brw_eu.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

static INLINE struct brw_reg brw_address_reg( GLuint subnr )
{
   return brw_uw1_reg(BRW_ARCHITECTURE_REGISTER_FILE, 
		      BRW_ARF_ADDRESS, 
		      subnr);
}

/* If/else instructions break in align16 mode if writemask & swizzle
 * aren't xyzw.  This goes against the convention for other scalar
 * regs:
 */
static INLINE struct brw_reg brw_ip_reg( void )
{
   return brw_reg(BRW_ARCHITECTURE_REGISTER_FILE, 
		  BRW_ARF_IP, 
		  0,
		  BRW_REGISTER_TYPE_UD,
		  BRW_VERTICAL_STRIDE_4, /* ? */
		  BRW_WIDTH_1,
		  BRW_HORIZONTAL_STRIDE_0,
		  BRW_SWIZZLE_XYZW, /* NOTE! */
		  WRITEMASK_XYZW); /* NOTE! */
}

static INLINE struct brw_reg brw_acc_reg( void )
{
   return brw_vec8_reg(BRW_ARCHITECTURE_REGISTER_FILE, 
		       BRW_ARF_ACCUMULATOR, 
		       0);
}


static INLINE struct brw_reg brw_flag_reg( void )
{
   return brw_uw1_reg(BRW_ARCHITECTURE_REGISTER_FILE,
		      BRW_ARF_FLAG,
		      0);
}


static INLINE struct brw_reg brw_mask_reg( GLuint subnr )
{
   return brw_uw1_reg(BRW_ARCHITECTURE_REGISTER_FILE,
		      BRW_ARF_MASK,
		      subnr);
}

static INLINE struct brw_reg brw_message_reg( GLuint nr )
{
   return brw_vec8_reg(BRW_MESSAGE_REGISTER_FILE,
		       nr,
		       0);
}




/* This is almost always called with a numeric constant argument, so
 * make things easy to evaluate at compile time:
 */
static INLINE GLuint cvt( GLuint val )
{
   switch (val) {
   case 0: return 0;
   case 1: return 1;
   case 2: return 2;
   case 4: return 3;
   case 8: return 4;
   case 16: return 5;
   case 32: return 6;
   }
   return 0;
}

static INLINE struct brw_reg stride( struct brw_reg reg,
				       GLuint vstride,
				       GLuint width,
				       GLuint hstride )
{
   
   reg.vstride = cvt(vstride);
   reg.width = cvt(width) - 1;
   reg.hstride = cvt(hstride);
   return reg;
}

static INLINE struct brw_reg vec16( struct brw_reg reg )
{
   return stride(reg, 16,16,1);
}

static INLINE struct brw_reg vec8( struct brw_reg reg )
{
   return stride(reg, 8,8,1);
}

static INLINE struct brw_reg vec4( struct brw_reg reg )
{
   return stride(reg, 4,4,1);
}

static INLINE struct brw_reg vec2( struct brw_reg reg )
{
   return stride(reg, 2,2,1);
}

static INLINE struct brw_reg vec1( struct brw_reg reg )
{
   return stride(reg, 0,1,0);
}

static INLINE struct brw_reg get_element( struct brw_reg reg, GLuint elt )
{
   return vec1(suboffset(reg, elt));
}

static INLINE struct brw_reg get_element_ud( struct brw_reg reg, GLuint elt )
{
   return vec1(suboffset(retype(reg, BRW_REGISTER_TYPE_UD), elt));
}


static INLINE struct brw_reg brw_swizzle( struct brw_reg reg,
					    GLuint x,
					    GLuint y, 
					    GLuint z,
					    GLuint w)
{
   reg.dw1.bits.swizzle = BRW_SWIZZLE4(BRW_GET_SWZ(reg.dw1.bits.swizzle, x),
				       BRW_GET_SWZ(reg.dw1.bits.swizzle, y),
				       BRW_GET_SWZ(reg.dw1.bits.swizzle, z),
				       BRW_GET_SWZ(reg.dw1.bits.swizzle, w));
   return reg;
}


static INLINE struct brw_reg brw_swizzle1( struct brw_reg reg,
					     GLuint x )
{
   return brw_swizzle(reg, x, x, x, x);
}

static INLINE struct brw_reg brw_writemask( struct brw_reg reg,
					      GLuint mask )
{
   reg.dw1.bits.writemask &= mask;
   return reg;
}

static INLINE struct brw_reg brw_set_writemask( struct brw_reg reg,
						  GLuint mask )
{
   reg.dw1.bits.writemask = mask;
   return reg;
}

static INLINE struct brw_reg negate( struct brw_reg reg )
{
   reg.negate ^= 1;
   return reg;
}

static INLINE struct brw_reg brw_abs( struct brw_reg reg )
{
   reg.abs = 1;
   return reg;
}

