glsl: remove ActiveStreamMask field

There is no need to pass this value around just store it directly
in the shader info.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28709>

src/compiler/glsl/gl_nir_linker.c

@@ -227,7 +227,7 @@ validate_geometry_shader_emissions(const struct gl_constants *consts,
                          "EmitStreamVertex" : "EndStreamPrimitive",
                       state.invalid_stream_id, state.max_stream_allowed);
       }
-      prog->Geom.ActiveStreamMask = state.used_streams;
+      sh->Program->nir->info.gs.active_stream_mask = state.used_streams;
       prog->Geom.UsesEndPrimitive = state.end_primitive_found;
 
       /* From the ARB_gpu_shader5 spec:
@@ -250,11 +250,11 @@ validate_geometry_shader_emissions(const struct gl_constants *consts,
        * Since we can call EmitVertex() and EndPrimitive() when we output
        * primitives other than points, calling EmitStreamVertex(0) or
        * EmitEndPrimitive(0) should not produce errors. This it also what Nvidia
-       * does. We can use prog->Geom.ActiveStreamMask to check whether only the
+       * does. We can use info.gs.active_stream_mask to check whether only the
        * first (zero) stream is active.
        * stream.
        */
-      if (prog->Geom.ActiveStreamMask & ~(1 << 0) &&
+      if (sh->Program->nir->info.gs.active_stream_mask & ~(1 << 0) &&
           sh->Program->info.gs.output_primitive != MESA_PRIM_POINTS) {
          linker_error(prog, "EmitStreamVertex(n) and EndStreamPrimitive(n) "
                       "with n>0 requires point output\n");

src/mesa/main/shader_types.h

@@ -428,7 +428,6 @@ struct gl_shader_program
     */
    struct {
       bool UsesEndPrimitive;
-      unsigned ActiveStreamMask;
    } Geom;
 
    /** Data shared by gl_program and gl_shader_program */

src/mesa/main/shaderapi.c

@@ -2661,7 +2661,6 @@ _mesa_copy_linked_program_data(const struct gl_shader_program *src,
    switch (dst_sh->Stage) {
    case MESA_SHADER_GEOMETRY: {
       dst->info.gs.uses_end_primitive = src->Geom.UsesEndPrimitive;
-      dst->info.gs.active_stream_mask = src->Geom.ActiveStreamMask;
       break;
    }
    default:

src/mesa/main/shaderobj.c

@@ -299,7 +299,6 @@ init_shader_program(struct gl_shader_program *prog)
    prog->FragDataIndexBindings = string_to_uint_map_ctor();
 
    prog->Geom.UsesEndPrimitive = false;
-   prog->Geom.ActiveStreamMask = 0;
 
    prog->TransformFeedback.BufferMode = GL_INTERLEAVED_ATTRIBS;