| |
| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| |
| #include "SkGr.h" |
| |
| /* Fill out buffer with the compressed format Ganesh expects from a colortable |
| based bitmap. [palette (colortable) + indices]. |
| |
| At the moment Ganesh only supports 8bit version. If Ganesh allowed we others |
| we could detect that the colortable.count is <= 16, and then repack the |
| indices as nibbles to save RAM, but it would take more time (i.e. a lot |
| slower than memcpy), so skipping that for now. |
| |
| Ganesh wants a full 256 palette entry, even though Skia's ctable is only as big |
| as the colortable.count says it is. |
| */ |
| static void build_compressed_data(void* buffer, const SkBitmap& bitmap) { |
| SkASSERT(SkBitmap::kIndex8_Config == bitmap.config()); |
| |
| SkAutoLockPixels apl(bitmap); |
| if (!bitmap.readyToDraw()) { |
| SkDEBUGFAIL("bitmap not ready to draw!"); |
| return; |
| } |
| |
| SkColorTable* ctable = bitmap.getColorTable(); |
| char* dst = (char*)buffer; |
| |
| memcpy(dst, ctable->lockColors(), ctable->count() * sizeof(SkPMColor)); |
| ctable->unlockColors(false); |
| |
| // always skip a full 256 number of entries, even if we memcpy'd fewer |
| dst += kGrColorTableSize; |
| |
| if (bitmap.width() == bitmap.rowBytes()) { |
| memcpy(dst, bitmap.getPixels(), bitmap.getSize()); |
| } else { |
| // need to trim off the extra bytes per row |
| size_t width = bitmap.width(); |
| size_t rowBytes = bitmap.rowBytes(); |
| const char* src = (const char*)bitmap.getPixels(); |
| for (int y = 0; y < bitmap.height(); y++) { |
| memcpy(dst, src, width); |
| src += rowBytes; |
| dst += width; |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static GrContext::TextureCacheEntry sk_gr_create_bitmap_texture(GrContext* ctx, |
| uint64_t key, |
| const GrTextureParams* params, |
| const SkBitmap& origBitmap) { |
| SkAutoLockPixels alp(origBitmap); |
| GrContext::TextureCacheEntry entry; |
| |
| if (!origBitmap.readyToDraw()) { |
| return entry; |
| } |
| |
| SkBitmap tmpBitmap; |
| |
| const SkBitmap* bitmap = &origBitmap; |
| |
| GrTextureDesc desc; |
| desc.fWidth = bitmap->width(); |
| desc.fHeight = bitmap->height(); |
| desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap->config()); |
| desc.fClientCacheID = key; |
| |
| 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 (kUncached_CacheID != key) { |
| return ctx->createAndLockTexture(params, 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 = SkBitmapConfig2GrPixelConfig(bitmap->config()); |
| if (kUncached_CacheID != key) { |
| return ctx->createAndLockTexture(params, 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; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrContext::TextureCacheEntry GrLockCachedBitmapTexture(GrContext* ctx, |
| const SkBitmap& bitmap, |
| const GrTextureParams* params) { |
| GrContext::TextureCacheEntry entry; |
| |
| if (!bitmap.isVolatile()) { |
| uint64_t key = bitmap.getGenerationID(); |
| key |= ((uint64_t) bitmap.pixelRefOffset()) << 32; |
| |
| GrTextureDesc desc; |
| desc.fWidth = bitmap.width(); |
| desc.fHeight = bitmap.height(); |
| desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap.config()); |
| desc.fClientCacheID = key; |
| |
| entry = ctx->findAndLockTexture(desc, params); |
| if (NULL == entry.texture()) { |
| entry = sk_gr_create_bitmap_texture(ctx, key, params, bitmap); |
| } |
| } else { |
| entry = sk_gr_create_bitmap_texture(ctx, kUncached_CacheID, params, bitmap); |
| } |
| if (NULL == entry.texture()) { |
| GrPrintf("---- failed to create texture for cache [%d %d]\n", |
| bitmap.width(), bitmap.height()); |
| } |
| return entry; |
| } |
| |
| void GrUnlockCachedBitmapTexture(GrContext* ctx, GrContext::TextureCacheEntry cache) { |
| ctx->unlockTexture(cache); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkGrClipIterator::reset(const SkClipStack& clipStack) { |
| fClipStack = &clipStack; |
| fIter.reset(clipStack); |
| // Gr has no notion of replace, skip to the |
| // last replace in the clip stack. |
| int lastReplace = 0; |
| int curr = 0; |
| while (NULL != (fCurr = fIter.next())) { |
| if (SkRegion::kReplace_Op == fCurr->fOp) { |
| lastReplace = curr; |
| } |
| ++curr; |
| } |
| fIter.reset(clipStack); |
| for (int i = 0; i < lastReplace+1; ++i) { |
| fCurr = fIter.next(); |
| } |
| } |
| |
| GrClipType SkGrClipIterator::getType() const { |
| GrAssert(!this->isDone()); |
| if (NULL == fCurr->fPath) { |
| return kRect_ClipType; |
| } else { |
| return kPath_ClipType; |
| } |
| } |
| |
| SkRegion::Op SkGrClipIterator::getOp() const { |
| // we skipped to the last "replace" op |
| // when this iter was reset. |
| // GrClip doesn't allow replace, so treat it as |
| // intersect. |
| if (SkRegion::kReplace_Op == fCurr->fOp) { |
| return SkRegion::kIntersect_Op; |
| } |
| |
| return fCurr->fOp; |
| |
| } |
| |
| bool SkGrClipIterator::getDoAA() const { |
| return fCurr->fDoAA; |
| } |
| |
| GrPathFill SkGrClipIterator::getPathFill() const { |
| switch (fCurr->fPath->getFillType()) { |
| case SkPath::kWinding_FillType: |
| return kWinding_GrPathFill; |
| case SkPath::kEvenOdd_FillType: |
| return kEvenOdd_GrPathFill; |
| case SkPath::kInverseWinding_FillType: |
| return kInverseWinding_GrPathFill; |
| case SkPath::kInverseEvenOdd_FillType: |
| return kInverseEvenOdd_GrPathFill; |
| default: |
| GrCrash("Unsupported path fill in clip."); |
| return kWinding_GrPathFill; // suppress warning |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrPixelConfig SkBitmapConfig2GrPixelConfig(SkBitmap::Config config) { |
| switch (config) { |
| case SkBitmap::kA8_Config: |
| return kAlpha_8_GrPixelConfig; |
| case SkBitmap::kIndex8_Config: |
| return kIndex_8_GrPixelConfig; |
| case SkBitmap::kRGB_565_Config: |
| return kRGB_565_GrPixelConfig; |
| case SkBitmap::kARGB_4444_Config: |
| return kRGBA_4444_GrPixelConfig; |
| case SkBitmap::kARGB_8888_Config: |
| return kSkia8888_PM_GrPixelConfig; |
| default: |
| // kNo_Config, kA1_Config missing, and kRLE_Index8_Config |
| return kUnknown_GrPixelConfig; |
| } |
| } |
| |