/***********************************************************************
 */
static INLINE struct brw_reg brw_vec4_indirect( GLuint subnr,
						  GLint offset )
{
   struct brw_reg reg =  brw_vec4_grf(0, 0);
   reg.subnr = subnr;
   reg.address_mode = BRW_ADDRESS_REGISTER_INDIRECT_REGISTER;
   reg.dw1.bits.indirect_offset = offset;
   return reg;
}

static INLINE struct brw_reg brw_vec1_indirect( GLuint subnr,
						  GLint offset )
{
   struct brw_reg reg =  brw_vec1_grf(0, 0);
   reg.subnr = subnr;
   reg.address_mode = BRW_ADDRESS_REGISTER_INDIRECT_REGISTER;
   reg.dw1.bits.indirect_offset = offset;
   return reg;
}

static INLINE struct brw_reg deref_4f(struct brw_indirect ptr, GLint offset)
{
   return brw_vec4_indirect(ptr.addr_subnr, ptr.addr_offset + offset);
}

static INLINE struct brw_reg deref_1f(struct brw_indirect ptr, GLint offset)
{
   return brw_vec1_indirect(ptr.addr_subnr, ptr.addr_offset + offset);
}

static INLINE struct brw_reg deref_4b(struct brw_indirect ptr, GLint offset)
{
   return retype(deref_4f(ptr, offset), BRW_REGISTER_TYPE_B);
}

static INLINE struct brw_reg deref_1uw(struct brw_indirect ptr, GLint offset)
{
   return retype(deref_1f(ptr, offset), BRW_REGISTER_TYPE_UW);
}

static INLINE struct brw_reg deref_1d(struct brw_indirect ptr, GLint offset)
{
   return retype(deref_1f(ptr, offset), BRW_REGISTER_TYPE_D);
}

static INLINE struct brw_reg deref_1ud(struct brw_indirect ptr, GLint offset)
{
   return retype(deref_1f(ptr, offset), BRW_REGISTER_TYPE_UD);
}

static INLINE struct brw_reg get_addr_reg(struct brw_indirect ptr)
{
   return brw_address_reg(ptr.addr_subnr);
}

static INLINE struct brw_indirect brw_indirect_offset( struct brw_indirect ptr, GLint offset )
{
   ptr.addr_offset += offset;
   return ptr;
}

static INLINE struct brw_indirect brw_indirect( GLuint addr_subnr, GLint offset )
{
   struct brw_indirect ptr;
   ptr.addr_subnr = addr_subnr;
   ptr.addr_offset = offset;
   ptr.pad = 0;
   return ptr;
}

static INLINE struct brw_instruction *current_insn( struct brw_compile *p)
{
	return &p->store[p->nr_insn];
}

void brw_pop_insn_state( struct brw_compile *p );
void brw_push_insn_state( struct brw_compile *p );
void brw_set_mask_control( struct brw_compile *p, GLuint value );
void brw_set_saturate( struct brw_compile *p, GLuint value );
void brw_set_access_mode( struct brw_compile *p, GLuint access_mode );
void brw_set_compression_control( struct brw_compile *p, GLboolean control );
void brw_set_predicate_control_flag_value( struct brw_compile *p, GLuint value );
void brw_set_predicate_control( struct brw_compile *p, GLuint pc );
void brw_set_conditionalmod( struct brw_compile *p, GLuint conditional );

void brw_init_compile( struct brw_context *, struct brw_compile *p );
const GLuint *brw_get_program( struct brw_compile *p, GLuint *sz );


/* Helpers for regular instructions:
 */
#define ALU1(OP)					\
struct brw_instruction *brw_##OP(struct brw_compile *p,	\
	      struct brw_reg dest,			\
	      struct brw_reg src0);

#define ALU2(OP)					\
struct brw_instruction *brw_##OP(struct brw_compile *p,	\
	      struct brw_reg dest,			\
	      struct brw_reg src0,			\
	      struct brw_reg src1);

