648 lines
13 KiB
C
648 lines
13 KiB
C
/*
|
|
* Exercise EGL API functions
|
|
*/
|
|
|
|
#define EGL_EGLEXT_PROTOTYPES
|
|
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
#include <GL/gl.h>
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#define PIXEL_CENTER(x) ((long)(x) + 0.5)
|
|
|
|
#define GAP 10
|
|
#define ROWS 3
|
|
#define COLS 4
|
|
|
|
#define OPENGL_WIDTH 48
|
|
#define OPENGL_HEIGHT 13
|
|
|
|
|
|
GLenum rgb, doubleBuffer, windType;
|
|
GLint windW, windH;
|
|
|
|
GLenum mode1, mode2;
|
|
GLint boxW, boxH;
|
|
GLubyte OpenGL_bits[] = {
|
|
0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
|
|
0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01,
|
|
0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01,
|
|
0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
|
|
0x3e, 0x8f, 0xb7, 0xf9, 0xfc, 0x01,
|
|
0x63, 0xdb, 0xb0, 0x8d, 0x0d, 0x00,
|
|
0x63, 0xdb, 0xb7, 0x8d, 0x0d, 0x00,
|
|
0x63, 0xdb, 0xb6, 0x8d, 0x0d, 0x00,
|
|
0x63, 0x8f, 0xf3, 0xcc, 0x0d, 0x00,
|
|
0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0a,
|
|
0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0e,
|
|
0x63, 0x00, 0x00, 0x8c, 0xed, 0x0e,
|
|
0x3e, 0x00, 0x00, 0xf8, 0x0c, 0x00,
|
|
};
|
|
|
|
|
|
static void Init(void)
|
|
{
|
|
|
|
mode1 = GL_TRUE;
|
|
mode2 = GL_TRUE;
|
|
}
|
|
|
|
static void Reshape(int width, int height)
|
|
{
|
|
|
|
windW = (GLint)width;
|
|
windH = (GLint)height;
|
|
}
|
|
|
|
#if 0
|
|
static void RotateColorMask(void)
|
|
{
|
|
static GLint rotation = 0;
|
|
|
|
rotation = (rotation + 1) & 0x3;
|
|
switch (rotation) {
|
|
case 0:
|
|
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
|
glIndexMask( 0xff );
|
|
break;
|
|
case 1:
|
|
glColorMask(GL_FALSE, GL_TRUE, GL_TRUE, GL_TRUE);
|
|
glIndexMask(0xFE);
|
|
break;
|
|
case 2:
|
|
glColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_TRUE);
|
|
glIndexMask(0xFD);
|
|
break;
|
|
case 3:
|
|
glColorMask(GL_TRUE, GL_TRUE, GL_FALSE, GL_TRUE);
|
|
glIndexMask(0xFB);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void Viewport(GLint row, GLint column)
|
|
{
|
|
GLint x, y;
|
|
|
|
boxW = (windW - (COLS + 1) * GAP) / COLS;
|
|
boxH = (windH - (ROWS + 1) * GAP) / ROWS;
|
|
|
|
x = GAP + column * (boxW + GAP);
|
|
y = GAP + row * (boxH + GAP);
|
|
|
|
glViewport(x, y, boxW, boxH);
|
|
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glOrtho(-boxW/2, boxW/2, -boxH/2, boxH/2, 0.0, 1.0);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
|
|
glEnable(GL_SCISSOR_TEST);
|
|
glScissor(x, y, boxW, boxH);
|
|
}
|
|
|
|
enum {
|
|
COLOR_BLACK = 0,
|
|
COLOR_RED,
|
|
COLOR_GREEN,
|
|
COLOR_YELLOW,
|
|
COLOR_BLUE,
|
|
COLOR_MAGENTA,
|
|
COLOR_CYAN,
|
|
COLOR_WHITE
|
|
};
|
|
|
|
static float RGBMap[9][3] = {
|
|
{0, 0, 0},
|
|
{1, 0, 0},
|
|
{0, 1, 0},
|
|
{1, 1, 0},
|
|
{0, 0, 1},
|
|
{1, 0, 1},
|
|
{0, 1, 1},
|
|
{1, 1, 1},
