Create new GLSurface for cross process image transport.

chrome/browser/renderer_host/accelerated_surface_container_touch.cc

 // 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 "chrome/browser/renderer_host/accelerated_surface_container_touch.h"
 
+#include <X11/Xlib.h>
+#include <X11/extensions/Xcomposite.h>
+
+#include "base/memory/scoped_ptr.h"
 #include "third_party/angle/include/EGL/egl.h"
 #include "third_party/angle/include/EGL/eglext.h"
 #include "ui/gfx/gl/gl_bindings.h"
+#include "ui/gfx/gl/gl_implementation.h"
 #include "ui/gfx/gl/gl_surface_egl.h"
+#include "ui/gfx/gl/gl_surface_glx.h"
 #include "ui/gfx/transform.h"
 
-AcceleratedSurfaceContainerTouch::AcceleratedSurfaceContainerTouch(
+namespace {
+
+class AcceleratedSurfaceContainerTouchEGL
+    : public AcceleratedSurfaceContainerTouch {
+ public:
+  AcceleratedSurfaceContainerTouchEGL(ui::CompositorGL* compositor,
+                                      const gfx::Size& size,
+                                      uint64 surface_handle);
+  // TextureGL implementation
+  virtual void Draw(const ui::Transform& transform) OVERRIDE;
+
+ private:
+  ~AcceleratedSurfaceContainerTouchEGL();
+
+  void* image_;
+  DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerTouchEGL);
+};
+
+class AcceleratedSurfaceContainerTouchGLX
+    : public AcceleratedSurfaceContainerTouch {
+ public:
+  AcceleratedSurfaceContainerTouchGLX(ui::CompositorGL* compositor,
+                                      const gfx::Size& size,
+                                      uint64 surface_handle);
+  // TextureGL implementation
+  virtual void Draw(const ui::Transform& transform) OVERRIDE;
+
+ private:
+  ~AcceleratedSurfaceContainerTouchGLX();
+
+  XID pixmap_;
+  XID glx_pixmap_;
+  DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerTouchGLX);
+};
+
+class ScopedPtrXFree {
+ public:
+  void operator()(void* x) const {
+    ::XFree(x);
+  }
+};
+
+AcceleratedSurfaceContainerTouchEGL::AcceleratedSurfaceContainerTouchEGL(
     ui::CompositorGL* compositor,
     const gfx::Size& size,
     uint64 surface_handle)
-    : TextureGL(compositor, size),
+    : AcceleratedSurfaceContainerTouch(compositor, size),
       image_(NULL) {
   compositor_->MakeCurrent();
 
   image_ = eglCreateImageKHR(
       gfx::GLSurfaceEGL::GetDisplay(), EGL_NO_CONTEXT,
       EGL_NATIVE_PIXMAP_KHR, reinterpret_cast<void*>(surface_handle), NULL);
 
   glGenTextures(1, &texture_id_);
   glBindTexture(GL_TEXTURE_2D, texture_id_);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
   glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image_);
   glFlush();
 }
 
-AcceleratedSurfaceContainerTouch::~AcceleratedSurfaceContainerTouch() {
+AcceleratedSurfaceContainerTouchEGL::~AcceleratedSurfaceContainerTouchEGL() {
   eglDestroyImageKHR(gfx::GLSurfaceEGL::GetDisplay(), image_);
   glFlush();
 }
 
-void AcceleratedSurfaceContainerTouch::SetBitmap(
-    const SkBitmap& bitmap,
-    const gfx::Point& origin,
-    const gfx::Size& overall_size) {
-  NOTIMPLEMENTED();
-}
-
-void AcceleratedSurfaceContainerTouch::Draw(const ui::Transform& transform) {
+void AcceleratedSurfaceContainerTouchEGL::Draw(
+    const ui::Transform& transform) {
   DCHECK(compositor_->program_no_swizzle());
 
-  // Texture from GPU is flipped horizontally.
+  // Texture from GPU is flipped vertically.
   ui::Transform flipped;
   flipped.SetScaleY(-1.0);
   flipped.SetTranslateY(size_.height());
   flipped.ConcatTransform(transform);
 
