epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2010 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 10 | |
robertphillips@google.com | 5088eb4 | 2012-06-28 20:59:13 +0000 | [diff] [blame] | 11 | #include "SkGrPixelRef.h" |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 12 | #include "GrContext.h" |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 13 | #include "GrTexture.h" |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 14 | #include "SkGr.h" |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 15 | #include "SkRect.h" |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 16 | |
| 17 | // since we call lockPixels recursively on fBitmap, we need a distinct mutex, |
| 18 | // to avoid deadlock with the default one provided by SkPixelRef. |
digit@google.com | 1771cbf | 2012-01-26 21:26:40 +0000 | [diff] [blame] | 19 | SK_DECLARE_STATIC_MUTEX(gROLockPixelsPixelRefMutex); |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 20 | |
| 21 | SkROLockPixelsPixelRef::SkROLockPixelsPixelRef() : INHERITED(&gROLockPixelsPixelRefMutex) { |
| 22 | } |
| 23 | |
| 24 | SkROLockPixelsPixelRef::~SkROLockPixelsPixelRef() { |
| 25 | } |
| 26 | |
| 27 | void* SkROLockPixelsPixelRef::onLockPixels(SkColorTable** ctable) { |
| 28 | if (ctable) { |
| 29 | *ctable = NULL; |
| 30 | } |
| 31 | fBitmap.reset(); |
| 32 | // SkDebugf("---------- calling readpixels in support of lockpixels\n"); |
| 33 | if (!this->onReadPixels(&fBitmap, NULL)) { |
| 34 | SkDebugf("SkROLockPixelsPixelRef::onLockPixels failed!\n"); |
| 35 | return NULL; |
| 36 | } |
| 37 | fBitmap.lockPixels(); |
| 38 | return fBitmap.getPixels(); |
| 39 | } |
| 40 | |
| 41 | void SkROLockPixelsPixelRef::onUnlockPixels() { |
| 42 | fBitmap.unlockPixels(); |
| 43 | } |
| 44 | |
| 45 | bool SkROLockPixelsPixelRef::onLockPixelsAreWritable() const { |
| 46 | return false; |
| 47 | } |
| 48 | |
| 49 | /////////////////////////////////////////////////////////////////////////////// |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 50 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 51 | static SkGrPixelRef* copyToTexturePixelRef(GrTexture* texture, |
| 52 | SkBitmap::Config dstConfig) { |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 53 | if (NULL == texture) { |
| 54 | return NULL; |
| 55 | } |
| 56 | GrContext* context = texture->getContext(); |
| 57 | if (NULL == context) { |
| 58 | return NULL; |
| 59 | } |
| 60 | GrTextureDesc desc; |
| 61 | |
| 62 | desc.fWidth = texture->width(); |
| 63 | desc.fHeight = texture->height(); |
| 64 | desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit; |
robertphillips@google.com | a1e5795 | 2012-06-04 20:05:28 +0000 | [diff] [blame] | 65 | desc.fConfig = SkGr::BitmapConfig2PixelConfig(dstConfig); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 66 | |
| 67 | GrTexture* dst = context->createUncachedTexture(desc, NULL, 0); |
| 68 | if (NULL == dst) { |
| 69 | return NULL; |
| 70 | } |
| 71 | |
| 72 | context->copyTexture(texture, dst->asRenderTarget()); |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 73 | |
robertphillips@google.com | 41efe04 | 2012-06-29 20:55:14 +0000 | [diff] [blame] | 74 | // TODO: figure out if this is responsible for Chrome canvas errors |
| 75 | #if 0 |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 76 | // The render texture we have created (to perform the copy) isn't fully |
| 77 | // functional (since it doesn't have a stencil buffer). Release it here |
| 78 | // so the caller doesn't try to render to it. |
| 79 | // TODO: we can undo this release when dynamic stencil buffer attach/ |
| 80 | // detach has been implemented |
| 81 | dst->releaseRenderTarget(); |
robertphillips@google.com | 41efe04 | 2012-06-29 20:55:14 +0000 | [diff] [blame] | 82 | #endif |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 83 | |
