#version 460
#extension GL_QCOM_tile_shading : enable 

layout (local_size_x = 16, local_size_y = 16, local_size_z = 1) in;

layout (set=0, binding=0, tile_attachmentQCOM, rgba32f) uniform highp image2D input0;

// tile color attachments (new syntax)
layout (set=0, binding=1, tile_attachmentQCOM, rgba32f) uniform highp image2D  color0; // attachment0
layout (set=0, binding=2, tile_attachmentQCOM, rgba32i) uniform highp iimage2D color1; // attachment1


// depth/stencil attachments
layout (set=0, binding=3, tile_attachmentQCOM, rgba32f) uniform highp image2D  depth;
layout (set=0, binding=4, tile_attachmentQCOM, rgba32ui) uniform highp uimage2D stencil;

void main ()
{
  uvec2 uoffset = clamp(gl_GlobalInvocationID.xy, gl_TileOffsetQCOM, gl_TileOffsetQCOM + gl_TileDimensionQCOM.xy - uvec2(1.1));
  ivec2 offset = ivec2(uoffset);

  // read from attachments 
  vec4  colorA   = imageLoad( color0, offset );
  ivec4 icolorB  = imageLoad( color1, offset );
  vec4  colorC   = imageLoad( input0, offset );
  float d        = imageLoad( depth, offset ).x;
  uint  s        = imageLoad( stencil, offset ).x;
  
  // compute output values
  vec4 outColor   = ( colorA + vec4(icolorB) + colorC ) * 0.33f;
  float outDepth  = d * 2.0f;
  uint outStencil = s + uint(1);
  
  // write to attachments
  imageStore( color0,  offset, outColor );
  imageStore( depth,   offset, vec4(outDepth) );
  imageStore( stencil, offset, uvec4(outStencil) );
}