glsl: add sparseTexelsResidentARB builtin function

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14362>

src/compiler/glsl/builtin_functions.cpp

@@ -884,6 +884,12 @@ is_not_nir(const _mesa_glsl_parse_state *state)
    return !is_nir(state);
 }
 
+static bool
+sparse_enabled(const _mesa_glsl_parse_state *state)
+{
+   return state->ARB_sparse_texture2_enable;
+}
+
 static bool
 v130_desktop_and_sparse(const _mesa_glsl_parse_state *state)
 {
@@ -1167,6 +1173,9 @@ private:
    BA2(textureSize);
    BA1(textureSamples);
 
+   B0(is_sparse_texels_resident);
+   B0(is_sparse_texels_resident_intrinsic);
+
 /** Flags to _texture() */
 #define TEX_PROJECT 1
 #define TEX_OFFSET  2
@@ -1682,6 +1691,9 @@ builtin_builder::create_intrinsics()
 
    add_function("__intrinsic_helper_invocation",
                 _helper_invocation_intrinsic(), NULL);
+
+   add_function("__intrinsic_is_sparse_texels_resident",
+                _is_sparse_texels_resident_intrinsic(), NULL);
 }
 
 /**
@@ -4363,6 +4375,8 @@ builtin_builder::create_builtins()
                 _texture(ir_tg4, gpu_shader5_and_sparse, glsl_type::vec4_type, glsl_type::sampler2DRectShadow_type,  glsl_type::vec2_type, TEX_OFFSET_ARRAY|TEX_SPARSE),
                 NULL);
 
+   add_function("sparseTexelsResidentARB", _is_sparse_texels_resident(), NULL);
+
    F(dFdx)
    F(dFdy)
    F(fwidth)
@@ -6912,6 +6926,30 @@ builtin_builder::_textureSamples(builtin_available_predicate avail,
    return sig;
 }
 
+ir_function_signature *
+builtin_builder::_is_sparse_texels_resident(void)
+{
+   ir_variable *code = in_var(glsl_type::int_type, "code");
+   MAKE_SIG(glsl_type::bool_type, sparse_enabled, 1, code);
+
+   ir_variable *retval = body.make_temp(glsl_type::bool_type, "retval");
+   ir_function *f =
+      shader->symbols->get_function("__intrinsic_is_sparse_texels_resident");
+
+   body.emit(call(f, retval, sig->parameters));
+   body.emit(ret(retval));
+   return sig;
+}
+
+ir_function_signature *
+builtin_builder::_is_sparse_texels_resident_intrinsic(void)
+{
+   ir_variable *code = in_var(glsl_type::int_type, "code");
+   MAKE_INTRINSIC(glsl_type::bool_type, ir_intrinsic_is_sparse_texels_resident,
+                  sparse_enabled, 1, code);
+   return sig;
+}
+
 ir_function_signature *
 builtin_builder::_texture(ir_texture_opcode opcode,
                           builtin_available_predicate avail,

src/compiler/glsl/ir.h

@@ -1174,6 +1174,8 @@ enum ir_intrinsic_id {
    ir_intrinsic_shared_atomic_max = MAKE_INTRINSIC_FOR_TYPE(atomic_max, shared),
    ir_intrinsic_shared_atomic_exchange = MAKE_INTRINSIC_FOR_TYPE(atomic_exchange, shared),
    ir_intrinsic_shared_atomic_comp_swap = MAKE_INTRINSIC_FOR_TYPE(atomic_comp_swap, shared),
+
+   ir_intrinsic_is_sparse_texels_resident,
 };
 
 /*@{*/

src/mesa/state_tracker/st_glsl_to_tgsi.cpp

@@ -4348,6 +4348,7 @@ glsl_to_tgsi_visitor::visit(ir_call *ir)
    case ir_intrinsic_begin_invocation_interlock:
    case ir_intrinsic_end_invocation_interlock:
    case ir_intrinsic_image_sparse_load:
+   case ir_intrinsic_is_sparse_texels_resident:
       unreachable("Invalid intrinsic");
    }
 }