Allow creating a gpu channel that uses software rendering

Where supported (on ANGLE with EGL_ANGLE_software_display), allow for the creation of gpu channels that use software rendering instead of hardware rendering. 

BUG=
TEST=trybots, other later tests
TBR=apatrick


Review URL: http://codereview.chromium.org/7471042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@93449 0039d316-1c4b-4281-b951-d872f2087c98

7 files changed, 15 insertions, 8 deletions

diff --git a/gpu/command_buffer/client/gles2_demo.cc b/gpu/command_buffer/client/gles2_demo.cc
index c9595df..f981b1b 100644
--- a/gpu/command_buffer/client/gles2_demo.cc
+++ b/gpu/command_buffer/client/gles2_demo.cc
@@ -61,6 +61,7 @@ bool GLES2Demo::Setup(void* hwnd, int32 size) {
                                                  NULL);
   if (!gpu_scheduler->Initialize(reinterpret_cast<HWND>(hwnd),
                                  gfx::Size(),
+                                 false,
                                  gpu::gles2::DisallowedExtensions(),
                                  NULL,
                                  std::vector<int32>(),
diff --git a/gpu/command_buffer/service/gpu_scheduler.h b/gpu/command_buffer/service/gpu_scheduler.h
index eedae30..d34e67f 100644
--- a/gpu/command_buffer/service/gpu_scheduler.h
+++ b/gpu/command_buffer/service/gpu_scheduler.h
@@ -63,6 +63,7 @@ class GpuScheduler : public CommandBufferEngine {
   // Perform platform specific and common initialization.
   bool Initialize(gfx::PluginWindowHandle hwnd,
                   const gfx::Size& size,
+                  bool software,
                   const gles2::DisallowedExtensions& disallowed_extensions,
                   const char* allowed_extensions,
                   const std::vector<int32>& attribs,
diff --git a/gpu/command_buffer/service/gpu_scheduler_linux.cc b/gpu/command_buffer/service/gpu_scheduler_linux.cc
index 1c6c8e9..fcbbd65 100644
--- a/gpu/command_buffer/service/gpu_scheduler_linux.cc
+++ b/gpu/command_buffer/service/gpu_scheduler_linux.cc
@@ -21,6 +21,7 @@ namespace gpu {
 bool GpuScheduler::Initialize(
     gfx::PluginWindowHandle window,
     const gfx::Size& size,
+    bool software,
     const gles2::DisallowedExtensions& disallowed_extensions,
     const char* allowed_extensions,
     const std::vector<int32>& attribs,
@@ -28,12 +29,13 @@ bool GpuScheduler::Initialize(
   // Create either a view or pbuffer based GLSurface.
   scoped_refptr<gfx::GLSurface> surface;
 #if defined(TOUCH_UI)
-  surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
+  surface = gfx::GLSurface::CreateOffscreenGLSurface(software, gfx::Size(1, 1));
 #else
   if (window)
-    surface = gfx::GLSurface::CreateViewGLSurface(window);
+    surface = gfx::GLSurface::CreateViewGLSurface(software, window);
   else
-    surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
+    surface = gfx::GLSurface::CreateOffscreenGLSurface(software,
+                                                       gfx::Size(1, 1));
 #endif
 
   if (!surface.get()) {
diff --git a/gpu/command_buffer/service/gpu_scheduler_mac.cc b/gpu/command_buffer/service/gpu_scheduler_mac.cc
index 2835088..cfa0d5c 100644
--- a/gpu/command_buffer/service/gpu_scheduler_mac.cc
+++ b/gpu/command_buffer/service/gpu_scheduler_mac.cc
@@ -14,12 +14,13 @@ namespace gpu {
 bool GpuScheduler::Initialize(
     gfx::PluginWindowHandle window,
     const gfx::Size& size,
+    bool software,
     const gles2::DisallowedExtensions& disallowed_extensions,
     const char* allowed_extensions,
     const std::vector<int32>& attribs,
     gfx::GLShareGroup* share_group) {
   scoped_refptr<gfx::GLSurface> surface(
-      gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1)));
+      gfx::GLSurface::CreateOffscreenGLSurface(software, gfx::Size(1, 1)));
   if (!surface.get()) {
     LOG(ERROR) << "CreateOffscreenGLSurface failed.\n";
     Destroy();
diff --git a/gpu/command_buffer/service/gpu_scheduler_win.cc b/gpu/command_buffer/service/gpu_scheduler_win.cc
index 20e5382..84f2b83 100644
--- a/gpu/command_buffer/service/gpu_scheduler_win.cc
+++ b/gpu/command_buffer/service/gpu_scheduler_win.cc
@@ -16,6 +16,7 @@ namespace gpu {
 bool GpuScheduler::Initialize(
     gfx::PluginWindowHandle window,
     const gfx::Size& size,
+    bool software,
     const gles2::DisallowedExtensions& disallowed_extensions,
     const char* allowed_extensions,
     const std::vector<int32>& attribs,
@@ -23,9 +24,10 @@ bool GpuScheduler::Initialize(
   // Create either a view or pbuffer based GLSurface.
   scoped_refptr<gfx::GLSurface> surface;
   if (window) {
-    surface = gfx::GLSurface::CreateViewGLSurface(window);
+    surface = gfx::GLSurface::CreateViewGLSurface(software, window);
   } else {
-    surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
+    surface = gfx::GLSurface::CreateOffscreenGLSurface(software,
+                                                       gfx::Size(1, 1));
   }
 
   if (!surface.get()) {
diff --git a/gpu/demos/framework/window.cc b/gpu/demos/framework/window.cc
index 30ba86c..f609a55 100644
--- a/gpu/demos/framework/window.cc
+++ b/gpu/demos/framework/window.cc
@@ -61,7 +61,7 @@ bool Window::CreateRenderContext(gfx::PluginWindowHandle hwnd) {
 
   GpuScheduler* gpu_scheduler(
       new GpuScheduler(command_buffer.get(), NULL, NULL));
-  if (!gpu_scheduler->Initialize(hwnd, gfx::Size(),
+  if (!gpu_scheduler->Initialize(hwnd, gfx::Size(), false,
                                  gpu::gles2::DisallowedExtensions(),
                                  NULL, std::vector<int32>(),
                                  NULL)) {
diff --git a/gpu/gles2_conform_support/egl/display.cc b/gpu/gles2_conform_support/egl/display.cc
index cfadf0f..63604b9 100644
--- a/gpu/gles2_conform_support/egl/display.cc
+++ b/gpu/gles2_conform_support/egl/display.cc
@@ -111,7 +111,7 @@ EGLSurface Display::CreateWindowSurface(EGLConfig config,
   scoped_ptr<GpuScheduler> gpu_scheduler(
       new GpuScheduler(command_buffer_.get(), NULL, NULL));
   if (!gpu_scheduler->Initialize(
-      win, gfx::Size(), gpu::gles2::DisallowedExtensions(), NULL,
+      win, gfx::Size(), false, gpu::gles2::DisallowedExtensions(), NULL,
       attribs, NULL))
     return EGL_NO_SURFACE;