The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/gpu/GrStencilBuffer.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,47 @@
     1.4 +
     1.5 +/*
     1.6 + * Copyright 2011 Google Inc.
     1.7 + *
     1.8 + * Use of this source code is governed by a BSD-style license that can be
     1.9 + * found in the LICENSE file.
    1.10 + */
    1.11 +
    1.12 +#include "GrStencilBuffer.h"
    1.13 +
    1.14 +#include "GrContext.h"
    1.15 +#include "GrGpu.h"
    1.16 +#include "GrResourceCache.h"
    1.17 +
    1.18 +void GrStencilBuffer::transferToCache() {
    1.19 +    SkASSERT(NULL == this->getCacheEntry());
    1.20 +
    1.21 +    this->getGpu()->getContext()->addStencilBuffer(this);
    1.22 +}
    1.23 +
    1.24 +namespace {
    1.25 +// we should never have more than one stencil buffer with same combo of (width,height,samplecount)
    1.26 +void gen_cache_id(int width, int height, int sampleCnt, GrCacheID* cacheID) {
    1.27 +    static const GrCacheID::Domain gStencilBufferDomain = GrCacheID::GenerateDomain();
    1.28 +    GrCacheID::Key key;
    1.29 +    uint32_t* keyData = key.fData32;
    1.30 +    keyData[0] = width;
    1.31 +    keyData[1] = height;
    1.32 +    keyData[2] = sampleCnt;
    1.33 +    memset(keyData + 3, 0, sizeof(key) - 3 * sizeof(uint32_t));
    1.34 +    GR_STATIC_ASSERT(sizeof(key) >= 3 * sizeof(uint32_t));
    1.35 +    cacheID->reset(gStencilBufferDomain, key);
    1.36 +}
    1.37 +}
    1.38 +
    1.39 +GrResourceKey GrStencilBuffer::ComputeKey(int width,
    1.40 +                                          int height,
    1.41 +                                          int sampleCnt) {
    1.42 +    // All SBs are created internally to attach to RTs so they all use the same domain.
    1.43 +    static const GrResourceKey::ResourceType gStencilBufferResourceType =
    1.44 +        GrResourceKey::GenerateResourceType();
    1.45 +    GrCacheID id;
    1.46 +    gen_cache_id(width, height, sampleCnt, &id);
    1.47 +
    1.48 +    // we don't use any flags for SBs currently.
    1.49 +    return GrResourceKey(id, gStencilBufferResourceType, 0);
    1.50 +}