ShadowTexture* TextDropShadowCache::get(SkPaint* paint, const char* text, uint32_t len,
int numGlyphs, uint32_t radius, const float* positions) {
ShadowText entry(paint, radius, len, text, positions);
ShadowTexture* texture = mCache.get(entry);
if (!texture) {
SkPaint paintCopy(*paint);
paintCopy.setTextAlign(SkPaint::kLeft_Align);
FontRenderer::DropShadow shadow = mRenderer->renderDropShadow(&paintCopy, text, 0,
len, numGlyphs, radius, positions);
texture = new ShadowTexture;
texture->left = shadow.penX;
texture->top = shadow.penY;
texture->width = shadow.width;
texture->height = shadow.height;
texture->generation = 0;
texture->blend = true;
const uint32_t size = shadow.width * shadow.height;
texture->bitmapSize = size;
// Don't even try to cache a bitmap that's bigger than the cache
if (size < mMaxSize) {
while (mSize + size > mMaxSize) {
mCache.removeOldest();
}
}
glGenTextures(1, &texture->id);
glBindTexture(GL_TEXTURE_2D, texture->id);
// Textures are Alpha8
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, texture->width, texture->height, 0,
GL_ALPHA, GL_UNSIGNED_BYTE, shadow.image);
texture->setFilter(GL_LINEAR);
texture->setWrap(GL_CLAMP_TO_EDGE);
if (size < mMaxSize) {
if (mDebugEnabled) {
ALOGD("Shadow texture created, size = %d", texture->bitmapSize);
}
entry.copyTextLocally();
mSize += size;
mCache.put(entry, texture);
} else {
texture->cleanup = true;
}
// Cleanup shadow
delete[] shadow.image;
}
return texture;
}
ShadowTexture* TextDropShadowCache::get(const SkPaint* paint, const glyph_t* glyphs, int numGlyphs,
float radius, const float* positions) {
ShadowText entry(paint, radius, numGlyphs, glyphs, positions);
ShadowTexture* texture = mCache.get(entry);
if (!texture) {
SkPaint paintCopy(*paint);
paintCopy.setTextAlign(SkPaint::kLeft_Align);
FontRenderer::DropShadow shadow =
mRenderer->renderDropShadow(&paintCopy, glyphs, numGlyphs, radius, positions);
if (!shadow.image) {
return nullptr;
}
Caches& caches = Caches::getInstance();
texture = new ShadowTexture(caches);
texture->left = shadow.penX;
texture->top = shadow.penY;
texture->generation = 0;
texture->blend = true;
const uint32_t size = shadow.width * shadow.height;
// Don't even try to cache a bitmap that's bigger than the cache
if (size < mMaxSize) {
while (mSize + size > mMaxSize) {
LOG_ALWAYS_FATAL_IF(!mCache.removeOldest(),
"Failed to remove oldest from cache. mSize = %" PRIu32
", mCache.size() = %zu",
mSize, mCache.size());
}
}
// Textures are Alpha8
texture->upload(GL_ALPHA, shadow.width, shadow.height, GL_ALPHA, GL_UNSIGNED_BYTE,
shadow.image);
texture->setFilter(GL_LINEAR);
texture->setWrap(GL_CLAMP_TO_EDGE);
if (size < mMaxSize) {
if (mDebugEnabled) {
ALOGD("Shadow texture created, size = %d", texture->bitmapSize);
}
entry.copyTextLocally();
mSize += texture->objectSize();
mCache.put(entry, texture);
} else {
texture->cleanup = true;
}
// Cleanup shadow
free(shadow.image);
}
return texture;
}
