skia2/gm/deferredtextureimage.cpp
cblume 33e0cb5e7f Store mipmap levels in deferred texture image
This is a follow-up to https://codereview.chromium.org/2115023002/ and
https://codereview.chromium.org/2034933003/ which were reverted due to
an access violation and a memory leak, respectively.

When creating the deferred texture image, detect if using medium / high
quality. If so, generate and store mipmaps in the deferred texture
image.

When creating a texture from that be sure to read it back out.

BUG=578304
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242883004

Review-Url: https://codereview.chromium.org/2242883004
2016-08-30 12:09:23 -07:00

186 lines
6.9 KiB
C++

/*
* 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 "GrContext.h"
#include "SkMipMap.h"
#include "Resources.h"
#if SK_SUPPORT_GPU
// Helper function that uploads the given SkImage using MakdeFromDeferredTextureImageData and then
// draws the uploaded version at the specified coordinates.
static void DrawDeferredTextureImageData(SkCanvas* canvas,
SkImage::DeferredTextureImageUsageParams* params) {
GrContext* context = canvas->getGrContext();
if (!context) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
SkAutoTUnref<GrContextThreadSafeProxy> proxy(context->threadSafeProxy());
sk_sp<SkImage> encodedImage = GetResourceAsImage("mandrill_512.png");
if (!encodedImage) {
SkDebugf("\nCould not load resource.\n");
return;
}
size_t requiredMemoryInBytes = encodedImage->getDeferredTextureImageData(
*proxy, params, 1, nullptr, SkSourceGammaTreatment::kRespect);
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(), SkSourceGammaTreatment::kRespect);
sk_sp<SkImage> uploadedEncodedImage = SkImage::MakeFromDeferredTextureImageData(
context, memory.data(), SkBudgeted::kNo);
canvas->drawImage(uploadedEncodedImage, 10, 10);
SkBitmap bitmap;
if (!GetResourceAsBitmap("mandrill_512.png", &bitmap)) {
SkDebugf("\nCould not decode resource.\n");
return;
}
sk_sp<SkImage> decodedImage = SkImage::MakeFromBitmap(bitmap);
requiredMemoryInBytes = decodedImage->getDeferredTextureImageData(
*proxy, params, 1, nullptr, SkSourceGammaTreatment::kRespect);
if (requiredMemoryInBytes == 0) {
SkDebugf("\nCould not create DeferredTextureImageData.\n");
return;
}
memory.resize(requiredMemoryInBytes);
decodedImage->getDeferredTextureImageData(
*proxy, params, 1, memory.data(), SkSourceGammaTreatment::kRespect);
sk_sp<SkImage> uploadedDecodedImage = SkImage::MakeFromDeferredTextureImageData(
context, memory.data(), SkBudgeted::kNo);
canvas->drawImage(uploadedDecodedImage, 512 + 20, 10);
}
static void DrawDeferredTextureImageMipMapTree(SkCanvas* canvas, SkImage* image,
SkImage::DeferredTextureImageUsageParams* params) {
GrContext* context = canvas->getGrContext();
if (!context) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
SkAutoTUnref<GrContextThreadSafeProxy> proxy(context->threadSafeProxy());
SkPaint paint;
paint.setFilterQuality(params->fQuality);
int mipLevelCount = SkMipMap::ComputeLevelCount(512, 512);
size_t requiredMemoryInBytes = image->getDeferredTextureImageData(
*proxy, params, 1, nullptr, SkSourceGammaTreatment::kRespect);
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(), SkSourceGammaTreatment::kRespect);
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 += 512 + 10;
// handle generated mipmap levels
for (int i = 0; i < mipLevelCount; i++) {
SkISize mipSize = SkMipMap::ComputeLevelSize(512, 512, i);
canvas->save();
canvas->translate(10.f, offsetHeight);
canvas->scale(mipSize.width() / 512.f, mipSize.height() / 512.f);
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(512.f + 20.f, offsetHeight);
canvas->drawImage(image, 0, 0, &paint);
canvas->restore();
offsetHeight += 512 + 10;
// handle generated mipmap levels
for (int i = 0; i < mipLevelCount; i++) {
SkISize mipSize = SkMipMap::ComputeLevelSize(512, 512, i);
canvas->save();
canvas->translate(512.f + 20.f, offsetHeight);
canvas->scale(mipSize.width() / 512.f, mipSize.height() / 512.f);
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, &params);
}
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, &params);
}
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);
}
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);
}
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, &params);
}
#endif