#include "common/v3d_device_info.h"
#include "v3d_compiler.h"
-/* We don't do any address packing. */
-#define __gen_user_data void
-#define __gen_address_type uint32_t
-#define __gen_address_offset(reloc) (*reloc)
-#define __gen_emit_reloc(cl, reloc)
-#include "cle/v3d_packet_v33_pack.h"
-
-static struct qreg
-ntq_get_src(struct v3d_compile *c, nir_src src, int i);
static void
ntq_emit_cf_list(struct v3d_compile *c, struct exec_list *list);
(*regs)[i] = c->undef;
}
-static struct qreg
-vir_SFU(struct v3d_compile *c, int waddr, struct qreg src)
+void
+vir_emit_thrsw(struct v3d_compile *c)
{
- vir_FMOV_dest(c, vir_reg(QFILE_MAGIC, waddr), src);
- return vir_FMOV(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_R4));
-}
+ if (c->threads == 1)
+ return;
-static struct qreg
-vir_LDTMU(struct v3d_compile *c)
-{
- vir_NOP(c)->qpu.sig.ldtmu = true;
- return vir_MOV(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_R4));
+ /* Always thread switch after each texture operation for now.
+ *
+ * We could do better by batching a bunch of texture fetches up and
+ * then doing one thread switch and collecting all their results
+ * afterward.
+ */
+ c->last_thrsw = vir_NOP(c);
+ c->last_thrsw->qpu.sig.thrsw = true;
+ c->last_thrsw_at_top_level = (c->execute.file == QFILE_NULL);
}
static struct qreg
vir_uniform(c, QUNIFORM_UBO_ADDR, 0),
indirect_offset);
+ vir_emit_thrsw(c);
return vir_LDTMU(c);
}
* (knowing that the previous instruction doesn't depend on flags) and rewrite
* its destination to be the NIR reg's destination
*/
-static void
+void
ntq_store_dest(struct v3d_compile *c, nir_dest *dest, int chan,
struct qreg result)
{
if (c->execute.file != QFILE_NULL) {
last_inst->dst.index = qregs[chan].index;
- /* Set the flags to the current exec mask. To insert
- * the flags push, we temporarily remove our SSA
- * instruction.
+ /* Set the flags to the current exec mask.
*/
- list_del(&last_inst->link);
+ c->cursor = vir_before_inst(last_inst);
vir_PF(c, c->execute, V3D_QPU_PF_PUSHZ);
- list_addtail(&last_inst->link,
- &c->cur_block->instructions);
+ c->cursor = vir_after_inst(last_inst);
vir_set_cond(last_inst, V3D_QPU_COND_IFA);
last_inst->cond_is_exec_mask = true;
}
}
-static struct qreg
+struct qreg
ntq_get_src(struct v3d_compile *c, nir_src src, int i)
{
struct hash_entry *entry;
ntq_get_alu_src(struct v3d_compile *c, nir_alu_instr *instr,
unsigned src)
{
- assert(util_is_power_of_two(instr->dest.write_mask));
+ assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
unsigned chan = ffs(instr->dest.write_mask) - 1;
struct qreg r = ntq_get_src(c, instr->src[src].src,
instr->src[src].swizzle[chan]);
return r;
};
-static inline struct qreg
-vir_SAT(struct v3d_compile *c, struct qreg val)
-{
- return vir_FMAX(c,
- vir_FMIN(c, val, vir_uniform_f(c, 1.0)),
- vir_uniform_f(c, 0.0));
-}
-
-static struct qreg
-ntq_umul(struct v3d_compile *c, struct qreg src0, struct qreg src1)
-{
- vir_MULTOP(c, src0, src1);
- return vir_UMUL24(c, src0, src1);
-}
-
static struct qreg
ntq_minify(struct v3d_compile *c, struct qreg size, struct qreg level)
{
switch (instr->sampler_dim) {
case GLSL_SAMPLER_DIM_1D:
case GLSL_SAMPLER_DIM_2D:
+ case GLSL_SAMPLER_DIM_MS:
case GLSL_SAMPLER_DIM_3D:
case GLSL_SAMPLER_DIM_CUBE:
/* Don't minify the array size. */
break;
}
- struct V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1 p0_unpacked = {
- V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_header,
-
- .fetch_sample_mode = instr->op == nir_texop_txf,
- };
-
- struct V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1 p1_unpacked = {
- };
-
- switch (instr->sampler_dim) {
- case GLSL_SAMPLER_DIM_1D:
- if (instr->is_array)
- p0_unpacked.lookup_type = TEXTURE_1D_ARRAY;
- else
- p0_unpacked.lookup_type = TEXTURE_1D;
- break;
- case GLSL_SAMPLER_DIM_2D:
- case GLSL_SAMPLER_DIM_RECT:
- if (instr->is_array)
- p0_unpacked.lookup_type = TEXTURE_2D_ARRAY;
- else
- p0_unpacked.lookup_type = TEXTURE_2D;
- break;
- case GLSL_SAMPLER_DIM_3D:
- p0_unpacked.lookup_type = TEXTURE_3D;
- break;
- case GLSL_SAMPLER_DIM_CUBE:
- p0_unpacked.lookup_type = TEXTURE_CUBE_MAP;
- break;
- default:
- unreachable("Bad sampler type");
- }
-
- struct qreg coords[5];
- int next_coord = 0;
- for (unsigned i = 0; i < instr->num_srcs; i++) {
- switch (instr->src[i].src_type) {
- case nir_tex_src_coord:
- for (int j = 0; j < instr->coord_components; j++) {
- coords[next_coord++] =
- ntq_get_src(c, instr->src[i].src, j);
- }
- if (instr->coord_components < 2)
- coords[next_coord++] = vir_uniform_f(c, 0.5);
- break;
- case nir_tex_src_bias:
- coords[next_coord++] =
- ntq_get_src(c, instr->src[i].src, 0);
-
- p0_unpacked.bias_supplied = true;
- break;
- case nir_tex_src_lod:
- coords[next_coord++] =
- vir_FADD(c,
- ntq_get_src(c, instr->src[i].src, 0),
- vir_uniform(c, QUNIFORM_TEXTURE_FIRST_LEVEL,
- unit));
-
- if (instr->op != nir_texop_txf &&
- instr->op != nir_texop_tg4) {
- p0_unpacked.disable_autolod_use_bias_only = true;
- }
- break;
- case nir_tex_src_comparator:
- coords[next_coord++] =
- ntq_get_src(c, instr->src[i].src, 0);
-
- p0_unpacked.shadow = true;
- break;
-
- case nir_tex_src_offset: {
- nir_const_value *offset =
- nir_src_as_const_value(instr->src[i].src);
- p0_unpacked.texel_offset_for_s_coordinate =
- offset->i32[0];
-
- if (instr->coord_components >= 2)
- p0_unpacked.texel_offset_for_t_coordinate =
- offset->i32[1];
-
- if (instr->coord_components >= 3)
- p0_unpacked.texel_offset_for_r_coordinate =
- offset->i32[2];
- break;
- }
-
- default:
- unreachable("unknown texture source");
- }
- }
-
- bool return_16 = (c->key->tex[unit].return_size == 16 ||
- p0_unpacked.shadow);
-
- /* Limit the number of channels returned to both how many the NIR
- * instruction writes and how many the instruction could produce.
