Initial implementation of MESA_texture_array

Shadow sampling from texture arrays is still not implemented.  Everything
else should be there, though.

3 files changed, 50 insertions, 8 deletions

diff --git a/src/mesa/shader/arbprogparse.c b/src/mesa/shader/arbprogparse.c
index 5027264f031..7da3c19a89a 100644
--- a/src/mesa/shader/arbprogparse.c
+++ b/src/mesa/shader/arbprogparse.c
@@ -181,7 +181,7 @@ LONGSTRING static char arb_grammar_text[] =
     - changed and merged V_* and F_* opcode values to OP_*.
     - added GL_ARB_fragment_program_shadow specific tokens (michal)
 */
-#define  REVISION                                   0x09
+#define  REVISION                                   0x0a
 
 /* program type */
 #define  FRAGMENT_PROGRAM                           0x01
@@ -209,6 +209,9 @@ LONGSTRING static char arb_grammar_text[] =
 /* GL_ARB_draw_buffers option */
 #define  ARB_DRAW_BUFFERS                           0x07
 
+/* GL_MESA_texture_array option */
+#define  MESA_TEXTURE_ARRAY                        0x08
+
 /* GL_ARB_fragment_program instruction class */
 #define  OP_ALU_INST                                0x00
 #define  OP_TEX_INST                                0x01
@@ -368,6 +371,9 @@ LONGSTRING static char arb_grammar_text[] =
 #define  TEXTARGET_SHADOW1D                         0x06
 #define  TEXTARGET_SHADOW2D                         0x07
 #define  TEXTARGET_SHADOWRECT                       0x08
+/* GL_MESA_texture_array */
+#define  TEXTARGET_1D_ARRAY                         0x09
+#define  TEXTARGET_2D_ARRAY                         0x0a
 
 /* face type */
 #define  FACE_FRONT                                 0x00
@@ -2990,6 +2996,12 @@ parse_fp_instruction (GLcontext * ctx, const GLubyte ** inst,
 	    case TEXTARGET_SHADOWRECT:
 	       /* TODO ARB_fragment_program_shadow code */
 	       break;
+            case TEXTARGET_1D_ARRAY:
+               fp->TexSrcTarget = TEXTURE_1D_ARRAY_INDEX;
+               break;
+            case TEXTARGET_2D_ARRAY:
+               fp->TexSrcTarget = TEXTURE_2D_ARRAY_INDEX;
+               break;
          }
          Program->TexturesUsed[texcoord] |= (1 << fp->TexSrcTarget);
          /* Check that both "2D" and "CUBE" (for example) aren't both used */
@@ -3464,6 +3476,10 @@ parse_instructions(GLcontext * ctx, const GLubyte * inst,
                      /* do nothing for now */
                   }
                   break;
+
+               case MESA_TEXTURE_ARRAY:
+		  /* do nothing for now */
+                  break;
             }
             break;
 
@@ -3603,7 +3619,9 @@ enable_parser_extensions(GLcontext *ctx, grammar id)
    if (ctx->Extensions.ARB_draw_buffers
        && !enable_ext(ctx, id, "draw_buffers"))
       return GL_FALSE;
-
+   if (ctx->Extensions.MESA_texture_array
+       && !enable_ext(ctx, id, "texture_array"))
+      return GL_FALSE;
 #if 1
    /* hack for Warcraft (see bug 8060) */
    enable_ext(ctx, id, "vertex_blend");
diff --git a/src/mesa/shader/arbprogram.syn b/src/mesa/shader/arbprogram.syn
index 6ab0f269380..4f82717873e 100644
--- a/src/mesa/shader/arbprogram.syn
+++ b/src/mesa/shader/arbprogram.syn
@@ -36,7 +36,7 @@
    compares the value with its REVISION value. If they do not match, the loader is not up
    to date.
 */
-.emtcode REVISION                                   0x09
+.emtcode REVISION                                   0x0a
 
