Make all shell unit tests use the OpenGL rasterizer. (#9746)

The software backend was used earlier.

shell/common/BUILD.gn

@@ -139,43 +139,46 @@ template("shell_host_executable") {
   }
 }
 
-shell_gpu_configuration("shell_unittests_gpu_configuration") {
-  enable_software = true
-  enable_vulkan = false
-  enable_gl = false
-  enable_metal = false
-}
-
-test_fixtures("shell_unittests_fixtures") {
-  dart_main = "fixtures/shell_test.dart"
-}
-
-shell_host_executable("shell_unittests") {
-  sources = [
-    "pipeline_unittests.cc",
-    "shell_test.cc",
-    "shell_test.h",
-    "shell_unittests.cc",
-  ]
-
-  deps = [
-    ":shell_unittests_fixtures",
-    ":shell_unittests_gpu_configuration",
-    "$flutter_root/common",
-    "$flutter_root/flow",
-    "$flutter_root/shell",
-    "$flutter_root/testing:dart",
-  ]
-}
-
-shell_host_executable("shell_benchmarks") {
-  sources = [
-    "shell_benchmarks.cc",
-  ]
-
-  deps = [
-    ":shell_unittests_fixtures",
-    "$flutter_root/benchmarking",
-    "$flutter_root/testing:testing_lib",
-  ]
+if (current_toolchain == host_toolchain) {
+  shell_gpu_configuration("shell_unittests_gpu_configuration") {
+    enable_software = true
+    enable_vulkan = false
+    enable_gl = true
+    enable_metal = false
+  }
+
+  test_fixtures("shell_unittests_fixtures") {
+    dart_main = "fixtures/shell_test.dart"
+  }
+
+  shell_host_executable("shell_unittests") {
+    sources = [
+      "pipeline_unittests.cc",
+      "shell_test.cc",
+      "shell_test.h",
+      "shell_unittests.cc",
+    ]
+
+    deps = [
+      ":shell_unittests_fixtures",
+      ":shell_unittests_gpu_configuration",
+      "$flutter_root/common",
+      "$flutter_root/flow",
+      "$flutter_root/shell",
+      "$flutter_root/testing:dart",
+      "$flutter_root/testing:opengl",
+    ]
+  }
+
+  shell_host_executable("shell_benchmarks") {
+    sources = [
+      "shell_benchmarks.cc",
+    ]
+
+    deps = [
+      ":shell_unittests_fixtures",
+      "$flutter_root/benchmarking",
+      "$flutter_root/testing:testing_lib",
+    ]
+  }
 }

shell/common/shell_test.cc

@@ -11,6 +11,7 @@
 #include "flutter/fml/make_copyable.h"
 #include "flutter/fml/mapping.h"
 #include "flutter/runtime/dart_vm.h"
+#include "flutter/shell/gpu/gpu_surface_gl.h"
 #include "flutter/testing/testing.h"
 
 namespace flutter {
@@ -200,21 +201,35 @@ ShellTestPlatformView::~ShellTestPlatformView() = default;
 
 // |PlatformView|
 std::unique_ptr<Surface> ShellTestPlatformView::CreateRenderingSurface() {
-  return std::make_unique<GPUSurfaceSoftware>(this);
+  return std::make_unique<GPUSurfaceGL>(this);
 }
 
-// |GPUSurfaceSoftwareDelegate|
-sk_sp<SkSurface> ShellTestPlatformView::AcquireBackingStore(
-    const SkISize& size) {
-  SkImageInfo image_info = SkImageInfo::MakeN32Premul(
-      size.width(), size.height(), SkColorSpace::MakeSRGB());
-  return SkSurface::MakeRaster(image_info);
+// |GPUSurfaceGLDelegate|
+bool ShellTestPlatformView::GLContextMakeCurrent() {
+  return gl_surface_.MakeCurrent();
 }
 
