Initial 965 GLSL support

1 files changed, 138 insertions, 46 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 6eb11b19ad2..613ee03b2ae 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -134,6 +134,17 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c )
 					     WRITEMASK_X);
       reg++;
    }
+
+   c->ret =  brw_reg(BRW_GENERAL_REGISTER_FILE,
+           reg,
+           0,
+           BRW_REGISTER_TYPE_D,
+           BRW_VERTICAL_STRIDE_8,
+           BRW_WIDTH_8,
+           BRW_HORIZONTAL_STRIDE_1,
+           BRW_SWIZZLE_XXXX,
+           WRITEMASK_X);
+   reg++;
  
    
    /* Some opcodes need an internal temporary:
@@ -213,57 +224,68 @@ static void unalias2( struct brw_vs_compile *c,
    }
 }
 
+static void emit_sop( struct brw_compile *p,
+                      struct brw_reg dst,
+                      struct brw_reg arg0,
+                      struct brw_reg arg1, 
+		      GLuint cond)
+{
+   brw_push_insn_state(p);
+   brw_CMP(p, brw_null_reg(), cond, arg0, arg1);
+   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+   brw_MOV(p, dst, brw_imm_f(1.0f));
+   brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
+   brw_MOV(p, dst, brw_imm_f(0.0f));
+   brw_pop_insn_state(p);
+}
 
+static void emit_seq( struct brw_compile *p,
+                      struct brw_reg dst,
+                      struct brw_reg arg0,
+                      struct brw_reg arg1 )
+{
+   emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_EQ);
+}
 
-
+static void emit_sne( struct brw_compile *p,
+                      struct brw_reg dst,
+                      struct brw_reg arg0,
+                      struct brw_reg arg1 )
+{
+   emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_NEQ);
+}
 static void emit_slt( struct brw_compile *p, 
 		      struct brw_reg dst,
 		      struct brw_reg arg0,
 		      struct brw_reg arg1 )
 {
-   /* Could be done with an if/else/endif, but this method uses half
-    * the instructions.  Note that we are careful to reference the
-    * arguments before writing the dest.  That means we emit the
-    * instructions in an odd order and have to play with the flag
-    * values.
-    */
-   brw_push_insn_state(p);
-   brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0, arg1);
-
-   /* Write all values to 1:
-    */
-   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-   brw_MOV(p, dst, brw_imm_f(1.0));
+   emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_L);
+}
 
-   /* Where the test succeeded, overwite with zero:
-    */
-   brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
-   brw_MOV(p, dst, brw_imm_f(0.0));
-   brw_pop_insn_state(p);
+static void emit_sle( struct brw_compile *p, 
+		      struct brw_reg dst,
+		      struct brw_reg arg0,
+		      struct brw_reg arg1 )
+{
+   emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_LE);
 }
 
+static void emit_sgt( struct brw_compile *p, 
+		      struct brw_reg dst,
+		      struct brw_reg arg0,
+		      struct brw_reg arg1 )
+{
+   emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_G);
+}
 
 static void emit_sge( struct brw_compile *p, 
 		      struct brw_reg dst,
 		      struct brw_reg arg0,
 		      struct brw_reg arg1 )
 {
-   brw_push_insn_state(p);
-   brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0, arg1);
-
-   /* Write all values to zero:
-    */
-   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-   brw_MOV(p, dst, brw_imm_f(0));
-
-   /* Where the test succeeded, overwite with 1:
-    */
-   brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
-   brw_MOV(p, dst, brw_imm_f(1.0));
-   brw_pop_insn_state(p);
+  emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_GE);
 }
 
-
 static void emit_max( struct brw_compile *p, 
 		      struct brw_reg dst,
 		      struct brw_reg arg0,
@@ -592,9 +614,13 @@ static struct brw_reg get_reg( struct brw_vs_compile *c,
    case PROGRAM_TEMPORARY:
    case PROGRAM_INPUT:
    case PROGRAM_OUTPUT:
-   case PROGRAM_STATE_VAR:
       assert(c->regs[file][index].nr != 0);
       return c->regs[file][index];
+   case PROGRAM_STATE_VAR:
+   case PROGRAM_CONSTANT:
+   case PROGRAM_UNIFORM:
+      assert(c->regs[PROGRAM_STATE_VAR][index].nr != 0);
+      return c->regs[PROGRAM_STATE_VAR][index];
    case PROGRAM_ADDRESS:
       assert(index == 0);
       return c->regs[file][index];
@@ -891,17 +917,46 @@ static void emit_vertex_write( struct brw_vs_compile *c)
 