 /* program type */
 .emtcode FRAGMENT_PROGRAM                           0x01
@@ -64,6 +64,9 @@
 /* GL_ARB_draw_buffers option */
 .emtcode ARB_DRAW_BUFFERS                           0x07
 
+/* GL_MESA_texture_array option */
+.emtcode MESA_TEXTURE_ARRAY                         0x08
+
 /* GL_ARB_fragment_program instruction class */
 .emtcode OP_ALU_INST                                0x00
 .emtcode OP_TEX_INST                                0x01
@@ -223,6 +226,8 @@
 .emtcode TEXTARGET_SHADOW1D                         0x06
 .emtcode TEXTARGET_SHADOW2D                         0x07
 .emtcode TEXTARGET_SHADOWRECT                       0x08
+.emtcode TEXTARGET_1D_ARRAY                         0x09
+.emtcode TEXTARGET_2D_ARRAY                         0x0a
 
 /* face type */
 .emtcode FACE_FRONT                                 0x00
@@ -436,6 +441,9 @@
 /* GL_ARB_draw_buffers */
 .regbyte draw_buffers                               0x00
 
+/* GL_MESA_texture_array */
+.regbyte texture_array                              0x00
+
 /* option presence condition registers */
 /* they are all initially set to zero - when a particular OPTION is encountered, the appropriate */
 /* register is set to 1 to indicate that the OPTION was specified. */
@@ -456,6 +464,9 @@
 /* GL_ARB_draw_buffers */
 .regbyte ARB_draw_buffers                           0x00
 
+/* GL_MESA_texture_array */
+.regbyte MESA_texture_array                         0x00
+
 /* program target condition register */
 /* this syntax script deals with two program targets - VERTEX_PROGRAM and FRAGMENT_PROGRAM. */
 /* to distinguish between them we need a register that will store for us the current target. */
@@ -523,7 +534,9 @@ fp_optionString
     .if (fragment_program_shadow != 0x00) "ARB_fragment_program_shadow"
         .emit ARB_FRAGMENT_PROGRAM_SHADOW .load ARB_fragment_program_shadow 0x01 .or
     .if (draw_buffers != 0x00) "ARB_draw_buffers" .emit ARB_DRAW_BUFFERS
-        .load ARB_draw_buffers 0x01;
+        .load ARB_draw_buffers 0x01 .or
+    .if (texture_array != 0x00) "MESA_texture_array" .emit MESA_TEXTURE_ARRAY
+        .load MESA_texture_array 0x01;
 vp_optionString
     "ARB_position_invariant" .emit ARB_POSITION_INVARIANT .load ARB_position_invariant 0x01;
 fp_ARB_fog_exp
@@ -906,7 +919,9 @@ texTarget
     "3D" .emit TEXTARGET_3D .or
     .if (texture_rectangle != 0x00) "RECT" .emit TEXTARGET_RECT .or
     "CUBE" .emit TEXTARGET_CUBE .or
-    .if (ARB_fragment_program_shadow != 0x00) shadowTarget;
+    .if (ARB_fragment_program_shadow != 0x00) shadowTarget .or
+    .if (MESA_texture_array != 0x00) "ARRAY1D" .emit TEXTARGET_1D_ARRAY .or
+    .if (MESA_texture_array != 0x00) "ARRAY2D" .emit TEXTARGET_2D_ARRAY;
 
