mesa: add TexShadow field to prog_instruction

If the instruction is TEX/TXP/TXL/etc the TexShadow field will be true if
the instruction is a texture fetch with shadow compare.

3 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/shader/arbprogparse.c b/src/mesa/shader/arbprogparse.c
index 2e0fc3694a..62edb7f595 100644
--- a/src/mesa/shader/arbprogparse.c
+++ b/src/mesa/shader/arbprogparse.c
@@ -3104,6 +3104,9 @@ parse_fp_instruction (GLcontext * ctx, const GLubyte ** inst,
                break;
          }
 
+         if (shadow_tex)
+            fp->TexShadow = 1;
+
          /* Don't test the first time a particular sampler is seen.  Each time
           * after that, make sure the shadow state is the same.
           */
diff --git a/src/mesa/shader/prog_instruction.h b/src/mesa/shader/prog_instruction.h
index 84dd98b498..e3bb7ac01d 100644
--- a/src/mesa/shader/prog_instruction.h
+++ b/src/mesa/shader/prog_instruction.h
@@ -396,6 +396,9 @@ struct prog_instruction
    
    /** Source texture target, one of TEXTURE_{1D,2D,3D,CUBE,RECT}_INDEX */
    GLuint TexSrcTarget:3;
+
+   /** True if tex instruction should do shadow comparison */
+   GLuint TexShadow:1;
    /*@}*/
 
    /**
diff --git a/src/mesa/shader/prog_print.c b/src/mesa/shader/prog_print.c
index 516ea73301..80be51c3c5 100644
--- a/src/mesa/shader/prog_print.c
+++ b/src/mesa/shader/prog_print.c
@@ -592,6 +592,8 @@ _mesa_fprint_instruction_opt(FILE *f,
       default:
          ;
       }
+      if (inst->TexShadow)
+         _mesa_fprintf(f, " SHADOW");
       fprint_comment(f, inst);
       break;