|
|
{0.5, 0.5, 0.5}
|
|
};
|
|
|
|
static void SetColor(int c)
|
|
{
|
|
glColor3fv(RGBMap[c]);
|
|
}
|
|
|
|
static void Point(void)
|
|
{
|
|
GLint i;
|
|
|
|
glBegin(GL_POINTS);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(0, 0);
|
|
for (i = 1; i < 8; i++) {
|
|
GLint j = i * 2;
|
|
SetColor(COLOR_BLACK+i);
|
|
glVertex2i(-j, -j);
|
|
glVertex2i(-j, 0);
|
|
glVertex2i(-j, j);
|
|
glVertex2i(0, j);
|
|
glVertex2i(j, j);
|
|
glVertex2i(j, 0);
|
|
glVertex2i(j, -j);
|
|
glVertex2i(0, -j);
|
|
}
|
|
glEnd();
|
|
}
|
|
|
|
static void Lines(void)
|
|
{
|
|
GLint i;
|
|
|
|
glPushMatrix();
|
|
|
|
glTranslatef(-12, 0, 0);
|
|
for (i = 1; i < 8; i++) {
|
|
SetColor(COLOR_BLACK+i);
|
|
glBegin(GL_LINES);
|
|
glVertex2i(-boxW/4, -boxH/4);
|
|
glVertex2i(boxW/4, boxH/4);
|
|
glEnd();
|
|
glTranslatef(4, 0, 0);
|
|
}
|
|
|
|
glPopMatrix();
|
|
|
|
glBegin(GL_LINES);
|
|
glVertex2i(0, 0);
|
|
glEnd();
|
|
}
|
|
|
|
static void LineStrip(void)
|
|
{
|
|
|
|
glBegin(GL_LINE_STRIP);
|
|
SetColor(COLOR_RED);
|
|
glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
|
|
glEnd();
|
|
|
|
glBegin(GL_LINE_STRIP);
|
|
glVertex2i(0, 0);
|
|
glEnd();
|
|
}
|
|
|
|
static void LineLoop(void)
|
|
{
|
|
|
|
glBegin(GL_LINE_LOOP);
|
|
SetColor(COLOR_RED);
|
|
glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
|
|
glEnd();
|
|
|
|
glEnable(GL_LOGIC_OP);
|
|
glLogicOp(GL_XOR);
|
|
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_ONE, GL_ONE);
|
|
|
|
SetColor(COLOR_MAGENTA);
|
|
glBegin(GL_LINE_LOOP);
|
|
glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(-boxH/8));
|
|
glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8));
|
|
glEnd();
|
|
glBegin(GL_LINE_LOOP);
|
|
glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8+5));
|
|
glVertex2f(PIXEL_CENTER(boxW/8), PIXEL_CENTER(boxH/8+5));
|
|
glEnd();
|
|
glDisable(GL_LOGIC_OP);
|
|
glDisable(GL_BLEND);
|
|
|
|
SetColor(COLOR_GREEN);
|
|
glBegin(GL_POINTS);
|
|
glVertex2i(0, 0);
|
|
glEnd();
|
|
|
|
glBegin(GL_LINE_LOOP);
|
|
glVertex2i(0, 0);
|
|
glEnd();
|
|
}
|
|
|
|
static void Bitmap(void)
|
|
{
|
|
|
|
glBegin(GL_LINES);
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/2, 0);
|
|
glVertex2i(boxW/2, 0);
|
|
glVertex2i(0, -boxH/2);
|
|
glVertex2i(0, boxH/2);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(0, -3);
|
|
glVertex2i(0, -3+OPENGL_HEIGHT);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(0, -3);
|
|
glVertex2i(OPENGL_WIDTH, -3);
|
|
glEnd();
|
|
|
|
SetColor(COLOR_GREEN);
|
|
|
|
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE);
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
glRasterPos2i(0, 0);
|
|
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, 0, 3, 0.0, 0.0, OpenGL_bits);
|
|
}
|
|
|
|
static void Triangles(void)
|
|
{
|
|
|
|
glBegin(GL_TRIANGLES);
