Show GpuMemoryBuffer feature in chrome://gpu

content/browser/gpu/gpu_internals_ui.cc

Index: content/browser/gpu/gpu_internals_ui.cc
diff --git a/content/browser/gpu/gpu_internals_ui.cc b/content/browser/gpu/gpu_internals_ui.cc
index c30afe09621e4dde6d2c4af7da5ec1ec8ce58289..70779d81479e919e727d115df00cc7b55ecf9a45 100644
--- a/content/browser/gpu/gpu_internals_ui.cc
+++ b/content/browser/gpu/gpu_internals_ui.cc
@@ -19,6 +19,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/values.h"
+#include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/grit/content_resources.h"
@@ -232,6 +233,89 @@ base::DictionaryValue* GpuInfoAsDictionaryValue() {
   return info;
 }
 
+const char* BufferFormatToString(gfx::BufferFormat format) {
+  switch (format) {
+    case gfx::BufferFormat::ATC:
+      return "ATC";
+    case gfx::BufferFormat::ATCIA:
+      return "ATCIA";
+    case gfx::BufferFormat::DXT1:
+      return "DXT1";
+    case gfx::BufferFormat::DXT5:
+      return "DXT5";
+    case gfx::BufferFormat::ETC1:
+      return "ETC1";
+    case gfx::BufferFormat::R_8:
+      return "R_8";
+    case gfx::BufferFormat::RGBA_4444:
+      return "RGBA_4444";
+    case gfx::BufferFormat::RGBX_8888:
+      return "RGBX_8888";
+    case gfx::BufferFormat::RGBA_8888:
+      return "RGBA_8888";
+    case gfx::BufferFormat::BGRX_8888:
+      return "BGRX_8888";
+    case gfx::BufferFormat::BGRA_8888:
+      return "BGRA_8888";
+    case gfx::BufferFormat::YUV_420:
+      return "YUV_420";
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+      return "YUV_420_BIPLANAR";
+    case gfx::BufferFormat::UYVY_422:
+      return "UYVY_422";
+  }
+  NOTREACHED();
+  return nullptr;
+}
+
+const char* BufferUsageToString(gfx::BufferUsage usage) {
+  switch (usage) {
+    case gfx::BufferUsage::GPU_READ:
+      return "GPU_READ";
+    case gfx::BufferUsage::GPU_READ_WRITE:
+      return "GPU_READ_WRITE";
+    case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE:
+      return "GPU_READ_CPU_READ_WRITE";
+    case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT:
+      return "GPU_READ_CPU_READ_WRITE_PERSISTENT";
+  }
+  NOTREACHED();
+  return nullptr;
+}
+
+base::DictionaryValue* GpuMemoryBufferInfoAsDictionaryValue() {
+  base::ListValue* gpu_memory_buffer_info = new base::ListValue();
+
+  BrowserGpuMemoryBufferManager* gpu_memory_buffer_manager =
+      BrowserGpuMemoryBufferManager::current();
+
+  for (size_t format = 0;
+       format < static_cast<size_t>(gfx::BufferFormat::LAST) + 1; format++) {
+    std::string native_usage_support;
+    for (size_t usage = 0;
+         usage < static_cast<size_t>(gfx::BufferUsage::LAST) + 1; usage++) {
+      if (gpu_memory_buffer_manager->IsNativeGpuMemoryBufferConfiguration(
+              static_cast<gfx::BufferFormat>(format),
+              static_cast<gfx::BufferUsage>(usage)))
+        native_usage_support = base::StringPrintf(
+            "%s%s %s", native_usage_support.c_str(),
+            native_usage_support.empty() ? "" : ",",
+            BufferUsageToString(static_cast<gfx::BufferUsage>(usage)));
+    }
+    if (native_usage_support.empty())
+      native_usage_support = base::StringPrintf("Software only");
+
+    gpu_memory_buffer_info->Append(NewDescriptionValuePair(
+        BufferFormatToString(static_cast<gfx::BufferFormat>(format)),
+        native_usage_support));
+  }
+
+  base::DictionaryValue* info = new base::DictionaryValue();
+  info->Set("gpu_memory_buffer_info", gpu_memory_buffer_info);
+
+  return info;
+}
+
 // This class receives javascript messages from the renderer.
 // Note that the WebUI infrastructure runs on the UI thread, therefore all of
 // this class's methods are expected to run on the UI thread.
@@ -409,6 +493,14 @@ void GpuMessageHandler::OnGpuInfoUpdate() {
   // Send GPU Info to javascript.
   web_ui()->CallJavascriptFunction("browserBridge.onGpuInfoUpdate",
       *(gpu_info_val.get()));
+
+  // Get GpuMemoryBuffer Info.
+  scoped_ptr<base::DictionaryValue> gpu_memory_buffer_info_val(
+      GpuMemoryBufferInfoAsDictionaryValue());
+
+  // Send GpuMemoryBuffer Info to javascript.
+  web_ui()->CallJavascriptFunction("browserBridge.onGpuMemoryBufferInfoUpdate",
+                                   *(gpu_memory_buffer_info_val.get()));
 }
 
 void GpuMessageHandler::OnGpuSwitched() {