 /*
 GL_ARB_fragment_program_shadow
diff --git a/src/mesa/shader/arbprogram_syn.h b/src/mesa/shader/arbprogram_syn.h
index c67afc67db9..30dc9f4594e 100644
--- a/src/mesa/shader/arbprogram_syn.h
+++ b/src/mesa/shader/arbprogram_syn.h
@@ -1,5 +1,5 @@
 ".syntax program;\n"
-".emtcode REVISION 0x09\n"
+".emtcode REVISION 0x0a\n"
 ".emtcode FRAGMENT_PROGRAM 0x01\n"
 ".emtcode VERTEX_PROGRAM 0x02\n"
 ".emtcode OPTION 0x01\n"
@@ -14,6 +14,7 @@
 ".emtcode ARB_POSITION_INVARIANT 0x05\n"
 ".emtcode ARB_FRAGMENT_PROGRAM_SHADOW 0x06\n"
 ".emtcode ARB_DRAW_BUFFERS 0x07\n"
+".emtcode MESA_TEXTURE_ARRAY 0x08\n"
 ".emtcode OP_ALU_INST 0x00\n"
 ".emtcode OP_TEX_INST 0x01\n"
 ".emtcode OP_ALU_VECTOR 0x00\n"
@@ -120,6 +121,8 @@
 ".emtcode TEXTARGET_SHADOW1D 0x06\n"
 ".emtcode TEXTARGET_SHADOW2D 0x07\n"
 ".emtcode TEXTARGET_SHADOWRECT 0x08\n"
+".emtcode TEXTARGET_1D_ARRAY 0x09\n"
+".emtcode TEXTARGET_2D_ARRAY 0x0A\n"
 ".emtcode FACE_FRONT 0x00\n"
 ".emtcode FACE_BACK 0x01\n"
 ".emtcode COLOR_PRIMARY 0x00\n"
@@ -264,6 +267,7 @@
 ".regbyte texture_rectangle 0x00\n"
 ".regbyte fragment_program_shadow 0x00\n"
 ".regbyte draw_buffers 0x00\n"
+".regbyte texture_array 0x00\n"
 ".regbyte ARB_precision_hint_fastest 0x00\n"
 ".regbyte ARB_precision_hint_nicest 0x00\n"
 ".regbyte ARB_fog_exp 0x00\n"
@@ -272,6 +276,7 @@
 ".regbyte ARB_position_invariant 0x00\n"
 ".regbyte ARB_fragment_program_shadow 0x00\n"
 ".regbyte ARB_draw_buffers 0x00\n"
+".regbyte MESA_texture_array 0x00\n"
 ".regbyte program_target 0x00\n"
 "program\n"
 " programs .error UNKNOWN_PROGRAM_SIGNATURE .emit REVISION;\n"
@@ -309,7 +314,9 @@
 " .if (fragment_program_shadow != 0x00) \"ARB_fragment_program_shadow\"\n"
 " .emit ARB_FRAGMENT_PROGRAM_SHADOW .load ARB_fragment_program_shadow 0x01 .or\n"
 " .if (draw_buffers != 0x00) \"ARB_draw_buffers\" .emit ARB_DRAW_BUFFERS\n"
-" .load ARB_draw_buffers 0x01;\n"
+" .load ARB_draw_buffers 0x01 .or\n"
+" .if (texture_array != 0x00) \"MESA_texture_array\" .emit MESA_TEXTURE_ARRAY\n"
+" .load MESA_texture_array 0x01;\n"
 "vp_optionString\n"
 " \"ARB_position_invariant\" .emit ARB_POSITION_INVARIANT .load ARB_position_invariant 0x01;\n"
 "fp_ARB_fog_exp\n"
@@ -471,7 +478,9 @@
 " \"3D\" .emit TEXTARGET_3D .or\n"
 " .if (texture_rectangle != 0x00) \"RECT\" .emit TEXTARGET_RECT .or\n"
 " \"CUBE\" .emit TEXTARGET_CUBE .or\n"
-" .if (ARB_fragment_program_shadow != 0x00) shadowTarget;\n"
+" .if (ARB_fragment_program_shadow != 0x00) shadowTarget .or\n"
+" .if (MESA_texture_array != 0x00) \"ARRAY1D\" .emit TEXTARGET_1D_ARRAY .or\n"
+" .if (MESA_texture_array != 0x00) \"ARRAY2D\" .emit TEXTARGET_2D_ARRAY;\n"
 "shadowTarget\n"
 " \"SHADOW1D\" .emit TEXTARGET_SHADOW1D .or\n"
 " \"SHADOW2D\" .emit TEXTARGET_SHADOW2D .or\n"