#include "cell_gen_fp.h"
-/** Set to 1 to enable debug/disassembly printfs */
-#define DISASSEM 01
+#define MAX_TEMPS 16
+#define MAX_IMMED 8
+#define CHAN_X 0
+#define CHAN_Y 1
+#define CHAN_Z 2
+#define CHAN_W 3
/**
* Context needed during code generation.
int inputs_reg; /**< 1st function parameter */
int outputs_reg; /**< 2nd function parameter */
int constants_reg; /**< 3rd function parameter */
- int temp_regs[8][4]; /**< maps TGSI temps to SPE registers */
+ int temp_regs[MAX_TEMPS][4]; /**< maps TGSI temps to SPE registers */
+ int imm_regs[MAX_IMMED][4]; /**< maps TGSI immediates to SPE registers */
+
+ int num_imm; /**< number of immediates */
int one_reg; /**< register containing {1.0, 1.0, 1.0, 1.0} */
/** Per-instruction temps / intermediate temps */
int num_itemps;
- int itemps[3];
+ int itemps[10];
/** Current IF/ELSE/ENDIF nesting level */
int if_nesting;
if (gen->one_reg <= 0) {
gen->one_reg = spe_allocate_available_register(gen->f);
+ spe_indent(gen->f, 4);
+ spe_comment(gen->f, -4, "INIT CONSTANT 1.0:");
+
/* one = {1.0, 1.0, 1.0, 1.0} */
spe_load_float(gen->f, gen->one_reg, 1.0f);
-#if DISASSEM
- printf("\til\tr%d, 1.0f\n", gen->one_reg);
-#endif
+
+ spe_indent(gen->f, -4);
}
return gen->one_reg;
if (gen->exec_mask_reg <= 0) {
gen->exec_mask_reg = spe_allocate_available_register(gen->f);
+ spe_indent(gen->f, 4);
+ spe_comment(gen->f, -4, "INIT EXEC MASK = ~0:");
+
/* exec_mask = {~0, ~0, ~0, ~0} */
spe_load_int(gen->f, gen->exec_mask_reg, ~0);
-#if DISASSEM
- printf("INIT EXEC MASK:\n");
- printf("\tload\tr%d, 0x%x\n", gen->exec_mask_reg, ~0);
-#endif
+
+ spe_indent(gen->f, -4);
}
return gen->exec_mask_reg;
{
int reg = -1;
int swizzle = tgsi_util_get_full_src_register_extswizzle(src, channel);
+ boolean reg_is_itemp = FALSE;
+ uint sign_op;
- assert(swizzle >= 0);
- assert(swizzle <= 3);
-
- channel = swizzle;
+ assert(swizzle >= TGSI_SWIZZLE_X);
+ assert(swizzle <= TGSI_EXTSWIZZLE_ONE);
switch (src->SrcRegister.File) {
case TGSI_FILE_TEMPORARY:
- reg = gen->temp_regs[src->SrcRegister.Index][channel];
+ reg = gen->temp_regs[src->SrcRegister.Index][swizzle];
break;
case TGSI_FILE_INPUT:
{
- /* offset is measured in quadwords, not bytes */
- int offset = src->SrcRegister.Index * 4 + channel;
- reg = get_itemp(gen);
- /* Load: reg = memory[(machine_reg) + offset] */
- spe_lqd(gen->f, reg, gen->inputs_reg, offset);
-#if DISASSEM
- printf("\tlqd\tr%d, r%d + %d\n", reg, gen->inputs_reg, offset);
-#endif
+ if(swizzle == TGSI_EXTSWIZZLE_ONE)
+ {
+ /* Load const one float and early out */
+ reg = get_const_one_reg(gen);
+ }
+ else if(swizzle == TGSI_EXTSWIZZLE_ZERO)
+ {
+ /* Load const zero float and early out */
+ reg = get_itemp(gen);
+ spe_xor(gen->f, reg, reg, reg);
+ }
+ else
+ {
+ /* offset is measured in quadwords, not bytes */
+ int offset = src->SrcRegister.Index * 4 + swizzle;
+ reg = get_itemp(gen);
+ reg_is_itemp = TRUE;
+ /* Load: reg = memory[(machine_reg) + offset] */
+ spe_lqd(gen->f, reg, gen->inputs_reg, offset);
+ }
}
break;
case TGSI_FILE_IMMEDIATE:
- /* xxx fall-through for now / fix */
+ reg = gen->imm_regs[src->SrcRegister.Index][swizzle];
+ break;
case TGSI_FILE_CONSTANT:
/* xxx fall-through for now / fix */
default:
assert(0);
}
+ /*
+ * Handle absolute value, negate or set-negative of src register.
+ */
+ sign_op = tgsi_util_get_full_src_register_sign_mode(src, channel);
+ if (sign_op != TGSI_UTIL_SIGN_KEEP) {
+ /*
+ * All sign ops are done by manipulating bit 31, the IEEE float sign bit.
