WDF

Format: WDF sourceDRC.

Construction: WDF (DRC0|DRC1)

Description: Wait until specified data fence is returned from memory sub-system.

Table 1. Example:
in vec2 textureCoordinate;
out vec4 fragColor;

void main()
{
    fragColor = texelFetch(sampler, 
                ivec2(gl_FragCoord.xy), 0);
}
3    : smp2d.fcnorm.replace.integer drc0, sh4, 
             r1, sh0, sh11, r0, 4;

4    : wdf drc0