glsl: add EXT_shader_image_load_store new image functions

This extension has 2 functions that are missing from the ARB versions:
- imageAtomicIncWrap
- imageAtomicDecWrap

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/compiler/glsl/builtin_functions.cpp

@@ -4423,6 +4423,18 @@ builtin_builder::add_image_functions(bool glsl)
                       flags | IMAGE_FUNCTION_SUPPORTS_FLOAT_DATA_TYPE |
                       IMAGE_FUNCTION_MS_ONLY,
                       ir_intrinsic_image_samples);
+
+   /* EXT_shader_image_load_store */
+   add_image_function(glsl ? "imageAtomicIncWrap" : "__intrinsic_image_atomic_inc_wrap",
+                      "__intrinsic_image_atomic_inc_wrap",
+                      &builtin_builder::_image_prototype, 1,
+                      (atom_flags | IMAGE_FUNCTION_EXT_ONLY),
+                      ir_intrinsic_image_atomic_inc_wrap);
+   add_image_function(glsl ? "imageAtomicDecWrap" : "__intrinsic_image_atomic_dec_wrap",
+                      "__intrinsic_image_atomic_dec_wrap",
+                      &builtin_builder::_image_prototype, 1,
+                      (atom_flags | IMAGE_FUNCTION_EXT_ONLY),
+                      ir_intrinsic_image_atomic_dec_wrap);
 }
 
 ir_variable *

src/compiler/glsl/ir.h

@@ -1106,6 +1106,8 @@ enum ir_intrinsic_id {
    ir_intrinsic_image_atomic_comp_swap,
    ir_intrinsic_image_size,
    ir_intrinsic_image_samples,
+   ir_intrinsic_image_atomic_inc_wrap,
+   ir_intrinsic_image_atomic_dec_wrap,
 
    ir_intrinsic_ssbo_load,
    ir_intrinsic_ssbo_store = MAKE_INTRINSIC_FOR_TYPE(store, ssbo),

src/mesa/state_tracker/st_glsl_to_tgsi.cpp

@@ -3938,6 +3938,12 @@ glsl_to_tgsi_visitor::visit_image_intrinsic(ir_call *ir)
       case ir_intrinsic_image_atomic_comp_swap:
          opcode = TGSI_OPCODE_ATOMCAS;
          break;
+      case ir_intrinsic_image_atomic_inc_wrap:
+         opcode = TGSI_OPCODE_ATOMINC_WRAP;
+         break;
+      case ir_intrinsic_image_atomic_dec_wrap:
+         opcode = TGSI_OPCODE_ATOMDEC_WRAP;
+         break;
       default:
          assert(!"Unexpected intrinsic");
          return;
@@ -4063,6 +4069,8 @@ glsl_to_tgsi_visitor::visit(ir_call *ir)
    case ir_intrinsic_image_atomic_comp_swap:
    case ir_intrinsic_image_size:
    case ir_intrinsic_image_samples:
+   case ir_intrinsic_image_atomic_inc_wrap:
+   case ir_intrinsic_image_atomic_dec_wrap:
       visit_image_intrinsic(ir);
       return;