertices to translate them to new format here.
*
* If there are copied vertices and the new (upgraded) attribute
* has not been defined before, this list is somewhat degenerate,
* and will need fixup at runtime.
*/
if (save->copied.nr)
{
GLfloat *data = save->copied.buffer;
GLfloat *dest = save->buffer;
GLuint j;
/* Need to note this and fix up at runtime (or loopback):
*/
if (attr != VBO_ATTRIB_POS && save->currentsz[attr][0] == 0) {
assert(oldsz == 0);
save->dangling_attr_ref = GL_TRUE;
}
for (i = 0 ; i < save->copied.nr ; i++) {
for (j = 0 ; j < VBO_ATTRIB_MAX ; j++) {
if (save->attrsz[j]) {
if (j == attr) {
if (oldsz) {
COPY_CLEAN_4V( dest, oldsz, data );
data += oldsz;
dest += newsz;
}
else {
COPY_SZ_4V( dest, newsz, save->current[attr] );
dest += newsz;
}
}
else {
GLint sz = save->attrsz[j];
COPY_SZ_4V( dest, sz, data );
data += sz;
dest += sz;
}
}
}
}
save->vbptr = dest;
save->vert_count += save->copied.nr;
}
}
/* Flush existing data, set new attrib size, replay copied vertices.
*/
static void _save_upgrade_vertex( GLcontext *ctx,
GLuint attr,
GLuint newsz )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
GLuint oldsz;
GLuint i;
GLfloat *tmp;
/* Store the current run of vertices, and emit a GL_END. Emit a
* BEGIN in the new buffer.
*/
if (tnl->save.initial_counter != tnl->save.counter)
_save_wrap_buffers( ctx );
else
assert( tnl->save.copied.nr == 0 );
/* Do a COPY_TO_CURRENT to ensure back-copying works for the case
* when the attribute already exists in the vertex and is having
* its size increased.
*/
_save_copy_to_current( ctx );
/* Fix up sizes:
*/
oldsz = tnl->save.attrsz[attr];
tnl->save.attrsz[attr] = newsz;
tnl->save.vertex_size += newsz - oldsz;
tnl->save.counter = ((SAVE_BUFFER_SIZE - tnl->save.vertex_store->used) /
tnl->save.vertex_size);
if (tnl->save.counter > ctx->Const.MaxArrayLockSize )
tnl->save.counter = ctx->Const.MaxArrayLockSize;
tnl->save.initial_counter = tnl->save.counter;
/* Recalculate all the attrptr[] values:
*/
for (i = 0, tmp = tnl->save.vertex ; i < _TNL_ATTRIB_MAX ; i++) {
if (tnl->save.attrsz[i]) {
tnl->save.attrptr[i] = tmp;
tmp += tnl->save.attrsz[i];
}
else
tnl->save.attrptr[i] = 0; /* will not be dereferenced. */
}
/* Copy from current to repopulate the vertex with correct values.
*/
_save_copy_from_current( ctx );
/* Replay stored vertices to translate them to new format here.
*
* If there are copied vertices and the new (upgraded) attribute
* has not been defined before, this list is somewhat degenerate,
* and will need fixup at runtime.
*/
if (tnl->save.copied.nr)
{
GLfloat *data = tnl->save.copied.buffer;
GLfloat *dest = tnl->save.buffer;
GLuint j;
/* Need to note this and fix up at runtime (or loopback):
*/
if (tnl->save.currentsz[attr][0] == 0) {
assert(oldsz == 0);
tnl->save.dangling_attr_ref = GL_TRUE;
_mesa_debug(0, "_save_upgrade_vertex: dangling reference attr %d\n",
attr);
#if 0
/* The current strategy is to punt these degenerate cases
* through _tnl_loopback_vertex_list(), a lower-performance
* option. To minimize the impact of this, artificially
* reduce the size of this vertex_list.
*/
if (t->save.counter > 10) {
t->save.initial_counter = 10;
t->save.counter = 10;
}
#endif
}
for (i = 0 ; i < tnl->save.copied.nr ; i++) {
for (j = 0 ; j < _TNL_ATTRIB_MAX ; j++) {
if (tnl->save.attrsz[j]) {
if (j == attr) {
if (oldsz) {
ASSIGN_4V( dest, 0, 0, 0, 1 );
COPY_SZ_4V( dest, oldsz, data );
data += oldsz;
dest += newsz;
}
else {
COPY_SZ_4V( dest, newsz, tnl->save.current[attr] );
dest += newsz;
}
}
else {
GLint sz = tnl->save.attrsz[j];
COPY_SZ_4V( dest, sz, data );
data += sz;
dest += sz;
}
}
}
}
tnl->save.vbptr = dest;
tnl->save.counter -= tnl->save.copied.nr;
}
}