1 files changed, 143 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/gl/glx/PbufferSurfaceGLX.cpp b/gfx/angle/src/libANGLE/renderer/gl/glx/PbufferSurfaceGLX.cpp
new file mode 100755
index 000000000..a97021b40
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/gl/glx/PbufferSurfaceGLX.cpp
@@ -0,0 +1,143 @@
+//
+// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// PbufferSurfaceGLX.cpp: GLX implementation of egl::Surface for PBuffers
+
+#include "libANGLE/renderer/gl/glx/PbufferSurfaceGLX.h"
+
+#include "common/debug.h"
+#include "libANGLE/renderer/gl/glx/DisplayGLX.h"
+#include "libANGLE/renderer/gl/glx/FunctionsGLX.h"
+
+namespace rx
+{
+
+PbufferSurfaceGLX::PbufferSurfaceGLX(const egl::SurfaceState &state,
+                                     RendererGL *renderer,
+                                     EGLint width,
+                                     EGLint height,
+                                     bool largest,
+                                     const FunctionsGLX &glx,
+                                     glx::Context context,
+                                     glx::FBConfig fbConfig)
+    : SurfaceGLX(state, renderer),
+      mWidth(width),
+      mHeight(height),
+      mLargest(largest),
+      mGLX(glx),
+      mContext(context),
+      mFBConfig(fbConfig),
+      mPbuffer(0)
+{
+}
+
+PbufferSurfaceGLX::~PbufferSurfaceGLX()
+{
+    if (mPbuffer)
+    {
+        mGLX.destroyPbuffer(mPbuffer);
+    }
+}
+
+egl::Error PbufferSurfaceGLX::initialize()
+{
+    // Avoid creating 0-sized PBuffers as it fails on the Intel Mesa driver
+    // as commented on https://bugs.freedesktop.org/show_bug.cgi?id=38869 so we
+    // use (w, 1) or (1, h) instead.
+    int width = std::max(1, static_cast<int>(mWidth));
+    int height = std::max(1, static_cast<int>(mHeight));
+
+    const int attribs[] =
+    {
+        GLX_PBUFFER_WIDTH, width,
+        GLX_PBUFFER_HEIGHT, height,
+        GLX_LARGEST_PBUFFER, mLargest,
+        None
+    };
+
+    mPbuffer = mGLX.createPbuffer(mFBConfig, attribs);
+    if (!mPbuffer)
+    {
+        return egl::Error(EGL_BAD_ALLOC, "Failed to create a native GLX pbuffer.");
+    }
+
+    if (mLargest)
+    {
+        mGLX.queryDrawable(mPbuffer, GLX_WIDTH, &mWidth);
+        mGLX.queryDrawable(mPbuffer, GLX_HEIGHT, &mHeight);
+    }
+
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::makeCurrent()
+{
+    if (mGLX.makeCurrent(mPbuffer, mContext) != True)
+    {
+        return egl::Error(EGL_BAD_DISPLAY);
+    }
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::swap()
+{
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
+{
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::querySurfacePointerANGLE(EGLint attribute, void **value)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::bindTexImage(gl::Texture *texture, EGLint buffer)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error PbufferSurfaceGLX::releaseTexImage(EGLint buffer)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+void PbufferSurfaceGLX::setSwapInterval(EGLint interval)
+{
+}
+
+EGLint PbufferSurfaceGLX::getWidth() const
+{
+    return mWidth;
+}
+
+EGLint PbufferSurfaceGLX::getHeight() const
+{
+    return mHeight;
+}
+
+EGLint PbufferSurfaceGLX::isPostSubBufferSupported() const
+{
+    UNIMPLEMENTED();
+    return EGL_FALSE;
+}
+
+EGLint PbufferSurfaceGLX::getSwapBehavior() const
+{
+    return EGL_BUFFER_PRESERVED;
+}
+
+egl::Error PbufferSurfaceGLX::checkForResize()
+{
+    // The size of pbuffers never change
+    return egl::Error(EGL_SUCCESS);
+}
+}