- */
- uint32_t instr_return_channels = nir_tex_instr_dest_size(instr);
- if (return_16)
- instr_return_channels = (instr_return_channels + 1) / 2;
-
- p1_unpacked.return_words_of_texture_data =
- (1 << MIN2(instr_return_channels,
- c->key->tex[unit].return_channels)) - 1;
-
- uint32_t p0_packed;
- V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_pack(NULL,
- (uint8_t *)&p0_packed,
- &p0_unpacked);
-
- uint32_t p1_packed;
- V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1_pack(NULL,
- (uint8_t *)&p1_packed,
- &p1_unpacked);
- /* Load unit number into the address field, which will be be used by
- * the driver to decide which texture to put in the actual address
- * field.
- */
- p1_packed |= unit << 5;
-
- /* There is no native support for GL texture rectangle coordinates, so
- * we have to rescale from ([0, width], [0, height]) to ([0, 1], [0,
- * 1]).
- */
- if (instr->sampler_dim == GLSL_SAMPLER_DIM_RECT) {
- coords[0] = vir_FMUL(c, coords[0],
- vir_uniform(c, QUNIFORM_TEXRECT_SCALE_X,
- unit));
- coords[1] = vir_FMUL(c, coords[1],
- vir_uniform(c, QUNIFORM_TEXRECT_SCALE_Y,
- unit));
- }
-
- struct qreg texture_u[] = {
- vir_uniform(c, QUNIFORM_TEXTURE_CONFIG_P0_0 + unit, p0_packed),
- vir_uniform(c, QUNIFORM_TEXTURE_CONFIG_P1, p1_packed),
- };
- uint32_t next_texture_u = 0;
-
- for (int i = 0; i < next_coord; i++) {
- struct qreg dst;
-
- if (i == next_coord - 1)
- dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUL);
- else
- dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMU);
-
- struct qinst *tmu = vir_MOV_dest(c, dst, coords[i]);
-
- if (i < 2) {
- tmu->has_implicit_uniform = true;
- tmu->src[vir_get_implicit_uniform_src(tmu)] =
- texture_u[next_texture_u++];
- }
- }
-
- struct qreg return_values[4];
- for (int i = 0; i < 4; i++) {
- /* Swizzling .zw of an RG texture should give undefined
- * results, not crash the compiler.
- */
- if (p1_unpacked.return_words_of_texture_data & (1 << i))
- return_values[i] = vir_LDTMU(c);
- else
- return_values[i] = c->undef;
- }
-
- for (int i = 0; i < nir_tex_instr_dest_size(instr); i++) {
- struct qreg chan;
-
- if (return_16) {
- STATIC_ASSERT(PIPE_SWIZZLE_X == 0);
- chan = return_values[i / 2];
-
- if (nir_alu_type_get_base_type(instr->dest_type) ==
- nir_type_float) {
- enum v3d_qpu_input_unpack unpack;
- if (i & 1)
- unpack = V3D_QPU_UNPACK_H;
- else
- unpack = V3D_QPU_UNPACK_L;
-
- chan = vir_FMOV(c, chan);
- vir_set_unpack(c->defs[chan.index], 0, unpack);
- } else {
- /* If we're unpacking the low field, shift it
- * up to the top first.
- */
- if ((i & 1) == 0) {
- chan = vir_SHL(c, chan,
- vir_uniform_ui(c, 16));
- }
-
- /* Do proper sign extension to a 32-bit int. */
- if (nir_alu_type_get_base_type(instr->dest_type) ==
- nir_type_int) {
- chan = vir_ASR(c, chan,
- vir_uniform_ui(c, 16));
- } else {
- chan = vir_SHR(c, chan,
- vir_uniform_ui(c, 16));
- }
- }
- } else {
- chan = vir_MOV(c, return_values[i]);
- }
- ntq_store_dest(c, &instr->dest, i, chan);
- }
+ if (c->devinfo->ver >= 40)
+ v3d40_vir_emit_tex(c, instr);
+ else
+ v3d33_vir_emit_tex(c, instr);
}
static struct qreg
input = vir_FADD(c, input, vir_uniform_f(c, 0.5));
struct qreg periods = vir_FROUND(c, input);
- struct qreg sin_output = vir_SFU(c, V3D_QPU_WADDR_SIN,
- vir_FSUB(c, input, periods));
+ struct qreg sin_output = vir_SIN(c, vir_FSUB(c, input, periods));
return vir_XOR(c, sin_output, vir_SHL(c,
vir_FTOIN(c, periods),
vir_uniform_ui(c, -1)));
c->inputs[attr * 4 + 0] = vir_FXCD(c);
c->inputs[attr * 4 + 1] = vir_FYCD(c);
c->inputs[attr * 4 + 2] = c->payload_z;
- c->inputs[attr * 4 + 3] = vir_SFU(c, V3D_QPU_WADDR_RECIP,
- c->payload_w);
+ c->inputs[attr * 4 + 3] = vir_RECIP(c, c->payload_w);
}
static struct qreg
emit_fragment_varying(struct v3d_compile *c, nir_variable *var,
uint8_t swizzle)
{
- struct qreg vary = vir_reg(QFILE_VARY, ~0);
+ struct qreg r3 = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_R3);
struct qreg r5 = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_R5);
+ struct qreg vary;
+ if (c->devinfo->ver >= 41) {
+ struct qinst *ldvary = vir_add_inst(V3D_QPU_A_NOP, c->undef,
+ c->undef, c->undef);
+ ldvary->qpu.sig.ldvary = true;
+ vary = vir_emit_def(c, ldvary);
+ } else {
+ vir_NOP(c)->qpu.sig.ldvary = true;
+ vary = r3;
+ }
+
/* For gl_PointCoord input or distance along a line, we'll be called
* with no nir_variable, and we don't count toward VPM size so we
* don't track an input slot.
/* FALLTHROUGH */
case INTERP_MODE_SMOOTH:
if (var->data.centroid) {
+ BITSET_SET(c->centroid_flags, i);
return vir_FADD(c, vir_FMUL(c, vary,
c->payload_w_centroid), r5);
} else {
return vir_FADD(c, vir_FMUL(c, vary, c->payload_w), r5);
}
case INTERP_MODE_NOPERSPECTIVE:
- /* C appears after the mov from the varying.
- XXX: improve ldvary setup.
- */
+ BITSET_SET(c->noperspective_flags, i);
return vir_FADD(c, vir_MOV(c, vary), r5);
case INTERP_MODE_FLAT:
BITSET_SET(c->flat_shade_flags, i);
* on the compare_instr's result.
