/* Vertex program parameters from curbe:
*/
if (c->vp->use_const_buffer) {
- /* get constants from a real constant buffer */
- c->prog_data.curb_read_length = 0;
- c->prog_data.nr_params = 4; /* XXX 0 causes a bug elsewhere... */
+ int max_constant = BRW_MAX_GRF - 20 - c->vp->program.Base.NumTemporaries;
+ int constant = 0;
+
+ /* We've got more constants than we can load with the push
+ * mechanism. This is often correlated with reladdr loads where
+ * we should probably be using a pull mechanism anyway to avoid
+ * excessive reading. However, the pull mechanism is slow in
+ * general. So, we try to allocate as many non-reladdr-loaded
+ * constants through the push buffer as we can before giving up.
+ */
+ memset(c->constant_map, -1, c->vp->program.Base.Parameters->NumParameters);
+ for (i = 0;
+ i < c->vp->program.Base.NumInstructions && constant < max_constant;
+ i++) {
+ struct prog_instruction *inst = &c->vp->program.Base.Instructions[i];
+ int arg;
+
+ for (arg = 0; arg < 3 && constant < max_constant; arg++) {
+ if ((inst->SrcReg[arg].File != PROGRAM_STATE_VAR &&
+ inst->SrcReg[arg].File != PROGRAM_CONSTANT &&
+ inst->SrcReg[arg].File != PROGRAM_UNIFORM &&
+ inst->SrcReg[arg].File != PROGRAM_ENV_PARAM &&
+ inst->SrcReg[arg].File != PROGRAM_LOCAL_PARAM) ||
+ inst->SrcReg[arg].RelAddr)
+ continue;
+
+ if (c->constant_map[inst->SrcReg[arg].Index] == -1) {
+ c->constant_map[inst->SrcReg[arg].Index] = constant++;
+ }
+ }
+ }
+
+ for (i = 0; i < constant; i++) {
+ c->regs[PROGRAM_STATE_VAR][i] = stride( brw_vec4_grf(reg+i/2,
+ (i%2) * 4),
+ 0, 4, 1);
+ }
+ reg += (constant + 1) / 2;
+ c->prog_data.curb_read_length = reg - 1;
+ /* XXX 0 causes a bug elsewhere... */
+ c->prog_data.nr_params = MAX2(constant * 4, 4);
}
else {
/* use a section of the GRF for constants */
c->first_output = reg;
c->first_overflow_output = 0;
- if (intel->is_ironlake)
- mrf = 8;
+ if (intel->gen >= 6)
+ mrf = 6;
+ else if (intel->is_ironlake)
+ mrf = 8;
else
- mrf = 4;
+ mrf = 4;
for (i = 0; i < VERT_RESULT_MAX; i++) {
if (c->prog_data.outputs_written & BITFIELD64_BIT(i)) {
}
}
- c->stack = brw_uw16_reg(BRW_GENERAL_REGISTER_FILE, reg, 0);
- reg += 2;
+ if (c->needs_stack) {
+ c->stack = brw_uw16_reg(BRW_GENERAL_REGISTER_FILE, reg, 0);
+ reg += 2;
+ }
/* Some opcodes need an internal temporary:
*/
*/
attributes_in_vue = MAX2(c->nr_outputs, c->nr_inputs);
- if (intel->is_ironlake)
- c->prog_data.urb_entry_size = (attributes_in_vue + 6 + 3) / 4;
+ if (intel->gen >= 6)
+ c->prog_data.urb_entry_size = (attributes_in_vue + 4 + 7) / 8;
+ else if (intel->is_ironlake)
+ c->prog_data.urb_entry_size = (attributes_in_vue + 6 + 3) / 4;
else
- c->prog_data.urb_entry_size = (attributes_in_vue + 2 + 3) / 4;
+ c->prog_data.urb_entry_size = (attributes_in_vue + 2 + 3) / 4;
c->prog_data.total_grf = reg;
if (INTEL_DEBUG & DEBUG_VS) {
- _mesa_printf("%s NumAddrRegs %d\n", __FUNCTION__, c->vp->program.Base.NumAddressRegs);
- _mesa_printf("%s NumTemps %d\n", __FUNCTION__, c->vp->program.Base.NumTemporaries);
- _mesa_printf("%s reg = %d\n", __FUNCTION__, reg);
+ printf("%s NumAddrRegs %d\n", __FUNCTION__, c->vp->program.Base.NumAddressRegs);