 }
 
-
-
+static void 
+post_vs_emit( struct brw_vs_compile *c, struct brw_instruction *end_inst )
+{
+   GLuint nr_insns = c->vp->program.Base.NumInstructions;
+   GLuint insn, target_insn;
+   struct prog_instruction *inst1, *inst2;
+   struct brw_instruction *brw_inst1, *brw_inst2;
+   int offset;
+   for (insn = 0; insn < nr_insns; insn++) {
+       inst1 = &c->vp->program.Base.Instructions[insn];
+       brw_inst1 = inst1->Data;
+       switch (inst1->Opcode) {
+	   case OPCODE_CAL:
+	   case OPCODE_BRA:
+	       target_insn = inst1->BranchTarget;
+	       inst2 = &c->vp->program.Base.Instructions[target_insn];
+	       brw_inst2 = inst2->Data;
+	       offset = brw_inst2 - brw_inst1;
+	       brw_set_src1(brw_inst1, brw_imm_d(offset*16));
+	       break;
+	   case OPCODE_END:
+	       offset = end_inst - brw_inst1;
+	       brw_set_src1(brw_inst1, brw_imm_d(offset*16));
+	       break;
+	   default:
+	       break;
+       }
+   }
+}
 
 /* Emit the fragment program instructions here.
  */
-void brw_vs_emit( struct brw_vs_compile *c )
+void brw_vs_emit(struct brw_vs_compile *c )
 {
+#define MAX_IFSN 32
    struct brw_compile *p = &c->func;
    GLuint nr_insns = c->vp->program.Base.NumInstructions;
-   GLuint insn;
-
+   GLuint insn, if_insn = 0;
+   struct brw_instruction *end_inst;
+   struct brw_instruction *if_inst[32];
 
    if (INTEL_DEBUG & DEBUG_VS) {
       _mesa_printf("\n\n\nvs-emit:\n");
@@ -924,6 +979,7 @@ void brw_vs_emit( struct brw_vs_compile *c )
       
       /* Get argument regs.  SWZ is special and does this itself.
        */
+      inst->Data = &p->store[p->nr_insn];
       if (inst->Opcode != OPCODE_SWZ)
 	 for (i = 0; i < 3; i++) 
 	    args[i] = get_arg(c, inst->SrcReg[i]);
@@ -934,7 +990,6 @@ void brw_vs_emit( struct brw_vs_compile *c )
        */
       dst = get_dst(c, inst->DstReg);
 
-      
       switch (inst->Opcode) {
       case OPCODE_ABS:
 	 brw_MOV(p, dst, brw_abs(args[0]));
@@ -1003,12 +1058,25 @@ void brw_vs_emit( struct brw_vs_compile *c )
       case OPCODE_RSQ:
 	 emit_math1(c, BRW_MATH_FUNCTION_RSQ, dst, args[0], BRW_MATH_PRECISION_FULL);
 	 break;
+
+      case OPCODE_SEQ:
+         emit_seq(p, dst, args[0], args[1]);
+         break;
+      case OPCODE_SNE:
+         emit_sne(p, dst, args[0], args[1]);
+         break;
       case OPCODE_SGE:
 	 emit_sge(p, dst, args[0], args[1]);
 	 break;
+      case OPCODE_SGT:
+         emit_sgt(p, dst, args[0], args[1]);
+        break;
       case OPCODE_SLT:
 	 emit_slt(p, dst, args[0], args[1]);
 	 break;
+      case OPCODE_SLE:
+         emit_sle(p, dst, args[0], args[1]);
+         break;
       case OPCODE_SUB:
 	 brw_ADD(p, dst, args[0], negate(args[1]));
 	 break;
@@ -1021,21 +1089,45 @@ void brw_vs_emit( struct brw_vs_compile *c )
       case OPCODE_XPD:
 	 emit_xpd(p, dst, args[0], args[1]);
 	 break;
+      case OPCODE_IF:
+	 assert(if_insn < MAX_IFSN);
+         if_inst[if_insn++] = brw_IF(p, BRW_EXECUTE_8);
+	 break;
+      case OPCODE_ELSE:
+	 brw_ELSE(p, if_inst[if_insn]);
+	 break;
+      case OPCODE_ENDIF:
+         assert(if_insn > 0);
+	 brw_ENDIF(p, if_inst[--if_insn]);
+	 break;			
+      case OPCODE_BRA:
+         brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
+         brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));
+         brw_set_predicate_control_flag_value(p, 0xFF);
+        break;
+      case OPCODE_CAL:
+         brw_ADD(p, c->ret, brw_ip_reg(), brw_imm_d(2*16));
+	 inst->Data = &p->store[p->nr_insn];
+	 brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));
+        break;
+      case OPCODE_RET:
+         brw_MOV(p, brw_ip_reg(), c->ret);
       case OPCODE_END:	
+         brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));
+        break;
       case OPCODE_PRINT:
+      case OPCODE_BGNSUB:
+      case OPCODE_ENDSUB:
 	 break;
       default:
+	 _mesa_printf("Unsupport opcode %d in vertex shader\n", inst->Opcode);
 	 break;
       }
 
       release_tmps(c);
    }
 
+   end_inst = &p->store[p->nr_insn];
    emit_vertex_write(c);
-
+   post_vs_emit(c, end_inst);
 }
-
-
-
-
-