*/
static bool
-ntq_emit_comparison(struct v3d_compile *c, struct qreg *dest,
+ntq_emit_comparison(struct v3d_compile *c,
nir_alu_instr *compare_instr,
- nir_alu_instr *sel_instr)
+ enum v3d_qpu_cond *out_cond)
{
struct qreg src0 = ntq_get_alu_src(c, compare_instr, 0);
- struct qreg src1 = ntq_get_alu_src(c, compare_instr, 1);
+ struct qreg src1;
+ if (nir_op_infos[compare_instr->op].num_inputs > 1)
+ src1 = ntq_get_alu_src(c, compare_instr, 1);
bool cond_invert = false;
+ struct qreg nop = vir_reg(QFILE_NULL, 0);
switch (compare_instr->op) {
- case nir_op_feq:
+ case nir_op_feq32:
case nir_op_seq:
- vir_PF(c, vir_FCMP(c, src0, src1), V3D_QPU_PF_PUSHZ);
+ vir_set_pf(vir_FCMP_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHZ);
break;
- case nir_op_ieq:
- vir_PF(c, vir_XOR(c, src0, src1), V3D_QPU_PF_PUSHZ);
+ case nir_op_ieq32:
+ vir_set_pf(vir_XOR_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHZ);
break;
- case nir_op_fne:
+ case nir_op_fne32:
case nir_op_sne:
- vir_PF(c, vir_FCMP(c, src0, src1), V3D_QPU_PF_PUSHZ);
+ vir_set_pf(vir_FCMP_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHZ);
cond_invert = true;
break;
- case nir_op_ine:
- vir_PF(c, vir_XOR(c, src0, src1), V3D_QPU_PF_PUSHZ);
+ case nir_op_ine32:
+ vir_set_pf(vir_XOR_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHZ);
cond_invert = true;
break;
- case nir_op_fge:
+ case nir_op_fge32:
case nir_op_sge:
- vir_PF(c, vir_FCMP(c, src1, src0), V3D_QPU_PF_PUSHC);
+ vir_set_pf(vir_FCMP_dest(c, nop, src1, src0), V3D_QPU_PF_PUSHC);
break;
- case nir_op_ige:
- vir_PF(c, vir_MIN(c, src1, src0), V3D_QPU_PF_PUSHC);
+ case nir_op_ige32:
+ vir_set_pf(vir_MIN_dest(c, nop, src1, src0), V3D_QPU_PF_PUSHC);
cond_invert = true;
break;
- case nir_op_uge:
- vir_PF(c, vir_SUB(c, src0, src1), V3D_QPU_PF_PUSHC);
+ case nir_op_uge32:
+ vir_set_pf(vir_SUB_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHC);
cond_invert = true;
break;
case nir_op_slt:
- case nir_op_flt:
- vir_PF(c, vir_FCMP(c, src0, src1), V3D_QPU_PF_PUSHN);
+ case nir_op_flt32:
+ vir_set_pf(vir_FCMP_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHN);
break;
- case nir_op_ilt:
- vir_PF(c, vir_MIN(c, src1, src0), V3D_QPU_PF_PUSHC);
+ case nir_op_ilt32:
+ vir_set_pf(vir_MIN_dest(c, nop, src1, src0), V3D_QPU_PF_PUSHC);
break;
- case nir_op_ult:
- vir_PF(c, vir_SUB(c, src0, src1), V3D_QPU_PF_PUSHC);
+ case nir_op_ult32:
+ vir_set_pf(vir_SUB_dest(c, nop, src0, src1), V3D_QPU_PF_PUSHC);
break;
default:
return false;
}
- enum v3d_qpu_cond cond = (cond_invert ?
- V3D_QPU_COND_IFNA :
- V3D_QPU_COND_IFA);
+ *out_cond = cond_invert ? V3D_QPU_COND_IFNA : V3D_QPU_COND_IFA;
- switch (sel_instr->op) {
- case nir_op_seq:
- case nir_op_sne:
- case nir_op_sge:
- case nir_op_slt:
- *dest = vir_SEL(c, cond,
- vir_uniform_f(c, 1.0), vir_uniform_f(c, 0.0));
- break;
-
- case nir_op_bcsel:
- *dest = vir_SEL(c, cond,
- ntq_get_alu_src(c, sel_instr, 1),
- ntq_get_alu_src(c, sel_instr, 2));
- break;
+ return true;
+}
- default:
- *dest = vir_SEL(c, cond,
- vir_uniform_ui(c, ~0), vir_uniform_ui(c, 0));
- break;
+/* Finds an ALU instruction that generates our src value that could
+ * (potentially) be greedily emitted in the consuming instruction.
+ */
+static struct nir_alu_instr *
+ntq_get_alu_parent(nir_src src)
+{
+ if (!src.is_ssa || src.ssa->parent_instr->type != nir_instr_type_alu)
+ return NULL;
+ nir_alu_instr *instr = nir_instr_as_alu(src.ssa->parent_instr);
+ if (!instr)
+ return NULL;
+
+ /* If the ALU instr's srcs are non-SSA, then we would have to avoid
+ * moving emission of the ALU instr down past another write of the
+ * src.