+ */
+ const int bit31mask_reg = get_itemp(gen);
+ int result_reg;
+
+ if (reg_is_itemp) {
+ /* re-use 'reg' for the result */
+ result_reg = reg;
+ }
+ else {
+ /* alloc a new reg for the result */
+ result_reg = get_itemp(gen);
+ }
+
+ /* mask with bit 31 set, the rest cleared */
+ spe_load_int(gen->f, bit31mask_reg, (1 << 31));
+
+ if (sign_op == TGSI_UTIL_SIGN_CLEAR) {
+ spe_andc(gen->f, result_reg, reg, bit31mask_reg);
+ }
+ else if (sign_op == TGSI_UTIL_SIGN_SET) {
+ spe_and(gen->f, result_reg, reg, bit31mask_reg);
+ }
+ else {
+ assert(sign_op == TGSI_UTIL_SIGN_TOGGLE);
+ spe_xor(gen->f, result_reg, reg, bit31mask_reg);
+ }
+
+ reg = result_reg;
+ }
+
return reg;
}
* d[i] = mask_reg[i] ? value_reg : d_reg
*/
spe_selb(gen->f, d_reg, d_reg, value_reg, exec_reg);
-#if DISASSEM
- printf("\tselb\tr%d, r%d, r%d, r%d # EXEC MASK'ed\n",
- d_reg, d_reg, value_reg, exec_reg);
-#endif
}
else {
/* we're not inside a condition or loop: do nothing special */
spe_selb(gen->f, curval_reg, curval_reg, value_reg, exec_reg);
/* Store: memory[(machine_reg) + offset] = curval */
spe_stqd(gen->f, curval_reg, gen->outputs_reg, offset);
-#if DISASSEM
- printf("\tlqd\tr%d, r%d + %d\n",
- curval_reg, gen->outputs_reg, offset);
- printf("\tselb\tr%d, r%d, r%d, r%d # EXEC MASK'ed\n",
- curval_reg, curval_reg, value_reg, exec_reg);
- printf("\tstqd\tr%d, r%d + %d\n",
- curval_reg, gen->outputs_reg, offset);
-#endif
}
else {
/* Store: memory[(machine_reg) + offset] = reg */
spe_stqd(gen->f, value_reg, gen->outputs_reg, offset);
-#if DISASSEM
- printf("\tstqd\tr%d, r%d + %d\n",
- value_reg, gen->outputs_reg, offset);
-#endif
}
}
break;
emit_MOV(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
int ch;
-#if DISASSEM
- printf("MOV:\n");
-#endif
+ spe_comment(gen->f, -4, "MOV:");
for (ch = 0; ch < 4; ch++) {
if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
int src_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
int dst_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
/* XXX we don't always need to actually emit a mov instruction here */
spe_move(gen->f, dst_reg, src_reg);
-#if DISASSEM
- printf("\tmov\tr%d, r%d\n", dst_reg, src_reg);
-#endif
store_dest_reg(gen, dst_reg, ch, &inst->FullDstRegisters[0]);
free_itemps(gen);
}
return true;
}
-
-
/**
* Emit addition instructions. Recall that a single TGSI_OPCODE_ADD
* becomes (up to) four SPU "fa" instructions because we're doing SOA
emit_ADD(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
int ch;
-#if DISASSEM
- printf("ADD:\n");
-#endif
+ spe_comment(gen->f, -4, "ADD:");
/* Loop over Red/Green/Blue/Alpha channels */
for (ch = 0; ch < 4; ch++) {
/* If the dest R, G, B or A writemask is enabled... */
/* Emit actual SPE instruction: d = s1 + s2 */
spe_fa(gen->f, d_reg, s1_reg, s2_reg);
-#if DISASSEM
- printf("\tfa\tr%d, r%d, r%d\n", d_reg, s1_reg, s2_reg);
-#endif
/* Store the result (a no-op for TGSI_FILE_TEMPORARY dests) */
store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
return true;
}
-
/**
- * Emit multiply. See emit_ADD for comments.
+ * Emit subtract. See emit_ADD for comments.
*/
static boolean
-emit_MUL(struct codegen *gen, const struct tgsi_full_instruction *inst)
+emit_SUB(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
int ch;
-#if DISASSEM
- printf("MUL:\n");
-#endif
+ spe_comment(gen->f, -4, "SUB:");
+ /* Loop over Red/Green/Blue/Alpha channels */
for (ch = 0; ch < 4; ch++) {
+ /* If the dest R, G, B or A writemask is enabled... */
if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ /* get indexes of the two src, one dest SPE registers */
int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
- /* d = s1 * s2 */
- spe_fm(gen->f, d_reg, s1_reg, s2_reg);
-#if DISASSEM
- printf("\tfm\tr%d, r%d, r%d\n", d_reg, s1_reg, s2_reg);
-#endif
+
+ /* Emit actual SPE instruction: d = s1 - s2 */
+ spe_fs(gen->f, d_reg, s1_reg, s2_reg);
+
+ /* Store the result (a no-op for TGSI_FILE_TEMPORARY dests) */
store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ /* Free any intermediate temps we allocated */
free_itemps(gen);
}
}
return true;
}
-
/**
- * Emit set-if-greater-than.