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, -boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/8, -boxH/16);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(boxW/8, -boxH/16);
|
|
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/8, boxH/16);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(boxW/8, boxH/16);
|
|
glEnd();
|
|
|
|
glBegin(GL_TRIANGLES);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(-100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void TriangleStrip(void)
|
|
{
|
|
|
|
glBegin(GL_TRIANGLE_STRIP);
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, -boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/4, boxH/4);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(0, -boxH/4);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(0, boxH/4);
|
|
SetColor(COLOR_CYAN);
|
|
glVertex2i(boxW/4, -boxH/4);
|
|
SetColor(COLOR_YELLOW);
|
|
glVertex2i(boxW/4, boxH/4);
|
|
glEnd();
|
|
|
|
glBegin(GL_TRIANGLE_STRIP);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(-100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void TriangleFan(void)
|
|
{
|
|
GLint vx[8][2];
|
|
GLint x0, y0, x1, y1, x2, y2, x3, y3;
|
|
GLint i;
|
|
|
|
y0 = -boxH/4;
|
|
y1 = y0 + boxH/2/3;
|
|
y2 = y1 + boxH/2/3;
|
|
y3 = boxH/4;
|
|
x0 = -boxW/4;
|
|
x1 = x0 + boxW/2/3;
|
|
x2 = x1 + boxW/2/3;
|
|
x3 = boxW/4;
|
|
|
|
vx[0][0] = x0; vx[0][1] = y1;
|
|
vx[1][0] = x0; vx[1][1] = y2;
|
|
vx[2][0] = x1; vx[2][1] = y3;
|
|
vx[3][0] = x2; vx[3][1] = y3;
|
|
vx[4][0] = x3; vx[4][1] = y2;
|
|
vx[5][0] = x3; vx[5][1] = y1;
|
|
vx[6][0] = x2; vx[6][1] = y0;
|
|
vx[7][0] = x1; vx[7][1] = y0;
|
|
|
|
glBegin(GL_TRIANGLE_FAN);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(0, 0);
|
|
for (i = 0; i < 8; i++) {
|
|
SetColor(COLOR_WHITE-i);
|
|
glVertex2iv(vx[i]);
|
|
}
|
|
glEnd();
|
|
|
|
glBegin(GL_TRIANGLE_FAN);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(-100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void Rect(void)
|
|
{
|
|
|
|
SetColor(COLOR_GREEN);
|
|
glRecti(-boxW/4, -boxH/4, boxW/4, boxH/4);
|
|
}
|
|
|
|
static void PolygonFunc(void)
|
|
{
|
|
GLint vx[8][2];
|
|
GLint x0, y0, x1, y1, x2, y2, x3, y3;
|
|
GLint i;
|
|
|
|
y0 = -boxH/4;
|
|
y1 = y0 + boxH/2/3;
|
|
y2 = y1 + boxH/2/3;
|
|
y3 = boxH/4;
|
|
x0 = -boxW/4;
|
|
x1 = x0 + boxW/2/3;
|
|
x2 = x1 + boxW/2/3;
|
|
x3 = boxW/4;
|
|
|
|
vx[0][0] = x0; vx[0][1] = y1;
|
|
vx[1][0] = x0; vx[1][1] = y2;
|
|
vx[2][0] = x1; vx[2][1] = y3;
|
|
vx[3][0] = x2; vx[3][1] = y3;
|
|
vx[4][0] = x3; vx[4][1] = y2;
|
|
vx[5][0] = x3; vx[5][1] = y1;
|
|
vx[6][0] = x2; vx[6][1] = y0;
|
|
vx[7][0] = x1; vx[7][1] = y0;
|
|
|
|
glBegin(GL_POLYGON);
|
|
for (i = 0; i < 8; i++) {
|
|
SetColor(COLOR_WHITE-i);
|
|
glVertex2iv(vx[i]);
|
|
}
|
|
glEnd();
|
|
|
|
glBegin(GL_POLYGON);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void Quads(void)
|
|
{
|
|
|
|
glBegin(GL_QUADS);
