static void emit_lit( struct brw_compile *p,
const struct brw_reg *dst,
GLuint mask,
const struct brw_reg *arg0 )
{
assert((mask & WRITEMASK_XW) == 0);
if (mask & WRITEMASK_Y) {
brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
brw_MOV(p, dst[1], arg0[0]);
brw_set_saturate(p, 0);
}
if (mask & WRITEMASK_Z) {
emit_math2(p, BRW_MATH_FUNCTION_POW,
&dst[2],
WRITEMASK_X | (mask & SATURATE),
&arg0[1],
&arg0[3]);
}
/* Ordinarily you'd use an iff statement to skip or shortcircuit
* some of the POW calculations above, but 16-wide iff statements
* seem to lock c1 hardware, so this is a nasty workaround:
*/
brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_LE, arg0[0], brw_imm_f(0));
{
if (mask & WRITEMASK_Y)
brw_MOV(p, dst[1], brw_imm_f(0));
if (mask & WRITEMASK_Z)
brw_MOV(p, dst[2], brw_imm_f(0));
}
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
}
/* Emit the fragment program instructions here.
*/
void brw_wm_emit( struct brw_wm_compile *c )
{
struct brw_compile *p = &c->func;
struct intel_context *intel = &p->brw->intel;
GLuint insn;
brw_set_compression_control(p, BRW_COMPRESSION_COMPRESSED);
if (intel->gen >= 6)
brw_set_acc_write_control(p, 1);
/* Check if any of the payload regs need to be spilled:
*/
spill_values(c, c->payload.depth, 4);
spill_values(c, c->creg, c->nr_creg);
spill_values(c, c->payload.input_interp, FRAG_ATTRIB_MAX);
for (insn = 0; insn < c->nr_insns; insn++) {
struct brw_wm_instruction *inst = &c->instruction[insn];
struct brw_reg args[3][4], dst[4];
GLuint i, dst_flags;
/* Get argument regs:
*/
for (i = 0; i < 3; i++)
get_argument_regs(c, inst->src[i], args[i]);
/* Get dest regs:
*/
for (i = 0; i < 4; i++)
if (inst->dst[i])
dst[i] = inst->dst[i]->hw_reg;
else
dst[i] = brw_null_reg();
/* Flags
*/
dst_flags = inst->writemask;
if (inst->saturate)
dst_flags |= SATURATE;
switch (inst->opcode) {
/* Generated instructions for calculating triangle interpolants:
*/
case WM_PIXELXY:
emit_pixel_xy(c, dst, dst_flags);
break;
case WM_DELTAXY:
emit_delta_xy(p, dst, dst_flags, args[0]);
break;
case WM_WPOSXY:
emit_wpos_xy(c, dst, dst_flags, args[0]);
break;
case WM_PIXELW:
emit_pixel_w(c, dst, dst_flags, args[0], args[1]);
break;
case WM_LINTERP:
emit_linterp(p, dst, dst_flags, args[0], args[1]);
break;
case WM_PINTERP:
emit_pinterp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case WM_CINTERP:
emit_cinterp(p, dst, dst_flags, args[0]);
break;
case WM_FB_WRITE:
emit_fb_write(c, args[0], args[1], args[2], inst->target, inst->eot);
break;
case WM_FRONTFACING:
emit_frontfacing(p, dst, dst_flags);
break;
/* Straightforward arithmetic:
*/
case OPCODE_ADD:
emit_alu2(p, brw_ADD, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_FRC:
emit_alu1(p, brw_FRC, dst, dst_flags, args[0]);
break;
case OPCODE_FLR:
emit_alu1(p, brw_RNDD, dst, dst_flags, args[0]);
break;
case OPCODE_DDX:
emit_ddxy(p, dst, dst_flags, true, args[0]);
break;
case OPCODE_DDY:
emit_ddxy(p, dst, dst_flags, false, args[0]);
break;
case OPCODE_DP2:
emit_dp2(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_DP3:
emit_dp3(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_DP4:
emit_dp4(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_DPH:
emit_dph(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_TRUNC:
for (i = 0; i < 4; i++) {
if (dst_flags & (1<<i)) {
brw_RNDZ(p, dst[i], args[0][i]);
}
}
break;
case OPCODE_LRP:
emit_lrp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MAD:
emit_mad(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MOV:
case OPCODE_SWZ:
emit_alu1(p, brw_MOV, dst, dst_flags, args[0]);
break;
case OPCODE_MUL:
emit_alu2(p, brw_MUL, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_XPD:
emit_xpd(p, dst, dst_flags, args[0], args[1]);
break;
/* Higher math functions:
*/
case OPCODE_RCP:
emit_math1(c, BRW_MATH_FUNCTION_INV, dst, dst_flags, args[0]);
break;
case OPCODE_RSQ:
emit_math1(c, BRW_MATH_FUNCTION_RSQ, dst, dst_flags, args[0]);
break;
case OPCODE_SIN:
emit_math1(c, BRW_MATH_FUNCTION_SIN, dst, dst_flags, args[0]);
break;
case OPCODE_COS:
emit_math1(c, BRW_MATH_FUNCTION_COS, dst, dst_flags, args[0]);
break;
case OPCODE_EX2:
emit_math1(c, BRW_MATH_FUNCTION_EXP, dst, dst_flags, args[0]);
break;
case OPCODE_LG2:
emit_math1(c, BRW_MATH_FUNCTION_LOG, dst, dst_flags, args[0]);
break;
case OPCODE_SCS:
/* There is an scs math function, but it would need some
* fixup for 16-element execution.