- * Note that the SPE fcgt instruction produces 0x0 and 0xffffffff as
- * the result but OpenGL/TGSI needs 0.0 and 1.0 results.
- * We can easily convert 0x0/0xffffffff to 0.0/1.0 with a bitwise AND.
+ * Emit multiply add. See emit_ADD for comments.
*/
static boolean
-emit_SGT(struct codegen *gen, const struct tgsi_full_instruction *inst)
+emit_MAD(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
int ch;
-
-#if DISASSEM
- printf("SGT:\n");
-#endif
+ spe_comment(gen->f, -4, "MAD:");
for (ch = 0; ch < 4; ch++) {
if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int s3_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
-
- /* d = (s1 > s2) */
- spe_fcgt(gen->f, d_reg, s1_reg, s2_reg);
-#if DISASSEM
- printf("\tfcgt\tr%d, r%d, r%d\n", d_reg, s1_reg, s2_reg);
-#endif
-
- /* convert d from 0x0/0xffffffff to 0.0/1.0 */
- /* d = d & one_reg */
- spe_and(gen->f, d_reg, d_reg, get_const_one_reg(gen));
-#if DISASSEM
- printf("\tand\tr%d, r%d, r%d\n", d_reg, d_reg, get_const_one_reg(gen));
-#endif
-
+ /* d = s1 * s2 + s3 */
+ spe_fma(gen->f, d_reg, s1_reg, s2_reg, s3_reg);
store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
free_itemps(gen);
}
}
-
return true;
}
+/**
+ * Emit linear interpolate. See emit_ADD for comments.
+ */
static boolean
-emit_IF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+emit_LERP(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- const int channel = 0;
- const int exec_reg = get_exec_mask_reg(gen);
-
- /* update execution mask with the predicate register */
- int tmp_reg = spe_allocate_available_register(gen->f);
- int s1_reg = get_src_reg(gen, channel, &inst->FullSrcRegisters[0]);
-
- /* tmp = (s1_reg == 0) */
- spe_ceqi(gen->f, tmp_reg, s1_reg, 0);
- /* tmp = !tmp */
- spe_complement(gen->f, tmp_reg);
- /* exec_mask = exec_mask & tmp */
- spe_and(gen->f, exec_reg, exec_reg, tmp_reg);
-#if DISASSEM
- printf("IF:\n");
- printf("\tseqi\tr%d, r%d, 0;\n", tmp_reg, s1_reg);
- printf("\tcomp\tr%d\n", tmp_reg);
- printf("\tand\tr%d, r%d, r%d\n", exec_reg, exec_reg, tmp_reg);
-#endif
-
- gen->if_nesting++;
-
- spe_release_register(gen->f, tmp_reg);
-
+ int ch;
+ spe_comment(gen->f, -4, "LERP:");
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int s3_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ /* d = s3 + s1(s2 - s3) */
+ spe_fs(gen->f, d_reg, s2_reg, s3_reg);
+ spe_fma(gen->f, d_reg, d_reg, s1_reg, s3_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
return true;
}
-
+/**
+ * Emit multiply. See emit_ADD for comments.
+ */
static boolean
-emit_ELSE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+emit_MUL(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- const int exec_reg = get_exec_mask_reg(gen);
-
- /* exec_mask = !exec_mask */
- spe_complement(gen->f, exec_reg);
-#if DISASSEM
- printf("ELSE:\n");
- printf("\tcomp\tr%d;\n", exec_reg);
-#endif
+ int ch;
+ spe_comment(gen->f, -4, "MUL:");
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ /* d = s1 * s2 */
+ spe_fm(gen->f, d_reg, s1_reg, s2_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
return true;
}
-
+/**
+ * Emit reciprocal. See emit_ADD for comments.
+ */
static boolean
-emit_ENDIF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+emit_RCP(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- const int exec_reg = get_exec_mask_reg(gen);
-
- /* XXX todo: pop execution mask */
-
- spe_load_int(gen->f, exec_reg, ~0x0);
-#if DISASSEM
- printf("ENDIF:\n");
- printf("\tli\tr%d, ~0x0\n", exec_reg);
-#endif
-
- gen->if_nesting--;
+ int ch;
+ spe_comment(gen->f, -4, "RCP:");
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ /* d = 1/s1 */
+ spe_frest(gen->f, d_reg, s1_reg);
+ spe_fi(gen->f, d_reg, s1_reg, d_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
return true;
}
-
-
/**
- * Emit END instruction.
- * We just return from the shader function at this point.
- *
- * Note that there may be more code after this that would be
- * called by TGSI_OPCODE_CALL.
