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      1 #version 450
      2 
      3 #extension GL_NV_shader_texture_footprint : require
      4 
      5 
      6 layout (location = 0) in vec2 P2;
      7 layout (location = 2) in vec3 P3;
      8 layout (location = 3) in flat int granularity;
      9 layout (location = 4) in float lodClamp;
     10 layout (location = 5) in float lod;
     11 layout (location = 6) in vec2 dx;
     12 layout (location = 8) in vec2 dy;
     13 layout (location = 9) in float bias;
     14 
     15 uniform sampler2D sample2D;
     16 uniform sampler3D sample3D;
     17 
     18 buffer result2D {
     19     bool ret2D;
     20     uvec2 anchor2D;
     21     uvec2 offset2D;
     22     uvec2 mask2D;
     23     uint lod2D;
     24     uint granularity2D;
     25 };
     26 
     27 buffer result3D {
     28     bool ret3D;
     29     uvec3 anchor3D;
     30     uvec3 offset3D;
     31     uvec2 mask3D;
     32     uint lod3D;
     33     uint granularity3D;
     34 };
     35 
     36 void main() {
     37  gl_TextureFootprint2DNV fp2D;
     38  gl_TextureFootprint3DNV fp3D;
     39  
     40  ret2D = textureFootprintNV(sample2D, P2, granularity, true, fp2D);
     41  anchor2D = fp2D.anchor;
     42  offset2D = fp2D.offset;
     43  mask2D = fp2D.mask;
     44  lod2D = fp2D.lod;
     45  granularity2D = fp2D.granularity;
     46  
     47  ret2D = textureFootprintNV(sample2D, P2, granularity, true, fp2D, bias);
     48  anchor2D += fp2D.anchor;
     49  offset2D += fp2D.offset;
     50  mask2D += fp2D.mask;
     51  lod2D += fp2D.lod;
     52  granularity2D += fp2D.granularity;
     53  
     54  ret2D = textureFootprintClampNV(sample2D, P2, lodClamp, granularity, true, fp2D);
     55  anchor2D += fp2D.anchor;
     56  offset2D += fp2D.offset;
     57  mask2D += fp2D.mask;
     58  lod2D += fp2D.lod;
     59  granularity2D += fp2D.granularity;
     60  
     61  ret2D = textureFootprintClampNV(sample2D, P2, lodClamp, granularity, true, fp2D, bias);
     62  anchor2D += fp2D.anchor;
     63  offset2D += fp2D.offset;
     64  mask2D += fp2D.mask;
     65  lod2D += fp2D.lod;
     66  granularity2D += fp2D.granularity;
     67  
     68  ret2D = textureFootprintLodNV(sample2D, P2, lod, granularity, true, fp2D);
     69  anchor2D += fp2D.anchor;
     70  offset2D += fp2D.offset;
     71  mask2D += fp2D.mask;
     72  lod2D += fp2D.lod;
     73  granularity2D += fp2D.granularity;
     74  
     75  ret2D = textureFootprintGradNV(sample2D, P2, dx, dy, granularity, true, fp2D);
     76  anchor2D += fp2D.anchor;
     77  offset2D += fp2D.offset;
     78  mask2D += fp2D.mask;
     79  lod2D += fp2D.lod;
     80  granularity2D += fp2D.granularity;
     81  
     82  ret2D = textureFootprintGradClampNV(sample2D, P2, dx, dy, lodClamp, granularity, true, fp2D);
     83  anchor2D += fp2D.anchor;
     84  offset2D += fp2D.offset;
     85  mask2D += fp2D.mask;
     86  lod2D += fp2D.lod;
     87  granularity2D += fp2D.granularity;
     88  
     89  ret3D = textureFootprintNV(sample3D, P3, granularity, true, fp3D);
     90  anchor3D = fp3D.anchor;
     91  offset3D = fp3D.offset;
     92  mask3D = fp3D.mask;
     93  lod3D = fp3D.lod;
     94  granularity3D = fp3D.granularity;
     95  
     96  ret3D = textureFootprintNV(sample3D, P3, granularity, true, fp3D, bias);
     97  anchor3D += fp3D.anchor;
     98  offset3D += fp3D.offset;
     99  mask3D += fp3D.mask;
    100  lod3D += fp3D.lod;
    101  granularity3D += fp3D.granularity;
    102  
    103  ret3D = textureFootprintClampNV(sample3D, P3, lodClamp, granularity, true, fp3D);
    104  anchor3D += fp3D.anchor;
    105  offset3D += fp3D.offset;
    106  mask3D += fp3D.mask;
    107  lod3D += fp3D.lod;
    108  granularity3D += fp3D.granularity;
    109  
    110  ret3D = textureFootprintClampNV(sample3D, P3, lodClamp, granularity, true, fp3D, bias);
    111  anchor3D += fp3D.anchor;
    112  offset3D += fp3D.offset;
    113  mask3D += fp3D.mask;
    114  lod3D += fp3D.lod;
    115  granularity3D += fp3D.granularity;
    116  
    117  ret3D = textureFootprintLodNV(sample3D, P3, lod, granularity, true, fp3D);
    118  anchor3D += fp3D.anchor;
    119  offset3D += fp3D.offset;
    120  mask3D += fp3D.mask;
    121  lod3D += fp3D.lod;
    122  granularity3D += fp3D.granularity;
    123 }