*/
if (dst_flags & WRITEMASK_X)
emit_math1(c, BRW_MATH_FUNCTION_COS, dst, (dst_flags&SATURATE)|WRITEMASK_X, args[0]);
if (dst_flags & WRITEMASK_Y)
emit_math1(c, BRW_MATH_FUNCTION_SIN, dst+1, (dst_flags&SATURATE)|WRITEMASK_X, args[0]);
break;
case OPCODE_POW:
emit_math2(c, BRW_MATH_FUNCTION_POW, dst, dst_flags, args[0], args[1]);
break;
/* Comparisons:
*/
case OPCODE_CMP:
emit_cmp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MAX:
emit_max(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_MIN:
emit_min(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SLT:
emit_slt(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SLE:
emit_sle(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SGT:
emit_sgt(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SGE:
emit_sge(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SEQ:
emit_seq(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SNE:
emit_sne(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SSG:
emit_sign(p, dst, dst_flags, args[0]);
break;
case OPCODE_LIT:
emit_lit(c, dst, dst_flags, args[0]);
break;
/* Texturing operations:
*/
case OPCODE_TEX:
emit_tex(c, dst, dst_flags, args[0], c->payload.depth[0].hw_reg,
inst->tex_idx, inst->tex_unit,
inst->tex_shadow);
break;
case OPCODE_TXB:
emit_txb(c, dst, dst_flags, args[0], c->payload.depth[0].hw_reg,
inst->tex_idx, inst->tex_unit);
break;
case OPCODE_KIL:
emit_kil(c, args[0]);
break;
default:
printf("Unsupported opcode %i (%s) in fragment shader\n",
inst->opcode, inst->opcode < MAX_OPCODE ?
_mesa_opcode_string(inst->opcode) :
"unknown");
}
for (i = 0; i < 4; i++)
if (inst->dst[i] && inst->dst[i]->spill_slot)
emit_spill(c,
inst->dst[i]->hw_reg,
inst->dst[i]->spill_slot);
}
/* Only properly tested on ILK */
if (p->brw->intel.gen == 5) {
brw_remove_duplicate_mrf_moves(p);
if (c->dispatch_width == 16)
brw_remove_grf_to_mrf_moves(p);
}
if (unlikely(INTEL_DEBUG & DEBUG_WM)) {
int i;
printf("wm-native:\n");
for (i = 0; i < p->nr_insn; i++)
brw_disasm(stdout, &p->store[i], p->brw->intel.gen);
printf("\n");
}
}
/* Emit the fragment program instructions here.
