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New nonuniform analysis (#2457)

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This implements a new nonunifom analysis suggested by @jbolz. This change
generates nonUniform decorations that were previously missing and avoids
generation of incorrect decorations. Most notably, it now generates
decorations for nonuniform functions and out params. It avoids generating
decorations for lvalues which themselves are not nonuniform.
This commit is contained in:
greg-lunarg 2020-11-12 11:10:07 -07:00 • committed by GitHub
parent 74e8f05b9f
commit 639f5461e3
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 496 additions and 373 deletions
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11
Test/spv.nonuniform.frag
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@ -28,10 +28,12 @@ nonuniformEXT int foo(nonuniformEXT int nupi, nonuniformEXT out int f)
void main()
{
nonuniformEXT int nu_li;
nonuniformEXT int nu_li2;
int dyn_i;
int a = foo(nu_li, nu_li);
nu_li = nonuniformEXT(a) + nonuniformEXT(a * 2);
nu_li2 = a + nonuniformEXT(a * 2);
float b;
b = nu_inv4.x * nu_gf;
@ -46,16 +48,25 @@ void main()
b += texelFetch(uniformTexelBuffer[nu_ii], 1).x;
b += imageLoad(storageTexelBuffer[nu_ii], 1).x;
b += texture(sampler2D(uniformTexArr[nu_ii], uniformSampler), inTexcoord.xy).x;
b += texture(nonuniformEXT(sampler2D(uniformTexArr[nu_ii], uniformSampler)), inTexcoord.xy).x;
nonuniformEXT ivec4 v;
nonuniformEXT mat4 m;
nonuniformEXT struct S { int a; } s;
nonuniformEXT int arr[10];
ivec4 uv;
mat4 um;
struct US { int a[10]; } us;
int uarr[10];
b += uniformBuffer[v.y].a;
b += uniformBuffer[v[2]].a;
b += uniformBuffer[uv[nu_ii]].a;
b += uniformBuffer[int(m[2].z)].a;
b += uniformBuffer[s.a].a;
b += uniformBuffer[arr[2]].a;
b += uniformBuffer[int(um[nu_ii].z)].a;
b += uniformBuffer[us.a[nu_ii]].a;
b += uniformBuffer[uarr[nu_ii]].a;
storageBuffer[nu_ii].b = b;
}