Fixed tough texture upload benchmark on low end devices.

Fast extra shared memory texture upload path is now disabled for low
end devices, they don't have enough memory to allocate this.

R=sievers@chromium.org
BUG=543067, 462078

Review URL: https://codereview.chromium.org/1408843002

Cr-Commit-Position: refs/heads/master@{#354797}

1 files changed, 14 insertions, 2 deletions

diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index e91bbd6..72df5bb 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -17,6 +17,7 @@
 #include <string>
 #include "base/compiler_specific.h"
 #include "base/strings/stringprintf.h"
+#include "base/sys_info.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/memory_allocator_dump.h"
 #include "base/trace_event/memory_dump_manager.h"
@@ -111,6 +112,17 @@ GLES2Implementation::GLES2Implementation(
       lose_context_when_out_of_memory_(lose_context_when_out_of_memory),
       support_client_side_arrays_(support_client_side_arrays),
       use_count_(0),
+      max_extra_transfer_buffer_size_(
+#if defined(OS_NACL)
+          0),
+#else
+          // Do not use more than 5% of extra shared memory, and do not
+          // use any extra for memory contrained devices (<=1GB).
+          base::SysInfo::AmountOfPhysicalMemory() > 1024 * 1024 * 1024
+              ? base::saturated_cast<uint32_t>(
+                    base::SysInfo::AmountOfPhysicalMemory() / 20)
+              : 0),
+#endif
       error_message_callback_(NULL),
       current_trace_stack_(0),
       gpu_control_(gpu_control),
@@ -2306,7 +2318,7 @@ void GLES2Implementation::TexImage2D(
     shm_id = transfer_alloc.shm_id();
     shm_offset = transfer_alloc.offset();
     buffer_pointer = transfer_alloc.address();
-  } else {
+  } else if (size < max_extra_transfer_buffer_size_) {
     mapped_alloc.Reset(size);
     if (mapped_alloc.valid()) {
       transfer_alloc.Discard();
@@ -2432,7 +2444,7 @@ void GLES2Implementation::TexImage3D(
     shm_id = transfer_alloc.shm_id();
     shm_offset = transfer_alloc.offset();
     buffer_pointer = transfer_alloc.address();
-  } else {
+  } else if (size < max_extra_transfer_buffer_size_) {
     mapped_alloc.Reset(size);
     if (mapped_alloc.valid()) {
       transfer_alloc.Discard();