ALU1(MOV)
ALU2(SEL)
ALU1(NOT)
ALU2(AND)
ALU2(OR)
ALU2(XOR)
ALU2(SHR)
ALU2(SHL)
ALU2(RSR)
ALU2(RSL)
ALU2(ASR)
ALU2(JMPI)
ALU2(ADD)
ALU2(MUL)
ALU1(FRC)
ALU1(RNDD)
ALU2(MAC)
ALU2(MACH)
ALU1(LZD)
ALU2(DP4)
ALU2(DPH)
ALU2(DP3)
ALU2(DP2)
ALU2(LINE)

#undef ALU1
#undef ALU2



/* Helpers for SEND instruction:
 */
void brw_urb_WRITE(struct brw_compile *p,
		   struct brw_reg dest,
		   GLuint msg_reg_nr,
		   struct brw_reg src0,
		   GLboolean allocate,
		   GLboolean used,
		   GLuint msg_length,
		   GLuint response_length,
		   GLboolean eot,
		   GLboolean writes_complete,
		   GLuint offset,
		   GLuint swizzle);

void brw_fb_WRITE(struct brw_compile *p,
		   struct brw_reg dest,
		   GLuint msg_reg_nr,
		   struct brw_reg src0,
		   GLuint binding_table_index,
		   GLuint msg_length,
		   GLuint response_length,
		   GLboolean eot);

void brw_SAMPLE(struct brw_compile *p,
		struct brw_reg dest,
		GLuint msg_reg_nr,
		struct brw_reg src0,
		GLuint binding_table_index,
		GLuint sampler,
		GLuint writemask,
		GLuint msg_type,
		GLuint response_length,
		GLuint msg_length,
		GLboolean eot);

void brw_math_16( struct brw_compile *p,
		  struct brw_reg dest,
		  GLuint function,
		  GLuint saturate,
		  GLuint msg_reg_nr,
		  struct brw_reg src,
		  GLuint precision );

void brw_math( struct brw_compile *p,
	       struct brw_reg dest,
	       GLuint function,
	       GLuint saturate,
	       GLuint msg_reg_nr,
	       struct brw_reg src,
	       GLuint data_type,
	       GLuint precision );

void brw_dp_READ_16( struct brw_compile *p,
		     struct brw_reg dest,
		     GLuint msg_reg_nr,
		     GLuint scratch_offset );

void brw_dp_WRITE_16( struct brw_compile *p,
		      struct brw_reg src,
		      GLuint msg_reg_nr,
		      GLuint scratch_offset );

/* If/else/endif.  Works by manipulating the execution flags on each
 * channel.
 */
struct brw_instruction *brw_IF(struct brw_compile *p, 
			       GLuint execute_size);

struct brw_instruction *brw_ELSE(struct brw_compile *p, 
				 struct brw_instruction *if_insn);

void brw_ENDIF(struct brw_compile *p, 
	       struct brw_instruction *if_or_else_insn);


/* DO/WHILE loops:
 */
struct brw_instruction *brw_DO(struct brw_compile *p,
			       GLuint execute_size);

struct brw_instruction *brw_WHILE(struct brw_compile *p, 
	       struct brw_instruction *patch_insn);

struct brw_instruction *brw_BREAK(struct brw_compile *p);
struct brw_instruction *brw_CONT(struct brw_compile *p);
/* Forward jumps:
 */
void brw_land_fwd_jump(struct brw_compile *p, 
		       struct brw_instruction *jmp_insn);



void brw_NOP(struct brw_compile *p);

/* Special case: there is never a destination, execution size will be
 * taken from src0:
 */
void brw_CMP(struct brw_compile *p,
	     struct brw_reg dest,
	     GLuint conditional,
	     struct brw_reg src0,
	     struct brw_reg src1);

void brw_print_reg( struct brw_reg reg );


/*********************************************************************** 
 * brw_eu_util.c:
 */

void brw_copy_indirect_to_indirect(struct brw_compile *p,
				   struct brw_indirect dst_ptr,
				   struct brw_indirect src_ptr,
				   GLuint count);

void brw_copy_from_indirect(struct brw_compile *p,
			    struct brw_reg dst,
			    struct brw_indirect ptr,
			    GLuint count);

void brw_copy4(struct brw_compile *p,
	       struct brw_reg dst,
	       struct brw_reg src,
	       GLuint count);

void brw_copy8(struct brw_compile *p,
	       struct brw_reg dst,
	       struct brw_reg src,
	       GLuint count);

void brw_math_invert( struct brw_compile *p, 
		      struct brw_reg dst,
		      struct brw_reg src);

void brw_set_src1( struct brw_instruction *insn,
                          struct brw_reg reg );
#endif