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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file gameengine/GamePlayer/common/GPC_Canvas.cpp
* \ingroup player
*/
#ifndef NOPNG
#ifdef WIN32
#include "png.h"
#else
#include <png.h>
#endif
#endif // NOPNG
#include "RAS_IPolygonMaterial.h"
#include "GPC_Canvas.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#include "DNA_scene_types.h"
#include "DNA_space_types.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_image.h"
extern "C" {
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
}
GPC_Canvas::GPC_Canvas(
int width,
int height
) :
m_width(width),
m_height(height)
{
// initialize area so that it's available for game logic on frame 1 (ImageViewport)
m_displayarea.m_x1 = 0;
m_displayarea.m_y1 = 0;
m_displayarea.m_x2 = width;
m_displayarea.m_y2 = height;
glGetIntegerv(GL_VIEWPORT, (GLint*)m_viewport);
}
GPC_Canvas::~GPC_Canvas()
{
}
void GPC_Canvas::Resize(int width, int height)
{
m_width = width;
m_height = height;
// initialize area so that it's available for game logic on frame 1 (ImageViewport)
m_displayarea.m_x1 = 0;
m_displayarea.m_y1 = 0;
m_displayarea.m_x2 = width;
m_displayarea.m_y2 = height;
}
void GPC_Canvas::ClearColor(float r, float g, float b, float a)
{
::glClearColor(r,g,b,a);
}
void GPC_Canvas::SetViewPort(int x1, int y1, int x2, int y2)
{
/* x1 and y1 are the min pixel coordinate (e.g. 0)
x2 and y2 are the max pixel coordinate
the width,height is calculated including both pixels
therefore: max - min + 1
*/
/* XXX, nasty, this needs to go somewhere else,
* but where... definitely need to clean up this
* whole canvas/rendertools mess.
*/
glEnable(GL_SCISSOR_TEST);
m_viewport[0] = x1;
m_viewport[1] = y1;
m_viewport[2] = x2-x1 + 1;
m_viewport[3] = y2-y1 + 1;
glViewport(x1,y1,x2-x1 + 1,y2-y1 + 1);
glScissor(x1,y1,x2-x1 + 1,y2-y1 + 1);
}
void GPC_Canvas::UpdateViewPort(int x1, int y1, int x2, int y2)
{
m_viewport[0] = x1;
m_viewport[1] = y1;
m_viewport[2] = x2;
m_viewport[3] = y2;
}
const int *GPC_Canvas::GetViewPort()
{
#ifdef DEBUG
// If we're in a debug build, we might as well make sure our values don't differ
// from what the gpu thinks we have. This could lead to nasty, hard to find bugs.
int viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
assert(viewport[0] == m_viewport[0]);
assert(viewport[1] == m_viewport[1]);
assert(viewport[2] == m_viewport[2]);
assert(viewport[3] == m_viewport[3]);
#endif
return m_viewport;
}
void GPC_Canvas::ClearBuffer(
int type
) {
int ogltype = 0;
if (type & RAS_ICanvas::COLOR_BUFFER )
ogltype |= GL_COLOR_BUFFER_BIT;
if (type & RAS_ICanvas::DEPTH_BUFFER )
ogltype |= GL_DEPTH_BUFFER_BIT;
::glClear(ogltype);
}
void
GPC_Canvas::
MakeScreenShot(
const char* filename
) {
// copy image data
unsigned char *pixels = new unsigned char[GetWidth() * GetHeight() * 4];
if (!pixels) {
std::cout << "Cannot allocate pixels array" << std::endl;
return;
}
glReadPixels(0, 0, GetWidth(), GetHeight(), GL_RGBA, GL_UNSIGNED_BYTE, pixels);
// initialize image file format data
ImageFormatData im_format;
BKE_imformat_defaults(&im_format);
// create file path
char path[FILE_MAX];
BLI_strncpy(path, filename, sizeof(path));
BLI_path_abs(path, G.main->name);
BKE_add_image_extension_from_type(path, im_format.imtype);
// create and save imbuf
ImBuf *ibuf = IMB_allocImBuf(GetWidth(), GetHeight(), 24, 0);
ibuf->rect = (unsigned int*)pixels;
BKE_imbuf_write_as(ibuf, path, &im_format, false);
ibuf->rect = NULL;
IMB_freeImBuf(ibuf);
// clean up
delete [] (pixels);
}
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