void glViewport(GLint x, GLint y, GLsizei width, GLsizei height) {
PUSH_IF_COMPILING(glViewport);
LOAD_GLES(glViewport);
if (raster) {
render_raster();
}
gles_glViewport(x, y, width, height);
viewport.x = x;
viewport.y = y;
viewport.width = width;
viewport.height = height;
}
void glViewport(GLint x, GLint y, GLsizei width, GLsizei height) {
PUSH_IF_COMPILING(glViewport);
if (state.raster.buf) {
render_raster();
}
if (width < 0 || height < 0) {
ERROR(GL_INVALID_VALUE);
}
update_viewport(x, y, width, height);
LOAD_GLES(glViewport);
gles_glViewport(x, y, width, height);
}
void glViewport(GLint x, GLint y, GLsizei width, GLsizei height) {
PUSH_IF_COMPILING(glViewport);
PROXY_GLES(glViewport);
if (state.raster.buf) {
render_raster();
}
gles_glViewport(x, y, width, height);
viewport_state_t *viewport = &state.viewport;
viewport->x = x;
viewport->y = y;
viewport->width = width;
viewport->height = height;
viewport->nwidth = npot(width);
viewport->nheight = npot(height);
}
void glXSwapBuffers(Display *display,
int drawable) {
static int frames = 0;
render_raster();
if (g_vsync && fbdev >= 0) {
// TODO: can I just return if I don't meet vsync over multiple frames?
// this will just block otherwise.
int arg = 0;
for (int i = 0; i < swap_interval; i++) {
ioctl(fbdev, FBIO_WAITFORVSYNC, &arg);
}
}
eglSwapBuffers(eglDisplay, eglSurface);
CheckEGLErrors();
if (g_showfps) {
// framerate counter
static float avg, fps = 0;
static int frame1, last_frame, frame, now, current_frames;
struct timeval out;
gettimeofday(&out, NULL);
now = out.tv_sec;
frame++;
current_frames++;
if (frame == 1) {
frame1 = now;
} else if (frame1 < now) {
if (last_frame < now) {
float change = current_frames / (float)(now - last_frame);
float weight = 0.7;
if (! fps) {
fps = change;
} else {
fps = (1 - weight) * fps + weight * change;
}
current_frames = 0;
avg = frame / (float)(now - frame1);
printf("libGL fps: %.2f, avg: %.2f\n", fps, avg);
}
}
last_frame = now;
}
}
