r500_fragprog.c

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

static void nqssadce_build_swizzle(struct nqssadce_state *s,
	struct prog_dst_register dst, struct prog_src_register src)
{
	struct prog_instruction *inst;
	GLuint negatebase[2] = { 0, 0 };
	int i;

	for(i = 0; i < 4; ++i) {
		GLuint swz = GET_SWZ(src.Swizzle, i);
		if (swz == SWIZZLE_NIL)
			continue;
		negatebase[GET_BIT(src.NegateBase, i)] |= 1 << i;
	}

	_mesa_insert_instructions(s->Program, s->IP, (negatebase[0] ? 1 : 0) + (negatebase[1] ? 1 : 0));
	inst = s->Program->Instructions + s->IP;

	for(i = 0; i <= 1; ++i) {
		if (!negatebase[i])
			continue;

		inst->Opcode = OPCODE_MOV;
		inst->DstReg = dst;
		inst->DstReg.WriteMask = negatebase[i];
		inst->SrcReg[0] = src;
		inst++;
		s->IP++;
	}
}

static GLuint build_dtm(GLuint depthmode)
{
	switch(depthmode) {
	default:
	case GL_LUMINANCE: return 0;
	case GL_INTENSITY: return 1;
	case GL_ALPHA: return 2;
	}
}

static GLuint build_func(GLuint comparefunc)
{
	return comparefunc - GL_NEVER;
}


/**
 * Collect all external state that is relevant for compiling the given
 * fragment program.
 */
static void build_state(
	r300ContextPtr r300,
	struct r500_fragment_program *fp,
	struct r500_fragment_program_external_state *state)
{
	int unit;

	_mesa_bzero(state, sizeof(*state));

	for(unit = 0; unit < 16; ++unit) {
		if (fp->mesa_program.Base.ShadowSamplers & (1 << unit)) {
			struct gl_texture_object* tex = r300->radeon.glCtx->Texture.Unit[unit]._Current;

			state->unit[unit].depth_texture_mode = build_dtm(tex->DepthMode);
			state->unit[unit].texture_compare_func = build_func(tex->CompareFunc);
		}
	}
}

static void dump_program(struct r500_fragment_program_code *code);

void r500TranslateFragmentShader(r300ContextPtr r300,
				 struct r500_fragment_program *fp)
{
	struct r500_fragment_program_external_state state;

	build_state(r300, fp, &state);
	if (_mesa_memcmp(&fp->state, &state, sizeof(state))) {
		/* TODO: cache compiled programs */
		fp->translated = GL_FALSE;
		_mesa_memcpy(&fp->state, &state, sizeof(state));
	}

	if (!fp->translated) {
		struct r500_fragment_program_compiler compiler;

		compiler.r300 = r300;
		compiler.fp = fp;
		compiler.code = &fp->code;
		compiler.program = _mesa_clone_program(r300->radeon.glCtx, &fp->mesa_program.Base);

		if (RADEON_DEBUG & DEBUG_PIXEL) {
			_mesa_printf("Compiler: Initial program:\n");
			_mesa_print_program(compiler.program);
		}

		insert_WPOS_trailer(&compiler);

		struct radeon_program_transformation transformations[] = {
			{ &transform_TEX, &compiler },
			{ &radeonTransformALU, 0 },
			{ &radeonTransformDeriv, 0 },
			{ &radeonTransformTrigScale, 0 }
		};
		radeonLocalTransform(r300->radeon.glCtx, compiler.program,
			4, transformations);

		if (RADEON_DEBUG & DEBUG_PIXEL) {
			_mesa_printf("Compiler: after native rewrite:\n");
			_mesa_print_program(compiler.program);
		}

		struct radeon_nqssadce_descr nqssadce = {
			.Init = &nqssadce_init,
			.IsNativeSwizzle = &is_native_swizzle,
			.BuildSwizzle = &nqssadce_build_swizzle,
			.RewriteDepthOut = GL_TRUE
		};
		radeonNqssaDce(r300->radeon.glCtx, compiler.program, &nqssadce);

		if (RADEON_DEBUG & DEBUG_PIXEL) {
			_mesa_printf("Compiler: after NqSSA-DCE:\n");
			_mesa_print_program(compiler.program);
		}

		fp->translated = r500FragmentProgramEmit(&compiler);

		/* Subtle: Rescue any parameters that have been added during transformations */
		_mesa_free_parameter_list(fp->mesa_program.Base.Parameters);
		fp->mesa_program.Base.Parameters = compiler.program->Parameters;
		compiler.program->Parameters = 0;