+ */
+ for (int i = 0; i < nir_op_infos[instr->op].num_inputs; i++) {
+ if (!instr->src[i].src.is_ssa)
+ return NULL;
}
- /* Make the temporary for nir_store_dest(). */
- *dest = vir_MOV(c, *dest);
-
- return true;
+ return instr;
}
/**
static struct qreg ntq_emit_bcsel(struct v3d_compile *c, nir_alu_instr *instr,
struct qreg *src)
{
- if (!instr->src[0].src.is_ssa)
- goto out;
- if (instr->src[0].src.ssa->parent_instr->type != nir_instr_type_alu)
- goto out;
- nir_alu_instr *compare =
- nir_instr_as_alu(instr->src[0].src.ssa->parent_instr);
+ nir_alu_instr *compare = ntq_get_alu_parent(instr->src[0].src);
if (!compare)
goto out;
- struct qreg dest;
- if (ntq_emit_comparison(c, &dest, compare, instr))
- return dest;
+ enum v3d_qpu_cond cond;
+ if (ntq_emit_comparison(c, compare, &cond))
+ return vir_MOV(c, vir_SEL(c, cond, src[1], src[2]));
out:
vir_PF(c, src[0], V3D_QPU_PF_PUSHZ);
case nir_op_u2f32:
result = vir_UTOF(c, src[0]);
break;
- case nir_op_b2f:
+ case nir_op_b2f32:
result = vir_AND(c, src[0], vir_uniform_f(c, 1.0));
break;
- case nir_op_b2i:
+ case nir_op_b2i32:
result = vir_AND(c, src[0], vir_uniform_ui(c, 1));
break;
- case nir_op_i2b:
- case nir_op_f2b:
+ case nir_op_i2b32:
+ case nir_op_f2b32:
vir_PF(c, src[0], V3D_QPU_PF_PUSHZ);
result = vir_MOV(c, vir_SEL(c, V3D_QPU_COND_IFNA,
vir_uniform_ui(c, ~0),
result = vir_NOT(c, src[0]);
break;
+ case nir_op_ufind_msb:
+ result = vir_SUB(c, vir_uniform_ui(c, 31), vir_CLZ(c, src[0]));
+ break;
+
case nir_op_imul:
- result = ntq_umul(c, src[0], src[1]);
+ result = vir_UMUL(c, src[0], src[1]);
break;
case nir_op_seq:
case nir_op_sne:
case nir_op_sge:
- case nir_op_slt:
- case nir_op_feq:
- case nir_op_fne:
- case nir_op_fge:
- case nir_op_flt:
- case nir_op_ieq:
- case nir_op_ine:
- case nir_op_ige:
- case nir_op_uge:
- case nir_op_ilt:
- case nir_op_ult:
- if (!ntq_emit_comparison(c, &result, instr, instr)) {
- fprintf(stderr, "Bad comparison instruction\n");
- }
+ case nir_op_slt: {
+ enum v3d_qpu_cond cond;
+ MAYBE_UNUSED bool ok = ntq_emit_comparison(c, instr, &cond);
+ assert(ok);
+ result = vir_MOV(c, vir_SEL(c, cond,
+ vir_uniform_f(c, 1.0),
+ vir_uniform_f(c, 0.0)));
+ break;
+ }
+
+ case nir_op_feq32:
+ case nir_op_fne32:
+ case nir_op_fge32:
+ case nir_op_flt32:
+ case nir_op_ieq32:
+ case nir_op_ine32:
+ case nir_op_ige32:
+ case nir_op_uge32:
+ case nir_op_ilt32:
+ case nir_op_ult32: {
+ enum v3d_qpu_cond cond;
+ MAYBE_UNUSED bool ok = ntq_emit_comparison(c, instr, &cond);
+ assert(ok);
+ result = vir_MOV(c, vir_SEL(c, cond,
+ vir_uniform_ui(c, ~0),
+ vir_uniform_ui(c, 0)));
break;
+ }
- case nir_op_bcsel:
+ case nir_op_b32csel:
result = ntq_emit_bcsel(c, instr, src);
break;
case nir_op_fcsel:
break;
case nir_op_frcp:
- result = vir_SFU(c, V3D_QPU_WADDR_RECIP, src[0]);
+ result = vir_RECIP(c, src[0]);
break;
case nir_op_frsq:
- result = vir_SFU(c, V3D_QPU_WADDR_RSQRT, src[0]);
+ result = vir_RSQRT(c, src[0]);
break;
case nir_op_fexp2:
- result = vir_SFU(c, V3D_QPU_WADDR_EXP, src[0]);
+ result = vir_EXP(c, src[0]);
break;
case nir_op_flog2:
- result = vir_SFU(c, V3D_QPU_WADDR_LOG, src[0]);
+ result = vir_LOG(c, src[0]);
break;
case nir_op_fceil:
result = vir_FDY(c, src[0]);
break;
+ case nir_op_uadd_carry:
+ vir_PF(c, vir_ADD(c, src[0], src[1]), V3D_QPU_PF_PUSHC);
+ result = vir_MOV(c, vir_SEL(c, V3D_QPU_COND_IFA,
+ vir_uniform_ui(c, ~0),
+ vir_uniform_ui(c, 0)));
+ break;
+
+ case nir_op_pack_half_2x16_split:
+ result = vir_VFPACK(c, src[0], src[1]);
+ break;
+
+ case nir_op_unpack_half_2x16_split_x:
+ /* XXX perf: It would be good to be able to merge this unpack
+ * with whatever uses our result.
+ */
+ result = vir_FMOV(c, src[0]);
+ vir_set_unpack(c->defs[result.index], 0, V3D_QPU_UNPACK_L);
+ break;
+
+ case nir_op_unpack_half_2x16_split_y:
+ result = vir_FMOV(c, src[0]);
+ vir_set_unpack(c->defs[result.index], 0, V3D_QPU_UNPACK_H);
+ break;
+
default:
fprintf(stderr, "unknown NIR ALU inst: ");
nir_print_instr(&instr->instr, stderr);
/* We have a scalar result, so the instruction should only have a
* single channel written to.
*/
- assert(util_is_power_of_two(instr->dest.write_mask));
+ assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
ntq_store_dest(c, &instr->dest.dest,
ffs(instr->dest.write_mask) - 1, result);
}
#define TLB_TYPE_DEPTH ((2 << 6) | (0 << 4))
#define TLB_DEPTH_TYPE_INVARIANT (0 << 2) /* Unmodified sideband input used */
#define TLB_DEPTH_TYPE_PER_PIXEL (1 << 2) /* QPU result used */
+#define TLB_V42_DEPTH_TYPE_INVARIANT (0 << 3) /* Unmodified sideband input used */
+#define TLB_V42_DEPTH_TYPE_PER_PIXEL (1 << 3) /* QPU result used */
/* Stencil is a single 32-bit write. */
#define TLB_TYPE_STENCIL_ALPHA ((2 << 6) | (1 << 4))
has_any_tlb_color_write = true;
}
+ if (c->fs_key->sample_alpha_to_coverage && c->output_color_var[0]) {
+ struct nir_variable *var = c->output_color_var[0];
+ struct qreg *color = &c->outputs[var->data.driver_location * 4];
+
+ vir_SETMSF_dest(c, vir_reg(QFILE_NULL, 0),
+ vir_AND(c,
+ vir_MSF(c),
+ vir_FTOC(c, color[3])));
+ }
+
if (c->output_position_index != -1) {
struct qinst *inst = vir_MOV_dest(c,
vir_reg(QFILE_TLBU, 0),
c->outputs[c->output_position_index]);
+ uint8_t tlb_specifier = TLB_TYPE_DEPTH;
+
+ if (c->devinfo->ver >= 42) {
+ tlb_specifier |= (TLB_V42_DEPTH_TYPE_PER_PIXEL |
+ TLB_SAMPLE_MODE_PER_PIXEL);
+ } else
+ tlb_specifier |= TLB_DEPTH_TYPE_PER_PIXEL;
inst->src[vir_get_implicit_uniform_src(inst)] =
- vir_uniform_ui(c,
- TLB_TYPE_DEPTH |
- TLB_DEPTH_TYPE_PER_PIXEL |
- 0xffffff00);
- } else if (c->s->info.fs.uses_discard || !has_any_tlb_color_write) {
+ vir_uniform_ui(c, tlb_specifier | 0xffffff00);
+ } else if (c->s->info.fs.uses_discard ||
+ c->fs_key->sample_alpha_to_coverage ||
+ !has_any_tlb_color_write) {
/* Emit passthrough Z if it needed to be delayed until shader
* end due to potential discards.
