[Impeller] force software resize usage for GLES backend.

impeller/renderer/backend/gles/capabilities_gles.cc

@@ -158,6 +158,8 @@ bool CapabilitiesGLES::SupportsSSBO() const {
 }
 
 bool CapabilitiesGLES::SupportsTextureToTextureBlits() const {
+  // TODO(158388): switch this to true for improved performance
+  // on GLES 3.0+ devices.
   return false;
 }
 

lib/ui/painting/image_decoder_impeller.cc

@@ -114,6 +114,7 @@ DecompressResult ImageDecoderImpeller::DecompressTexture(
     SkISize target_size,
     impeller::ISize max_texture_size,
     bool supports_wide_gamut,
+    const std::shared_ptr<const impeller::Capabilities>& capabilities,
     const std::shared_ptr<impeller::Allocator>& allocator) {
   TRACE_EVENT0("impeller", __FUNCTION__);
   if (!descriptor) {
@@ -238,7 +239,8 @@ DecompressResult ImageDecoderImpeller::DecompressTexture(
           : std::optional<SkImageInfo>(image_info.makeDimensions(target_size));
 
   if (source_size.width() > max_texture_size.width ||
-      source_size.height() > max_texture_size.height) {
+      source_size.height() > max_texture_size.height ||
+      !capabilities->SupportsTextureToTextureBlits()) {
     //----------------------------------------------------------------------------
     /// 2. If the decoded image isn't the requested target size and the src size
     ///    exceeds the device max texture size, perform a slow CPU reisze.
@@ -529,7 +531,8 @@ void ImageDecoderImpeller::Decode(fml::RefPtr<ImageDescriptor> descriptor,
         // Always decompress on the concurrent runner.
         auto bitmap_result = DecompressTexture(
             raw_descriptor, target_size, max_size_supported,
-            supports_wide_gamut, context->GetResourceAllocator());
+            /*supports_wide_gamut=*/supports_wide_gamut,
+            context->GetCapabilities(), context->GetResourceAllocator());
         if (!bitmap_result.device_buffer) {
           result(nullptr, bitmap_result.decode_error);
           return;

lib/ui/painting/image_decoder_impeller.h

@@ -11,6 +11,7 @@
 #include "flutter/lib/ui/painting/image_decoder.h"
 #include "impeller/core/formats.h"
 #include "impeller/geometry/size.h"
+#include "impeller/renderer/capabilities.h"
 #include "include/core/SkImageInfo.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
@@ -68,6 +69,7 @@ class ImageDecoderImpeller final : public ImageDecoder {
       SkISize target_size,
       impeller::ISize max_texture_size,
       bool supports_wide_gamut,
+      const std::shared_ptr<const impeller::Capabilities>& capabilities,
       const std::shared_ptr<impeller::Allocator>& allocator);
 
   /// @brief Create a device private texture from the provided host buffer.

lib/ui/painting/image_decoder_no_gl_unittests.cc

@@ -3,8 +3,10 @@
 // found in the LICENSE file.
 
 #include "flutter/lib/ui/painting/image_decoder_no_gl_unittests.h"
+#include <memory>
 
 #include "flutter/fml/endianness.h"
+#include "impeller/renderer/capabilities.h"
 #include "include/core/SkColorType.h"
 
 namespace flutter {
@@ -80,6 +82,10 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutDisplayP3) {
 #endif
   auto data = flutter::testing::OpenFixtureAsSkData("DisplayP3Logo.png");
   auto image = SkImages::DeferredFromEncodedData(data);
+  std::shared_ptr<impeller::Capabilities> capabilities =
+      impeller::CapabilitiesBuilder()
+          .SetSupportsTextureToTextureBlits(true)
+          .Build();
   ASSERT_TRUE(image != nullptr);
   ASSERT_EQ(SkISize::Make(100, 100), image->dimensions());
 
