st/mesa: fix GLSL 1.30 texture shadow functions with the GL_ALPHA depth mode (v2)

Fixes piglit:
    [email protected]@execution@fs-texture-sampler2dshadow-10
    [email protected]@execution@fs-texture-sampler2dshadow-11

v2: use st_shader_stage_to_ptarget

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

1 files changed, 23 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index a68f881c81c..48c9b6f0bb9 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -279,6 +279,29 @@ st_fb_orientation(const struct gl_framebuffer *fb)
 }
 
 
+static inline unsigned
+st_shader_stage_to_ptarget(gl_shader_stage stage)
+{
+   switch (stage) {
+   case MESA_SHADER_VERTEX:
+      return PIPE_SHADER_VERTEX;
+   case MESA_SHADER_FRAGMENT:
+      return PIPE_SHADER_FRAGMENT;
+   case MESA_SHADER_GEOMETRY:
+      return PIPE_SHADER_GEOMETRY;
+   case MESA_SHADER_TESS_CTRL:
+      return PIPE_SHADER_TESS_CTRL;
+   case MESA_SHADER_TESS_EVAL:
+      return PIPE_SHADER_TESS_EVAL;
+   case MESA_SHADER_COMPUTE:
+      return PIPE_SHADER_COMPUTE;
+   }
+
+   assert(!"should not be reached");
+   return PIPE_SHADER_VERTEX;
+}
+
+
 /** clear-alloc a struct-sized object, with casting */
 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))