implement full reference counting for vertex/fragment programs

[mesa.git] / src / mesa / shader / prog_instruction.h

diff --git a/src/mesa/shader/prog_instruction.h b/src/mesa/shader/prog_instruction.h
index 100aac4b97f6e4cb16a3fd84ce083570e97e0a6c..c800757aa0f6c993fa0d0e32e508e966aa5ff22a 100644 (file)
--- a/src/mesa/shader/prog_instruction.h
+++ b/src/mesa/shader/prog_instruction.h
@@ -57,6 +57,12 @@
 #define GET_SWZ(swz, idx)      (((swz) >> ((idx)*3)) & 0x7)
 #define GET_BIT(msk, idx)      (((msk) >> (idx)) & 0x1)
 
+#define SWIZZLE_XYZW MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W)
+#define SWIZZLE_XXXX MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X)
+#define SWIZZLE_YYYY MAKE_SWIZZLE4(SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y)
+#define SWIZZLE_ZZZZ MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_Z, SWIZZLE_Z, SWIZZLE_Z)
+#define SWIZZLE_WWWW MAKE_SWIZZLE4(SWIZZLE_W, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W)
+
 
 /**
  * Writemask values, 1 bit per component.
@@ -292,7 +298,7 @@ struct prog_dst_register
    /*@{*/
    /**
     * Takes one of the 9 possible condition values (EQ, FL, GT, GE, LE, LT,
-    * NE, TR, or UN).  Destination update is enabled if the matching
+    * NE, TR, or UN).  Dest reg is only written to if the matching
     * (swizzled) condition code value passes.  When a conditional update mask
     * is not specified, this will be \c COND_TR.
     */
@@ -400,8 +406,12 @@ struct prog_instruction
 
    /**
     * For BRA and CAL instructions, the location to jump to.
+    * For BGNLOOP, points to ENDLOOP (and vice-versa).
+    * For BRK, points to BGNLOOP (which points to ENDLOOP).
+    * For IF, points to else or endif.
+    * For ELSE, points to endif.
     */
-   GLuint BranchTarget;
+   GLint BranchTarget;
 
    /**
     * For TEX instructions in shaders, the sampler to use for the
@@ -423,6 +433,10 @@ extern struct prog_instruction *
 _mesa_realloc_instructions(struct prog_instruction *oldInst,
                            GLuint numOldInst, GLuint numNewInst);
 
+extern struct prog_instruction *
+_mesa_copy_instructions(struct prog_instruction *dest,
+                        const struct prog_instruction *src, GLuint n);
+
 extern GLuint
 _mesa_num_inst_src_regs(gl_inst_opcode opcode);