@@ -100,7 +106,7 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutDisplayP3) {
   std::optional<DecompressResult> wide_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true, capabilities, allocator);
   ASSERT_TRUE(wide_result.has_value());
   ASSERT_EQ(wide_result->image_info.colorType(), kRGBA_F16_SkColorType);
   ASSERT_TRUE(wide_result->image_info.colorSpace()->isSRGB());
@@ -124,7 +130,7 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutDisplayP3) {
   std::optional<DecompressResult> narrow_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/false, allocator);
+          /*supports_wide_gamut=*/false, capabilities, allocator);
 
   ASSERT_TRUE(narrow_result.has_value());
   ASSERT_EQ(narrow_result->image_info.colorType(), kRGBA_8888_SkColorType);
@@ -137,6 +143,10 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutIndexedPng) {
 #endif
   auto data = flutter::testing::OpenFixtureAsSkData("WideGamutIndexed.png");
   auto image = SkImages::DeferredFromEncodedData(data);
+  std::shared_ptr<impeller::Capabilities> capabilities =
+      impeller::CapabilitiesBuilder()
+          .SetSupportsTextureToTextureBlits(true)
+          .Build();
   ASSERT_TRUE(image != nullptr);
   ASSERT_EQ(SkISize::Make(100, 100), image->dimensions());
 
@@ -157,7 +167,7 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutIndexedPng) {
   std::optional<DecompressResult> wide_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true, capabilities, allocator);
   ASSERT_EQ(wide_result->image_info.colorType(), kBGR_101010x_XR_SkColorType);
   ASSERT_TRUE(wide_result->image_info.colorSpace()->isSRGB());
 
@@ -180,7 +190,7 @@ TEST(ImageDecoderNoGLTest, ImpellerWideGamutIndexedPng) {
   std::optional<DecompressResult> narrow_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/false, allocator);
+          /*supports_wide_gamut=*/false, capabilities, allocator);
 
   ASSERT_TRUE(narrow_result.has_value());
   ASSERT_EQ(narrow_result->image_info.colorType(), kRGBA_8888_SkColorType);
@@ -193,6 +203,10 @@ TEST(ImageDecoderNoGLTest, ImepllerUnmultipliedAlphaPng) {
 #endif
   auto data = flutter::testing::OpenFixtureAsSkData("unmultiplied_alpha.png");
   auto image = SkImages::DeferredFromEncodedData(data);
+  std::shared_ptr<impeller::Capabilities> capabilities =
+      impeller::CapabilitiesBuilder()
+          .SetSupportsTextureToTextureBlits(false)
+          .Build();
   ASSERT_TRUE(image != nullptr);
   ASSERT_EQ(SkISize::Make(11, 11), image->dimensions());
 
@@ -210,7 +224,7 @@ TEST(ImageDecoderNoGLTest, ImepllerUnmultipliedAlphaPng) {
   std::optional<DecompressResult> result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(11, 11), {11, 11},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true, capabilities, allocator);
   ASSERT_EQ(result->image_info.colorType(), kRGBA_8888_SkColorType);
 
   const SkPixmap& pixmap = result->sk_bitmap->pixmap();

lib/ui/painting/image_decoder_unittests.cc

@@ -446,7 +446,8 @@ TEST_F(ImageDecoderFixtureTest, ImpellerNullColorspace) {
   std::optional<DecompressResult> decompressed =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true,
+          /*force_cpu_resize=*/false, allocator);
   ASSERT_TRUE(decompressed.has_value());
   ASSERT_EQ(decompressed->image_info.colorType(), kRGBA_8888_SkColorType);
   ASSERT_EQ(decompressed->image_info.colorSpace(), nullptr);
@@ -473,7 +474,8 @@ TEST_F(ImageDecoderFixtureTest, ImpellerPixelConversion32F) {
   std::optional<DecompressResult> decompressed =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true,
+          /*force_cpu_resize=*/false, allocator);
 
   ASSERT_TRUE(decompressed.has_value());
   ASSERT_EQ(decompressed->image_info.colorType(), kRGBA_F16_SkColorType);
@@ -501,7 +503,7 @@ TEST_F(ImageDecoderFixtureTest, ImpellerWideGamutDisplayP3Opaque) {
   std::optional<DecompressResult> wide_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true, /*force_cpu_resize=*/false, allocator);
 
