void
dfb_gfx_copy_stereo( CoreSurface *source,
DFBSurfaceStereoEye source_eye,
CoreSurface *destination,
DFBSurfaceStereoEye destination_eye,
const DFBRectangle *rect,
int x,
int y,
bool from_back )
{
DFBRectangle sourcerect = { 0, 0, source->config.size.w, source->config.size.h };
StateClient *client = state_client_tls.Get();
D_FLAGS_SET( client->state.modified, SMF_CLIP | SMF_SOURCE | SMF_DESTINATION | SMF_FROM | SMF_TO );
client->state.clip.x2 = destination->config.size.w - 1;
client->state.clip.y2 = destination->config.size.h - 1;
client->state.source = source;
client->state.destination = destination;
client->state.from = from_back ? CSBR_BACK : CSBR_FRONT;
client->state.from_eye = source_eye;
client->state.to = CSBR_BACK;
client->state.to_eye = destination_eye;
if (rect) {
if (dfb_rectangle_intersect( &sourcerect, rect )) {
DFBPoint point = { x + sourcerect.x - rect->x, y + sourcerect.y - rect->y };
CoreGraphicsStateClient_Blit( &client->client, &sourcerect, &point, 1 );
}
}
else {
DFBPoint point = { x, y };
CoreGraphicsStateClient_Blit( &client->client, &sourcerect, &point, 1 );
}
CoreGraphicsStateClient_Flush( &client->client, 0, CGSCFF_NONE );
/* Signal end of sequence. */
dfb_state_stop_drawing( &client->state );
client->state.destination = NULL;
client->state.source = NULL;
}
void
dfb_gfx_copy_regions_stereo( CoreSurface *source,
CoreSurfaceBufferRole from,
DFBSurfaceStereoEye source_eye,
CoreSurface *destination,
CoreSurfaceBufferRole to,
DFBSurfaceStereoEye destination_eye,
const DFBRegion *regions,
unsigned int num,
int x,
int y )
{
unsigned int i, n = 0;
DFBRectangle rect = { 0, 0, source->config.size.w, source->config.size.h };
DFBRectangle rects[num];
DFBPoint points[num];
D_ASSERT( !dfb_config->task_manager );
for (i=0; i<num; i++) {
DFB_REGION_ASSERT( ®ions[i] );
rects[n] = DFB_RECTANGLE_INIT_FROM_REGION( ®ions[i] );
if (dfb_rectangle_intersect( &rects[n], &rect )) {
points[n].x = x + rects[n].x - rect.x;
points[n].y = y + rects[n].y - rect.y;
n++;
}
}
if (n > 0) {
StateClient *client = state_client_tls.Get();
D_FLAGS_SET( client->state.modified, SMF_CLIP | SMF_SOURCE | SMF_DESTINATION | SMF_FROM | SMF_TO );
client->state.clip.x2 = destination->config.size.w - 1;
client->state.clip.y2 = destination->config.size.h - 1;
client->state.source = source;
client->state.destination = destination;
client->state.from = from;
client->state.from_eye = source_eye;
client->state.to = to;
client->state.to_eye = destination_eye;
CoreGraphicsStateClient_Blit( &client->client, rects, points, n );
CoreGraphicsStateClient_Flush( &client->client, 0, CGSCFF_NONE );
/* Signal end of sequence. */
dfb_state_stop_drawing( &client->state );
client->state.destination = NULL;
client->state.source = NULL;
}
}
static void
back_to_front_copy( CoreSurface *surface,
DFBSurfaceStereoEye eye,
const DFBRegion *region,
DFBSurfaceBlittingFlags flags,
int rotation)
{
DFBRectangle rect;
DFBPoint point;
StateClient *client = state_client_tls.Get();
if (region) {
rect.x = region->x1;
rect.y = region->y1;
rect.w = region->x2 - region->x1 + 1;
rect.h = region->y2 - region->y1 + 1;
}
else {
rect.x = 0;
rect.y = 0;
rect.w = surface->config.size.w;
rect.h = surface->config.size.h;
}
point.x = rect.x;
point.y = rect.y;
if (rotation == 90) {
point.x = rect.y;
point.y = surface->config.size.w - rect.w - rect.x;
D_FLAGS_SET( flags, DSBLIT_ROTATE90 );
}
else if (rotation == 180) {
point.x = surface->config.size.w - rect.w - rect.x;
point.y = surface->config.size.h - rect.h - rect.y;
D_FLAGS_SET( flags, DSBLIT_ROTATE180 );
}
else if (rotation == 270) {