-// |GPUSurfaceSoftwareDelegate|
-bool ShellTestPlatformView::PresentBackingStore(
-    sk_sp<SkSurface> backing_store) {
-  return true;
+// |GPUSurfaceGLDelegate|
+bool ShellTestPlatformView::GLContextClearCurrent() {
+  return gl_surface_.ClearCurrent();
+}
+
+// |GPUSurfaceGLDelegate|
+bool ShellTestPlatformView::GLContextPresent() {
+  return gl_surface_.Present();
+}
+
+// |GPUSurfaceGLDelegate|
+intptr_t ShellTestPlatformView::GLContextFBO() const {
+  return gl_surface_.GetFramebuffer();
+}
+
+// |GPUSurfaceGLDelegate|
+GPUSurfaceGLDelegate::GLProcResolver ShellTestPlatformView::GetGLProcResolver()
+    const {
+  return [surface = &gl_surface_](const char* name) -> void* {
+    return surface->GetProcAddress(name);
+  };
 }
 
 }  // namespace testing

shell/common/shell_test.h

@@ -12,8 +12,9 @@
 #include "flutter/shell/common/run_configuration.h"
 #include "flutter/shell/common/shell.h"
 #include "flutter/shell/common/thread_host.h"
-#include "flutter/shell/gpu/gpu_surface_software.h"
+#include "flutter/shell/gpu/gpu_surface_gl_delegate.h"
 #include "flutter/testing/test_dart_native_resolver.h"
+#include "flutter/testing/test_gl_surface.h"
 #include "flutter/testing/thread_test.h"
 
 namespace flutter {
@@ -66,8 +67,7 @@ class ShellTest : public ThreadTest {
   void SetSnapshotsAndAssets(Settings& settings);
 };
 
-class ShellTestPlatformView : public PlatformView,
-                              public GPUSurfaceSoftwareDelegate {
+class ShellTestPlatformView : public PlatformView, public GPUSurfaceGLDelegate {
  public:
   ShellTestPlatformView(PlatformView::Delegate& delegate,
                         TaskRunners task_runners);
@@ -75,14 +75,25 @@ class ShellTestPlatformView : public PlatformView,
   ~ShellTestPlatformView() override;
 
  private:
+  TestGLSurface gl_surface_;
+
   // |PlatformView|
   std::unique_ptr<Surface> CreateRenderingSurface() override;
 
-  // |GPUSurfaceSoftwareDelegate|
-  virtual sk_sp<SkSurface> AcquireBackingStore(const SkISize& size) override;
+  // |GPUSurfaceGLDelegate|
+  bool GLContextMakeCurrent() override;
 
-  // |GPUSurfaceSoftwareDelegate|
-  virtual bool PresentBackingStore(sk_sp<SkSurface> backing_store) override;
+  // |GPUSurfaceGLDelegate|
+  bool GLContextClearCurrent() override;
+
+  // |GPUSurfaceGLDelegate|
+  bool GLContextPresent() override;
+
+  // |GPUSurfaceGLDelegate|
+  intptr_t GLContextFBO() const override;
+
+  // |GPUSurfaceGLDelegate|
+  GLProcResolver GetGLProcResolver() const override;
 
   FML_DISALLOW_COPY_AND_ASSIGN(ShellTestPlatformView);
 };

testing/test_gl_surface.cc

@@ -203,7 +203,7 @@ bool TestGLSurface::Present() {
   return result == EGL_TRUE;
 }
 
-uint32_t TestGLSurface::GetFramebuffer() {
+uint32_t TestGLSurface::GetFramebuffer() const {
   // Return FBO0
   return 0;
 }
@@ -220,7 +220,7 @@ bool TestGLSurface::MakeResourceCurrent() {
   return result == EGL_TRUE;
 }
 
-void* TestGLSurface::GetProcAddress(const char* name) {
+void* TestGLSurface::GetProcAddress(const char* name) const {
   if (name == nullptr) {
     return nullptr;
   }

testing/test_gl_surface.h

@@ -25,11 +25,11 @@ class TestGLSurface {
 
   bool Present();
 
-  uint32_t GetFramebuffer();
+  uint32_t GetFramebuffer() const;
 
   bool MakeResourceCurrent();
 
-  void* GetProcAddress(const char* name);
+  void* GetProcAddress(const char* name) const;
 
   sk_sp<GrContext> CreateContext();