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, -boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/8, -boxH/16);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(boxW/8, -boxH/16);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(boxW/4, -boxH/4);
|
|
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/8, boxH/16);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(boxW/8, boxH/16);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(boxW/4, boxH/4);
|
|
glEnd();
|
|
|
|
glBegin(GL_QUADS);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(100, 100);
|
|
glVertex2i(-100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void QuadStrip(void)
|
|
{
|
|
|
|
glBegin(GL_QUAD_STRIP);
|
|
SetColor(COLOR_GREEN);
|
|
glVertex2i(-boxW/4, -boxH/4);
|
|
SetColor(COLOR_RED);
|
|
glVertex2i(-boxW/4, boxH/4);
|
|
SetColor(COLOR_BLUE);
|
|
glVertex2i(0, -boxH/4);
|
|
SetColor(COLOR_WHITE);
|
|
glVertex2i(0, boxH/4);
|
|
SetColor(COLOR_CYAN);
|
|
glVertex2i(boxW/4, -boxH/4);
|
|
SetColor(COLOR_YELLOW);
|
|
glVertex2i(boxW/4, boxH/4);
|
|
glEnd();
|
|
|
|
glBegin(GL_QUAD_STRIP);
|
|
glVertex2i(0, 0);
|
|
glVertex2i(100, 100);
|
|
glVertex2i(-100, 100);
|
|
glEnd();
|
|
}
|
|
|
|
static void Draw(EGLDisplay dpy, EGLSurface surf)
|
|
{
|
|
|
|
glViewport(0, 0, windW, windH);
|
|
glDisable(GL_SCISSOR_TEST);
|
|
|
|
glPushAttrib(GL_COLOR_BUFFER_BIT);
|
|
|
|
glColorMask(1, 1, 1, 1);
|
|
glIndexMask(~0);
|
|
|
|
glClearColor(0.0, 0.0, 0.0, 0.0);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
glPopAttrib();
|
|
|
|
if (mode1) {
|
|
glShadeModel(GL_SMOOTH);
|
|
} else {
|
|
glShadeModel(GL_FLAT);
|
|
}
|
|
|
|
if (mode2) {
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
|
} else {
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
|
|
}
|
|
|
|
Viewport(0, 0); Point();
|
|
Viewport(0, 1); Lines();
|
|
Viewport(0, 2); LineStrip();
|
|
Viewport(0, 3); LineLoop();
|
|
|
|
Viewport(1, 0); Bitmap();
|
|
|
|
Viewport(1, 1); TriangleFan();
|
|
Viewport(1, 2); Triangles();
|
|
Viewport(1, 3); TriangleStrip();
|
|
|
|
Viewport(2, 0); Rect();
|
|
Viewport(2, 1); PolygonFunc();
|
|
Viewport(2, 2); Quads();
|
|
Viewport(2, 3); QuadStrip();
|
|
|
|
glFlush();
|
|
|
|
if (doubleBuffer) {
|
|
eglSwapBuffers(dpy, surf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
|
|
{
|
|
const int binary = 0;
|
|
FILE *f = fopen( filename, "w" );
|
|
if (f) {
|
|
int i, x, y;
|
|
const GLubyte *ptr = buffer;
|
|
if (binary) {
|
|
fprintf(f,"P6\n");
|
|
fprintf(f,"# ppm-file created by osdemo.c\n");
|
|
fprintf(f,"%i %i\n", width,height);
|
|
fprintf(f,"255\n");
|
|
fclose(f);
|
|
f = fopen( filename, "ab" ); /* reopen in binary append mode */
|
|
for (y=height-1; y>=0; y--) {
|
|
for (x=0; x<width; x++) {
|
|
i = (y*width + x) * 4;
|
|
fputc(ptr[i], f); /* write red */
|
|
fputc(ptr[i+1], f); /* write green */
|
|
