diff options
Diffstat (limited to 'src/gpu')
-rw-r--r-- | src/gpu/GrContext.cpp | 8 | ||||
-rw-r--r-- | src/gpu/effects/GrTextureStripAtlas.cpp | 4 | ||||
-rw-r--r-- | src/gpu/effects/GrTextureStripAtlas.h | 189 |
3 files changed, 12 insertions, 189 deletions
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp index 06c27ea2cf..5f4e663580 100644 --- a/src/gpu/GrContext.cpp +++ b/src/gpu/GrContext.cpp @@ -594,6 +594,14 @@ void GrContext::flushSurfaceWrites(GrSurface* surface) { } } +void GrContext::flushSurfaceIO(GrSurface* surface) { + ASSERT_SINGLE_OWNER + RETURN_IF_ABANDONED + if (surface->surfacePriv().hasPendingIO()) { + this->flush(); + } +} + //////////////////////////////////////////////////////////////////////////////// int GrContext::getRecommendedSampleCount(GrPixelConfig config, SkScalar dpi) const { diff --git a/src/gpu/effects/GrTextureStripAtlas.cpp b/src/gpu/effects/GrTextureStripAtlas.cpp index 1543a2e9db..2c882508f5 100644 --- a/src/gpu/effects/GrTextureStripAtlas.cpp +++ b/src/gpu/effects/GrTextureStripAtlas.cpp @@ -209,6 +209,10 @@ void GrTextureStripAtlas::lockTexture() { if (!fTexture) { return; } + + // We will be issuing writes to the surface using kDontFlush_PixelOpsFlag, so we + // need to make sure any existing IO is flushed + fDesc.fContext->flushSurfaceIO(fTexture); fDesc.fContext->textureProvider()->assignUniqueKeyToTexture(key, fTexture); // This is a new texture, so all of our cache info is now invalid this->initLRU(); diff --git a/src/gpu/effects/GrTextureStripAtlas.h b/src/gpu/effects/GrTextureStripAtlas.h deleted file mode 100644 index 5b90a342d7..0000000000 --- a/src/gpu/effects/GrTextureStripAtlas.h +++ /dev/null @@ -1,189 +0,0 @@ -/* - * Copyright 2012 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef GrTextureStripAtlas_DEFINED -#define GrTextureStripAtlas_DEFINED - -#include "SkBitmap.h" -#include "SkOpts.h" -#include "SkGr.h" -#include "SkTDArray.h" -#include "SkTDynamicHash.h" -#include "SkTypes.h" - -/** - * Maintains a single large texture whose rows store many textures of a small fixed height, - * stored in rows across the x-axis such that we can safely wrap/repeat them horizontally. - */ -class GrTextureStripAtlas { -public: - /** - * Descriptor struct which we'll use as a hash table key - **/ - struct Desc { - Desc() { sk_bzero(this, sizeof(*this)); } - GrContext* fContext; - GrPixelConfig fConfig; - uint16_t fWidth, fHeight, fRowHeight; - uint16_t fUnusedPadding; - bool operator==(const Desc& other) const { - return 0 == memcmp(this, &other, sizeof(Desc)); - } - }; - - /** - * Try to find an atlas with the required parameters, creates a new one if necessary - */ - static GrTextureStripAtlas* GetAtlas(const Desc& desc); - - ~GrTextureStripAtlas(); - - /** - * Add a texture to the atlas - * @param data Bitmap data to copy into the row - * @return The row index we inserted into, or -1 if we failed to find an open row. The caller - * is responsible for calling unlockRow() with this row index when it's done with it. - */ - int lockRow(const SkBitmap& data); - void unlockRow(int row); - - /** - * These functions help turn an integer row index in [0, 1, 2, ... numRows] into a scalar y - * texture coordinate in [0, 1] that we can use in a shader. - * - * If a regular texture access without using the atlas looks like: - * - * texture2D(sampler, vec2(x, y)) - * - * Then when using the atlas we'd replace it with: - * - * texture2D(sampler, vec2(x, yOffset + y * scaleFactor)) - * - * Where yOffset, returned by getYOffset(), is the offset to the start of the row within the - * atlas and scaleFactor, returned by getNormalizedTexelHeight, is the normalized height of - * one texel row. - */ - SkScalar getYOffset(int row) const { return