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Engine directory for ticket #1

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DavidWyand-GG 2012-09-19 11:15:01 -04:00
parent 352279af7a
commit 7dbfe6994d
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Engine/source/gfx/gl/gfxGLWindowTarget.cpp Normal file
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//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "windowManager/platformWindow.h"
#include "gfx/gl/gfxGLDevice.h"
#include "gfx/gl/gfxGLWindowTarget.h"
#include "gfx/gl/gfxGLTextureObject.h"
#include "gfx/gl/gfxGLUtils.h"
GFXGLWindowTarget::GFXGLWindowTarget(PlatformWindow *win, GFXDevice *d)
: GFXWindowTarget(win), mDevice(d), mContext(NULL), mFullscreenContext(NULL)
{
win->appEvent.notify(this, &GFXGLWindowTarget::_onAppSignal);
}
void GFXGLWindowTarget::resetMode()
{
if(mWindow->getVideoMode().fullScreen != mWindow->isFullscreen())
{
_teardownCurrentMode();
_setupNewMode();
}
}
void GFXGLWindowTarget::_onAppSignal(WindowId wnd, S32 event)
{
if(event != WindowHidden)
return;
// TODO: Investigate this further.
// Opening and then closing the console results in framerate dropping at an alarming rate down to 3-4 FPS and then
// rebounding to it's usual level. Clearing all the volatile VBs prevents this behavior, but I can't explain why.
// My fear is there is something fundamentally wrong with how we share objects between contexts and this is simply
// masking the issue for the most common case.
static_cast<GFXGLDevice*>(mDevice)->mVolatileVBs.clear();
}
void GFXGLWindowTarget::resolveTo(GFXTextureObject* obj)
{
AssertFatal(dynamic_cast<GFXGLTextureObject*>(obj), "GFXGLTextureTarget::resolveTo - Incorrect type of texture, expected a GFXGLTextureObject");
GFXGLTextureObject* glTexture = static_cast<GFXGLTextureObject*>(obj);
PRESERVE_FRAMEBUFFER();
GLuint dest;
glGenFramebuffersEXT(1, &dest);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, dest);
glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, glTexture->getHandle(), 0);
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
glBlitFramebufferEXT(0, 0, getSize().x, getSize().y,
0, 0, glTexture->getWidth(), glTexture->getHeight(), GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
glDeleteFramebuffersEXT(1, &dest);
}