   ASSERT_TRUE(wide_result.has_value());
   ASSERT_EQ(wide_result->image_info.colorType(), kBGR_101010x_XR_SkColorType);
@@ -526,7 +528,7 @@ TEST_F(ImageDecoderFixtureTest, ImpellerWideGamutDisplayP3Opaque) {
   std::optional<DecompressResult> narrow_result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(100, 100), {100, 100},
-          /*supports_wide_gamut=*/false, allocator);
+          /*supports_wide_gamut=*/false, /*force_cpu_resize=*/false, allocator);
 
   ASSERT_TRUE(narrow_result.has_value());
   ASSERT_EQ(narrow_result->image_info.colorType(), kRGBA_8888_SkColorType);
@@ -553,7 +555,7 @@ TEST_F(ImageDecoderFixtureTest, ImpellerNonWideGamut) {
   std::optional<DecompressResult> result =
       ImageDecoderImpeller::DecompressTexture(
           descriptor.get(), SkISize::Make(600, 200), {600, 200},
-          /*supports_wide_gamut=*/true, allocator);
+          /*supports_wide_gamut=*/true, /*force_cpu_resize=*/false, allocator);
 
   ASSERT_TRUE(result.has_value());
   ASSERT_EQ(result->image_info.colorType(), kRGBA_8888_SkColorType);
@@ -802,31 +804,46 @@ TEST(ImageDecoderTest, VerifySimpleDecoding) {
   EXPECT_EQ(compressed_image->alphaType(), kOpaque_SkAlphaType);
 
 #if IMPELLER_SUPPORTS_RENDERING
+  std::shared_ptr<impeller::Capabilities> capabilities =
+      impeller::CapabilitiesBuilder()
+          .SetSupportsTextureToTextureBlits(true)
+          .Build();
+  std::shared_ptr<impeller::Capabilities> capabilities_no_blit =
+      impeller::CapabilitiesBuilder()
+          .SetSupportsTextureToTextureBlits(false)
+          .Build();
   // Bitmap sizes reflect the original image size as resizing is done on the
   // GPU if the src size is smaller than the max texture size.
   std::shared_ptr<impeller::Allocator> allocator =
       std::make_shared<impeller::TestImpellerAllocator>();
   auto result_1 = ImageDecoderImpeller::DecompressTexture(
       descriptor.get(), SkISize::Make(6, 2), {1000, 1000},
-      /*supports_wide_gamut=*/false, allocator);
+      /*supports_wide_gamut=*/false, capabilities, allocator);
   EXPECT_EQ(result_1.sk_bitmap->width(), 75);
   EXPECT_EQ(result_1.sk_bitmap->height(), 25);
 
   // Bitmap sizes reflect the scaled size if the source size is larger than
   // max texture size even if destination size isn't max texture size.
   auto result_2 = ImageDecoderImpeller::DecompressTexture(
       descriptor.get(), SkISize::Make(6, 2), {10, 10},
-      /*supports_wide_gamut=*/false, allocator);
+      /*supports_wide_gamut=*/false, capabilities, allocator);
   EXPECT_EQ(result_2.sk_bitmap->width(), 6);
   EXPECT_EQ(result_2.sk_bitmap->height(), 2);
 
   // If the destination size is larger than the max texture size the image
   // is scaled down.
   auto result_3 = ImageDecoderImpeller::DecompressTexture(
       descriptor.get(), SkISize::Make(60, 20), {10, 10},
-      /*supports_wide_gamut=*/false, allocator);
+      /*supports_wide_gamut=*/false, capabilities, allocator);
   EXPECT_EQ(result_3.sk_bitmap->width(), 10);
   EXPECT_EQ(result_3.sk_bitmap->height(), 10);
+
+  // CPU resize is forced.
+  auto result_4 = ImageDecoderImpeller::DecompressTexture(
+      descriptor.get(), SkISize::Make(6, 2), {1000, 1000},
+      /*supports_wide_gamut=*/false, capabilities_no_blit, allocator);
+  EXPECT_EQ(result_4.sk_bitmap->width(), 6);
+  EXPECT_EQ(result_4.sk_bitmap->height(), 2);
 #endif  // IMPELLER_SUPPORTS_RENDERING
 }