CoglBuffer *
_cogl_buffer_immutable_ref (CoglBuffer *buffer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), NULL);
buffer->immutable_ref++;
return buffer;
}
void
_cogl_buffer_immutable_unref (CoglBuffer *buffer)
{
_COGL_RETURN_IF_FAIL (cogl_is_buffer (buffer));
_COGL_RETURN_IF_FAIL (buffer->immutable_ref > 0);
buffer->immutable_ref--;
}
CoglBufferUpdateHint
cogl_buffer_get_update_hint (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return FALSE;
return buffer->update_hint;
}
unsigned int
cogl_buffer_get_size (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return 0;
return COGL_BUFFER (buffer)->size;
}
void *
cogl_buffer_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints,
CoglError **error)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), NULL);
return cogl_buffer_map_range (buffer, 0, buffer->size, access, hints, error);
}
CoglHandle
cogl_texture_new_from_buffer_EXP (CoglHandle buffer,
unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat format,
CoglPixelFormat internal_format,
unsigned int rowstride,
const unsigned int offset)
{
CoglHandle texture;
CoglBuffer *cogl_buffer;
CoglPixelArray *pixel_array;
CoglBitmap *bmp;
g_return_val_if_fail (cogl_is_buffer (buffer), COGL_INVALID_HANDLE);
if (format == COGL_PIXEL_FORMAT_ANY)
return COGL_INVALID_HANDLE;
cogl_buffer = COGL_BUFFER (buffer);
pixel_array = COGL_PIXEL_ARRAY (buffer);
/* Rowstride from CoglBuffer or even width * bpp if not given */
if (rowstride == 0)
rowstride = pixel_array->stride;
if (rowstride == 0)
rowstride = width * _cogl_get_format_bpp (format);
/* use the CoglBuffer height and width as last resort */
if (width == 0)
width = pixel_array->width;
if (height == 0)
height = pixel_array->height;
if (width == 0 || height == 0)
{
/* no width or height specified, neither at creation time (because the
* array was created by cogl_pixel_array_new()) nor when calling this
* function */
return COGL_INVALID_HANDLE;
}
/* Wrap the buffer into a bitmap */
bmp = _cogl_bitmap_new_from_buffer (cogl_buffer,
format,
width, height,
rowstride,
offset);
texture = cogl_texture_new_from_bitmap (bmp, flags, internal_format);
cogl_object_unref (bmp);
return texture;
}
void
cogl_buffer_unmap (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return;
if (!(buffer->flags & COGL_BUFFER_FLAG_MAPPED))
return;
buffer->vtable.unmap (buffer);
}
void
cogl_buffer_set_update_hint (CoglBuffer *buffer,
CoglBufferUpdateHint hint)
{
if (!cogl_is_buffer (buffer))
return;
if (G_UNLIKELY (hint > COGL_BUFFER_UPDATE_HINT_STREAM))
hint = COGL_BUFFER_UPDATE_HINT_STATIC;
buffer->update_hint = hint;
}
CoglBool
cogl_buffer_set_data (CoglBuffer *buffer,
size_t offset,
const void *data,
size_t size)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), FALSE);
_COGL_RETURN_VAL_IF_FAIL ((offset + size) <= buffer->size, FALSE);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
return buffer->vtable.set_data (buffer, offset, data, size);
}
void *
cogl_buffer_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), NULL);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
if (buffer->flags & COGL_BUFFER_FLAG_MAPPED)
return buffer->data;
buffer->data = buffer->vtable.map (buffer, access, hints);
return buffer->data;
}
CoglBitmap *
cogl_bitmap_new_from_buffer (CoglBuffer *buffer,
CoglPixelFormat format,
int width,
int height,
int rowstride,
int offset)
{
CoglBitmap *bmp;
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), NULL);
bmp = cogl_bitmap_new_for_data (buffer->context,
width, height,
format,
rowstride,
NULL /* data */);
bmp->buffer = cogl_object_ref (buffer);
bmp->data = GINT_TO_POINTER (offset);
return bmp;
}
void *
cogl_buffer_map_range (CoglBuffer *buffer,
size_t offset,
size_t size,
CoglBufferAccess access,
CoglBufferMapHint hints,
CoglError **error)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), NULL);
_COGL_RETURN_VAL_IF_FAIL (!(buffer->flags & COGL_BUFFER_FLAG_MAPPED), NULL);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
buffer->data = buffer->vtable.map_range (buffer,
offset,
size,
access,
hints,
error);
return buffer->data;
}