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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on Broken Sword 2.5 engine
*
* Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
*
* Licensed under GNU GPL v2
*
*/
#define BS_LOG_PREFIX "GRAPHICENGINE"
#include "sword25/gfx/image/image.h"
#include "sword25/gfx/screenshot.h"
#include "sword25/kernel/inputpersistenceblock.h"
#include "sword25/kernel/outputpersistenceblock.h"
#include "sword25/gfx/graphicengine.h"
namespace Lua {
extern "C"
{
#include "sword25/util/lua/lua.h"
#include "sword25/util/lua/lauxlib.h"
}
}
namespace Sword25 {
using namespace Lua;
static const unsigned int FRAMETIME_SAMPLE_COUNT = 5; // Anzahl der Framezeiten �ber die, die Framezeit gemittelt wird
GraphicEngine::GraphicEngine(Kernel *pKernel) :
m_Width(0),
m_Height(0),
m_BitDepth(0),
m_Windowed(0),
m_LastTimeStamp((uint64) - 1), // max. BS_INT64 um beim ersten Aufruf von _UpdateLastFrameDuration() einen Reset zu erzwingen
m_LastFrameDuration(0),
m_TimerActive(true),
m_FrameTimeSampleSlot(0),
m_RepaintedPixels(0),
ResourceService(pKernel) {
m_FrameTimeSamples.resize(FRAMETIME_SAMPLE_COUNT);
if (!RegisterScriptBindings())
BS_LOG_ERRORLN("Script bindings could not be registered.");
else
BS_LOGLN("Script bindings registered.");
}
// -----------------------------------------------------------------------------
void GraphicEngine::UpdateLastFrameDuration() {
// Aktuelle Zeit holen
uint64_t CurrentTime = Kernel::GetInstance()->GetMicroTicks();
// Verstrichene Zeit seit letztem Frame berechnen und zu gro�e Zeitspr�nge ( > 250 msek.) unterbinden
// (kann vorkommen bei geladenen Spielst�nden, w�hrend des Debuggings oder Hardwareungenauigkeiten)
m_FrameTimeSamples[m_FrameTimeSampleSlot] = static_cast<unsigned int>(CurrentTime - m_LastTimeStamp);
if (m_FrameTimeSamples[m_FrameTimeSampleSlot] > 250000) m_FrameTimeSamples[m_FrameTimeSampleSlot] = 250000;
m_FrameTimeSampleSlot = (m_FrameTimeSampleSlot + 1) % FRAMETIME_SAMPLE_COUNT;
// Die Framezeit wird �ber mehrere Frames gemittelt um Ausreisser zu eliminieren
Common::Array<unsigned int>::const_iterator it = m_FrameTimeSamples.begin();
unsigned int Sum = *it;
for (it++; it != m_FrameTimeSamples.end(); it++) Sum += *it;
m_LastFrameDuration = Sum / FRAMETIME_SAMPLE_COUNT;
// _LastTimeStamp auf die Zeit des aktuellen Frames setzen
m_LastTimeStamp = CurrentTime;
}
// -----------------------------------------------------------------------------
namespace {
bool DoSaveScreenshot(GraphicEngine &GraphicEngine, const Common::String &Filename, bool Thumbnail) {
unsigned int Width;
unsigned int Height;
byte *Data;
if (!GraphicEngine.GetScreenshot(Width, Height, &Data)) {
BS_LOG_ERRORLN("Call to GetScreenshot() failed. Cannot save screenshot.");
return false;
}
if (Thumbnail)
return Screenshot::SaveThumbnailToFile(Width, Height, Data, Filename);
else
return Screenshot::SaveToFile(Width, Height, Data, Filename);
}
}
// -----------------------------------------------------------------------------
bool GraphicEngine::SaveScreenshot(const Common::String &Filename) {
return DoSaveScreenshot(*this, Filename, false);
}
// -----------------------------------------------------------------------------
bool GraphicEngine::SaveThumbnailScreenshot(const Common::String &Filename) {
return DoSaveScreenshot(*this, Filename, true);
}
// -----------------------------------------------------------------------------
void GraphicEngine::ARGBColorToLuaColor(lua_State *L, unsigned int Color) {
lua_Number Components[4] = {
(Color >> 16) & 0xff, // Rot
(Color >> 8) & 0xff, // Gr�n
Color & 0xff, // Blau
Color >> 24, // Alpha
};
lua_newtable(L);
for (unsigned int i = 1; i <= 4; i++) {
lua_pushnumber(L, i);
lua_pushnumber(L, Components[i - 1]);
lua_settable(L, -3);
}
}
// -----------------------------------------------------------------------------
unsigned int GraphicEngine::LuaColorToARGBColor(lua_State *L, int StackIndex) {
#ifdef DEBUG
int __startStackDepth = lua_gettop(L);
#endif
// Sicherstellen, dass wir wirklich eine Tabelle betrachten
luaL_checktype(L, StackIndex, LUA_TTABLE);
// Gr��e der Tabelle auslesen
unsigned int n = luaL_getn(L, StackIndex);
// RGB oder RGBA Farben werden unterst�tzt und sonst keine
if (n != 3 && n != 4) luaL_argcheck(L, 0, StackIndex, "at least 3 of the 4 color components have to be specified");
// Rote Farbkomponente auslesen
lua_rawgeti(L, StackIndex, 1);
unsigned int Red = static_cast<unsigned int>(lua_tonumber(L, -1));
if (!lua_isnumber(L, -1) || Red >= 256) luaL_argcheck(L, 0, StackIndex, "red color component must be an integer between 0 and 255");
lua_pop(L, 1);
// Gr�ne Farbkomponente auslesen
lua_rawgeti(L, StackIndex, 2);
unsigned int Green = static_cast<unsigned int>(lua_tonumber(L, -1));
if (!lua_isnumber(L, -1) || Green >= 256) luaL_argcheck(L, 0, StackIndex, "green color component must be an integer between 0 and 255");
lua_pop(L, 1);
// Blaue Farbkomponente auslesen
lua_rawgeti(L, StackIndex, 3);
unsigned int Blue = static_cast<unsigned int>(lua_tonumber(L, -1));
if (!lua_isnumber(L, -1) || Blue >= 256) luaL_argcheck(L, 0, StackIndex, "blue color component must be an integer between 0 and 255");
lua_pop(L, 1);
// Alpha Farbkomponente auslesen
unsigned int Alpha = 0xff;
if (n == 4) {
lua_rawgeti(L, StackIndex, 4);
Alpha = static_cast<unsigned int>(lua_tonumber(L, -1));
if (!lua_isnumber(L, -1) || Alpha >= 256) luaL_argcheck(L, 0, StackIndex, "alpha color component must be an integer between 0 and 255");
lua_pop(L, 1);
}
#ifdef DEBUG
BS_ASSERT(__startStackDepth == lua_gettop(L));
#endif
return (Alpha << 24) | (Red << 16) | (Green << 8) | Blue;
}
// -----------------------------------------------------------------------------
bool GraphicEngine::Persist(OutputPersistenceBlock &Writer) {
Writer.Write(m_TimerActive);
return true;
}
// -----------------------------------------------------------------------------
bool GraphicEngine::Unpersist(InputPersistenceBlock &Reader) {
Reader.Read(m_TimerActive);
return Reader.IsGood();
}
} // End of namespace Sword25
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