SkIntToScalar(row) / fNumRows; } - SkScalar getNormalizedTexelHeight() const { return fNormalizedYHeight; } - - GrContext* getContext() const { return fDesc.fContext; } - GrTexture* getTexture() const { return fTexture; } - -private: - - // Key to indicate an atlas row without any meaningful data stored in it - const static uint32_t kEmptyAtlasRowKey = 0xffffffff; - - /** - * The state of a single row in our cache, next/prev pointers allow these to be chained - * together to represent LRU status - */ - struct AtlasRow : SkNoncopyable { - AtlasRow() : fKey(kEmptyAtlasRowKey), fLocks(0), fNext(nullptr), fPrev(nullptr) { } - // GenerationID of the bitmap that is represented by this row, 0xffffffff means "empty" - uint32_t fKey; - // How many times this has been locked (0 == unlocked) - int32_t fLocks; - // We maintain an LRU linked list between unlocked nodes with these pointers - AtlasRow* fNext; - AtlasRow* fPrev; - }; - - /** - * We'll only allow construction via the static GrTextureStripAtlas::GetAtlas - */ - GrTextureStripAtlas(Desc desc); - - void lockTexture(); - void unlockTexture(); - - /** - * Initialize our LRU list (if one already exists, clear it and start anew) - */ - void initLRU(); - - /** - * Grabs the least recently used free row out of the LRU list, returns nullptr if no rows are free. - */ - AtlasRow* getLRU(); - - void appendLRU(AtlasRow* row); - void removeFromLRU(AtlasRow* row); - - /** - * Searches the key table for a key and returns the index if found; if not found, it returns - * the bitwise not of the index at which we could insert the key to maintain a sorted list. - **/ - int searchByKey(uint32_t key); - - /** - * Compare two atlas rows by key, so we can sort/search by key - */ - static bool KeyLess(const AtlasRow& lhs, const AtlasRow& rhs) { - return lhs.fKey < rhs.fKey; - } - -#ifdef SK_DEBUG - void validate(); -#endif - - /** - * Clean up callback registered with GrContext. Allows this class to - * free up any allocated AtlasEntry and GrTextureStripAtlas objects - */ - static void CleanUp(const GrContext* context, void* info); - - // Hash table entry for atlases - class AtlasEntry : public ::SkNoncopyable { - public: - // for SkTDynamicHash - static const Desc& GetKey(const AtlasEntry& entry) { return entry.fDesc; } - static uint32_t Hash(const Desc& desc) { return SkOpts::hash(&desc, sizeof(Desc)); } - - // AtlasEntry proper - AtlasEntry() : fAtlas(nullptr) {} - ~AtlasEntry() { delete fAtlas; } - Desc fDesc; - GrTextureStripAtlas* fAtlas; - }; - - class Hash; - static Hash* gAtlasCache; - - static Hash* GetCache(); - - // We increment gCacheCount for each atlas - static int32_t gCacheCount; - - // A unique ID for this texture (formed with: gCacheCount++), so we can be sure that if we - // get a texture back from the texture cache, that it's the same one we last used. - const int32_t fCacheKey; - - // Total locks on all rows (when this reaches zero, we can unlock our texture) - int32_t fLockedRows; - - const Desc fDesc; - const uint16_t fNumRows; - GrTexture* fTexture; - - SkScalar fNormalizedYHeight; - - // Array of AtlasRows which store the state of all our rows. Stored in a contiguous array, in - // order that they appear in our texture, this means we can subtract this pointer from a row - // pointer to get its index in the texture, and can save storing a row number in AtlasRow. - AtlasRow* fRows; - - // Head and tail for linked list of least-recently-used rows (front = least recently used). - // Note that when a texture is locked, it gets removed from this list until it is unlocked. - AtlasRow* fLRUFront; - AtlasRow* fLRUBack; - - // A list of pointers to AtlasRows that currently contain cached images, sorted by key - SkTDArray<AtlasRow*> fKeyTable; -}; - -#endif |