*
struct qinst *inst = vir_MOV_dest(c,
vir_reg(QFILE_TLBU, 0),
vir_reg(QFILE_NULL, 0));
+ uint8_t tlb_specifier = TLB_TYPE_DEPTH;
+
+ if (c->devinfo->ver >= 42) {
+ /* The spec says the PER_PIXEL flag is ignored for
+ * invariant writes, but the simulator demands it.
+ */
+ tlb_specifier |= (TLB_V42_DEPTH_TYPE_INVARIANT |
+ TLB_SAMPLE_MODE_PER_PIXEL);
+ } else {
+ tlb_specifier |= TLB_DEPTH_TYPE_INVARIANT;
+ }
inst->src[vir_get_implicit_uniform_src(inst)] =
- vir_uniform_ui(c,
- TLB_TYPE_DEPTH |
- TLB_DEPTH_TYPE_INVARIANT |
- 0xffffff00);
+ vir_uniform_ui(c, tlb_specifier | 0xffffff00);
}
/* XXX: Performance improvement: Merge Z write and color writes TLB
conf |= TLB_SAMPLE_MODE_PER_PIXEL;
conf |= (7 - rt) << TLB_RENDER_TARGET_SHIFT;
+ if (c->fs_key->swap_color_rb & (1 << rt))
+ num_components = MAX2(num_components, 3);
+
assert(num_components != 0);
switch (glsl_get_base_type(var->type)) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
- conf |= TLB_TYPE_I32_COLOR;
+ /* The F32 vs I32 distinction was dropped in 4.2. */
+ if (c->devinfo->ver < 42)
+ conf |= TLB_TYPE_I32_COLOR;
+ else
+ conf |= TLB_TYPE_F32_COLOR;
conf |= ((num_components - 1) <<
TLB_VEC_SIZE_MINUS_1_SHIFT);
struct qreg b = color[2];
struct qreg a = color[3];
- if (c->fs_key->f32_color_rb) {
+ if (c->fs_key->f32_color_rb & (1 << rt)) {
conf |= TLB_TYPE_F32_COLOR;
conf |= ((num_components - 1) <<
TLB_VEC_SIZE_MINUS_1_SHIFT);
b = color[0];
}
+ if (c->fs_key->sample_alpha_to_one)
+ a = vir_uniform_f(c, 1.0);
+
if (c->fs_key->f32_color_rb & (1 << rt)) {
- inst = vir_MOV_dest(c, vir_reg(QFILE_TLBU, 0), color[0]);
+ inst = vir_MOV_dest(c, vir_reg(QFILE_TLBU, 0), r);
inst->src[vir_get_implicit_uniform_src(inst)] =
vir_uniform_ui(c, conf);
- for (int i = 1; i < num_components; i++) {
- inst = vir_MOV_dest(c, vir_reg(QFILE_TLB, 0),
- color[i]);
- }
+ if (num_components >= 2)
+ vir_MOV_dest(c, vir_reg(QFILE_TLB, 0), g);
+ if (num_components >= 3)
+ vir_MOV_dest(c, vir_reg(QFILE_TLB, 0), b);
+ if (num_components >= 4)
+ vir_MOV_dest(c, vir_reg(QFILE_TLB, 0), a);
} else {
inst = vir_VFPACK_dest(c, vir_reg(QFILE_TLB, 0), r, g);
if (conf != ~0) {
if (c->devinfo->ver >= 40)
return;
- uint32_t packed;
- struct V3D33_VPM_GENERIC_BLOCK_WRITE_SETUP unpacked = {
- V3D33_VPM_GENERIC_BLOCK_WRITE_SETUP_header,
-
- .horiz = true,
- .laned = false,
- .segs = true,
- .stride = 1,
- .size = VPM_SETUP_SIZE_32_BIT,
- .addr = 0,
- };
-
- V3D33_VPM_GENERIC_BLOCK_WRITE_SETUP_pack(NULL,
- (uint8_t *)&packed,
- &unpacked);
- vir_VPMSETUP(c, vir_uniform_ui(c, packed));
+ v3d33_vir_vpm_write_setup(c);
+}
+
+/**
+ * Sets up c->outputs[c->output_position_index] for the vertex shader
+ * epilogue, if an output vertex position wasn't specified in the user's
+ * shader. This may be the case for transform feedback with rasterizer
+ * discard enabled.
+ */
+static void
+setup_default_position(struct v3d_compile *c)
+{
+ if (c->output_position_index != -1)
+ return;
+
+ c->output_position_index = c->outputs_array_size;
+ for (int i = 0; i < 4; i++) {
+ add_output(c,
+ c->output_position_index + i,
+ VARYING_SLOT_POS, i);
+ }
}
static void
emit_vert_end(struct v3d_compile *c)
{
+ setup_default_position(c);
+
uint32_t vpm_index = 0;
- struct qreg rcp_w = vir_SFU(c, V3D_QPU_WADDR_RECIP,
- c->outputs[c->output_position_index + 3]);
+ struct qreg rcp_w = vir_RECIP(c,
+ c->outputs[c->output_position_index + 3]);
emit_vpm_write_setup(c);
vir_VPM_WRITE(c, vir_uniform_f(c, 0.0),
&vpm_index);
}
+
+ /* GFXH-1684: VPM writes need to be complete by the end of the shader.
+ */
+ if (c->devinfo->ver >= 40 && c->devinfo->ver <= 42)
+ vir_VPMWT(c);
}
void
NIR_PASS(progress, s, nir_opt_dce);
NIR_PASS(progress, s, nir_opt_dead_cf);
NIR_PASS(progress, s, nir_opt_cse);
- NIR_PASS(progress, s, nir_opt_peephole_select, 8);
+ NIR_PASS(progress, s, nir_opt_peephole_select, 8, true, true);
NIR_PASS(progress, s, nir_opt_algebraic);
NIR_PASS(progress, s, nir_opt_constant_folding);
NIR_PASS(progress, s, nir_opt_undef);
} while (progress);
+
+ NIR_PASS(progress, s, nir_opt_move_load_ubo);
}
static int
uint32_t num_components = MIN2(*remaining, 32);
- struct V3D33_VPM_GENERIC_BLOCK_READ_SETUP unpacked = {
- V3D33_VPM_GENERIC_BLOCK_READ_SETUP_header,
-
- .horiz = true,
- .laned = false,
- /* If the field is 0, that means a read count of 32. */
- .num = num_components & 31,
- .segs = true,
- .stride = 1,
- .size = VPM_SETUP_SIZE_32_BIT,
- .addr = c->num_inputs,
- };
-
- uint32_t packed;
- V3D33_VPM_GENERIC_BLOCK_READ_SETUP_pack(NULL,
- (uint8_t *)&packed,
- &unpacked);
- vir_VPMSETUP(c, vir_uniform_ui(c, packed));
+ v3d33_vir_vpm_read_setup(c, num_components);
*num_components_queued = num_components - 1;
*remaining -= num_components;
}
static void
-ntq_setup_inputs(struct v3d_compile *c)
+ntq_setup_vpm_inputs(struct v3d_compile *c)
+{
+ /* Figure out how many components of each vertex attribute the shader
+ * uses. Each variable should have been split to individual
+ * components and unused ones DCEed. The vertex fetcher will load
+ * from the start of the attribute to the number of components we
+ * declare we need in c->vattr_sizes[].
