view Xcode/TemplatesForProjectBuilder/SDL Cocoa Application/main.c @ 2359:b70b96e615d2 gsoc2008_iphone

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 4d2d0548f5b2
children
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/* Simple program:  Create a blank window, wait for keypress, quit.

   Please see the SDL documentation for details on using the SDL API:
   /Developer/Documentation/SDL/docs.html
*/
   
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#include "SDL.h"

int main(int argc, char *argv[])
{
	Uint32 initflags = SDL_INIT_VIDEO;  /* See documentation for details */
	SDL_Surface *screen;
	Uint8  video_bpp = 0;
	Uint32 videoflags = SDL_SWSURFACE;
	int    done;
        SDL_Event event;

	/* Initialize the SDL library */
	if ( SDL_Init(initflags) < 0 ) {
		fprintf(stderr, "Couldn't initialize SDL: %s\n",
			SDL_GetError());
		exit(1);
	}

	/* Set 640x480 video mode */
	screen=SDL_SetVideoMode(640,480, video_bpp, videoflags);
        if (screen == NULL) {
		fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
                        video_bpp, SDL_GetError());
		SDL_Quit();
		exit(2);
	}

	done = 0;
	while ( !done ) {

		/* Check for events */
		while ( SDL_PollEvent(&event) ) {
			switch (event.type) {

				case SDL_MOUSEMOTION:
					break;
				case SDL_MOUSEBUTTONDOWN:
					break;
				case SDL_KEYDOWN:
					/* Any keypress quits the app... */
				case SDL_QUIT:
					done = 1;
					break;
				default:
					break;
			}
		}
	}
	
	/* Clean up the SDL library */
	SDL_Quit();
	return(0);
}