		_mesa_reference_program(r300->radeon.glCtx, &compiler.program, 0);

		r300UpdateStateParameters(r300->radeon.glCtx, _NEW_PROGRAM);

		if (RADEON_DEBUG & DEBUG_PIXEL) {
			if (fp->translated) {
				_mesa_printf("Machine-readable code:\n");
				dump_program(&fp->code);
			}
		}

	}

	update_params(r300, fp);

}

static char *toswiz(int swiz_val) {
  switch(swiz_val) {
  case 0: return "R";
  case 1: return "G";
  case 2: return "B";
  case 3: return "A";
  case 4: return "0";
  case 5: return "1/2";
  case 6: return "1";
  case 7: return "U";
  }
  return NULL;
}

static char *toop(int op_val)
{
  char *str = NULL;
  switch (op_val) {
  case 0: str = "MAD"; break;
  case 1: str = "DP3"; break;
  case 2: str = "DP4"; break;
  case 3: str = "D2A"; break;
  case 4: str = "MIN"; break;
  case 5: str = "MAX"; break;
  case 6: str = "Reserved"; break;
  case 7: str = "CND"; break;
  case 8: str = "CMP"; break;
  case 9: str = "FRC"; break;
  case 10: str = "SOP"; break;
  case 11: str = "MDH"; break;
  case 12: str = "MDV"; break;
  }
  return str;
}

static char *to_alpha_op(int op_val)
{
  char *str = NULL;
  switch (op_val) {
  case 0: str = "MAD"; break;
  case 1: str = "DP"; break;
  case 2: str = "MIN"; break;
  case 3: str = "MAX"; break;
  case 4: str = "Reserved"; break;
  case 5: str = "CND"; break;
  case 6: str = "CMP"; break;
  case 7: str = "FRC"; break;
  case 8: str = "EX2"; break;
  case 9: str = "LN2"; break;
  case 10: str = "RCP"; break;
  case 11: str = "RSQ"; break;
  case 12: str = "SIN"; break;
  case 13: str = "COS"; break;
  case 14: str = "MDH"; break;
  case 15: str = "MDV"; break;
  }
  return str;
}

static char *to_mask(int val)
{
  char *str = NULL;
  switch(val) {
  case 0: str = "NONE"; break;
  case 1: str = "R"; break;
  case 2: str = "G"; break;
  case 3: str = "RG"; break;
  case 4: str = "B"; break;
  case 5: str = "RB"; break;
  case 6: str = "GB"; break;
  case 7: str = "RGB"; break;
  case 8: str = "A"; break;
  case 9: str = "AR"; break;
  case 10: str = "AG"; break;
  case 11: str = "ARG"; break;
  case 12: str = "AB"; break;
  case 13: str = "ARB"; break;
  case 14: str = "AGB"; break;
  case 15: str = "ARGB"; break;
  }
  return str;
}

static char *to_texop(int val)
{
  switch(val) {
  case 0: return "NOP";
  case 1: return "LD";
  case 2: return "TEXKILL";
  case 3: return "PROJ";
  case 4: return "LODBIAS";
  case 5: return "LOD";
  case 6: return "DXDY";
  }
  return NULL;
}

static void dump_program(struct r500_fragment_program_code *code)
{

  fprintf(stderr, "R500 Fragment Program:\n--------\n");

  int n;
  uint32_t inst;
  uint32_t inst0;
  char *str = NULL;

  if (code->const_nr) {
    fprintf(stderr, "--------\nConstants:\n");
    for (n = 0; n < code->const_nr; n++) {
      fprintf(stderr, "Constant %d: %i[%i]\n", n,
        code->constant[n].File, code->constant[n].Index);
    }
    fprintf(stderr, "--------\n");
  }

  for (n = 0; n < code->inst_end+1; n++) {
    inst0 = inst = code->inst[n].inst0;
    fprintf(stderr,"%d\t0:CMN_INST   0x%08x:", n, inst);
    switch(inst & 0x3) {
    case R500_INST_TYPE_ALU: str = "ALU"; break;
    case R500_INST_TYPE_OUT: str = "OUT"; break;
    case R500_INST_TYPE_FC: str = "FC"; break;
    case R500_INST_TYPE_TEX: str = "TEX"; break;
    };
    fprintf(stderr,"%s %s %s %s %s ", str,
	    inst & R500_INST_TEX_SEM_WAIT ? "TEX_WAIT" : "",
	    inst & R500_INST_LAST ? "LAST" : "",
	    inst & R500_INST_NOP ? "NOP" : "",
	    inst & R500_INST_ALU_WAIT ? "ALU WAIT" : "");
    fprintf(stderr,"wmask: %s omask: %s\n", to_mask((inst >> 11) & 0xf),
	    to_mask((inst >> 15) & 0xf));

