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Unified Diff: ui/gfx/gl/gl_implementation_wayland.cc

Issue 7467007: Adding Wayland support for ui/gfx (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: Replaced the way WaylandDisplay is being retrieved Created 9 years, 5 months ago
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Index: ui/gfx/gl/gl_implementation_wayland.cc
diff --git a/ui/gfx/gl/gl_implementation_wayland.cc b/ui/gfx/gl/gl_implementation_wayland.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e9879e5661009f66fa8e9d6ac9f4e97b86301a78
--- /dev/null
+++ b/ui/gfx/gl/gl_implementation_wayland.cc
@@ -0,0 +1,108 @@
+// 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.
+
jonathan.backer 2011/07/26 14:56:27 This seems very similar to gl_implementation_linux
+#include <vector>
+
+#include "base/base_paths.h"
+#include "base/command_line.h"
+#include "base/file_path.h"
+#include "base/logging.h"
+#include "base/native_library.h"
+#include "base/path_service.h"
+#include "ui/gfx/gl/gl_bindings.h"
+#include "ui/gfx/gl/gl_implementation.h"
+
+namespace gfx {
+namespace {
+
+// TODO(piman): it should be Desktop GL marshalling from double to float. Today
+// on native GLES, we do float->double->float.
+void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
+ glClearDepthf(static_cast<GLclampf>(depth));
+}
+
+void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
+ GLclampd z_far) {
+ glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
+}
+
+// Load a library, printing an error message on failure.
+base::NativeLibrary LoadLibrary(const FilePath& filename) {
+ std::string error;
+ base::NativeLibrary library = base::LoadNativeLibrary(filename,
+ &error);
+ if (!library) {
+ VLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
+ return NULL;
+ }
+ return library;
+}
+
+base::NativeLibrary LoadLibrary(const char* filename) {
+ return LoadLibrary(FilePath(filename));
+}
+
+} // namespace anonymous
+
+bool InitializeGLBindings(GLImplementation implementation) {
+ // Prevent reinitialization with a different implementation. Once the gpu
+ // unit tests have initialized with kGLImplementationMock, we don't want to
+ // later switch to another GL implementation.
+ if (GetGLImplementation() != kGLImplementationNone)
+ return true;
+
+ switch (implementation) {
+ case kGLImplementationEGLGLES2: {
+ base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so");
+ if (!gles_library)
+ return false;
+ base::NativeLibrary egl_library = LoadLibrary("libEGL.so");
+ if (!egl_library)
+ return false;
+
+ GLGetProcAddressProc get_proc_address =
+ reinterpret_cast<GLGetProcAddressProc>(
+ base::GetFunctionPointerFromNativeLibrary(
+ egl_library, "eglGetProcAddress"));
+ if (!get_proc_address) {
+ LOG(ERROR) << "eglGetProcAddress not found.";
+ base::UnloadNativeLibrary(egl_library);
+ base::UnloadNativeLibrary(gles_library);
+ return false;
+ }
+
+ SetGLGetProcAddressProc(get_proc_address);
+ AddGLNativeLibrary(egl_library);
+ AddGLNativeLibrary(gles_library);
+ SetGLImplementation(kGLImplementationEGLGLES2);
+
+ InitializeGLBindingsGL();
+ InitializeGLBindingsEGL();
+
+ // These two functions take single precision float rather than double
+ // precision float parameters in GLES.
+ ::gfx::g_glClearDepth = MarshalClearDepthToClearDepthf;
+ ::gfx::g_glDepthRange = MarshalDepthRangeToDepthRangef;
+ break;
+ }
+ case kGLImplementationMockGL: {
+ SetGLGetProcAddressProc(GetMockGLProcAddress);
+ SetGLImplementation(kGLImplementationMockGL);
+ InitializeGLBindingsGL();
+ break;
+ }
+ default:
+ return false;
+ }
+
+
+ return true;
+}
+
+void InitializeDebugGLBindings() {
+ InitializeDebugGLBindingsEGL();
+ InitializeDebugGLBindingsGL();
+}
+
+} // namespace gfx

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