Mercurial > sdl-ios-xcode

annotate include/SDL_scalemode.h @ 5053:b5b42be9333c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed bug #1026 Vittorio Giovara 2010-07-16 19:09:28 PDT i was reading SDL_renderer_gles and i noticed that every time we there is some gl call the gl state is modified with a couple of glEnableClientState()/glDisableClientState. While this is completely fine for desktops systems, this is a major performace kill on mobile devices, right where opengles is implemented. Normal practice in this case is to update the glstate once, keep it always the same and disable/enable other states only in very special occasions. On the web there's plenty of documentation (on the top of my head http://developer.apple.com/iphone/library/documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/Performance/Performance.html#//apple_ref/doc/uid/TP40008793-CH105-SW5 ) and i personally tried this. I modified my code and got a 10 fps boost, then modified SDL_render_gles and shifted from 40 fps to 50 fps alone -- considering that i started from ~30fps i got an 80% performance increase with this technique. I have attached a dif of my changes, hope that it will be included in mainstream.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 19 Jan 2011 23:56:16 -0800
parents aa8888658021
children
rev   line source
4929
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /*
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
3 Copyright (C) 1997-2010 Sam Lantinga
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
4
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
6 modify it under the terms of the GNU Lesser General Public
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
13 Lesser General Public License for more details.
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
15 You should have received a copy of the GNU Lesser General Public
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
16 License along with this library; if not, write to the Free Software
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19 Sam Lantinga
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 slouken@libsdl.org
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21 */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
22
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23 /**
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
24 * \file SDL_scalemode.h
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25 *
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 * Header file declaring the SDL_ScaleMode enumeration
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27 */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29 #ifndef _SDL_scalemode_h
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
30 #define _SDL_scalemode_h
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32 #include "begin_code.h"
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 /* Set up for C function definitions, even when using C++ */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 #ifdef __cplusplus
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 /* *INDENT-OFF* */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 extern "C" {
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 /* *INDENT-ON* */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
38 #endif
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40 /**
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41 * \brief The texture scale mode used in SDL_RenderCopy().
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42 */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43 typedef enum
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44 {
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45 SDL_SCALEMODE_NONE = 0x00000000, /**< No scaling, rectangles must
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
46 match dimensions */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48 SDL_SCALEMODE_FAST = 0x00000001, /**< Point sampling or
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49 equivalent algorithm */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51 SDL_SCALEMODE_SLOW = 0x00000002, /**< Linear filtering or
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 equivalent algorithm */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54 SDL_SCALEMODE_BEST = 0x00000004 /**< Bicubic filtering or
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 equivalent algorithm */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56 } SDL_ScaleMode;
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 /* Ends C function definitions when using C++ */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 #ifdef __cplusplus
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
61 /* *INDENT-OFF* */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62 }
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63 /* *INDENT-ON* */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 #endif
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65 #include "close_code.h"
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 #endif /* _SDL_video_h */
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 /* vi: set ts=4 sw=4 expandtab: */