   DrawInternal(*compositor_->program_no_swizzle(), flipped);
 }
+
+AcceleratedSurfaceContainerTouchGLX::AcceleratedSurfaceContainerTouchGLX(
+    ui::CompositorGL* compositor,
+    const gfx::Size& size,
+    uint64 surface_handle)
+    : AcceleratedSurfaceContainerTouch(compositor, size),
+      glx_pixmap_(0) {
+  // Create pixmap from window.
+  Display* dpy = gfx::GLSurfaceGLX::GetDisplay();
+  int event_base, error_base;
+  if (XCompositeQueryExtension(dpy, &event_base, &error_base)) {
+    int major = 0, minor = 2;
+    XCompositeQueryVersion(dpy, &major, &minor);
+    if (major == 0 && minor < 2) {
+      LOG(FATAL) << "Pixmap from window not supported.";
+    }
+  }
+  pixmap_ = XCompositeNameWindowPixmap(dpy, surface_handle);
+
+  // Wrap the pixmap in a GLXPixmap
+  int screen = DefaultScreen(dpy);
+  XWindowAttributes gwa;
+  XGetWindowAttributes(dpy, RootWindow(dpy, screen), &gwa);
+  unsigned int visualid = XVisualIDFromVisual(gwa.visual);
+
+  int nfbconfigs, config;
+  scoped_ptr_malloc<GLXFBConfig, ScopedPtrXFree> fbconfigs(
+      glXGetFBConfigs(dpy, screen, &nfbconfigs));
+
+  for (config = 0; config < nfbconfigs; config++) {
+    XVisualInfo* visinfo = glXGetVisualFromFBConfig(
+        dpy, fbconfigs.get()[config]);
+    if (!visinfo || visinfo->visualid != visualid)
+      continue;
+
+    int value;
+    glXGetFBConfigAttrib(dpy,
+                         fbconfigs.get()[config],
+                         GLX_DRAWABLE_TYPE,
+                         &value);
+    if (!(value & GLX_PIXMAP_BIT))
+      continue;
+
+    glXGetFBConfigAttrib(dpy,
+                         fbconfigs.get()[config],
+                         GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+                         &value);
+    if (!(value & GLX_TEXTURE_2D_BIT_EXT))
+      continue;
+
+    glXGetFBConfigAttrib(dpy,
+                         fbconfigs.get()[config],
+                         GLX_BIND_TO_TEXTURE_RGB_EXT,
+                         &value);
+    if (value == GL_FALSE)
+      continue;
+
+    break;
+  }
+
+  const int pixmapAttribs[] = {
+    GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
+    GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT,
+    0
+  };
+
+  glx_pixmap_ = glXCreatePixmap(
+      dpy, fbconfigs.get()[config], pixmap_, pixmapAttribs);

[apatrick_chromium, 2011/07/21 21:03:02]

This will be out of bounds if there is no suitable config.

[jonathan.backer, 2011/07/22 13:12:40]

Done.

+
+  // Create texture.
+  compositor_->MakeCurrent();
+  glGenTextures(1, &texture_id_);
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+}
+
+AcceleratedSurfaceContainerTouchGLX::~AcceleratedSurfaceContainerTouchGLX() {
+  Display* dpy = gfx::GLSurfaceGLX::GetDisplay();
+  glXDestroyGLXPixmap(dpy, glx_pixmap_);
+  XFreePixmap(dpy, pixmap_);
+}
+
+void AcceleratedSurfaceContainerTouchGLX::Draw(
+    const ui::Transform& transform) {
+  DCHECK(compositor_->program_no_swizzle());
+  Display* dpy = gfx::GLSurfaceGLX::GetDisplay();
+
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  glXBindTexImageEXT(dpy, glx_pixmap_, GLX_FRONT_LEFT_EXT, NULL);
+  DrawInternal(*compositor_->program_no_swizzle(), transform);
+  glXReleaseTexImageEXT(dpy, glx_pixmap_, GLX_FRONT_LEFT_EXT);
+}
+
+}  // namespace
+
+AcceleratedSurfaceContainerTouch::AcceleratedSurfaceContainerTouch(
+    ui::CompositorGL* compositor,
+    const gfx::Size& size) :
+        TextureGL(compositor, size) {
+}
+
+// static
+AcceleratedSurfaceContainerTouch*
+AcceleratedSurfaceContainerTouch::CreateAcceleratedSurfaceContainer(
+    ui::CompositorGL* compositor,
+    const gfx::Size& size,
+    uint64 surface_handle) {
+  switch (gfx::GetGLImplementation()) {
+    case gfx::kGLImplementationDesktopGL:
+      return new AcceleratedSurfaceContainerTouchGLX(compositor,
+                                                     size,
+                                                     surface_handle);
+    case gfx::kGLImplementationEGLGLES2:
+      return new AcceleratedSurfaceContainerTouchEGL(compositor,
+                                                     size,
+                                                     surface_handle);
+    default:
+      NOTREACHED();
+      return NULL;
+  }
+}
+
+void AcceleratedSurfaceContainerTouch::SetBitmap(
+    const SkBitmap& bitmap,
+    const gfx::Point& origin,
+    const gfx::Size& overall_size) {
+  NOTIMPLEMENTED();
+}