dcl_samplerType - ps

Declare a pixel shader sampler.

Syntax

where:

• _samplerType defines the sampler data type. This determines how many coordinates are required by each texture coordinate when sampling. The following texture coordinate dimensions are defined.
  • _2d
  • _cube
  • _volume
• s# identifies a sampler where s is an abbreviation for the sampler, and # is the sampler number. Samplers are pseudo registers because you cannot directly read or write to them.

Remarks

All dcl_samplerType instructions must appear before the first executable instruction.

Example

dcl_cube t0.rgb;  // Define a 3D texture map.

add r0, r0, t0;   // Perturb texture coordinates. 
texld r0, s0, r0; // Load r0 with a color sampled from stage0
                  //   at perturbed texture coordinates r0.
                  // This is a dependent texture read.