/* Create a masked surface from the given transparent sprite and mask.
The sprite must be at least as wide as the mask plus mask offset. */
static SDL_Surface *
create_masked_transp_surface(const sprite_t *sprite, const sprite_t *mask, int mask_off)
{
void *s_data = (uint8_t *)sprite + sizeof(sprite_t);
size_t s_width = le16toh(sprite->w);
size_t s_height = le16toh(sprite->h);
/* Unpack */
size_t unpack_size = s_width * s_height;
uint8_t *unpack = calloc(unpack_size, sizeof(uint8_t));
if (unpack == NULL) abort();
gfx_unpack_transparent_sprite(unpack, s_data, unpack_size, 0);
size_t m_width = le16toh(mask->w);
size_t m_height = le16toh(mask->h);
uint8_t *s_copy = calloc(m_width * m_height, sizeof(uint8_t));
if (s_copy == NULL) abort();
size_t to_copy = m_width * min(m_height, s_height);
uint8_t *copy_dest = s_copy;
uint8_t *copy_src = unpack + mask_off;
while (to_copy) {
memcpy(copy_dest, copy_src, m_width * sizeof(uint8_t));
to_copy -= m_width;
copy_dest += m_width;
copy_src += s_width;
}
free(unpack);
/* Mask */
void *m_data = (uint8_t *)mask + sizeof(sprite_t);
/* Unpack mask */
size_t m_unpack_size = m_width * m_height;
uint8_t *m_unpack = calloc(m_unpack_size, sizeof(uint8_t));
if (m_unpack == NULL) abort();
gfx_unpack_mask_sprite(m_unpack, m_data, m_unpack_size);
/* Fill alpha value from mask data */
for (int y = 0; y < m_height; y++) {
for (int x = 0; x < m_width; x++) {
if (!m_unpack[y*m_width+x]) {
*(s_copy + y * m_width + x) = 0;
}
}
}
free(m_unpack);
SDL_Surface *surf = create_surface_from_data(s_copy, m_width, m_height, 1);
free(s_copy);
return surf;
}
surface_t *
skia_draw_masked_sprite(const sprite_t *sprite, int x, int y, const sprite_t *mask, surface_t *surface, frame_t *dest)
{
// LOGI("skia_draw_masked_sprite x=%d y=%d", x, y);
if (dest == NULL) {
LOGE("skia_draw_masked_sprite: dest is NULL");
return 0;
}
if (dest->skCanvas == NULL) {
LOGE("skia_draw_masked_sprite: dest->skCanvas is NULL");
return 0;
}
size_t m_width = le16toh(mask->w);
size_t m_height = le16toh(mask->h);
size_t s_width = le16toh(sprite->w);
size_t s_height = le16toh(sprite->h);
SkAutoMalloc auto_s_copy (m_width * m_height);
uint8_t* s_copy = static_cast<uint8_t*>(auto_s_copy.get());
if (s_copy == NULL) {
LOGE("skia_draw_masked_sprite: out of memory");
return 0;
}
void *s_data = (uint8_t *)sprite + sizeof(sprite_t);
size_t to_copy = m_width * m_height;
size_t s_size = s_width * s_height;
uint8_t *copy_dest = s_copy;
while (to_copy) {
size_t s = to_copy < s_size ? to_copy : s_size;
memcpy(copy_dest, s_data, s * sizeof(uint8_t)); // copy from beginning again
to_copy -= s;
copy_dest += s;
}
// Mask
void *m_data = (uint8_t *)mask + sizeof(sprite_t);
/* Unpack mask */
size_t unpack_size = m_width * m_height;
SkAutoMalloc auto_m_unpack (unpack_size);
uint8_t* m_unpack = static_cast<uint8_t*>(auto_m_unpack.get());
if (m_unpack == NULL) {
LOGE("m_unpack is NULL");
