Revert "Remove SkImage deferred texture image data APIs."

This reverts commit 4f5e1d4ff3fa9f240398c9a08be94beb1c16dad0.

Reason for revert: Unfortunately, we need this in Chrome for a bit longer. Working on understanding why the new path led to regressions. Will re-land this once the new path sticks.

Original change's description:
> Remove SkImage deferred texture image data APIs.
> 
> These APIs existed for Chrome. Chrome is no longer using them.
> 
> Change-Id: I15a5e2f88c7e8d1356188748fc68d4658f6f1849
> Reviewed-on: https://skia-review.googlesource.com/81021
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Cary Clark <caryclark@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,brianosman@google.com,caryclark@google.com,caryclark@skia.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Ic9f683f262f2e1d0469156360f5ffaee977ca44a
Reviewed-on: https://skia-review.googlesource.com/86280
Reviewed-by: Eric Karl <ericrk@chromium.org>
Commit-Queue: Eric Karl <ericrk@chromium.org>

1 files changed, 222 insertions, 0 deletions

diff --git a/gm/deferredtextureimage.cpp b/gm/deferredtextureimage.cpp
new file mode 100644
index 0000000000..b034a4ef15
--- /dev/null
+++ b/gm/deferredtextureimage.cpp
@@ -0,0 +1,222 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include <vector>
+
+#include "gm.h"
+#include "SkImage.h"
+#include "SkMipMap.h"
+#include "Resources.h"
+
+#if SK_SUPPORT_GPU
+#include "GrContext.h"
+
+// Helper function that uploads the given SkImage using MakeFromDeferredTextureImageData and then
+// draws the uploaded version at the specified coordinates.
+static void DrawDeferredTextureImageData(SkCanvas* canvas,
+                                         const char* resourceName,
+                                         SkImage::DeferredTextureImageUsageParams* params,
+                                         SkColorType dstColorType) {
+    GrContext* context = canvas->getGrContext();
+    if (!context) {
+        skiagm::GM::DrawGpuOnlyMessage(canvas);
+        return;
+    }
+    sk_sp<GrContextThreadSafeProxy> proxy(context->threadSafeProxy());
+
+
+
+    sk_sp<SkImage> encodedImage = GetResourceAsImage(resourceName);
+    if (!encodedImage) {
+        SkDebugf("\nCould not load resource.\n");
+        return;
+    }
+
+    size_t requiredMemoryInBytes = encodedImage->getDeferredTextureImageData(
+        *proxy, params, 1, nullptr, canvas->imageInfo().colorSpace(), dstColorType);
+    if (requiredMemoryInBytes == 0) {
+        SkDebugf("\nCould not create DeferredTextureImageData.\n");
+        return;
+    }
+
+    std::vector<uint8_t> memory;
+    memory.resize(requiredMemoryInBytes);
+    encodedImage->getDeferredTextureImageData(
+        *proxy, params, 1, memory.data(), canvas->imageInfo().colorSpace(), dstColorType);
+    sk_sp<SkImage> uploadedEncodedImage = SkImage::MakeFromDeferredTextureImageData(
+        context, memory.data(), SkBudgeted::kNo);
+
+    canvas->drawImage(uploadedEncodedImage, 10, 10);
+
+
+
+    SkBitmap bitmap;
+    if (!GetResourceAsBitmap(resourceName, &bitmap)) {
+        SkDebugf("\nCould not decode resource.\n");
+        return;
+    }
+    sk_sp<SkImage> decodedImage = SkImage::MakeFromBitmap(bitmap);
+
+    requiredMemoryInBytes = decodedImage->getDeferredTextureImageData(
+        *proxy, params, 1, nullptr, canvas->imageInfo().colorSpace(), dstColorType);
+    if (requiredMemoryInBytes == 0) {
+        SkDebugf("\nCould not create DeferredTextureImageData.\n");
+        return;
+    }
+
+    memory.resize(requiredMemoryInBytes);
+    decodedImage->getDeferredTextureImageData(
+        *proxy, params, 1, memory.data(), canvas->imageInfo().colorSpace(), dstColorType);
+    sk_sp<SkImage> uploadedDecodedImage = SkImage::MakeFromDeferredTextureImageData(
+        context, memory.data(), SkBudgeted::kNo);
+
+    canvas->drawImage(uploadedDecodedImage, encodedImage->width() + 20, 10);
+}
+
+static void DrawDeferredTextureImageMipMapTree(SkCanvas* canvas, SkImage* image,
+                                               SkImage::DeferredTextureImageUsageParams* params,
+                                               SkColorType dstColorType) {
+    GrContext* context = canvas->getGrContext();
+    if (!context) {
+        skiagm::GM::DrawGpuOnlyMessage(canvas);
+        return;
+    }
+    sk_sp<GrContextThreadSafeProxy> proxy(context->threadSafeProxy());
+
+    SkPaint paint;
+    paint.setFilterQuality(params->fQuality);
+
+    int mipLevelCount = SkMipMap::ComputeLevelCount(image->width(), image->height());
+    size_t requiredMemoryInBytes = image->getDeferredTextureImageData(
+        *proxy, params, 1, nullptr, canvas->imageInfo().colorSpace(), dstColorType);
+    if (requiredMemoryInBytes == 0) {
+        SkDebugf("\nCould not create DeferredTextureImageData.\n");
+        return;
+    }
+
+    std::vector<uint8_t> memory;
+    memory.resize(requiredMemoryInBytes);
+    image->getDeferredTextureImageData(
+        *proxy, params, 1, memory.data(), canvas->imageInfo().colorSpace(), dstColorType);
+    sk_sp<SkImage> uploadedImage = SkImage::MakeFromDeferredTextureImageData(