+ printf("%s NumTemps %d\n", __FUNCTION__, c->vp->program.Base.NumTemporaries);
+ printf("%s reg = %d\n", __FUNCTION__, reg);
}
}
* whether that turns out to be a simulator bug or not:
*/
struct brw_compile *p = &c->func;
+ struct intel_context *intel = &p->brw->intel;
struct brw_reg tmp = dst;
- GLboolean need_tmp = (dst.dw1.bits.writemask != 0xf ||
- dst.file != BRW_GENERAL_REGISTER_FILE);
+ GLboolean need_tmp = (intel->gen < 6 &&
+ (dst.dw1.bits.writemask != 0xf ||
+ dst.file != BRW_GENERAL_REGISTER_FILE));
if (need_tmp)
tmp = get_tmp(c);
GLuint precision)
{
struct brw_compile *p = &c->func;
+ struct intel_context *intel = &p->brw->intel;
struct brw_reg tmp = dst;
- GLboolean need_tmp = (dst.dw1.bits.writemask != 0xf ||
- dst.file != BRW_GENERAL_REGISTER_FILE);
+ GLboolean need_tmp = (intel->gen < 6 &&
+ (dst.dw1.bits.writemask != 0xf ||
+ dst.file != BRW_GENERAL_REGISTER_FILE));
if (need_tmp)
tmp = get_tmp(c);
{
const struct prog_src_register *src = &inst->SrcReg[argIndex];
struct brw_compile *p = &c->func;
- struct brw_reg const_reg;
- struct brw_reg const2_reg;
- const GLboolean relAddr = src->RelAddr;
+ struct brw_reg const_reg = c->current_const[argIndex].reg;
assert(argIndex < 3);
- if (c->current_const[argIndex].index != src->Index || relAddr) {
+ if (c->current_const[argIndex].index != src->Index) {
struct brw_reg addrReg = c->regs[PROGRAM_ADDRESS][0];
+ /* Keep track of the last constant loaded in this slot, for reuse. */
c->current_const[argIndex].index = src->Index;
#if 0
#endif
/* need to fetch the constant now */
brw_dp_READ_4_vs(p,
- c->current_const[argIndex].reg,/* writeback dest */
+ const_reg, /* writeback dest */
0, /* oword */
- relAddr, /* relative indexing? */
+ 0, /* relative indexing? */
addrReg, /* address register */
16 * src->Index, /* byte offset */
SURF_INDEX_VERT_CONST_BUFFER /* binding table index */
);
-
- if (relAddr) {
- /* second read */
- const2_reg = get_tmp(c);
-
- /* use upper half of address reg for second read */
- addrReg = stride(addrReg, 0, 4, 0);
- addrReg.subnr = 16;
-
- brw_dp_READ_4_vs(p,
- const2_reg, /* writeback dest */
- 1, /* oword */
- relAddr, /* relative indexing? */
- addrReg, /* address register */
- 16 * src->Index, /* byte offset */
- SURF_INDEX_VERT_CONST_BUFFER
- );
- }
}
- const_reg = c->current_const[argIndex].reg;
+ /* replicate lower four floats into upper half (to get XYZWXYZW) */
+ const_reg = stride(const_reg, 0, 4, 0);
+ const_reg.subnr = 0;
- if (relAddr) {
- /* merge the two Owords into the constant register */
- /* const_reg[7..4] = const2_reg[7..4] */
- brw_MOV(p,
- suboffset(stride(const_reg, 0, 4, 1), 4),
- suboffset(stride(const2_reg, 0, 4, 1), 4));
- release_tmp(c, const2_reg);
- }
- else {
- /* replicate lower four floats into upper half (to get XYZWXYZW) */
- const_reg = stride(const_reg, 0, 4, 0);
- const_reg.subnr = 0;
- }
+ return const_reg;
+}
+
+static struct brw_reg
+get_reladdr_constant(struct brw_vs_compile *c,
+ const struct prog_instruction *inst,
+ GLuint argIndex)
+{
+ const struct prog_src_register *src = &inst->SrcReg[argIndex];
