static GLboolean
nouveau_bufferobj_data(struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
const GLvoid *data, GLenum usage,
struct gl_buffer_object *obj)
{
struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
int ret;
obj->Size = size;
obj->Usage = usage;
/* Free previous storage */
nouveau_bo_ref(NULL, &nbo->bo);
FREE(nbo->sys);
if (target == GL_ELEMENT_ARRAY_BUFFER_ARB ||
(size < 512 && usage == GL_DYNAMIC_DRAW_ARB) ||
context_chipset(ctx) < 0x10) {
/* Heuristic: keep it in system ram */
nbo->sys = MALLOC(size);
} else {
/* Get a hardware BO */
ret = nouveau_bo_new(context_dev(ctx),
NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0,
size, &nbo->bo);
assert(!ret);
}
if (data)
memcpy(get_bufferobj_map(obj, NOUVEAU_BO_WR), data, size);
return GL_TRUE;
}
static void
nouveau_bufferobj_get_subdata(struct gl_context *ctx, GLintptrARB offset,
GLsizeiptrARB size, GLvoid *data,
struct gl_buffer_object *obj)
{
memcpy(data, get_bufferobj_map(obj, NOUVEAU_BO_RD) + offset, size);
}
static void *
nouveau_bufferobj_map_range(struct gl_context *ctx, GLintptr offset,
GLsizeiptr length, GLbitfield access,
struct gl_buffer_object *obj)
{
unsigned flags = 0;
char *map;
assert(!obj->Pointer);
if (access & GL_MAP_READ_BIT)
flags |= NOUVEAU_BO_RD;
if (access & GL_MAP_WRITE_BIT)
flags |= NOUVEAU_BO_WR;
if (access & GL_MAP_UNSYNCHRONIZED_BIT)
flags |= NOUVEAU_BO_NOSYNC;
map = get_bufferobj_map(obj, flags);
if (!map)
return NULL;
obj->Pointer = map + offset;
obj->Offset = offset;
obj->Length = length;
obj->AccessFlags = access;
return obj->Pointer;
}
static void
nouveau_bufferobj_subdata(struct gl_context *ctx, GLintptrARB offset,
GLsizeiptrARB size, const GLvoid *data,
struct gl_buffer_object *obj)
{
memcpy(get_bufferobj_map(ctx, obj, NOUVEAU_BO_WR) + offset, data, size);
}
