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/*
* Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
*
* Based on egltri by
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
* Copyright (C) 2008 Brian Paul All Rights Reserved.
* Copyright (C) 2008 Jakob Bornecrantz All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <GLES/gl.h>
#include "winsys.h"
static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
static void tri_init()
{
glClearColor(0.4, 0.4, 0.4, 0.0);
}
static void tri_reshape(int width, int height)
{
GLfloat ar = (GLfloat) width / (GLfloat) height;
glViewport(0, 0, (GLint) width, (GLint) height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0, 0.0, -10.0);
}
static void tri_draw(void *data)
{
static const GLfloat verts[3][2] = {
{ -1, -1 },
{ 1, -1 },
{ 0, 1 }
};
static const GLfloat colors[3][4] = {
{ 1, 0, 0, 1 },
{ 0, 1, 0, 1 },
{ 0, 0, 1, 1 }
};
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(view_rotx, 1, 0, 0);
glRotatef(view_roty, 0, 1, 0);
glRotatef(view_rotz, 0, 0, 1);
{
glVertexPointer(2, GL_FLOAT, 0, verts);
glColorPointer(4, GL_FLOAT, 0, colors);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_TRIANGLES, 0, 3);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
}
glPopMatrix();
}
static void tri_run(void)
{
winsysRun(3.0, tri_draw, NULL);
}
int main(int argc, char *argv[])
{
EGLint width, height;
GLboolean printInfo = GL_FALSE;
int i;
/* parse cmd line args */
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-info") == 0) {
printInfo = GL_TRUE;
}
else {
printf("Warning: unknown parameter: %s\n", argv[i]);
}
}
if (!winsysInitScreen())
exit(1);
winsysQueryScreenSize(&width, &height);
if (printInfo) {
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
}
tri_init();
tri_reshape(width, height);
tri_run();
winsysFiniScreen();
return 0;
}
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