fputc(ptr[i+2], f); /* write blue */
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
/*ASCII*/
|
|
int counter = 0;
|
|
fprintf(f,"P3\n");
|
|
fprintf(f,"# ascii ppm file created by osdemo.c\n");
|
|
fprintf(f,"%i %i\n", width, height);
|
|
fprintf(f,"255\n");
|
|
for (y=height-1; y>=0; y--) {
|
|
for (x=0; x<width; x++) {
|
|
i = (y*width + x) * 4;
|
|
fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
|
|
counter++;
|
|
if (counter % 5 == 0)
|
|
fprintf(f, "\n");
|
|
}
|
|
}
|
|
}
|
|
fclose(f);
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int maj, min;
|
|
EGLContext ctx;
|
|
EGLSurface screen_surf;
|
|
EGLConfig configs[10];
|
|
EGLScreenMESA screen;
|
|
EGLModeMESA mode;
|
|
EGLint numConfigs, count;
|
|
EGLBoolean b;
|
|
const GLubyte *bitmap;
|
|
EGLint screenAttribs[32];
|
|
EGLint i;
|
|
|
|
EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
|
|
assert(d);
|
|
|
|
if (!eglInitialize(d, &maj, &min)) {
|
|
printf("demo: eglInitialize failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
printf("EGL version = %d.%d\n", maj, min);
|
|
printf("EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
|
|
if (!strstr(eglQueryString(d, EGL_EXTENSIONS),
|
|
"EGL_MESA_screen_surface")) {
|
|
printf("EGL_MESA_screen_surface is not supported\n");
|
|
exit(1);
|
|
}
|
|
|
|
eglGetConfigs(d, configs, 10, &numConfigs);
|
|
eglGetScreensMESA(d, &screen, 1, &count);
|
|
eglGetModesMESA(d, screen, &mode, 1, &count);
|
|
|
|
eglBindAPI(EGL_OPENGL_API);
|
|
ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
|
|
if (ctx == EGL_NO_CONTEXT) {
|
|
printf("failed to create context\n");
|
|
return 0;
|
|
}
|
|
|
|
i = 0;
|
|
screenAttribs[i++] = EGL_WIDTH;
|
|
eglGetModeAttribMESA(d, mode, EGL_WIDTH, &screenAttribs[i++]);
|
|
screenAttribs[i++] = EGL_HEIGHT;
|
|
eglGetModeAttribMESA(d, mode, EGL_HEIGHT, &screenAttribs[i++]);
|
|
screenAttribs[i] = EGL_NONE;
|
|
|
|
screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
|
|
if (screen_surf == EGL_NO_SURFACE) {
|
|
printf("failed to create screen surface\n");
|
|
return 0;
|
|
}
|
|
|
|
eglShowScreenSurfaceMESA(d, screen, screen_surf, mode);
|
|
|
|
b = eglMakeCurrent(d, screen_surf, screen_surf, ctx);
|
|
if (!b) {
|
|
printf("make current failed\n");
|
|
return 0;
|
|
}
|
|
glViewport(0, 0, 1024, 768);
|
|
|
|
|
|
Init();
|
|
Reshape(1024, 768);
|
|
|
|
/* some drivers crash when rendering to front buffer */
|
|
#if 0
|
|
glDrawBuffer( GL_FRONT );
|
|
glClearColor( 0, 1.0, 0, 1);
|
|
|
|
glClear( GL_COLOR_BUFFER_BIT );
|
|
#endif
|
|
|
|
doubleBuffer = 1;
|
|
glDrawBuffer( GL_BACK );
|
|
|
|
Draw(d, screen_surf);
|
|
sleep(2);
|
|
|
|
/* TODO EGL_KHR_lock_surface */
|
|
bitmap = NULL;
|
|
if (bitmap)
|
|
write_ppm("dump.ppm", bitmap, 1024, 768);
|
|
|
|
eglDestroySurface(d, screen_surf);
|
|
eglDestroyContext(d, ctx);
|
|
eglTerminate(d);
|
|
|
|
return 0;
|
|
}
|