Mesa (master): iris: Make a gl_shader_stage -> pipe_shader_stage helper function

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Module: Mesa
Branch: master
Commit: 72277044e22dc43064340630911123ba3331dd85
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=72277044e22dc43064340630911123ba3331dd85

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Tue Apr 16 23:54:37 2019 -0700

iris: Make a gl_shader_stage -> pipe_shader_stage helper function

This is probably not the best place for it, but I don't feel like moving
the one out of the TGSI translator today, and we already have the other
direction here, so...*shrug*

---

 src/gallium/drivers/iris/iris_pipe.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/gallium/drivers/iris/iris_pipe.h b/src/gallium/drivers/iris/iris_pipe.h
index dac81009168..b859e650ffb 100644
--- a/src/gallium/drivers/iris/iris_pipe.h
+++ b/src/gallium/drivers/iris/iris_pipe.h
@@ -40,6 +40,20 @@ stage_from_pipe(enum pipe_shader_type pstage)
    return stages[pstage];
 }
 
+static inline enum pipe_shader_type
+stage_to_pipe(gl_shader_stage stage)
+{
+   static const enum pipe_shader_type pstages[MESA_SHADER_STAGES] = {
+      [MESA_SHADER_VERTEX] = PIPE_SHADER_VERTEX,
+      [MESA_SHADER_TESS_CTRL] = PIPE_SHADER_TESS_CTRL,
+      [MESA_SHADER_TESS_EVAL] = PIPE_SHADER_TESS_EVAL,
+      [MESA_SHADER_GEOMETRY] = PIPE_SHADER_GEOMETRY,
+      [MESA_SHADER_FRAGMENT] = PIPE_SHADER_FRAGMENT,
+      [MESA_SHADER_COMPUTE] = PIPE_SHADER_COMPUTE,
+   };
+   return pstages[stage];
+}
+
 /**
  * Convert an swizzle enumeration (i.e. PIPE_SWIZZLE_X) to one of the HW's
  * "Shader Channel Select" enumerations (i.e. SCS_RED).  The mappings are