130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*
|
|
* 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;
|
|
}
|