Cube  Diff

}

int skyoglid;

struct strip {
	int tex, start, num;
};
static OFMutableData *strips;

void
renderstripssky()
{
	glBindTexture(GL_TEXTURE_2D, skyoglid);

	const strip *items = (const strip *)strips.items;
	size_t count = strips.count;
	for (size_t i = 0; i < count; i++)
		if (items[i].tex == skyoglid)
			glDrawArrays(
			    GL_TRIANGLE_STRIP, items[i].start, items[i].num);
}

void
renderstrips()
{
	int lasttex = -1;
	const strip *items = (const strip *)strips.items;
	size_t count = strips.count;
	for (size_t i = 0; i < count; i++) {
		if (items[i].tex == skyoglid)
			continue;

		if (items[i].tex != lasttex) {
			glBindTexture(GL_TEXTURE_2D, items[i].tex);
			lasttex = items[i].tex;
		}

		glDrawArrays(GL_TRIANGLE_STRIP, items[i].start, items[i].num);
	}
}

void
overbright(float amount)
{
	if (hasoverbright)
		glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT, amount);
}

void
addstrip(int tex, int start, int n)
{
	if (strips == nil)
		strips = [[OFMutableData alloc] initWithItemSize:sizeof(strip)];

	strip s = { .tex = tex, .start = start, .num = n };

	[strips addItem:&s];
}

VARFP(gamma, 30, 100, 300, {
	float f = gamma / 100.0f;
	Uint16 ramp[256];

	SDL_CalculateGammaRamp(f, ramp);

	int xs, ys;
	skyoglid = lookuptexture(DEFAULT_SKY, &xs, &ys);

	resetcubes();

	curvert = 0;
	[strips removeAllItems];

	render_world(player1.o.x, player1.o.y, player1.o.z, (int)player1.yaw,
	    (int)player1.pitch, (float)fov, w, h);
	finishstrips();

	setupworld();