+ * Emit reciprocal sqrt. See emit_ADD for comments.
*/
static boolean
-emit_END(struct codegen *gen)
+emit_RSQ(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- /* return from function call */
- spe_bi(gen->f, SPE_REG_RA, 0, 0);
-#if DISASSEM
- printf("\tbi\trRA\n");
-#endif
+ int ch;
+ spe_comment(gen->f, -4, "RSQ:");
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ /* d = 1/s1 */
+ spe_frsqest(gen->f, d_reg, s1_reg);
+ spe_fi(gen->f, d_reg, s1_reg, d_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
return true;
}
-
/**
- * Emit code for the given instruction. Just a big switch stmt.
+ * Emit absolute value. See emit_ADD for comments.
*/
static boolean
-emit_instruction(struct codegen *gen,
- const struct tgsi_full_instruction *inst)
+emit_ABS(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- switch (inst->Instruction.Opcode) {
- case TGSI_OPCODE_MOV:
- return emit_MOV(gen, inst);
- case TGSI_OPCODE_MUL:
- return emit_MUL(gen, inst);
- case TGSI_OPCODE_ADD:
- return emit_ADD(gen, inst);
- case TGSI_OPCODE_SGT:
- return emit_SGT(gen, inst);
- case TGSI_OPCODE_END:
- return emit_END(gen);
+ int ch;
+ spe_comment(gen->f, -4, "ABS:");
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ const int bit31mask_reg = get_itemp(gen);
- case TGSI_OPCODE_IF:
- return emit_IF(gen, inst);
- case TGSI_OPCODE_ELSE:
- return emit_ELSE(gen, inst);
- case TGSI_OPCODE_ENDIF:
- return emit_ENDIF(gen, inst);
+ /* mask with bit 31 set, the rest cleared */
+ spe_load_int(gen->f, bit31mask_reg, (1 << 31));
- /* XXX lots more cases to do... */
+ /* d = sign bit cleared in s1 */
+ spe_andc(gen->f, d_reg, s1_reg, bit31mask_reg);
- default:
- return false;
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
}
-
return true;
}
-
-
/**
- * Emit "code" for a TGSI declaration.
- * We only care about TGSI TEMPORARY register declarations at this time.
- * For each TGSI TEMPORARY we allocate four SPE registers.
+ * Emit 3 component dot product. See emit_ADD for comments.
*/
-static void
-emit_declaration(struct codegen *gen, const struct tgsi_full_declaration *decl)
+static boolean
+emit_DP3(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- int i, ch;
+ int ch;
+ spe_comment(gen->f, -4, "DP3:");
- switch (decl->Declaration.File) {
- case TGSI_FILE_TEMPORARY:
-#if DISASSEM
- printf("Declare temp reg %d .. %d\n",
- decl->DeclarationRange.First,
- decl->DeclarationRange.Last);
-#endif
- for (i = decl->DeclarationRange.First;
- i <= decl->DeclarationRange.Last;
- i++) {
- for (ch = 0; ch < 4; ch++) {
- gen->temp_regs[i][ch] = spe_allocate_available_register(gen->f);
- }
+ int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ int tmp_reg = get_itemp(gen);
+ /* t = x0 * x1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
- /* XXX if we run out of SPE registers, we need to spill
- * to SPU memory. someday...
- */
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = y0 * y1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
-#if DISASSEM
- printf(" SPE regs: %d %d %d %d\n",
- gen->temp_regs[i][0],
- gen->temp_regs[i][1],
- gen->temp_regs[i][2],
- gen->temp_regs[i][3]);
-#endif
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = z0 * z1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]);
}
- break;
- default:
- ; /* ignore */
}
-}
+ free_itemps(gen);
+ return true;
+}
/**
- * Translate TGSI shader code to SPE instructions. This is done when
- * the state tracker gives us a new shader (via pipe->create_fs_state()).
- *
- * \param cell the rendering context (in)
- * \param tokens the TGSI shader (in)
- * \param f the generated function (out)
+ * Emit 4 component dot product. See emit_ADD for comments.