point.x = surface->config.size.h - rect.h - rect.y;
point.y = rect.x;
D_FLAGS_SET( flags, DSBLIT_ROTATE270 );
}
D_FLAGS_SET( client->state.modified, SMF_CLIP | SMF_SOURCE | SMF_DESTINATION | SMF_FROM | SMF_TO );
client->state.clip.x2 = surface->config.size.w - 1;
client->state.clip.y2 = surface->config.size.h - 1;
client->state.source = surface;
client->state.destination = surface;
client->state.from = CSBR_BACK;
client->state.from_eye = eye;
client->state.to = CSBR_FRONT;
client->state.to_eye = eye;
client->state.blittingflags = flags;
CoreGraphicsStateClient_Blit( &client->client, &rect, &point, 1 );
CoreGraphicsStateClient_Flush( &client->client, 0, CGSCFF_FOLLOW_READER );
/* Signal end of sequence. */
dfb_state_stop_drawing( &client->state );
client->state.destination = NULL;
client->state.source = NULL;
}
void
dfb_gfx_copy_regions_client( CoreSurface *source,
CoreSurfaceBufferRole from,
DFBSurfaceStereoEye source_eye,
CoreSurface *destination,
CoreSurfaceBufferRole to,
DFBSurfaceStereoEye destination_eye,
const DFBRegion *regions,
unsigned int num,
int x,
int y,
CoreGraphicsStateClient *_client )
{
unsigned int i, n = 0;
DFBRectangle rect = { 0, 0, source->config.size.w, source->config.size.h };
DFBRectangle rects[num];
DFBPoint points[num];
CoreGraphicsStateClient *client = _client ? _client : &state_client_tls.Get()->client;
CardState *state = client->state;
CardState backup;
for (i=0; i<num; i++) {
DFB_REGION_ASSERT( ®ions[i] );
rects[n] = DFB_RECTANGLE_INIT_FROM_REGION( ®ions[i] );
if (dfb_rectangle_intersect( &rects[n], &rect )) {
points[n].x = x + rects[n].x;
points[n].y = y + rects[n].y;
n++;
}
}
if (n > 0) {
backup.clip = state->clip;
backup.source = state->source;
backup.destination = state->destination;
backup.from = state->from;
backup.from_eye = state->from_eye;
backup.to = state->to;
backup.to_eye = state->to_eye;
backup.blittingflags = state->blittingflags;
D_FLAGS_SET( state->modified, SMF_CLIP | SMF_SOURCE | SMF_DESTINATION | SMF_FROM | SMF_TO | SMF_BLITTING_FLAGS );
state->clip.x1 = 0;
state->clip.y1 = 0;
state->clip.x2 = destination->config.size.w - 1;
state->clip.y2 = destination->config.size.h - 1;
state->source = source;
state->destination = destination;
state->from = from;
state->from_eye = source_eye;
state->to = to;
state->to_eye = destination_eye;
state->blittingflags = DSBLIT_NOFX;
CoreGraphicsStateClient_Blit( client, rects, points, n );
if (!_client)
CoreGraphicsStateClient_Flush( client, 0, CGSCFF_NONE );
D_FLAGS_SET( state->modified, SMF_CLIP | SMF_SOURCE | SMF_DESTINATION | SMF_FROM | SMF_TO | SMF_BLITTING_FLAGS );
state->clip = backup.clip;
state->source = backup.source;
state->destination = backup.destination;
state->from = backup.from;
state->from_eye = backup.from_eye;
state->to = backup.to;
state->to_eye = backup.to_eye;
state->blittingflags = backup.blittingflags;
}
}
void sawman_draw_cursor ( CoreWindowStack *stack,
CardState *state,
CoreSurface *surface,
DFBRegion *region,
int x,
int y )
{
DFBRectangle src;
DFBRectangle clip;
DFBSurfaceBlittingFlags flags = DSBLIT_BLEND_ALPHACHANNEL;
D_ASSERT( stack != NULL );
D_MAGIC_ASSERT( state, CardState );
DFB_REGION_ASSERT( region );
D_ASSUME( stack->cursor.opacity > 0 );
D_DEBUG_AT( SaWMan_Draw, "%s( %p, %d,%d-%dx%d )\n", __FUNCTION__,
stack, DFB_RECTANGLE_VALS_FROM_REGION( region ) );
/* Initialize source rectangle. */
src.x = region->x1 - x + stack->cursor.hot.x;
src.y = region->y1 - y + stack->cursor.hot.y;
src.w = region->x2 - region->x1 + 1;
src.h = region->y2 - region->y1 + 1;
D_DEBUG_AT( SaWMan_Draw, " -> cursor surface %p\n", stack->cursor.surface );
