Added SkImage::MakeCrossContextFromEncoded
Designed for Flutter's threading architecture, with
an eye to being useful to other clients. Under the
hood, uses a new image generator class to lazily wrap
a texture for multiple GrContexts.
Re-land of https://skia-review.googlesource.com/c/14180/
Bug: skia:
Change-Id: I3dd382640629b79b3058f18fee68d043566e43e5
Reviewed-on: https://skia-review.googlesource.com/15895
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index 23c7094..9dd3688 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -1695,6 +1695,11 @@
srcImage = static_cast<GrVkTexture*>(src->asTexture());
}
+ // For borrowed textures, we *only* want to copy using draws (to avoid layout changes)
+ if (srcImage->isBorrowed()) {
+ return false;
+ }
+
if (can_copy_image(dst, src, this)) {
this->copySurfaceAsCopyImage(dst, src, dstImage, srcImage, srcRect, dstPoint);
return true;
@@ -1990,3 +1995,17 @@
resource->ref();
fSemaphoresToWaitOn.push_back(resource);
}
+
+sk_sp<GrSemaphore> GrVkGpu::prepareTextureForCrossContextUsage(GrTexture* texture) {
+ SkASSERT(texture);
+ GrVkTexture* vkTexture = static_cast<GrVkTexture*>(texture);
+ vkTexture->setImageLayout(this,
+ VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
+ VK_ACCESS_SHADER_READ_BIT,
+ VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT,
+ false);
+ this->submitCommandBuffer(kSkip_SyncQueue);
+
+ // The image layout change serves as a barrier, so no semaphore is needed
+ return nullptr;
+}