return 0;
}
gfx_unpack_mask_sprite(m_unpack, m_data, unpack_size);
// Fill alpha value from mask data
for (int y = 0; y < m_height; y++) {
for (int x = 0; x < m_width; x++) {
if (m_unpack[y*m_width+x] == 0) {
s_copy[y*m_width+x] = 0;
}
}
}
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kIndex8_Config, m_width, m_height);
bitmap.setPixels(s_copy, g_color_table.get());
x += le16toh(mask->x);
y += le16toh(mask->y);
SkRect src_rect;
src_rect.fLeft = 0;
src_rect.fTop = 0;
src_rect.fRight = SkIntToScalar(m_width);
src_rect.fBottom = SkIntToScalar(m_height);
SkRect dst_rect;
dst_rect.fLeft = x;
dst_rect.fTop = y;
dst_rect.fRight = x + SkIntToScalar(m_width);
dst_rect.fBottom = y + SkIntToScalar(m_height);
((SkCanvas*)dest->skCanvas)->drawBitmapRectToRect(bitmap, &src_rect, dst_rect, NULL);
return 0;
}
void
sdl_draw_overlay_sprite(const sprite_t *sprite, int x, int y, int y_off, frame_t *dest)
{
int r;
x += le16toh(sprite->x) + dest->clip.x;
y += le16toh(sprite->y) + dest->clip.y;
const surface_id_t id = { .sprite = sprite, .mask = NULL, .offset = 0 };
surface_t **surface = surface_ht_store(&overlay_sprite_cache, &id);
if (*surface == NULL) {
*surface = malloc(sizeof(surface_t));
if (*surface == NULL) abort();
(*surface)->surf = create_overlay_surface(sprite);
}
SDL_Surface *surf = (*surface)->surf;
SDL_Rect src_rect = { 0, y_off, surf->w, surf->h - y_off };
SDL_Rect dest_rect = { x, y + y_off, 0, 0 };
SDL_SetClipRect(dest->surf, &dest->clip);
/* Blit sprite */
r = SDL_BlitSurface(surf, &src_rect, dest->surf, &dest_rect);
if (r < 0) {
LOGE("sdl-video", "BlitSurface error: %s.", SDL_GetError());
}
#if 0
/* Bounding box */
sdl_draw_rect(x, y + y_off, surf->w, surf->h - y_off, 1, dest);
#endif
}
static SDL_Surface *
create_masked_surface(const sprite_t *sprite, const sprite_t *mask)
{
size_t m_width = le16toh(mask->w);
size_t m_height = le16toh(mask->h);
size_t s_width = le16toh(sprite->w);
size_t s_height = le16toh(sprite->h);
void *s_data = (uint8_t *)sprite + sizeof(sprite_t);
uint8_t *s_copy = malloc(m_width * m_height * sizeof(uint8_t));
if (s_copy == NULL) abort();
size_t to_copy = m_width * m_height;
uint8_t *copy_dest = s_copy;
while (to_copy) {
size_t s = min(to_copy, s_width * s_height);
memcpy(copy_dest, s_data, s * sizeof(uint8_t));
to_copy -= s;
copy_dest += s;
}
/* Mask */
void *m_data = (uint8_t *)mask + sizeof(sprite_t);
/* Unpack mask */
size_t unpack_size = m_width * m_height;
uint8_t *m_unpack = calloc(unpack_size, sizeof(uint8_t));
if (m_unpack == NULL) abort();
gfx_unpack_mask_sprite(m_unpack, m_data, unpack_size);
/* Fill alpha value from mask data */
for (int y = 0; y < m_height; y++) {
for (int x = 0; x < m_width; x++) {
if (!m_unpack[y*m_width+x]) {
*(s_copy + y * m_width + x) = 0;
}
}
}
free(m_unpack);
SDL_Surface *surf = create_surface_from_data(s_copy, (int)m_width, (int)m_height, 1);
free(s_copy);
return surf;
}