*/
-boolean
-cell_gen_fragment_program(struct cell_context *cell,
- const struct tgsi_token *tokens,
- struct spe_function *f)
+static boolean
+emit_DP4(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
- struct tgsi_parse_context parse;
- struct codegen gen;
+ int ch;
+ spe_comment(gen->f, -4, "DP4:");
- memset(&gen, 0, sizeof(gen));
- gen.f = f;
+ int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ int tmp_reg = get_itemp(gen);
+ /* t = x0 * x1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
- /* For SPE function calls: reg $3 = first param, $4 = second param, etc. */
- gen.inputs_reg = 3; /* pointer to inputs array */
- gen.outputs_reg = 4; /* pointer to outputs array */
- gen.constants_reg = 5; /* pointer to constants array */
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = y0 * y1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
- spe_init_func(f, SPU_MAX_FRAGMENT_PROGRAM_INSTS * SPE_INST_SIZE);
- spe_allocate_register(f, gen.inputs_reg);
- spe_allocate_register(f, gen.outputs_reg);
- spe_allocate_register(f, gen.constants_reg);
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = z0 * z1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
-#if DISASSEM
- printf("Begin %s\n", __FUNCTION__);
- tgsi_dump(tokens, 0);
-#endif
+ s1_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[1]);
+ /* t = w0 * w1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
- tgsi_parse_init(&parse, tokens);
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]);
+ }
+ }
- while (!tgsi_parse_end_of_tokens(&parse) && !gen.error) {
- tgsi_parse_token(&parse);
+ free_itemps(gen);
+ return true;
+}
- switch (parse.FullToken.Token.Type) {
- case TGSI_TOKEN_TYPE_IMMEDIATE:
-#if 0
- if (!note_immediate(&gen, &parse.FullToken.FullImmediate ))
- goto fail;
-#endif
- break;
+/**
+ * Emit homogeneous dot product. See emit_ADD for comments.
+ */
+static boolean
+emit_DPH(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+ spe_comment(gen->f, -4, "DPH:");
- case TGSI_TOKEN_TYPE_DECLARATION:
- emit_declaration(&gen, &parse.FullToken.FullDeclaration);
- break;
+ int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ int tmp_reg = get_itemp(gen);
- case TGSI_TOKEN_TYPE_INSTRUCTION:
- if (!emit_instruction(&gen, &parse.FullToken.FullInstruction )) {
- gen.error = true;
- }
- break;
+ /* t = x0 * x1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
- default:
- assert(0);
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = y0 * y1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
- }
- }
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = z0 * z1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ s2_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[1]);
+ /* t = w1 + t */
+ spe_fa(gen->f, tmp_reg, s2_reg, tmp_reg);
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]);
+ }
+ }
+
+ free_itemps(gen);
+ return true;
+}
+
+/**
+ * Emit cross product. See emit_ADD for comments.
+ */
+static boolean
+emit_XPD(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ spe_comment(gen->f, -4, "XPD:");
+
+ int s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ int tmp_reg = get_itemp(gen);
+
+ /* t = z0 * y1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = y0 * z1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_X)) {
+ store_dest_reg(gen, tmp_reg, CHAN_X, &inst->FullDstRegisters[0]);
+ }
+
+ s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = x0 * z1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ /* t = z0 * x1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_Y)) {
+ store_dest_reg(gen, tmp_reg, CHAN_Y, &inst->FullDstRegisters[0]);
+ }
+
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ /* t = y0 * x1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = x0 * y1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_Z)) {
+ store_dest_reg(gen, tmp_reg, CHAN_Z, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return true;
+}
+
+/**
+ * Emit set-if-greater-than.
+ * Note that the SPE fcgt instruction produces 0x0 and 0xffffffff as
+ * the result but OpenGL/TGSI needs 0.0 and 1.0 results.
+ * We can easily convert 0x0/0xffffffff to 0.0/1.0 with a bitwise AND.
+ */
+static boolean
+emit_SGT(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SGT:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 > s2) */
+ spe_fcgt(gen->f, d_reg, s1_reg, s2_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = d & one_reg */
+ spe_and(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit set-if_less-then. See emit_SGT for comments.
+ */
+static boolean
+emit_SLT(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SLT:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 < s2) */
+ spe_fcgt(gen->f, d_reg, s2_reg, s1_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = d & one_reg */
+ spe_and(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit set-if_greater-then-or-equal. See emit_SGT for comments.
+ */
+static boolean
+emit_SGE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SGE:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 >= s2) */
+ spe_fcgt(gen->f, d_reg, s2_reg, s1_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = ~d & one_reg */
+ spe_andc(gen->f, d_reg, get_const_one_reg(gen), d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit set-if_less-then-or-equal. See emit_SGT for comments.
+ */
+static boolean
+emit_SLE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SLE:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 <= s2) */
+ spe_fcgt(gen->f, d_reg, s1_reg, s2_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = ~d & one_reg */
+ spe_andc(gen->f, d_reg, get_const_one_reg(gen), d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit set-if_equal. See emit_SGT for comments.
+ */
+static boolean
+emit_SEQ(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SEQ:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 == s2) */
+ spe_fceq(gen->f, d_reg, s1_reg, s2_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = d & one_reg */
+ spe_and(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit set-if_not_equal. See emit_SGT for comments.
+ */
+static boolean
+emit_SNE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "SNE:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 != s2) */
+ spe_fceq(gen->f, d_reg, s1_reg, s2_reg);
+ spe_nor(gen->f, d_reg, d_reg, d_reg);
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ /* d = d & one_reg */
+ spe_and(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit compare. See emit_SGT for comments.