+ struct brw_compile *p = &c->func;
+ struct brw_reg const_reg = c->current_const[argIndex].reg;
+ struct brw_reg const2_reg;
+ struct brw_reg addrReg = c->regs[PROGRAM_ADDRESS][0];
+
+ assert(argIndex < 3);
+
+ /* Can't reuse a reladdr constant load. */
+ c->current_const[argIndex].index = -1;
+
+ #if 0
+ printf(" fetch const[a0.x+%d] for arg %d into reg %d\n",
+ src->Index, argIndex, c->current_const[argIndex].reg.nr);
+#endif
+
+ /* fetch the first vec4 */
+ brw_dp_READ_4_vs(p,
+ const_reg, /* writeback dest */
+ 0, /* oword */
+ 1, /* relative indexing? */
+ addrReg, /* address register */
+ 16 * src->Index, /* byte offset */
+ SURF_INDEX_VERT_CONST_BUFFER /* binding table index */
+ );
+ /* second vec4 */
+ const2_reg = get_tmp(c);
+
+ /* use upper half of address reg for second read */
+ addrReg = stride(addrReg, 0, 4, 0);
+ addrReg.subnr = 16;
+
+ brw_dp_READ_4_vs(p,
+ const2_reg, /* writeback dest */
+ 1, /* oword */
+ 1, /* relative indexing? */
+ addrReg, /* address register */
+ 16 * src->Index, /* byte offset */
+ SURF_INDEX_VERT_CONST_BUFFER
+ );
+
+ /* merge the two Owords into the constant register */
+ /* const_reg[7..4] = const2_reg[7..4] */
+ brw_MOV(p,
+ suboffset(stride(const_reg, 0, 4, 1), 4),
+ suboffset(stride(const2_reg, 0, 4, 1), 4));
+ release_tmp(c, const2_reg);
return const_reg;
}
case PROGRAM_ENV_PARAM:
case PROGRAM_LOCAL_PARAM:
if (c->vp->use_const_buffer) {
- return get_constant(c, inst, argIndex);
+ if (!relAddr && c->constant_map[index] != -1) {
+ assert(c->regs[PROGRAM_STATE_VAR][c->constant_map[index]].nr != 0);
+ return c->regs[PROGRAM_STATE_VAR][c->constant_map[index]];
+ } else if (relAddr)
+ return get_reladdr_constant(c, inst, argIndex);
+ else
+ return get_constant(c, inst, argIndex);
}
else if (relAddr) {
return deref(c, c->regs[PROGRAM_STATE_VAR][0], index);
struct brw_reg pos = c->regs[PROGRAM_OUTPUT][VERT_RESULT_HPOS];
struct brw_reg ndc;
int eot;
- GLuint len_vertext_header = 2;
+ GLuint len_vertex_header = 2;
if (c->key.copy_edgeflag) {
brw_MOV(p,
get_reg(c, PROGRAM_INPUT, VERT_ATTRIB_EDGEFLAG));
}
- /* Build ndc coords */
- ndc = get_tmp(c);
- /* ndc = 1.0 / pos.w */
- emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL);
- /* ndc.xyz = pos * ndc */
- brw_MUL(p, brw_writemask(ndc, WRITEMASK_XYZ), pos, ndc);
+ if (intel->gen < 6) {
+ /* Build ndc coords */
+ ndc = get_tmp(c);
+ /* ndc = 1.0 / pos.w */
+ emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL);
+ /* ndc.xyz = pos * ndc */
+ brw_MUL(p, brw_writemask(ndc, WRITEMASK_XYZ), pos, ndc);
+ }
/* Update the header for point size, user clipping flags, and -ve rhw
* workaround.
* of zeros followed by two sets of NDC coordinates:
*/
brw_set_access_mode(p, BRW_ALIGN_1);
- brw_MOV(p, offset(m0, 2), ndc);
-
- if (intel->is_ironlake) {
- /* There are 20 DWs (D0-D19) in VUE vertex header on Ironlake */
- brw_MOV(p, offset(m0, 3), pos); /* a portion of vertex header */
- /* m4, m5 contain the distances from vertex to the user clip planeXXX.
- * Seems it is useless for us.
- * m6 is used for aligning, so that the remainder of vertex element is
- * reg-aligned.