*/
void brw_wm_emit( struct brw_wm_compile *c )
{
struct brw_compile *p = &c->func;
GLuint insn;
brw_set_compression_control(p, BRW_COMPRESSION_COMPRESSED);
/* Check if any of the payload regs need to be spilled:
*/
spill_values(c, c->payload.depth, 4);
spill_values(c, c->creg, c->nr_creg);
spill_values(c, c->payload.input_interp, FRAG_ATTRIB_MAX);
for (insn = 0; insn < c->nr_insns; insn++) {
struct brw_wm_instruction *inst = &c->instruction[insn];
struct brw_reg args[3][4], dst[4];
GLuint i, dst_flags;
/* Get argument regs:
*/
for (i = 0; i < 3; i++)
get_argument_regs(c, inst->src[i], args[i]);
/* Get dest regs:
*/
for (i = 0; i < 4; i++)
if (inst->dst[i])
dst[i] = inst->dst[i]->hw_reg;
else
dst[i] = brw_null_reg();
/* Flags
*/
dst_flags = inst->writemask;
if (inst->saturate)
dst_flags |= SATURATE;
switch (inst->opcode) {
/* Generated instructions for calculating triangle interpolants:
*/
case WM_PIXELXY:
emit_pixel_xy(p, dst, dst_flags, args[0]);
break;
case WM_DELTAXY:
emit_delta_xy(p, dst, dst_flags, args[0], args[1]);
break;
case WM_WPOSXY:
emit_wpos_xy(c, dst, dst_flags, args[0]);
break;
case WM_PIXELW:
emit_pixel_w(p, dst, dst_flags, args[0], args[1]);
break;
case WM_LINTERP:
emit_linterp(p, dst, dst_flags, args[0], args[1]);
break;
case WM_PINTERP:
emit_pinterp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case WM_CINTERP:
emit_cinterp(p, dst, dst_flags, args[0]);
break;
case WM_FB_WRITE:
emit_fb_write(c, args[0], args[1], args[2], inst->target, inst->eot);
break;
/* Straightforward arithmetic:
*/
case OPCODE_ADD:
emit_alu2(p, brw_ADD, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_FRC:
emit_alu1(p, brw_FRC, dst, dst_flags, args[0]);
break;
case OPCODE_FLR:
emit_alu1(p, brw_RNDD, dst, dst_flags, args[0]);
break;
case OPCODE_DP3: /* */
emit_dp3(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_DP4:
emit_dp4(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_DPH:
emit_dph(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_LRP: /* */
emit_lrp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MAD:
emit_mad(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MOV:
case OPCODE_SWZ:
emit_alu1(p, brw_MOV, dst, dst_flags, args[0]);
break;
case OPCODE_MUL:
emit_alu2(p, brw_MUL, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_XPD:
emit_xpd(p, dst, dst_flags, args[0], args[1]);
break;
/* Higher math functions:
*/
case OPCODE_RCP:
emit_math1(p, BRW_MATH_FUNCTION_INV, dst, dst_flags, args[0]);
break;
case OPCODE_RSQ:
emit_math1(p, BRW_MATH_FUNCTION_RSQ, dst, dst_flags, args[0]);
break;
case OPCODE_SIN:
emit_math1(p, BRW_MATH_FUNCTION_SIN, dst, dst_flags, args[0]);
break;
case OPCODE_COS:
emit_math1(p, BRW_MATH_FUNCTION_COS, dst, dst_flags, args[0]);
break;
case OPCODE_EX2:
emit_math1(p, BRW_MATH_FUNCTION_EXP, dst, dst_flags, args[0]);
break;
case OPCODE_LG2:
emit_math1(p, BRW_MATH_FUNCTION_LOG, dst, dst_flags, args[0]);
break;
case OPCODE_SCS:
/* There is an scs math function, but it would need some
* fixup for 16-element execution.
*/
if (dst_flags & WRITEMASK_X)
emit_math1(p, BRW_MATH_FUNCTION_COS, dst, (dst_flags&SATURATE)|WRITEMASK_X, args[0]);
if (dst_flags & WRITEMASK_Y)
emit_math1(p, BRW_MATH_FUNCTION_SIN, dst+1, (dst_flags&SATURATE)|WRITEMASK_X, args[0]);
break;
case OPCODE_POW:
emit_math2(p, BRW_MATH_FUNCTION_POW, dst, dst_flags, args[0], args[1]);
break;
/* Comparisons:
*/
case OPCODE_CMP:
emit_cmp(p, dst, dst_flags, args[0], args[1], args[2]);
break;
case OPCODE_MAX:
emit_max(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_MIN:
emit_min(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SLT:
emit_slt(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SLE:
emit_sle(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SGT:
emit_sgt(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SGE:
emit_sge(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SEQ:
emit_seq(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_SNE:
emit_sne(p, dst, dst_flags, args[0], args[1]);
break;
case OPCODE_LIT:
emit_lit(p, dst, dst_flags, args[0]);
break;
/* Texturing operations:
*/
case OPCODE_TEX:
emit_tex(c, inst, dst, dst_flags, args[0]);
break;
case OPCODE_TXB:
emit_txb(c, inst, dst, dst_flags, args[0]);
break;
case OPCODE_KIL:
emit_kil(c, args[0]);
break;
default:
_mesa_printf("unsupport opcode %d in fragment program\n",
inst->opcode);
}
for (i = 0; i < 4; i++)
if (inst->dst[i] && inst->dst[i]->spill_slot)
emit_spill(c,
inst->dst[i]->hw_reg,
inst->dst[i]->spill_slot);
}
}