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/*
THIS WORK, INCLUDING THE SOURCE CODE, DOCUMENTATION
AND RELATED MEDIA AND DATA, IS PLACED INTO THE PUBLIC DOMAIN.
THE ORIGINAL AUTHOR IS KYLE FOLEY.
THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY
OF ANY KIND, NOT EVEN THE IMPLIED WARRANTY OF
MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE,
ASSUMES _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE
RESULTING FROM THE USE, MODIFICATION, OR
REDISTRIBUTION OF THIS SOFTWARE.
*/
#ifndef __EMSCRIPTEN__
#define USE_GLEW 1
#endif
#if USE_GLEW
#include "GL/glew.h"
#endif
#include "SDL/SDL.h"
#if !USE_GLEW
#include "SDL/SDL_opengl.h"
#endif
#include <stdio.h>
#include <string.h>
#include <assert.h>
int main(int argc, char *argv[])
{
SDL_Surface *screen;
if ( SDL_Init(SDL_INIT_VIDEO) != 0 ) {
printf("Unable to initialize SDL: %s\n", SDL_GetError());
return 1;
}
SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
screen = SDL_SetVideoMode( 640, 480, 24, SDL_OPENGL );
if ( !screen ) {
printf("Unable to set video mode: %s\n", SDL_GetError());
return 1;
}
GLint value = 0;
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &value);
assert(value == GL_BLEND);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &value);
assert(value == GL_MODULATE);
GLfloat colora[4] = { 0.2f, 0.3f, 0.4f, 0.5f };
GLfloat colorb[4] = {};
glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, colora);
glGetTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, colorb);
printf("%f %f %f %f\n", colorb[0], colorb[1], colorb[2], colorb[3]);
assert(colora[0] == colorb[0]);
assert(colora[1] == colorb[1]);
assert(colora[2] == colorb[2]);
assert(colora[3] == colorb[3]);
SDL_Quit();
#ifdef REPORT_RESULT
int result = 1;
REPORT_RESULT();
#endif
return 0;
}
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