+ */
+ nir_foreach_variable(var, &c->s->inputs) {
+ /* No VS attribute array support. */
+ assert(MAX2(glsl_get_length(var->type), 1) == 1);
+
+ unsigned loc = var->data.driver_location;
+ int start_component = var->data.location_frac;
+ int num_components = glsl_get_components(var->type);
+
+ c->vattr_sizes[loc] = MAX2(c->vattr_sizes[loc],
+ start_component + num_components);
+ }
+
+ unsigned num_components = 0;
+ uint32_t vpm_components_queued = 0;
+ bool uses_iid = c->s->info.system_values_read &
+ (1ull << SYSTEM_VALUE_INSTANCE_ID);
+ bool uses_vid = c->s->info.system_values_read &
+ (1ull << SYSTEM_VALUE_VERTEX_ID);
+ num_components += uses_iid;
+ num_components += uses_vid;
+
+ for (int i = 0; i < ARRAY_SIZE(c->vattr_sizes); i++)
+ num_components += c->vattr_sizes[i];
+
+ if (uses_iid) {
+ c->iid = ntq_emit_vpm_read(c, &vpm_components_queued,
+ &num_components, ~0);
+ }
+
+ if (uses_vid) {
+ c->vid = ntq_emit_vpm_read(c, &vpm_components_queued,
+ &num_components, ~0);
+ }
+
+ for (int loc = 0; loc < ARRAY_SIZE(c->vattr_sizes); loc++) {
+ resize_qreg_array(c, &c->inputs, &c->inputs_array_size,
+ (loc + 1) * 4);
+
+ for (int i = 0; i < c->vattr_sizes[loc]; i++) {
+ c->inputs[loc * 4 + i] =
+ ntq_emit_vpm_read(c,
+ &vpm_components_queued,
+ &num_components,
+ loc * 4 + i);
+
+ }
+ }
+
+ if (c->devinfo->ver >= 40) {
+ assert(vpm_components_queued == num_components);
+ } else {
+ assert(vpm_components_queued == 0);
+ assert(num_components == 0);
+ }
+}
+
+static void
+ntq_setup_fs_inputs(struct v3d_compile *c)
{
unsigned num_entries = 0;
unsigned num_components = 0;
*/
qsort(&vars, num_entries, sizeof(*vars), driver_location_compare);
- uint32_t vpm_components_queued = 0;
- if (c->s->info.stage == MESA_SHADER_VERTEX) {
- bool uses_iid = c->s->info.system_values_read &
- (1ull << SYSTEM_VALUE_INSTANCE_ID);
- bool uses_vid = c->s->info.system_values_read &
- (1ull << SYSTEM_VALUE_VERTEX_ID);
-
- num_components += uses_iid;
- num_components += uses_vid;
-
- if (uses_iid) {
- c->iid = ntq_emit_vpm_read(c, &vpm_components_queued,
- &num_components, ~0);
- }
-
- if (uses_vid) {
- c->vid = ntq_emit_vpm_read(c, &vpm_components_queued,
- &num_components, ~0);
- }
- }
-
for (unsigned i = 0; i < num_entries; i++) {
nir_variable *var = vars[i];
unsigned array_len = MAX2(glsl_get_length(var->type), 1);
resize_qreg_array(c, &c->inputs, &c->inputs_array_size,
(loc + 1) * 4);
- if (c->s->info.stage == MESA_SHADER_FRAGMENT) {
- if (var->data.location == VARYING_SLOT_POS) {
- emit_fragcoord_input(c, loc);
- } else if (var->data.location == VARYING_SLOT_PNTC ||
- (var->data.location >= VARYING_SLOT_VAR0 &&
- (c->fs_key->point_sprite_mask &
- (1 << (var->data.location -
- VARYING_SLOT_VAR0))))) {
- c->inputs[loc * 4 + 0] = c->point_x;
- c->inputs[loc * 4 + 1] = c->point_y;
- } else {
- emit_fragment_input(c, loc, var);
- }
- } else {
- int var_components = glsl_get_components(var->type);
-
- for (int i = 0; i < var_components; i++) {
- c->inputs[loc * 4 + i] =
- ntq_emit_vpm_read(c,
- &vpm_components_queued,
- &num_components,
- loc * 4 + i);
-
- }
- c->vattr_sizes[loc] = var_components;
- }
- }
-
- if (c->s->info.stage == MESA_SHADER_VERTEX) {
- if (c->devinfo->ver >= 40) {
- assert(vpm_components_queued == num_components);
+ if (var->data.location == VARYING_SLOT_POS) {
+ emit_fragcoord_input(c, loc);
+ } else if (var->data.location == VARYING_SLOT_PNTC ||
+ (var->data.location >= VARYING_SLOT_VAR0 &&
+ (c->fs_key->point_sprite_mask &
+ (1 << (var->data.location -
+ VARYING_SLOT_VAR0))))) {
+ c->inputs[loc * 4 + 0] = c->point_x;
+ c->inputs[loc * 4 + 1] = c->point_y;
} else {
- assert(vpm_components_queued == 0);
- assert(num_components == 0);
+ emit_fragment_input(c, loc, var);
}
}
}
assert(array_len == 1);
(void)array_len;
- for (int i = 0; i < glsl_get_vector_elements(var->type); i++) {
+ for (int i = 0; i < 4 - var->data.location_frac; i++) {
add_output(c, loc + var->data.location_frac + i,
var->data.location,
var->data.location_frac + i);
static void
ntq_emit_load_const(struct v3d_compile *c, nir_load_const_instr *instr)
{
+ /* XXX perf: Experiment with using immediate loads to avoid having
+ * these end up in the uniform stream. Watch out for breaking the
+ * small immediates optimization in the process!
+ */
struct qreg *qregs = ntq_init_ssa_def(c, &instr->def);
for (int i = 0; i < instr->def.num_components; i++)
qregs[i] = vir_uniform_ui(c, instr->value.u32[i]);
static void
ntq_emit_intrinsic(struct v3d_compile *c, nir_intrinsic_instr *instr)
{
- nir_const_value *const_offset;
unsigned offset;
switch (instr->intrinsic) {
case nir_intrinsic_load_uniform:
assert(instr->num_components == 1);
- const_offset = nir_src_as_const_value(instr->src[0]);
- if (const_offset) {
- offset = nir_intrinsic_base(instr) + const_offset->u32[0];
+ if (nir_src_is_const(instr->src[0])) {
+ offset = (nir_intrinsic_base(instr) +
+ nir_src_as_uint(instr->src[0]));
assert(offset % 4 == 0);
/* We need dwords */
offset = offset / 4;
case nir_intrinsic_load_ubo:
for (int i = 0; i < instr->num_components; i++) {
- int ubo = nir_src_as_const_value(instr->src[0])->u32[0];
+ int ubo = nir_src_as_uint(instr->src[0]);
+ /* XXX perf: On V3D 4.x with uniform offsets, we
+ * should probably try setting UBOs up in the A
+ * register file and doing a sequence of loads that
+ * way.