+ */
+static boolean
+emit_CMP(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "CMP:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int s3_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ int zero_reg = get_itemp(gen);
+
+ spe_xor(gen->f, zero_reg, zero_reg, zero_reg);
+
+ /* d = (s1 < 0) ? s2 : s3 */
+ spe_fcgt(gen->f, d_reg, zero_reg, s1_reg);
+ spe_selb(gen->f, d_reg, s3_reg, s2_reg, d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit trunc.
+ * Convert float to signed int
+ * Convert signed int to float
+ */
+static boolean
+emit_TRUNC(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "TRUNC:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* Convert float to int */
+ spe_cflts(gen->f, d_reg, s1_reg, 0);
+
+ /* Convert int to float */
+ spe_csflt(gen->f, d_reg, d_reg, 0);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit floor.
+ * If negative int subtract one
+ * Convert float to signed int
+ * Convert signed int to float
+ */
+static boolean
+emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "FLR:");
+
+ int zero_reg = get_itemp(gen);
+ spe_xor(gen->f, zero_reg, zero_reg, zero_reg);
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ int tmp_reg = get_itemp(gen);
+
+ /* If negative, subtract 1.0 */
+ spe_fcgt(gen->f, d_reg, zero_reg, s1_reg);
+ spe_selb(gen->f, tmp_reg, zero_reg, get_const_one_reg(gen), d_reg);
+ spe_fs(gen->f, d_reg, s1_reg, tmp_reg);
+
+ /* Convert float to int */
+ spe_cflts(gen->f, d_reg, d_reg, 0);
+
+ /* Convert int to float */
+ spe_csflt(gen->f, d_reg, d_reg, 0);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit frac.
+ * Input - FLR(Input)
+ */
+static boolean
+emit_FRC(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "FLR:");
+
+ int zero_reg = get_itemp(gen);
+ spe_xor(gen->f, zero_reg, zero_reg, zero_reg);
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ int tmp_reg = get_itemp(gen);
+
+ /* If negative, subtract 1.0 */
+ spe_fcgt(gen->f, d_reg, zero_reg, s1_reg);
+ spe_selb(gen->f, tmp_reg, zero_reg, get_const_one_reg(gen), d_reg);
+ spe_fs(gen->f, d_reg, s1_reg, tmp_reg);
+
+ /* Convert float to int */
+ spe_cflts(gen->f, d_reg, d_reg, 0);
+
+ /* Convert int to float */
+ spe_csflt(gen->f, d_reg, d_reg, 0);
+
+ /* d = s1 - FLR(s1) */
+ spe_fs(gen->f, d_reg, s1_reg, d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+
+/**
+ * Emit max. See emit_SGT for comments.
+ */
+static boolean
+emit_MAX(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "MAX:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s1 > s2) ? s1 : s2 */
+ spe_fcgt(gen->f, d_reg, s1_reg, s2_reg);
+ spe_selb(gen->f, d_reg, s2_reg, s1_reg, d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Emit max. See emit_SGT for comments.
+ */
+static boolean
+emit_MIN(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, "MIN:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ /* d = (s2 > s1) ? s1 : s2 */
+ spe_fcgt(gen->f, d_reg, s2_reg, s1_reg);
+ spe_selb(gen->f, d_reg, s2_reg, s1_reg, d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+static boolean
+emit_IF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int channel = 0;
+ const int exec_reg = get_exec_mask_reg(gen);
+
+ spe_comment(gen->f, -4, "IF:");
+
+ /* update execution mask with the predicate register */
+ int tmp_reg = get_itemp(gen);
+ int s1_reg = get_src_reg(gen, channel, &inst->FullSrcRegisters[0]);
+
+ /* tmp = (s1_reg == 0) */
+ spe_ceqi(gen->f, tmp_reg, s1_reg, 0);
+ /* tmp = !tmp */
+ spe_complement(gen->f, tmp_reg, tmp_reg);
+ /* exec_mask = exec_mask & tmp */
+ spe_and(gen->f, exec_reg, exec_reg, tmp_reg);
+
+ gen->if_nesting++;
+
+ free_itemps(gen);
+
+ return true;
+}
+
+
+static boolean
+emit_ELSE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int exec_reg = get_exec_mask_reg(gen);
+
+ spe_comment(gen->f, -4, "ELSE:");
+
+ /* exec_mask = !exec_mask */
+ spe_complement(gen->f, exec_reg, exec_reg);
+
+ return true;
+}
+
+
+static boolean
+emit_ENDIF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int exec_reg = get_exec_mask_reg(gen);
+
+ spe_comment(gen->f, -4, "ENDIF:");
+
+ /* XXX todo: pop execution mask */
+
+ spe_load_int(gen->f, exec_reg, ~0x0);
+
+ gen->if_nesting--;
+ return true;
+}
+
+
+static boolean
+emit_DDX_DDY(struct codegen *gen, const struct tgsi_full_instruction *inst,
+ boolean ddx)
+{
+ int ch;
+
+ spe_comment(gen->f, -4, ddx ? "DDX:" : "DDY:");
+
+ for (ch = 0; ch < 4; ch++) {
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+ int s_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ int t1_reg = get_itemp(gen);
+ int t2_reg = get_itemp(gen);
+
+ spe_splat_word(gen->f, t1_reg, s_reg, 0); /* upper-left pixel */
+ if (ddx) {
+ spe_splat_word(gen->f, t2_reg, s_reg, 1); /* upper-right pixel */
+ }
+ else {
+ spe_splat_word(gen->f, t2_reg, s_reg, 2); /* lower-left pixel */
+ }
+ spe_fs(gen->f, d_reg, t2_reg, t1_reg);
+
+ free_itemps(gen);
+ }
+ }
+
+ return true;
+}
+
+
+
+
+/**
+ * Emit END instruction.