tomhudson@google.com | c377baf | 2012-07-09 20:17:56 +0000 | [diff] [blame^] | 84 | SkGrPixelRef* pixelRef = SkNEW_ARGS(SkGrPixelRef, (dst)); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 85 | GrSafeUnref(dst); |
| 86 | return pixelRef; |
| 87 | } |
| 88 | |
| 89 | /////////////////////////////////////////////////////////////////////////////// |
| 90 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 91 | SkGrPixelRef::SkGrPixelRef(GrSurface* surface) { |
robertphillips@google.com | 41efe04 | 2012-06-29 20:55:14 +0000 | [diff] [blame] | 92 | // TODO: figure out if this is responsible for Chrome canvas errors |
| 93 | #if 0 |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 94 | // The GrTexture has a ref to the GrRenderTarget but not vice versa. |
| 95 | // If the GrTexture exists take a ref to that (rather than the render |
| 96 | // target) |
| 97 | fSurface = surface->asTexture(); |
robertphillips@google.com | 41efe04 | 2012-06-29 20:55:14 +0000 | [diff] [blame] | 98 | #else |
| 99 | fSurface = NULL; |
| 100 | #endif |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 101 | if (NULL == fSurface) { |
| 102 | fSurface = surface; |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 103 | } |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 104 | |
| 105 | GrSafeRef(surface); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 106 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 107 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 108 | SkGrPixelRef::~SkGrPixelRef() { |
| 109 | GrSafeUnref(fSurface); |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 110 | } |
| 111 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 112 | SkGpuTexture* SkGrPixelRef::getTexture() { |
| 113 | if (NULL != fSurface) { |
| 114 | return (SkGpuTexture*) fSurface->asTexture(); |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 115 | } |
| 116 | return NULL; |
| 117 | } |
| 118 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 119 | SkPixelRef* SkGrPixelRef::deepCopy(SkBitmap::Config dstConfig) { |
| 120 | if (NULL == fSurface) { |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 121 | return NULL; |
| 122 | } |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 123 | |
| 124 | // Note that when copying a render-target-backed pixel ref, we |
| 125 | // return a texture-backed pixel ref instead. This is because |
| 126 | // render-target pixel refs are usually created in conjunction with |
| 127 | // a GrTexture owned elsewhere (e.g., SkGpuDevice), and cannot live |
| 128 | // independently of that texture. Texture-backed pixel refs, on the other |
| 129 | // hand, own their GrTextures, and are thus self-contained. |
| 130 | return copyToTexturePixelRef(fSurface->asTexture(), dstConfig); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 131 | } |
| 132 | |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 133 | bool SkGrPixelRef::onReadPixels(SkBitmap* dst, const SkIRect* subset) { |
| 134 | if (NULL == fSurface || !fSurface->isValid()) { |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 135 | return false; |
| 136 | } |
robertphillips@google.com | d881bc1 | 2012-06-28 20:02:39 +0000 | [diff] [blame] | 137 | |
| 138 | int left, top, width, height; |
| 139 | if (NULL != subset) { |
| 140 | left = subset->fLeft; |
| 141 | width = subset->width(); |
| 142 | top = subset->fTop; |
| 143 | height = subset->height(); |
| 144 | } else { |
| 145 | left = 0; |
| 146 | width = fSurface->width(); |
| 147 | top = 0; |
| 148 | height = fSurface->height(); |
| 149 | } |
| 150 | dst->setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 151 | dst->allocPixels(); |
| 152 | SkAutoLockPixels al(*dst); |
| 153 | void* buffer = dst->getPixels(); |
| 154 | return fSurface->readPixels(left, top, width, height, |
| 155 | kSkia8888_PM_GrPixelConfig, |
| 156 | buffer, dst->rowBytes()); |
reed@google.com | 4281d65 | 2011-04-08 18:54:20 +0000 | [diff] [blame] | 157 | } |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 158 | |