screenshotGL.cpp

Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2016 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#include "platform/platform.h"
25#include "gfx/gl/screenshotGL.h"
26#include "gfx/gl/gfxGLDevice.h"
27#include "gfx/bitmap/gBitmap.h"
28
29//Note if MSAA is ever enabled this will need fixing
30GBitmap* ScreenShotGL::_captureBackBuffer()
31{
32   glPixelStorei(GL_PACK_ALIGNMENT, 1);
33   glReadBuffer(GL_BACK);
34
35   Point2I size = GFX->getViewport().extent;
36   U8* pixels = new U8[size.x * size.y * 4];
37   glReadPixels(0, 0, size.x, size.y, GL_RGB, GL_UNSIGNED_BYTE, pixels);
38
39   GBitmap* bitmap = new GBitmap(size.x, size.y);
40
41   for (U32 y = 0; y < (U32)size.y; y++)
42      dMemcpy(bitmap->getAddress(0, y), pixels + y * size.x * 3, U32(size.x * 3));
43
44   delete[] pixels;
45
46   return bitmap;
47}
48
49