+ */
/* Adjust for where we stored the TGSI register base. */
vir_ADD_dest(c,
vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUA),
ntq_get_src(c, instr->src[1], 0),
vir_uniform_ui(c, i * 4)));
+ vir_emit_thrsw(c);
+
ntq_store_dest(c, &instr->dest, i, vir_LDTMU(c));
}
break;
- const_offset = nir_src_as_const_value(instr->src[0]);
- if (const_offset) {
- offset = nir_intrinsic_base(instr) + const_offset->u32[0];
+ if (nir_src_is_const(instr->src[0])) {
+ offset = (nir_intrinsic_base(instr) +
+ nir_src_as_uint(instr->src[0]));
assert(offset % 4 == 0);
/* We need dwords */
offset = offset / 4;
break;
case nir_intrinsic_load_sample_mask_in:
+ ntq_store_dest(c, &instr->dest, 0, vir_MSF(c));
+ break;
+
+ case nir_intrinsic_load_helper_invocation:
+ vir_PF(c, vir_MSF(c), V3D_QPU_PF_PUSHZ);
ntq_store_dest(c, &instr->dest, 0,
- vir_uniform(c, QUNIFORM_SAMPLE_MASK, 0));
+ vir_MOV(c, vir_SEL(c, V3D_QPU_COND_IFA,
+ vir_uniform_ui(c, ~0),
+ vir_uniform_ui(c, 0))));
break;
case nir_intrinsic_load_front_face:
break;
case nir_intrinsic_load_input:
- const_offset = nir_src_as_const_value(instr->src[0]);
- assert(const_offset && "v3d doesn't support indirect inputs");
for (int i = 0; i < instr->num_components; i++) {
- offset = nir_intrinsic_base(instr) + const_offset->u32[0];
+ offset = (nir_intrinsic_base(instr) +
+ nir_src_as_uint(instr->src[0]));
int comp = nir_intrinsic_component(instr) + i;
ntq_store_dest(c, &instr->dest, i,
vir_MOV(c, c->inputs[offset * 4 + comp]));
break;
case nir_intrinsic_store_output:
- const_offset = nir_src_as_const_value(instr->src[1]);
- assert(const_offset && "v3d doesn't support indirect outputs");
offset = ((nir_intrinsic_base(instr) +
- const_offset->u32[0]) * 4 +
+ nir_src_as_uint(instr->src[1])) * 4 +
nir_intrinsic_component(instr));
for (int i = 0; i < instr->num_components; i++) {
/* Clears (activates) the execute flags for any channels whose jump target
* matches this block.
+ *
+ * XXX perf: Could we be using flpush/flpop somehow for our execution channel
+ * enabling?
+ *
+ * XXX perf: For uniform control flow, we should be able to skip c->execute
+ * handling entirely.
*/
static void
ntq_activate_execute_for_block(struct v3d_compile *c)
{
- vir_PF(c, vir_SUB(c, c->execute, vir_uniform_ui(c, c->cur_block->index)),
- V3D_QPU_PF_PUSHZ);
+ vir_set_pf(vir_XOR_dest(c, vir_reg(QFILE_NULL, 0),
+ c->execute, vir_uniform_ui(c, c->cur_block->index)),
+ V3D_QPU_PF_PUSHZ);
vir_MOV_cond(c, V3D_QPU_COND_IFA, c->execute, vir_uniform_ui(c, 0));
}
was_top_level = true;
}
- /* Set A for executing (execute == 0) and jumping (if->condition ==
- * 0) channels, and then update execute flags for those to point to
- * the ELSE block.
+ /* Set up the flags for the IF condition (taking the THEN branch). */
+ nir_alu_instr *if_condition_alu = ntq_get_alu_parent(if_stmt->condition);
+ enum v3d_qpu_cond cond;
+ if (!if_condition_alu ||
+ !ntq_emit_comparison(c, if_condition_alu, &cond)) {
+ vir_PF(c, ntq_get_src(c, if_stmt->condition, 0),
+ V3D_QPU_PF_PUSHZ);
+ cond = V3D_QPU_COND_IFNA;
+ }
+
+ /* Update the flags+cond to mean "Taking the ELSE branch (!cond) and
+ * was previously active (execute Z) for updating the exec flags.
*/
- vir_PF(c, vir_OR(c,
- c->execute,
- ntq_get_src(c, if_stmt->condition, 0)),
- V3D_QPU_PF_PUSHZ);
- vir_MOV_cond(c, V3D_QPU_COND_IFA,
+ if (was_top_level) {
+ cond = v3d_qpu_cond_invert(cond);
+ } else {
+ struct qinst *inst = vir_MOV_dest(c, vir_reg(QFILE_NULL, 0),
+ c->execute);
+ if (cond == V3D_QPU_COND_IFA) {
+ vir_set_uf(inst, V3D_QPU_UF_NORNZ);
+ } else {
+ vir_set_uf(inst, V3D_QPU_UF_ANDZ);
+ cond = V3D_QPU_COND_IFA;
+ }
+ }
+
+ vir_MOV_cond(c, cond,
c->execute,
vir_uniform_ui(c, else_block->index));
vir_uniform_ui(c, after_block->index));
/* If everything points at ENDIF, then jump there immediately. */
- vir_PF(c, vir_SUB(c, c->execute,
+ vir_PF(c, vir_XOR(c, c->execute,
vir_uniform_ui(c, after_block->index)),
V3D_QPU_PF_PUSHZ);
vir_BRANCH(c, V3D_QPU_BRANCH_COND_ALLA);
*
* XXX: Use the .ORZ flags update, instead.
*/
- vir_PF(c, vir_SUB(c,
+ vir_PF(c, vir_XOR(c,
c->execute,
vir_uniform_ui(c, c->loop_cont_block->index)),
V3D_QPU_PF_PUSHZ);
vir_PF(c, c->execute, V3D_QPU_PF_PUSHZ);
- vir_BRANCH(c, V3D_QPU_BRANCH_COND_ANYA);
+ struct qinst *branch = vir_BRANCH(c, V3D_QPU_BRANCH_COND_ANYA);
+ /* Pixels that were not dispatched or have been discarded should not
+ * contribute to looping again.
+ */
+ branch->qpu.branch.msfign = V3D_QPU_MSFIGN_P;
vir_link_blocks(c->cur_block, c->loop_cont_block);
vir_link_blocks(c->cur_block, c->loop_break_block);
c->loop_break_block = save_loop_break_block;
c->loop_cont_block = save_loop_cont_block;
+
+ c->loops++;
}
static void
c->payload_w_centroid = vir_MOV(c, vir_reg(QFILE_REG, 1));
c->payload_z = vir_MOV(c, vir_reg(QFILE_REG, 2));
+ /* XXX perf: We could set the "disable implicit point/line
+ * varyings" field in the shader record and not emit these, if
+ * they're not going to be used.
