Allow caller to specify if the want mip maps in makeTextureImage call.

Since Ganesh no longer will allocate mips late, this gives the clients a
way to tell skia that they want the texture they will be using to have mips.
It also supports allowing a client to take a non mipped texture backed
image and turn it into a new image which is mipped and texture backed.

Bug: chromium:834837
Change-Id: I1781ce618c22023b6309f248e7ee49e69bd3c6df
Reviewed-on: https://skia-review.googlesource.com/134323
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gpu/GrTextureProducer.cpp b/src/gpu/GrTextureProducer.cpp
index 1e9c3acd16..59962c55b1 100644
--- a/src/gpu/GrTextureProducer.cpp
+++ b/src/gpu/GrTextureProducer.cpp
@@ -235,3 +235,18 @@ sk_sp<GrTextureProxy> GrTextureProducer::refTextureProxyForParams(
              (result->width() == this->width() && result->height() == this->height()));
     return result;
 }
+
+sk_sp<GrTextureProxy> GrTextureProducer::refTextureProxy(GrMipMapped willNeedMips,
+                                                         SkColorSpace* dstColorSpace,
+                                                         sk_sp<SkColorSpace>* proxyColorSpace) {
+    GrSamplerState::Filter filter =
+            GrMipMapped::kNo == willNeedMips ? GrSamplerState::Filter::kNearest
+                                             : GrSamplerState::Filter::kMipMap;
+    GrSamplerState sampler(GrSamplerState::WrapMode::kClamp, filter);
+    auto result =
+            this->onRefTextureProxyForParams(sampler, dstColorSpace, proxyColorSpace, nullptr);
+
+    // Check that no scaling occured and we returned a proxy of the same size as the producer.
+    SkASSERT(!result || (result->width() == this->width() && result->height() == this->height()));
+    return result;
+}