1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* 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.
*
*/
/*
* This file is based on WME Lite.
* http://dead-code.org/redir.php?target=wmelite
* Copyright (c) 2011 Jan Nedoma
*/
#ifndef WINTERMUTE_BASE_RENDERER_SDL_H
#define WINTERMUTE_BASE_RENDERER_SDL_H
#include "engines/wintermute/base/gfx/base_renderer.h"
#include "common/rect.h"
#include "graphics/surface.h"
#include "common/list.h"
#include "graphics/transform_struct.h"
namespace Wintermute {
class BaseSurfaceOSystem;
class RenderTicket;
/**
* A 2D-renderer implementation for WME.
* This renderer makes use of a "ticket"-system, where all draw-calls
* are stored as tickets until flip() is called, and compared against the tickets
* from last frame, to determine which calls were the same as last round
* (i.e. in the exact same order, with the exact same arguments), and thus
* figure out which parts of the screen need to be redrawn.
*
* Important concepts to handle here, is the ordered number of any ticket
* which is called the "drawNum", every frame this starts from scratch, and
* then the incoming tickets created from the draw-calls are checked to see whether
* they came before, on, or after the drawNum they had last frame. Everything else
* being equal, this information is then used to check whether the draw order changed,
* which will then create a need for redrawing, as we draw with an alpha-channel here.
*
* There is also a draw path that draws without tickets, for debugging purposes,
* as well as to accomodate situations with large enough amounts of draw calls,
* that there will be too much overhead involved with comparing the generated tickets.
*/
class BaseRenderOSystem : public BaseRenderer {
public:
BaseRenderOSystem(BaseGame *inGame);
~BaseRenderOSystem();
typedef Common::List<RenderTicket *>::iterator RenderQueueIterator;
Common::String getName() const;
bool initRenderer(int width, int height, bool windowed) override;
bool flip() override;
virtual bool indicatorFlip();
bool fill(byte r, byte g, byte b, Common::Rect *rect = nullptr) override;
Graphics::PixelFormat getPixelFormat() const override;
void fade(uint16 alpha) override;
void fadeToColor(byte r, byte g, byte b, byte a) override;
bool drawLine(int x1, int y1, int x2, int y2, uint32 color) override;
BaseImage *takeScreenshot() override;
void invalidateTicket(RenderTicket *renderTicket);
void invalidateTicketsFromSurface(BaseSurfaceOSystem *surf);
/**
* Insert a new ticket into the queue, adding a dirty rect
* @param renderTicket the ticket to be added.
*/
void drawFromTicket(RenderTicket *renderTicket);
/**
* Re-insert an existing ticket into the queue, adding a dirty rect
* out-of-order from last draw from the ticket.
* @param ticket iterator pointing to the ticket to be added.
*/
void drawFromQueuedTicket(const RenderQueueIterator &ticket);
bool setViewport(int left, int top, int right, int bottom) override;
bool setViewport(Rect32 *rect) override { return BaseRenderer::setViewport(rect); }
Rect32 getViewPort() override;
void modTargetRect(Common::Rect *rect);
void pointFromScreen(Point32 *point);
void pointToScreen(Point32 *point);
void dumpData(const char *filename) override;
float getScaleRatioX() const override {
return _ratioX;
}
float getScaleRatioY() const override {
return _ratioY;
}
virtual bool startSpriteBatch() override;
virtual bool endSpriteBatch() override;
void endSaveLoad();
void drawSurface(BaseSurfaceOSystem *owner, const Graphics::Surface *surf, Common::Rect *srcRect, Common::Rect *dstRect, Graphics::TransformStruct &transform);
BaseSurface *createSurface() override;
private:
/**
* Mark a specified rect of the screen as dirty.
* @param rect the region to be marked as dirty
*/
void addDirtyRect(const Common::Rect &rect);
/**
* Traverse the tickets that are dirty, and draw them
*/
void drawTickets();
// Non-dirty-rects:
void drawFromSurface(RenderTicket *ticket);
// Dirty-rects:
void drawFromSurface(RenderTicket *ticket, Common::Rect *dstRect, Common::Rect *clipRect);
Common::Rect *_dirtyRect;
Common::List<RenderTicket *> _renderQueue;
bool _needsFlip;
RenderQueueIterator _lastFrameIter;
Common::Rect _renderRect;
Graphics::Surface *_renderSurface;
Graphics::Surface *_blankSurface;
int _borderLeft;
int _borderTop;
int _borderRight;
int _borderBottom;
bool _disableDirtyRects;
float _ratioX;
float _ratioY;
uint32 _clearColor;
bool _skipThisFrame;
int _lastScreenChangeID; // previous value of OSystem::getScreenChangeID()
};
} // End of namespace Wintermute
#endif
|
