GrContext::TextureCacheEntry sk_gr_create_bitmap_texture(GrContext* ctx,
GrContext::TextureKey key,
const GrSamplerState& sampler,
const SkBitmap& origBitmap) {
SkAutoLockPixels alp(origBitmap);
GrContext::TextureCacheEntry entry;
if (!origBitmap.readyToDraw()) {
return entry;
}
SkBitmap tmpBitmap;
const SkBitmap* bitmap = &origBitmap;
GrTextureDesc desc = {
kNone_GrTextureFlags,
kNone_GrAALevel,
bitmap->width(),
bitmap->height(),
SkGr::Bitmap2PixelConfig(*bitmap)
};
if (SkBitmap::kIndex8_Config == bitmap->config()) {
// build_compressed_data doesn't do npot->pot expansion
// and paletted textures can't be sub-updated
if (ctx->supportsIndex8PixelConfig(sampler,
bitmap->width(), bitmap->height())) {
size_t imagesize = bitmap->width() * bitmap->height() +
kGrColorTableSize;
SkAutoMalloc storage(imagesize);
build_compressed_data(storage.get(), origBitmap);
// our compressed data will be trimmed, so pass width() for its
// "rowBytes", since they are the same now.
if (gUNCACHED_KEY != key) {
return ctx->createAndLockTexture(key, sampler, desc, storage.get(),
bitmap->width());
} else {
entry = ctx->lockScratchTexture(desc,
GrContext::kExact_ScratchTexMatch);
entry.texture()->writePixels(0, 0, bitmap->width(),
bitmap->height(), desc.fConfig,
storage.get(), 0);
return entry;
}
} else {
origBitmap.copyTo(&tmpBitmap, SkBitmap::kARGB_8888_Config);
// now bitmap points to our temp, which has been promoted to 32bits
bitmap = &tmpBitmap;
}
}
desc.fConfig = SkGr::Bitmap2PixelConfig(*bitmap);
if (gUNCACHED_KEY != key) {
return ctx->createAndLockTexture(key, sampler, desc,
bitmap->getPixels(),
bitmap->rowBytes());
} else {
entry = ctx->lockScratchTexture(desc,
GrContext::kExact_ScratchTexMatch);
entry.texture()->writePixels(0, 0,
bitmap->width(), bitmap->height(),
desc.fConfig,
bitmap->getPixels(),
bitmap->rowBytes());
return entry;
}
}
GLuint SkGL::BindNewTexture(const SkBitmap& origBitmap, SkPoint* max) {
SkBitmap tmpBitmap;
const SkBitmap* bitmap = &origBitmap;
if (needToPromoteTo32bit(origBitmap)) {
origBitmap.copyTo(&tmpBitmap, SkBitmap::kARGB_8888_Config);
// now bitmap points to our temp, which has been promoted to 32bits
bitmap = &tmpBitmap;
}
GLenum format, type;
if (!canBeTexture(*bitmap, &format, &type)) {
return 0;
}
SkAutoLockPixels alp(*bitmap);
if (!bitmap->readyToDraw()) {
return 0;
}
GLuint textureName;
glGenTextures(1, &textureName);
glBindTexture(GL_TEXTURE_2D, textureName);
// express rowbytes as a number of pixels for ow
int ow = bitmap->rowBytesAsPixels();
int oh = bitmap->height();
int nw = SkNextPow2(ow);
int nh = SkNextPow2(oh);
glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel());
// check if we need to scale to create power-of-2 dimensions
#ifdef SK_GL_SUPPORT_COMPRESSEDTEXIMAGE2D
if (SkBitmap::kIndex8_Config == bitmap->config()) {
size_t imagesize = bitmap->getSize() + SK_GL_SIZE_OF_PALETTE;
SkAutoMalloc storage(imagesize);
build_compressed_data(storage.get(), *bitmap);
// we only support POW2 here (GLES 1.0 restriction)
SkASSERT(ow == nw);
SkASSERT(oh == nh);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, format, ow, oh, 0,
imagesize, storage.get());
} else // fall through to non-compressed logic
#endif
{
if (ow != nw || oh != nh) {
glTexImage2D(GL_TEXTURE_2D, 0, format, nw, nh, 0,
format, type, NULL);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, ow, oh,
format, type, bitmap->getPixels());
} else {
// easy case, the bitmap is already pow2
glTexImage2D(GL_TEXTURE_2D, 0, format, ow, oh, 0,
format, type, bitmap->getPixels());
}
}
#ifdef TRACE_TEXTURE_CREATION
SkDebugf("--- new texture [%d] size=(%d %d) bpp=%d\n", textureName, ow, oh,
bitmap->bytesPerPixel());
#endif
if (max) {
max->fX = SkFixedToScalar(bitmap->width() << (16 - SkNextLog2(nw)));
max->fY = SkFixedToScalar(oh << (16 - SkNextLog2(nh)));
}
return textureName;
}
static GrTexture* sk_gr_create_bitmap_texture(GrContext* ctx,
bool cache,
const GrTextureParams* params,
const SkBitmap& origBitmap) {
SkAutoLockPixels alp(origBitmap);
if (!origBitmap.readyToDraw()) {
return NULL;
}
SkBitmap tmpBitmap;
const SkBitmap* bitmap = &origBitmap;
GrTextureDesc desc;
generate_bitmap_texture_desc(*bitmap, &desc);
if (SkBitmap::kIndex8_Config == bitmap->config()) {
// build_compressed_data doesn't do npot->pot expansion
// and paletted textures can't be sub-updated
if (ctx->supportsIndex8PixelConfig(params,
bitmap->width(), bitmap->height())) {
size_t imagesize = bitmap->width() * bitmap->height() +
kGrColorTableSize;
SkAutoMalloc storage(imagesize);
build_compressed_data(storage.get(), origBitmap);
// our compressed data will be trimmed, so pass width() for its
// "rowBytes", since they are the same now.
if (cache) {
GrCacheID cacheID;
generate_bitmap_cache_id(origBitmap, &cacheID);
return ctx->createTexture(params, desc, cacheID, storage.get(), bitmap->width());
} else {
GrTexture* result = ctx->lockAndRefScratchTexture(desc,
GrContext::kExact_ScratchTexMatch);
result->writePixels(0, 0, bitmap->width(),
bitmap->height(), desc.fConfig,
storage.get());
return result;
}
} else {
origBitmap.copyTo(&tmpBitmap, SkBitmap::kARGB_8888_Config);
// now bitmap points to our temp, which has been promoted to 32bits
bitmap = &tmpBitmap;
desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap->config());
}
}
if (cache) {
// This texture is likely to be used again so leave it in the cache
GrCacheID cacheID;
generate_bitmap_cache_id(origBitmap, &cacheID);
return ctx->createTexture(params, desc, cacheID, bitmap->getPixels(), bitmap->rowBytes());
} else {
// This texture is unlikely to be used again (in its present form) so
// just use a scratch texture. This will remove the texture from the
// cache so no one else can find it. Additionally, once unlocked, the
// scratch texture will go to the end of the list for purging so will
// likely be available for this volatile bitmap the next time around.
GrTexture* result = ctx->lockAndRefScratchTexture(desc, GrContext::kExact_ScratchTexMatch);
result->writePixels(0, 0,
bitmap->width(), bitmap->height(),
desc.fConfig,
bitmap->getPixels(),
bitmap->rowBytes());
return result;
}
}