DDX DDY support, not very accurate

[mesa.git] / src / mesa / drivers / dri / i965 / brw_wm_fp.c

diff --git a/src/mesa/drivers/dri/i965/brw_wm_fp.c b/src/mesa/drivers/dri/i965/brw_wm_fp.c
index 47ddcd0f05e2cd292ae7c274c8a313e3d59dd11f..0a6e516b93305800c2799b61484f70bf68661793 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_fp.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_fp.c
@@ -176,6 +176,7 @@ static struct prog_instruction *emit_insn(struct brw_wm_compile *c,
 {
    struct prog_instruction *inst = get_fp_inst(c);
    *inst = *inst0;
+   inst->Data = (void *)inst0;
    return inst;
 }
 
@@ -201,7 +202,6 @@ static struct prog_instruction * emit_op(struct brw_wm_compile *c,
    inst->SrcReg[0] = src0;
    inst->SrcReg[1] = src1;
    inst->SrcReg[2] = src2;
-   
    return inst;
 }
    
@@ -361,6 +361,37 @@ static void emit_interp( struct brw_wm_compile *c,
    c->fp_interp_emitted |= 1<<idx;
 }
 
+static void emit_ddx( struct brw_wm_compile *c,
+        const struct prog_instruction *inst )
+{
+    GLuint idx = inst->SrcReg[0].Index;
+    struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
+
+    c->fp_deriv_emitted |= 1<<idx;
+    emit_op(c,
+            OPCODE_DDX,
+            inst->DstReg,
+            0, 0, 0,
+            interp,
+            get_pixel_w(c),
+            src_undef());
+}
+
+static void emit_ddy( struct brw_wm_compile *c,
+        const struct prog_instruction *inst )
+{
+    GLuint idx = inst->SrcReg[0].Index;
+    struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
+
+    c->fp_deriv_emitted |= 1<<idx;
+    emit_op(c,
+            OPCODE_DDY,
+            inst->DstReg,
+            0, 0, 0,
+            interp,
+            get_pixel_w(c),
+            src_undef());
+}
 
 /***********************************************************************
  * Hacks to extend the program parameter and constant lists.
@@ -397,7 +428,7 @@ static struct prog_src_register search_or_add_param5(struct brw_wm_compile *c,
 
    /* Recalculate state dependency: 
     */
-   c->fp->param_state = brw_parameter_list_state_flags( paramList );
+   c->fp->param_state = paramList->StateFlags;
 
    return src_reg(PROGRAM_STATE_VAR, idx);
 }
@@ -907,8 +938,16 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
          */
         out->DstReg.WriteMask = 0;
         break;
-
+      case OPCODE_DDX:
+        emit_ddx(c, inst);
+        break;
+      case OPCODE_DDY:
+         emit_ddy(c, inst);
+       break;
       case OPCODE_END:
+        emit_fog(c);
+        emit_fb_write(c);
+        break;
       case OPCODE_PRINT:
         break;
         
@@ -917,15 +956,11 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
         break;
       }
    }
-   
-   emit_fog(c);
-   emit_fb_write(c);
-
 
    if (INTEL_DEBUG & DEBUG_WM) {
-      _mesa_printf("\n\n\npass_fp:\n");
-      print_insns( c->prog_instructions, c->nr_fp_insns );
-      _mesa_printf("\n");
+          _mesa_printf("\n\n\npass_fp:\n");
+          print_insns( c->prog_instructions, c->nr_fp_insns );
+          _mesa_printf("\n");
    }
 }