1.1 --- a/src/volray.c	Wed Apr 04 01:37:58 2012 +0300
     1.2 +++ b/src/volray.c	Thu Apr 05 00:52:11 2012 +0300
     1.3 @@ -54,11 +54,12 @@
     1.4  int raytex_needs_recalc = 1;
     1.5  
     1.6  unsigned int xfer_tex;
     1.7 -float xfer_mean = 0.5, xfer_sdev = 1.0;
     1.8 +float xfer_mean = 0.7, xfer_sdev = 0.1;
     1.9  int xfertex_needs_recalc = 1;
    1.10  
    1.11  static int uimode;
    1.12 -static float cur_z = 0.5;
    1.13 +static float cur_z = 0.0;
    1.14 +static float ray_step = 0.01;
    1.15  
    1.16  int main(int argc, char **argv)
    1.17  {
    1.18 @@ -99,6 +100,8 @@
    1.19  	set_uniform_int(vol_sdr, "volume", 0);
    1.20  	set_uniform_int(vol_sdr, "ray_tex", 1);
    1.21  	set_uniform_int(vol_sdr, "xfer_tex", 2);
    1.22 +	set_uniform_float(vol_sdr, "ray_step", ray_step);
    1.23 +	set_uniform_float(vol_sdr, "zclip", cur_z);
    1.24  
    1.25  	if(!(slice_sdr = create_program_load(0, "slice.p.glsl"))) {
    1.26  		return -1;
    1.27 @@ -127,7 +130,7 @@
    1.28  
    1.29  		if(i == 0) {
    1.30  			/* allocate storage for the texture */
    1.31 -			glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA, xsz, ysz, nslices, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
    1.32 +			glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA32F, xsz, ysz, nslices, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
    1.33  
    1.34  			vol_xsz = xsz;
    1.35  			vol_ysz = ysz;
    1.36 @@ -388,6 +391,8 @@
    1.37  			cur_z = 0.0;
    1.38  		if(cur_z > 1.0)
    1.39  			cur_z = 1.0;
    1.40 +
    1.41 +		set_uniform_float(vol_sdr, "zclip", cur_z);
    1.42  		glutPostRedisplay();
    1.43  		break;
    1.44