Move OpenGL ES 2.0 conformance test support into main tree

gpu/gles2_conform_support/egl/display.cc

Index: gpu/gles2_conform_support/egl/display.cc
diff --git a/gpu/gles2_conform_support/egl/display.cc b/gpu/gles2_conform_support/egl/display.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7bfded1cde53dea5c27b4a4822125473fa3ae4d7
--- /dev/null
+++ b/gpu/gles2_conform_support/egl/display.cc
@@ -0,0 +1,187 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gpu/gles2_conform_support/egl/display.h"
+
+#include <vector>
+#include "gpu/command_buffer/client/gles2_lib.h"
+#include "gpu/command_buffer/service/command_buffer_service.h"
+#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
+#include "gpu/command_buffer/service/gpu_scheduler.h"
+#include "gpu/GLES2/gles2_command_buffer.h"
+#include "gpu/gles2_conform_support/egl/config.h"
+#include "gpu/gles2_conform_support/egl/surface.h"
+
+namespace {
+const int32 kCommandBufferSize = 1024 * 1024;
+const int32 kTransferBufferSize = 512 * 1024;
+}
+
+namespace egl {
+
+Display::Display(EGLNativeDisplayType display_id)
+    : display_id_(display_id),
+      is_initialized_(false),
+      transfer_buffer_id_(-1) {
+}
+
+Display::~Display() {
+  gles2::Terminate();
+}
+
+bool Display::Initialize() {
+  using gpu::CommandBufferService;
+  scoped_ptr<CommandBufferService> command_buffer(new CommandBufferService);
+  if (!command_buffer->Initialize(kCommandBufferSize))
+    return false;
+
+  using gpu::Buffer;
+  int32 transfer_buffer_id =
+      command_buffer->CreateTransferBuffer(kTransferBufferSize, -1);
+  Buffer transfer_buffer =
+      command_buffer->GetTransferBuffer(transfer_buffer_id);
+  if (transfer_buffer.ptr == NULL)
+    return false;
+
+  using gpu::gles2::GLES2CmdHelper;
+  scoped_ptr<GLES2CmdHelper> cmd_helper(
+      new GLES2CmdHelper(command_buffer.get()));
+  if (!cmd_helper->Initialize(kCommandBufferSize))
+    return false;
+
+  gles2::Initialize();
+
+  is_initialized_ = true;
+  command_buffer_.reset(command_buffer.release());
+  transfer_buffer_id_ = transfer_buffer_id;
+  gles2_cmd_helper_.reset(cmd_helper.release());
+  return true;
+}
+
+bool Display::IsValidConfig(EGLConfig config) {
+  return (config != NULL) && (config == config_.get());
+}
+
+bool Display::GetConfigs(EGLConfig* configs,
+                         EGLint config_size,
+                         EGLint* num_config) {
+  // TODO(alokp): Find out a way to find all configs. CommandBuffer currently
+  // does not support finding or choosing configs.
+  *num_config = 1;
+  if (configs != NULL) {
+    if (config_ == NULL) {
+      config_.reset(new Config);
+    }
+    configs[0] = config_.get();
+  }
+  return true;
+}
+
+bool Display::GetConfigAttrib(EGLConfig config,
+                              EGLint attribute,
+                              EGLint* value) {
+  const egl::Config* cfg = static_cast<egl::Config*>(config);
+  return cfg->GetAttrib(attribute, value);
+}
+
+bool Display::IsValidNativeWindow(EGLNativeWindowType win) {
+#if defined OS_WIN
+  return ::IsWindow(win) != FALSE;
+#else
+  // TODO(alokp): Validate window handle.
+  return true;
+#endif  // OS_WIN
+}
+
+bool Display::IsValidSurface(EGLSurface surface) {
+  return (surface != NULL) && (surface == surface_.get());
+}
+
+EGLSurface Display::CreateWindowSurface(EGLConfig config,
+                                        EGLNativeWindowType win,
+                                        const EGLint* attrib_list) {
+  if (surface_ != NULL) {
+    // We do not support more than one window surface.
+    return EGL_NO_SURFACE;
+  }
+
+  using gpu::GpuScheduler;
+  std::vector<int32> attribs;
+  scoped_ptr<GpuScheduler> gpu_scheduler(
+      new GpuScheduler(command_buffer_.get(), NULL));
+  if (!gpu_scheduler->Initialize(
+      win, gfx::Size(), gpu::gles2::DisallowedExtensions(), NULL,
+      attribs, NULL, 0))
+    return EGL_NO_SURFACE;
+
+  command_buffer_->SetPutOffsetChangeCallback(
+      NewCallback(gpu_scheduler.get(), &GpuScheduler::PutChanged));
+  gpu_scheduler_.reset(gpu_scheduler.release());
+  surface_.reset(new Surface(win));
+
+  return surface_.get();
+}
+
+void Display::DestroySurface(EGLSurface surface) {
+  DCHECK(IsValidSurface(surface));
+  gpu_scheduler_.reset();
+  surface_.reset();
+}
+
+void Display::SwapBuffers(EGLSurface surface) {
+  DCHECK(IsValidSurface(surface));
+  context_->SwapBuffers();
+}
+
+bool Display::IsValidContext(EGLContext ctx) {
+  return (ctx != NULL) && (ctx == context_.get());
+}
+
+EGLContext Display::CreateContext(EGLConfig config,
+                                  EGLContext share_ctx,
+                                  const EGLint* attrib_list) {
+  DCHECK(IsValidConfig(config));
+  // TODO(alokp): Command buffer does not support shared contexts.
+  if (share_ctx != NULL)
+    return EGL_NO_CONTEXT;
+
+  DCHECK(command_buffer_ != NULL);
+  DCHECK(transfer_buffer_id_ != -1);
+  gpu::Buffer buffer = command_buffer_->GetTransferBuffer(transfer_buffer_id_);
+  DCHECK(buffer.ptr != NULL);
+  bool share_resources = share_ctx != NULL;
+  using gpu::gles2::GLES2Implementation;
+  context_.reset(new GLES2Implementation(
+      gles2_cmd_helper_.get(),
+      buffer.size,
+      buffer.ptr,
+      transfer_buffer_id_,
+      share_resources));
+
+  context_->CommandBufferEnableCHROMIUM(
+      PEPPER3D_ALLOW_BUFFERS_ON_MULTIPLE_TARGETS);
+  context_->CommandBufferEnableCHROMIUM(
+      PEPPER3D_SUPPORT_FIXED_ATTRIBS);
+
+  return context_.get();
+}
+
+void Display::DestroyContext(EGLContext ctx) {
+  DCHECK(IsValidContext(ctx));
+  context_.reset();
+}
+
+bool Display::MakeCurrent(EGLSurface draw, EGLSurface read, EGLContext ctx) {
+  if (ctx == EGL_NO_CONTEXT) {
+    gles2::SetGLContext(NULL);
+  } else {
+    DCHECK(IsValidSurface(draw));
+    DCHECK(IsValidSurface(read));
+    DCHECK(IsValidContext(ctx));
+    gles2::SetGLContext(context_.get());
+  }
+  return true;
+}
+
+}  // namespace egl