mesa: Use functions to convert gl_shader_stage to PROGRAM enum or pipe target.

Suggested-by: Brian Paul <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

v2: Improve assert message.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/mesa/program/program.h b/src/mesa/program/program.h
index 4015b4c202b..0e350cd6f86 100644
--- a/src/mesa/program/program.h
+++ b/src/mesa/program/program.h
@@ -207,6 +207,24 @@ _mesa_program_enum_to_shader_stage(GLenum v)
    }
 }
 
+
+static inline GLenum
+_mesa_shader_stage_to_program(gl_shader_stage stage)
+{
+   switch (stage) {
+   case MESA_SHADER_VERTEX:
+      return GL_VERTEX_PROGRAM_ARB;
+   case MESA_SHADER_FRAGMENT:
+      return GL_FRAGMENT_PROGRAM_ARB;
+   case MESA_SHADER_GEOMETRY:
+      return GL_GEOMETRY_PROGRAM_NV;
+   }
+
+   assert(!"Unexpected shader stage in _mesa_shader_stage_to_program");
+   return GL_VERTEX_PROGRAM_ARB;
+}
+
+
 static inline GLenum
 _mesa_program_index_to_target(GLuint i)
 {