+ */
if (c->fs_key->is_points) {
c->point_x = emit_fragment_varying(c, NULL, 0);
c->point_y = emit_fragment_varying(c, NULL, 0);
}
}
- ntq_setup_inputs(c);
+ if (c->s->info.stage == MESA_SHADER_FRAGMENT)
+ ntq_setup_fs_inputs(c);
+ else
+ ntq_setup_vpm_inputs(c);
+
ntq_setup_outputs(c);
ntq_setup_uniforms(c);
ntq_setup_registers(c, &c->s->registers);
}
const nir_shader_compiler_options v3d_nir_options = {
+ .lower_all_io_to_temps = true,
.lower_extract_byte = true,
.lower_extract_word = true,
- .lower_bitfield_insert = true,
- .lower_bitfield_extract = true,
+ .lower_bfm = true,
+ .lower_bitfield_insert_to_shifts = true,
+ .lower_bitfield_extract_to_shifts = true,
+ .lower_bitfield_reverse = true,
+ .lower_bit_count = true,
.lower_pack_unorm_2x16 = true,
.lower_pack_snorm_2x16 = true,
.lower_pack_unorm_4x8 = true,
.lower_pack_snorm_4x8 = true,
.lower_unpack_unorm_4x8 = true,
.lower_unpack_snorm_4x8 = true,
+ .lower_pack_half_2x16 = true,
+ .lower_unpack_half_2x16 = true,
.lower_fdiv = true,
+ .lower_find_lsb = true,
.lower_ffma = true,
.lower_flrp32 = true,
.lower_fpow = true,
.lower_fsat = true,
.lower_fsqrt = true,
+ .lower_ifind_msb = true,
+ .lower_ldexp = true,
+ .lower_mul_high = true,
+ .lower_wpos_pntc = true,
.native_integers = true,
};
+/**
+ * When demoting a shader down to single-threaded, removes the THRSW
+ * instructions (one will still be inserted at v3d_vir_to_qpu() for the
+ * program end).
+ */
+static void
+vir_remove_thrsw(struct v3d_compile *c)
+{
+ vir_for_each_block(block, c) {
+ vir_for_each_inst_safe(inst, block) {
+ if (inst->qpu.sig.thrsw)
+ vir_remove_instruction(c, inst);
+ }
+ }
+
+ c->last_thrsw = NULL;
+}
-#if 0
-static int
-count_nir_instrs(nir_shader *nir)
+void
+vir_emit_last_thrsw(struct v3d_compile *c)
{
- int count = 0;
- nir_foreach_function(function, nir) {
- if (!function->impl)
- continue;
- nir_foreach_block(block, function->impl) {
- nir_foreach_instr(instr, block)
- count++;
+ /* On V3D before 4.1, we need a TMU op to be outstanding when thread
+ * switching, so disable threads if we didn't do any TMU ops (each of
+ * which would have emitted a THRSW).
+ */
+ if (!c->last_thrsw_at_top_level && c->devinfo->ver < 41) {
+ c->threads = 1;
+ if (c->last_thrsw)
+ vir_remove_thrsw(c);
+ return;
+ }
+
+ /* If we're threaded and the last THRSW was in conditional code, then
+ * we need to emit another one so that we can flag it as the last
+ * thrsw.
+ */
+ if (c->last_thrsw && !c->last_thrsw_at_top_level) {
+ assert(c->devinfo->ver >= 41);
+ vir_emit_thrsw(c);
+ }
+
+ /* If we're threaded, then we need to mark the last THRSW instruction
+ * so we can emit a pair of them at QPU emit time.
+ *
+ * For V3D 4.x, we can spawn the non-fragment shaders already in the
+ * post-last-THRSW state, so we can skip this.
+ */
+ if (!c->last_thrsw && c->s->info.stage == MESA_SHADER_FRAGMENT) {
+ assert(c->devinfo->ver >= 41);
+ vir_emit_thrsw(c);
+ }
+
+ if (c->last_thrsw)
+ c->last_thrsw->is_last_thrsw = true;
+}
+
+/* There's a flag in the shader for "center W is needed for reasons other than
+ * non-centroid varyings", so we just walk the program after VIR optimization
+ * to see if it's used. It should be harmless to set even if we only use
+ * center W for varyings.
+ */
+static void
+vir_check_payload_w(struct v3d_compile *c)
+{
+ if (c->s->info.stage != MESA_SHADER_FRAGMENT)
+ return;
+
+ vir_for_each_inst_inorder(inst, c) {
+ for (int i = 0; i < vir_get_nsrc(inst); i++) {
+ if (inst->src[i].file == QFILE_REG &&
+ inst->src[i].index == 0) {
+ c->uses_center_w = true;
+ return;
+ }
}
}
- return count;
+
}
-#endif
void
v3d_nir_to_vir(struct v3d_compile *c)
nir_to_vir(c);
+ /* Emit the last THRSW before STVPM and TLB writes. */
+ vir_emit_last_thrsw(c);
+
switch (c->s->info.stage) {
case MESA_SHADER_FRAGMENT:
emit_frag_end(c);
vir_optimize(c);
vir_lower_uniforms(c);
- /* XXX: vir_schedule_instructions(c); */
+ vir_check_payload_w(c);
+
+ /* XXX perf: On VC4, we do a VIR-level instruction scheduling here.
+ * We used that on that platform to pipeline TMU writes and reduce the
+ * number of thread switches, as well as try (mostly successfully) to
+ * reduce maximum register pressure to allow more threads. We should
+ * do something of that sort for V3D -- either instruction scheduling
+ * here, or delay the the THRSW and LDTMUs from our texture
+ * instructions until the results are needed.
+ */
if (V3D_DEBUG & (V3D_DEBUG_VIR |
v3d_debug_flag_for_shader_stage(c->s->info.stage))) {
fprintf(stderr, "\n");
}
- v3d_vir_to_qpu(c);
+ /* Attempt to allocate registers for the temporaries. If we fail,
+ * reduce thread count and try again.
+ */
+ int min_threads = (c->devinfo->ver >= 41) ? 2 : 1;
+ struct qpu_reg *temp_registers;
+ while (true) {
+ bool spilled;
+ temp_registers = v3d_register_allocate(c, &spilled);
+ if (spilled)
+ continue;
+
+ if (temp_registers)
+ break;
+
+ if (c->threads == min_threads) {
+ fprintf(stderr, "Failed to register allocate at %d threads:\n",
+ c->threads);
+ vir_dump(c);
+ c->failed = true;
+ return;
+ }
+
+ c->threads /= 2;
+
+ if (c->threads == 1)
+ vir_remove_thrsw(c);
+ }
+
+ v3d_vir_to_qpu(c, temp_registers);
}
projects / mesa.git / blobdiff