    switch(inst0 & 0x3) {
    case 0:
    case 1:
      fprintf(stderr,"\t1:RGB_ADDR   0x%08x:", code->inst[n].inst1);
      inst = code->inst[n].inst1;

      fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
	      inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
	      (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
	      (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
	      (inst >> 30));

      fprintf(stderr,"\t2:ALPHA_ADDR 0x%08x:", code->inst[n].inst2);
      inst = code->inst[n].inst2;
      fprintf(stderr,"Addr0: %d%c, Addr1: %d%c, Addr2: %d%c, srcp:%d\n",
	      inst & 0xff, (inst & (1<<8)) ? 'c' : 't',
	      (inst >> 10) & 0xff, (inst & (1<<18)) ? 'c' : 't',
	      (inst >> 20) & 0xff, (inst & (1<<28)) ? 'c' : 't',
	      (inst >> 30));
      fprintf(stderr,"\t3 RGB_INST:  0x%08x:", code->inst[n].inst3);
      inst = code->inst[n].inst3;
      fprintf(stderr,"rgb_A_src:%d %s/%s/%s %d rgb_B_src:%d %s/%s/%s %d\n",
	      (inst) & 0x3, toswiz((inst >> 2) & 0x7), toswiz((inst >> 5) & 0x7), toswiz((inst >> 8) & 0x7),
	      (inst >> 11) & 0x3,
	      (inst >> 13) & 0x3, toswiz((inst >> 15) & 0x7), toswiz((inst >> 18) & 0x7), toswiz((inst >> 21) & 0x7),
	      (inst >> 24) & 0x3);


      fprintf(stderr,"\t4 ALPHA_INST:0x%08x:", code->inst[n].inst4);
      inst = code->inst[n].inst4;
      fprintf(stderr,"%s dest:%d%s alp_A_src:%d %s %d alp_B_src:%d %s %d w:%d\n", to_alpha_op(inst & 0xf),
	      (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
	      (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), (inst >> 17) & 0x3,
	      (inst >> 19) & 0x3, toswiz((inst >> 21) & 0x7), (inst >> 24) & 0x3,
	      (inst >> 31) & 0x1);

      fprintf(stderr,"\t5 RGBA_INST: 0x%08x:", code->inst[n].inst5);
      inst = code->inst[n].inst5;
      fprintf(stderr,"%s dest:%d%s rgb_C_src:%d %s/%s/%s %d alp_C_src:%d %s %d\n", toop(inst & 0xf),
	      (inst >> 4) & 0x7f, inst & (1<<11) ? "(rel)":"",
	      (inst >> 12) & 0x3, toswiz((inst >> 14) & 0x7), toswiz((inst >> 17) & 0x7), toswiz((inst >> 20) & 0x7),
	      (inst >> 23) & 0x3,
	      (inst >> 25) & 0x3, toswiz((inst >> 27) & 0x7), (inst >> 30) & 0x3);
      break;
    case 2:
      break;
    case 3:
      inst = code->inst[n].inst1;
      fprintf(stderr,"\t1:TEX_INST:  0x%08x: id: %d op:%s, %s, %s %s\n", inst, (inst >> 16) & 0xf,
	      to_texop((inst >> 22) & 0x7), (inst & (1<<25)) ? "ACQ" : "",
	      (inst & (1<<26)) ? "IGNUNC" : "", (inst & (1<<27)) ? "UNSCALED" : "SCALED");
      inst = code->inst[n].inst2;
      fprintf(stderr,"\t2:TEX_ADDR:  0x%08x: src: %d%s %s/%s/%s/%s dst: %d%s %s/%s/%s/%s\n", inst,
	      inst & 127, inst & (1<<7) ? "(rel)" : "",
	      toswiz((inst >> 8) & 0x3), toswiz((inst >> 10) & 0x3),
	      toswiz((inst >> 12) & 0x3), toswiz((inst >> 14) & 0x3),
	      (inst >> 16) & 127, inst & (1<<23) ? "(rel)" : "",
	      toswiz((inst >> 24) & 0x3), toswiz((inst >> 26) & 0x3),
	      toswiz((inst >> 28) & 0x3), toswiz((inst >> 30) & 0x3));

      fprintf(stderr,"\t3:TEX_DXDY:  0x%08x\n", code->inst[n].inst3);
      break;
    }
    fprintf(stderr,"\n");
  }

}