+        context, memory.data(), SkBudgeted::kNo);
+
+    // draw a column using deferred texture images
+    SkScalar offsetHeight = 10.f;
+    // handle base mipmap level
+    canvas->save();
+    canvas->translate(10.f, offsetHeight);
+    canvas->drawImage(uploadedImage, 0, 0, &paint);
+    canvas->restore();
+    offsetHeight += image->height() + 10;
+    // handle generated mipmap levels
+    for (int i = 0; i < mipLevelCount; i++) {
+        SkISize mipSize = SkMipMap::ComputeLevelSize(image->width(), image->height(), i);
+        canvas->save();
+        canvas->translate(10.f, offsetHeight);
+        canvas->scale(mipSize.width() / static_cast<float>(image->width()),
+                      mipSize.height() / static_cast<float>(image->height()));
+        canvas->drawImage(uploadedImage, 0, 0, &paint);
+        canvas->restore();
+        offsetHeight += mipSize.height() + 10;
+    }
+
+    // draw a column using SkImage
+    offsetHeight = 10;
+    // handle base mipmap level
+    canvas->save();
+    canvas->translate(image->width() + 20.f, offsetHeight);
+    canvas->drawImage(image, 0, 0, &paint);
+    canvas->restore();
+    offsetHeight += image->height() + 10;
+    // handle generated mipmap levels
+    for (int i = 0; i < mipLevelCount; i++) {
+        SkISize mipSize = SkMipMap::ComputeLevelSize(image->width(), image->height(), i);
+        canvas->save();
+        canvas->translate(image->width() + 20.f, offsetHeight);
+        canvas->scale(mipSize.width() / static_cast<float>(image->width()),
+                      mipSize.height() / static_cast<float>(image->height()));
+        canvas->drawImage(image, 0, 0, &paint);
+        canvas->restore();
+        offsetHeight += mipSize.height() + 10;
+    }
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_none, canvas, 512 + 512 + 30, 512 + 20) {
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(1.f, 1.f),
+                                                           kNone_SkFilterQuality, 0);
+    DrawDeferredTextureImageData(canvas, "mandrill_512.png", &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_low, canvas, 512 + 512 + 30, 512 + 20) {
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(1.f, 1.f),
+                                                           kLow_SkFilterQuality, 0);
+    DrawDeferredTextureImageData(canvas, "mandrill_512.png", &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_low_dithered, canvas, 180 + 180 + 30, 180 + 20) {
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
+                                                           kLow_SkFilterQuality, 0);
+    DrawDeferredTextureImageData(canvas, "dog.jpg", &params, kARGB_4444_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_medium_encoded, canvas, 512 + 512 + 30, 1110) {
+    sk_sp<SkImage> encodedImage = GetResourceAsImage("mandrill_512.png");
+    if (!encodedImage) {
+        SkDebugf("\nCould not load resource.\n");
+        return;
+    }
+
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
+                                                           kMedium_SkFilterQuality, 0);
+    DrawDeferredTextureImageMipMapTree(canvas, encodedImage.get(), &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_medium_decoded, canvas, 512 + 512 + 30, 1110) {
+    SkBitmap bitmap;
+    if (!GetResourceAsBitmap("mandrill_512.png", &bitmap)) {
+        SkDebugf("\nCould not decode resource.\n");
+        return;
+    }
+    sk_sp<SkImage> decodedImage = SkImage::MakeFromBitmap(bitmap);
+
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
+                                                           kMedium_SkFilterQuality, 0);
+    DrawDeferredTextureImageMipMapTree(canvas, decodedImage.get(), &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_high, canvas, 512 + 512 + 30, 512 + 20) {
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(1.f, 1.f),
+                                                           kHigh_SkFilterQuality, 0);
+    DrawDeferredTextureImageData(canvas, "mandrill_512.png", &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_medium_encoded_indexed, canvas, 128 + 128 + 30, 340) {
+    sk_sp<SkImage> encodedImage = GetResourceAsImage("color_wheel.gif");
+    if (!encodedImage) {
+        SkDebugf("\nCould not load resource.\n");
+        return;
+    }
+
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
+                                                           kMedium_SkFilterQuality, 0);
+    DrawDeferredTextureImageMipMapTree(canvas, encodedImage.get(), &params, kN32_SkColorType);
+}
+
+DEF_SIMPLE_GM(deferred_texture_image_medium_decoded_indexed, canvas, 128 + 128 + 30, 340) {
+    SkBitmap bitmap;
+    if (!GetResourceAsBitmap("color_wheel.gif", &bitmap)) {
+        SkDebugf("\nCould not decode resource.\n");
+        return;
+    }
+    sk_sp<SkImage> decodedImage = SkImage::MakeFromBitmap(bitmap);
+
+    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
+                                                           kMedium_SkFilterQuality, 0);
+    DrawDeferredTextureImageMipMapTree(canvas, decodedImage.get(), &params, kN32_SkColorType);
+}
+
+#endif