nir: Store the size of the TCS output patch in nir_shader_info.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

src/glsl/nir/glsl_to_nir.cpp

@@ -167,6 +167,10 @@ glsl_to_nir(const struct gl_shader_program *shader_prog,
       shader_prog->TransformFeedback.NumVarying > 0;
 
    switch (stage) {
+   case MESA_SHADER_TESS_CTRL:
+      shader->info.tcs.vertices_out = shader_prog->TessCtrl.VerticesOut;
+      break;
+
    case MESA_SHADER_GEOMETRY:
       shader->info.gs.vertices_in = shader_prog->Geom.VerticesIn;
       shader->info.gs.output_primitive = sh->Geom.OutputType;

src/glsl/nir/nir.h

@@ -1544,6 +1544,11 @@ typedef struct nir_shader_info {
       struct {
          unsigned local_size[3];
       } cs;
+
+      struct {
+         /** The number of vertices in the TCS output patch. */
+         unsigned vertices_out;
+      } tcs;
    };
 } nir_shader_info;