Mesa (master): nir: add glsl_channel_type() helper

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: 3b59f5ca170a5459e2f7cd5a0d0142f6e15dde3c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3b59f5ca170a5459e2f7cd5a0d0142f6e15dde3c

Author: Timothy Arceri <tarceri at itsqueeze.com>
Date:   Wed Sep 20 09:49:57 2017 +1000

nir: add glsl_channel_type() helper

Reviewed-by: Eric Anholt <eric at anholt.net>

---

 src/compiler/nir_types.cpp | 27 +++++++++++++++++++++++++++
 src/compiler/nir_types.h   |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/src/compiler/nir_types.cpp b/src/compiler/nir_types.cpp
index b0d84aae38..b1b17ebd83 100644
--- a/src/compiler/nir_types.cpp
+++ b/src/compiler/nir_types.cpp
@@ -397,3 +397,30 @@ glsl_transposed_type(const struct glsl_type *type)
    return glsl_type::get_instance(type->base_type, type->matrix_columns,
                                   type->vector_elements);
 }
+
+const glsl_type *
+glsl_channel_type(const glsl_type *t)
+{
+   switch (glsl_get_base_type(t)) {
+   case GLSL_TYPE_ARRAY: {
+      const glsl_type *base = glsl_channel_type(glsl_get_array_element(t));
+      return glsl_array_type(base, glsl_get_length(t));
+   }
+   case GLSL_TYPE_UINT:
+      return glsl_uint_type();
+   case GLSL_TYPE_INT:
+      return glsl_int_type();
+   case GLSL_TYPE_FLOAT:
+      return glsl_float_type();
+   case GLSL_TYPE_BOOL:
+      return glsl_bool_type();
+   case GLSL_TYPE_DOUBLE:
+      return glsl_double_type();
+   case GLSL_TYPE_UINT64:
+      return glsl_uint64_t_type();
+   case GLSL_TYPE_INT64:
+      return glsl_int64_t_type();
+   default:
+      unreachable("Unhandled base type glsl_channel_type()");
+   }
+}
diff --git a/src/compiler/nir_types.h b/src/compiler/nir_types.h
index d9a9513b9f..9f398b9278 100644
--- a/src/compiler/nir_types.h
+++ b/src/compiler/nir_types.h
@@ -163,6 +163,8 @@ const struct glsl_type * glsl_function_type(const struct glsl_type *return_type,
 
 const struct glsl_type *glsl_transposed_type(const struct glsl_type *type);
 
+const struct glsl_type *glsl_channel_type(const struct glsl_type *type);
+
 #ifdef __cplusplus
 }
 #endif