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annotate src/video/glesrenderer/SDL_renderer_gles.h @ 2359:b70b96e615d2 gsoc2008_iphone

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These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver. There are a few differences between OpenGL and OpenGL ES that present difficulties for this driver: - OpenGL ES does NOT support many pixel formats (for example, no GL_BGR). Also, when using texture functions format and internalFormat must be the same -- this means 32 bit packed formats like SDL_PIXELFORMAT_BGR888 cannot be automatically converted to GL_RGB (which is 24bpp). - OpenGL ES doesn't have GL_PACK_ROW_LENGTH, which means data must be reformatted before uploading changes to dirty rects. This change has been added. - OpenGL ES doesn't support paletted textures, though there is an extension. I'm looking into this. Some other notable differences: - OpenGL ES has an extension called GL_OES_draw_texture which allows for quicker 2D sprite-type drawing. I use this in GL_RenderCopy when it is available. The iPhone supports the extension, but the iPhone Simulator does not (presently). - No glBegin() / glEnd() and no GL_QUADS! I'm using glDrawArrays with GL_TRIANGLE_STRIP instead!
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Thu, 17 Jul 2008 23:31:42 +0000
parents
children
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2359
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
1 /*
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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2 SDL - Simple DirectMedia Layer
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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3 Copyright (C) 1997-2006 Sam Lantinga
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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4
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
6 modify it under the terms of the GNU Lesser General Public
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
9
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
13 Lesser General Public License for more details.
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
14
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
15 You should have received a copy of the GNU Lesser General Public
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
16 License along with this library; if not, write to the Free Software
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
18
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
19 Sam Lantinga
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
20 slouken@libsdl.org
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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21 */
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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22 #include "SDL_config.h"
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
23
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
24 /* OpenGL renderer implementation */
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
25
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
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26 extern SDL_RenderDriver GL_ES_RenderDriver;
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
27
b70b96e615d2 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver.
Holmes Futrell <hfutrell@umail.ucsb.edu>
parents:
diff changeset
28 /* vi: set ts=4 sw=4 expandtab: */