+ * We just return from the shader function at this point.
+ *
+ * Note that there may be more code after this that would be
+ * called by TGSI_OPCODE_CALL.
+ */
+static boolean
+emit_END(struct codegen *gen)
+{
+ spe_comment(gen->f, -4, "END:");
+ /* return from function call */
+ spe_bi(gen->f, SPE_REG_RA, 0, 0);
+ return true;
+}
+
+
+/**
+ * Emit code for the given instruction. Just a big switch stmt.
+ */
+static boolean
+emit_instruction(struct codegen *gen,
+ const struct tgsi_full_instruction *inst)
+{
+ switch (inst->Instruction.Opcode) {
+ case TGSI_OPCODE_MOV:
+ case TGSI_OPCODE_SWZ:
+ return emit_MOV(gen, inst);
+ case TGSI_OPCODE_MUL:
+ return emit_MUL(gen, inst);
+ case TGSI_OPCODE_ADD:
+ return emit_ADD(gen, inst);
+ case TGSI_OPCODE_SUB:
+ return emit_SUB(gen, inst);
+ case TGSI_OPCODE_MAD:
+ return emit_MAD(gen, inst);
+ case TGSI_OPCODE_LERP:
+ return emit_LERP(gen, inst);
+ case TGSI_OPCODE_DP3:
+ return emit_DP3(gen, inst);
+ case TGSI_OPCODE_DP4:
+ return emit_DP4(gen, inst);
+ case TGSI_OPCODE_DPH:
+ return emit_DPH(gen, inst);
+ case TGSI_OPCODE_XPD:
+ return emit_XPD(gen, inst);
+ case TGSI_OPCODE_RCP:
+ return emit_RCP(gen, inst);
+ case TGSI_OPCODE_RSQ:
+ return emit_RSQ(gen, inst);
+ case TGSI_OPCODE_ABS:
+ return emit_ABS(gen, inst);
+ case TGSI_OPCODE_SGT:
+ return emit_SGT(gen, inst);
+ case TGSI_OPCODE_SLT:
+ return emit_SLT(gen, inst);
+ case TGSI_OPCODE_SGE:
+ return emit_SGE(gen, inst);
+ case TGSI_OPCODE_SLE:
+ return emit_SLE(gen, inst);
+ case TGSI_OPCODE_SEQ:
+ return emit_SEQ(gen, inst);
+ case TGSI_OPCODE_SNE:
+ return emit_SNE(gen, inst);
+ case TGSI_OPCODE_CMP:
+ return emit_CMP(gen, inst);
+ case TGSI_OPCODE_MAX:
+ return emit_MAX(gen, inst);
+ case TGSI_OPCODE_MIN:
+ return emit_MIN(gen, inst);
+ case TGSI_OPCODE_TRUNC:
+ return emit_TRUNC(gen, inst);
+ case TGSI_OPCODE_FLR:
+ return emit_FLR(gen, inst);
+ case TGSI_OPCODE_FRC:
+ return emit_FRC(gen, inst);
+ case TGSI_OPCODE_END:
+ return emit_END(gen);
+
+ case TGSI_OPCODE_IF:
+ return emit_IF(gen, inst);
+ case TGSI_OPCODE_ELSE:
+ return emit_ELSE(gen, inst);
+ case TGSI_OPCODE_ENDIF:
+ return emit_ENDIF(gen, inst);
+
+ case TGSI_OPCODE_DDX:
+ return emit_DDX_DDY(gen, inst, true);
+ case TGSI_OPCODE_DDY:
+ return emit_DDX_DDY(gen, inst, false);
+
+ /* XXX lots more cases to do... */
+
+ default:
+ fprintf(stderr, "Cell: unimplemented TGSI instruction %d!\n",
+ inst->Instruction.Opcode);
+ return false;
+ }
+
+ return true;
+}
+
+
+
+/**
+ * Emit code for a TGSI immediate value (vector of four floats).
+ * This involves register allocation and initialization.
+ * XXX the initialization should be done by a "prepare" stage, not
+ * per quad execution!
