Initial commit

engines/titanic/support/direct_draw.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "titanic/support/direct_draw.h"
+#include "titanic/debugger.h"
+#include "titanic/titanic.h"
+#include "common/debug.h"
+#include "engines/util.h"
+#include "graphics/pixelformat.h"
+#include "graphics/screen.h"
+
+namespace Titanic {
+
+DirectDraw::DirectDraw() : _windowed(false), _width(0), _height(0),
+		_bpp(0), _numBackSurfaces(0) {
+}
+
+void DirectDraw::setDisplayMode(int width, int height, int bpp, int refreshRate) {
+	debugC(DEBUG_BASIC, kDebugGraphics, "DirectDraw::SetDisplayMode (%d x %d), %d bpp",
+		width, height, bpp);
+	assert(bpp == 16);
+
+	Graphics::PixelFormat pixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0);
+	initGraphics(width, height, &pixelFormat);
+}
+
+void DirectDraw::diagnostics() {
+	debugC(DEBUG_BASIC, kDebugGraphics, "Running DirectDraw Diagnostic...");
+}
+
+DirectDrawSurface *DirectDraw::createSurfaceFromDesc(const DDSurfaceDesc &desc) {
+	DirectDrawSurface *surface = new DirectDrawSurface();
+	surface->create(desc._w, desc._h, desc._bpp);
+
+	return surface;
+}
+
+/*------------------------------------------------------------------------*/
+
+DirectDrawManager::DirectDrawManager(TitanicEngine *vm, bool windowed) {
+	_mainSurface = nullptr;
+	_backSurfaces[0] = _backSurfaces[1] = nullptr;
+	_directDraw._windowed = windowed;
+}
+
+void DirectDrawManager::initVideo(int width, int height, int bpp, int numBackSurfaces) {
+	debugC(DEBUG_BASIC, kDebugGraphics, "Initialising video surfaces");
+	assert(numBackSurfaces == 0);
+
+	_directDraw._width = width;
+	_directDraw._numBackSurfaces = numBackSurfaces;
+	_directDraw._height = height;
+	_directDraw._bpp = bpp;
+
+	if (_directDraw._windowed) {
+		initWindowed();
+	} else {
+		initFullScreen();
+	}
+}
+
+void DirectDrawManager::initFullScreen() {
+	debugC(DEBUG_BASIC, kDebugGraphics, "Creating surfaces");
+	_directDraw.setDisplayMode(_directDraw._width, _directDraw._height,
+		_directDraw._bpp, 0);
+
+	// Set up the main surface to point to the screen
+	_mainSurface = new DirectDrawSurface();
+	_mainSurface->create(g_vm->_screen);
+}
+
+DirectDrawSurface *DirectDrawManager::createSurface(int w, int h, int bpp, int surfaceNum) {
+	if (surfaceNum)
+		return nullptr;
+
+	assert(_mainSurface);
+	return _directDraw.createSurfaceFromDesc(DDSurfaceDesc(w, h, bpp));
+}
+
+} // End of namespace Titanic