glsl: Add shared variable type

Shared variables are stored in a common pool accessible by all threads
in a compute shader local work group.

These variables are similar to OpenCL's local/__local variables.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index e576db5..32a766e 100644 (file)
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -325,6 +325,7 @@ enum ir_variable_mode {
    ir_var_auto = 0,             /**< Function local variables and globals. */
    ir_var_uniform,              /**< Variable declared as a uniform. */
    ir_var_shader_storage,       /**< Variable declared as an ssbo. */
    ir_var_auto = 0,             /**< Function local variables and globals. */
    ir_var_uniform,              /**< Variable declared as a uniform. */
    ir_var_shader_storage,       /**< Variable declared as an ssbo. */

+   ir_var_shader_shared,        /**< Variable declared as shared. */

    ir_var_shader_in,
    ir_var_shader_out,
    ir_var_function_in,
    ir_var_shader_in,
    ir_var_shader_out,
    ir_var_function_in,

diff --git a/src/glsl/ir_print_visitor.cpp b/src/glsl/ir_print_visitor.cpp
index 211ac76..42b03fd 100644 (file)
--- a/src/glsl/ir_print_visitor.cpp
+++ b/src/glsl/ir_print_visitor.cpp
@@ -174,7 +174,7 @@ void ir_print_visitor::visit(ir_variable *ir)
    const char *const patc = (ir->data.patch) ? "patch " : "";
    const char *const inv = (ir->data.invariant) ? "invariant " : "";
    const char *const mode[] = { "", "uniform ", "shader_storage ",
    const char *const patc = (ir->data.patch) ? "patch " : "";
    const char *const inv = (ir->data.invariant) ? "invariant " : "";
    const char *const mode[] = { "", "uniform ", "shader_storage ",

-                                "shader_in ", "shader_out ",
+                                "shader_shared ", "shader_in ", "shader_out ",

                                 "in ", "out ", "inout ",
                                "const_in ", "sys ", "temporary " };
    STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);
                                 "in ", "out ", "inout ",
                                "const_in ", "sys ", "temporary " };
    STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);