/* Initialize source clipping rectangle */
clip.x = clip.y = 0;
clip.w = stack->cursor.surface->config.size.w;
clip.h = stack->cursor.surface->config.size.h;
/* Intersect rectangles */
if (!dfb_rectangle_intersect( &src, &clip ))
return;
/* Set destination. */
if (surface) {
state->destination = surface;
state->modified |= SMF_DESTINATION;
}
/* Use global alpha blending. */
if (stack->cursor.opacity != 0xFF) {
flags |= DSBLIT_BLEND_COLORALPHA;
if (stack->cursor.surface->config.caps & DSCAPS_PREMULTIPLIED) {
/* Need to premultiply source with Ac? */
flags |= DSBLIT_SRC_PREMULTCOLOR;
dfb_state_set_src_blend( state, DSBF_ONE );
}
else
dfb_state_set_src_blend( state, DSBF_SRCALPHA );
/* Set opacity as blending factor. */
if (state->color.a != stack->cursor.opacity) {
state->color.a = stack->cursor.opacity;
state->modified |= SMF_COLOR;
}
}
/* Different compositing methods depending on destination format. */
if (flags & DSBLIT_BLEND_ALPHACHANNEL) {
if (DFB_PIXELFORMAT_HAS_ALPHA( state->destination->config.format )) {
/*
* Always use compliant Porter/Duff SRC_OVER,
* if the destination has an alpha channel.
*
* Cd = destination color (non-premultiplied)
* Ad = destination alpha
*
* Cs = source color (non-premultiplied)
* As = source alpha
*
* Ac = color alpha
*
* cd = Cd * Ad (premultiply destination)
* cs = Cs * As (premultiply source)
*
* The full equation to calculate resulting color and alpha (premultiplied):
*
* cx = cd * (1-As*Ac) + cs * Ac
* ax = Ad * (1-As*Ac) + As * Ac
*/
dfb_state_set_src_blend( state, DSBF_ONE );
/* Need to premultiply source with As*Ac or only with Ac? */
if (! (stack->cursor.surface->config.caps & DSCAPS_PREMULTIPLIED))
flags |= DSBLIT_SRC_PREMULTIPLY;
else if (flags & DSBLIT_BLEND_COLORALPHA)
flags |= DSBLIT_SRC_PREMULTCOLOR;
/* Need to premultiply/demultiply destination? */
// if (! (state->destination->caps & DSCAPS_PREMULTIPLIED))
// flags |= DSBLIT_DST_PREMULTIPLY | DSBLIT_DEMULTIPLY;
}
else {
/*
* We can avoid DSBLIT_SRC_PREMULTIPLY for destinations without an alpha channel
* by using another blending function, which is more likely that it's accelerated
* than premultiplication at this point in time.
*
* This way the resulting alpha (ax) doesn't comply with SRC_OVER,
* but as the destination doesn't have an alpha channel it's no problem.
*
* As the destination's alpha value is always 1.0 there's no need for
* premultiplication. The resulting alpha value will also be 1.0 without
* exceptions, therefore no need for demultiplication.
*
* cx = Cd * (1-As*Ac) + Cs*As * Ac (still same effect as above)
* ax = Ad * (1-As*Ac) + As*As * Ac (wrong, but discarded anyways)
*/
if (stack->cursor.surface->config.caps & DSCAPS_PREMULTIPLIED) {
/* Need to premultiply source with Ac? */
if (flags & DSBLIT_BLEND_COLORALPHA)
flags |= DSBLIT_SRC_PREMULTCOLOR;
dfb_state_set_src_blend( state, DSBF_ONE );
}
else
dfb_state_set_src_blend( state, DSBF_SRCALPHA );
}
}
/* Set blitting flags. */
dfb_state_set_blitting_flags( state, flags );
/* Set blitting source. */
state->source = stack->cursor.surface;
state->from_eye = DSSE_LEFT;
state->modified |= SMF_SOURCE | SMF_FROM;
/* Set clipping region. */
dfb_state_set_clip( state, region );
/* Blit from the window to the region being updated. */
DFBPoint point = {
region->x1, region->y1
};
D_DEBUG_AT( SaWMan_Draw, " -> client %p\n", state->client );
CoreGraphicsStateClient_Blit( state->client, &src, &point, 1 );
/* Reset blitting source. */
state->source = NULL;
state->modified |= SMF_SOURCE;
/* Reset destination. */
if (surface) {
state->destination = NULL;
state->modified |= SMF_DESTINATION;
}
}