+ */
+static boolean
+emit_immediate(struct codegen *gen, const struct tgsi_full_immediate *immed)
+{
+ int ch;
+
+ assert(gen->num_imm < MAX_TEMPS);
+
+ spe_comment(gen->f, -4, "IMMEDIATE:");
+
+ for (ch = 0; ch < 4; ch++) {
+ float val = immed->u.ImmediateFloat32[ch].Float;
+ int reg = spe_allocate_available_register(gen->f);
+
+ if (reg < 0)
+ return false;
+
+ /* update immediate map */
+ gen->imm_regs[gen->num_imm][ch] = reg;
+
+ /* emit initializer instruction */
+ spe_load_float(gen->f, reg, val);
+ }
+
+ gen->num_imm++;
+
+ return true;
+}
+
+
+
+/**
+ * Emit "code" for a TGSI declaration.
+ * We only care about TGSI TEMPORARY register declarations at this time.
+ * For each TGSI TEMPORARY we allocate four SPE registers.
+ */
+static boolean
+emit_declaration(struct cell_context *cell,
+ struct codegen *gen, const struct tgsi_full_declaration *decl)
+{
+ int i, ch;
+
+ switch (decl->Declaration.File) {
+ case TGSI_FILE_TEMPORARY:
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ printf("Declare temp reg %d .. %d\n",
+ decl->DeclarationRange.First,
+ decl->DeclarationRange.Last);
+ }
+
+ for (i = decl->DeclarationRange.First;
+ i <= decl->DeclarationRange.Last;
+ i++) {
+ assert(i < MAX_TEMPS);
+ for (ch = 0; ch < 4; ch++) {
+ gen->temp_regs[i][ch] = spe_allocate_available_register(gen->f);
+ if (gen->temp_regs[i][ch] < 0)
+ return false; /* out of regs */
+ }
+
+ /* XXX if we run out of SPE registers, we need to spill
+ * to SPU memory. someday...
+ */
+
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ printf(" SPE regs: %d %d %d %d\n",
+ gen->temp_regs[i][0],
+ gen->temp_regs[i][1],
+ gen->temp_regs[i][2],
+ gen->temp_regs[i][3]);
+ }
+ }
+ break;
+ default:
+ ; /* ignore */
+ }
+
+ return true;
+}
+
+
+/**
+ * Translate TGSI shader code to SPE instructions. This is done when
+ * the state tracker gives us a new shader (via pipe->create_fs_state()).
+ *
+ * \param cell the rendering context (in)
+ * \param tokens the TGSI shader (in)
+ * \param f the generated function (out)
+ */
+boolean
+cell_gen_fragment_program(struct cell_context *cell,
+ const struct tgsi_token *tokens,
+ struct spe_function *f)
+{
+ struct tgsi_parse_context parse;
+ struct codegen gen;
+
+ memset(&gen, 0, sizeof(gen));
+ gen.f = f;
+
+ /* For SPE function calls: reg $3 = first param, $4 = second param, etc. */
+ gen.inputs_reg = 3; /* pointer to inputs array */
+ gen.outputs_reg = 4; /* pointer to outputs array */
+ gen.constants_reg = 5; /* pointer to constants array */
+
+ spe_init_func(f, SPU_MAX_FRAGMENT_PROGRAM_INSTS * SPE_INST_SIZE);
+ spe_allocate_register(f, gen.inputs_reg);
+ spe_allocate_register(f, gen.outputs_reg);
+ spe_allocate_register(f, gen.constants_reg);
+
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ spe_print_code(f, true);
+ spe_indent(f, 8);
+ printf("Begin %s\n", __FUNCTION__);
+ tgsi_dump(tokens, 0);
+ }
+
+ tgsi_parse_init(&parse, tokens);
+
+ while (!tgsi_parse_end_of_tokens(&parse) && !gen.error) {
+ tgsi_parse_token(&parse);
+
+ switch (parse.FullToken.Token.Type) {
+ case TGSI_TOKEN_TYPE_IMMEDIATE:
+ if (!emit_immediate(&gen, &parse.FullToken.FullImmediate))
+ gen.error = true;
+ break;
+
+ case TGSI_TOKEN_TYPE_DECLARATION:
+ if (!emit_declaration(cell, &gen, &parse.FullToken.FullDeclaration))
+ gen.error = true;
+ break;
+
+ case TGSI_TOKEN_TYPE_INSTRUCTION:
+ if (!emit_instruction(&gen, &parse.FullToken.FullInstruction))
+ gen.error = true;
+ break;
+
+ default:
+ assert(0);
+ }
+ }
if (gen.error) {
return emit_END(&gen);
}
-#if DISASSEM
- printf("cell_gen_fragment_program nr instructions: %d\n", f->num_inst);
- printf("End %s\n", __FUNCTION__);
-#endif
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ printf("cell_gen_fragment_program nr instructions: %d\n", f->num_inst);
+ printf("End %s\n", __FUNCTION__);
+ }
tgsi_parse_free( &parse );
projects / mesa.git / blobdiff