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//
// 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);
}
}
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