src/gallium/drivers/radeonsi/glsl_tests/pack_unpack_half.glsl

   1 ; RUN: ./amdgcn_glslc %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
   2
   3 ; We don't want any "v_and" or "v_or" here. v_cvt_f16 only writes the lower 16 bits.
   4
   5 ; FUNC-LABEL: {{^}}@packhalf:
   6 ; GCN: main
   7 ; GCN: v_interp_mov
   8 ; GCN: v_interp_mov
   9 ; GCN-NEXT: v_cvt_f16_f32
  10 ; GCN-NEXT: v_lshlrev_b32
  11 ; GCN-NEXT: v_cvt_f16_f32
  12 ; GCN-NEXT: epilog
  13
  14 #shader fs packhalf
  15 #version 420
  16 flat in vec2 v;
  17 out uvec4 o;
  18 void main() {
  19     o.x = packHalf2x16(v);
  20 }
  21
  22
  23 ; FUNC-LABEL: {{^}}@unpackhalf:
  24 ; GCN: main
  25 ; GCN: v_interp_mov
  26 ; GCN-NEXT: v_cvt_f32_f16
  27 ; GCN-NEXT: v_lshrrev_b32
  28 ; GCN-NEXT: v_cvt_f32_f16
  29 ; GCN-NEXT: epilog
  30
  31 #shader fs unpackhalf
  32 #version 420
  33 flat in uint u;
  34 out vec4 o;
  35 void main() {
  36     o.xy = unpackHalf2x16(u);
  37 }