- */
- brw_MOV(p, offset(m0, 7), pos); /* the remainder of vertex element */
- len_vertext_header = 6;
+
+ if (intel->gen >= 6) {
+ /* There are 16 DWs (D0-D15) in VUE header on Sandybridge:
+ * dword 0-3 (m1) of the header is indices, point width, clip flags.
+ * dword 4-7 (m2) is the 4D space position
+ * dword 8-15 (m3,m4) of the vertex header is the user clip distance.
+ * m5 is the first vertex data we fill, which is the vertex position.
+ */
+ brw_MOV(p, offset(m0, 2), pos);
+ brw_MOV(p, offset(m0, 5), pos);
+ len_vertex_header = 4;
+ } else if (intel->is_ironlake) {
+ /* There are 20 DWs (D0-D19) in VUE header on Ironlake:
+ * dword 0-3 (m1) of the header is indices, point width, clip flags.
+ * dword 4-7 (m2) is the ndc position (set above)
+ * dword 8-11 (m3) of the vertex header is the 4D space position
+ * dword 12-19 (m4,m5) of the vertex header is the user clip distance.
+ * m6 is a pad so that the vertex element data is aligned
+ * m7 is the first vertex data we fill, which is the vertex position.
+ */
+ brw_MOV(p, offset(m0, 2), ndc);
+ brw_MOV(p, offset(m0, 3), pos);
+ brw_MOV(p, offset(m0, 7), pos);
+ len_vertex_header = 6;
} else {
- brw_MOV(p, offset(m0, 3), pos);
- len_vertext_header = 2;
+ /* There are 8 dwords in VUE header pre-Ironlake:
+ * dword 0-3 (m1) is indices, point width, clip flags.
+ * dword 4-7 (m2) is ndc position (set above)
+ *
+ * dword 8-11 (m3) is the first vertex data, which we always have be the
+ * vertex position.
+ */
+ brw_MOV(p, offset(m0, 2), ndc);
+ brw_MOV(p, offset(m0, 3), pos);
+ len_vertex_header = 2;
}
eot = (c->first_overflow_output == 0);
c->r0, /* src */
0, /* allocate */
1, /* used */
- MIN2(c->nr_outputs + 1 + len_vertext_header, (BRW_MAX_MRF-1)), /* msg len */
+ MIN2(c->nr_outputs + 1 + len_vertex_header, (BRW_MAX_MRF-1)), /* msg len */
0, /* response len */
eot, /* eot */
eot, /* writes complete */
}
}
-
-/**
- * Called after code generation to resolve subroutine calls and the
- * END instruction.
- * \param end_inst points to brw code for END instruction
- * \param last_inst points to last instruction emitted before vertex write
- */
-static void
-post_vs_emit( struct brw_vs_compile *c,
- struct brw_instruction *end_inst,
- struct brw_instruction *last_inst )
-{
- GLint offset;
-
- brw_resolve_cals(&c->func);
-
- /* patch up the END code to jump past subroutines, etc */
- offset = last_inst - end_inst;
- if (offset > 1) {
- brw_set_src1(end_inst, brw_imm_d(offset * 16));
- } else {
- end_inst->header.opcode = BRW_OPCODE_NOP;
- }
-}
-
static GLboolean
accumulator_contains(struct brw_vs_compile *c, struct brw_reg val)
{
struct intel_context *intel = &brw->intel;
const GLuint nr_insns = c->vp->program.Base.NumInstructions;
GLuint insn, if_depth = 0, loop_depth = 0;
- GLuint end_offset = 0;
- struct brw_instruction *end_inst, *last_inst;
- struct brw_instruction *if_inst[MAX_IF_DEPTH], *loop_inst[MAX_LOOP_DEPTH];
+ struct brw_instruction *if_inst[MAX_IF_DEPTH], *loop_inst[MAX_LOOP_DEPTH] = { 0 };
const struct brw_indirect stack_index = brw_indirect(0, 0);
GLuint index;
GLuint file;
if (INTEL_DEBUG & DEBUG_VS) {
- _mesa_printf("vs-mesa:\n");
+ printf("vs-mesa:\n");
_mesa_print_program(&c->vp->program.Base);
- _mesa_printf("\n");
+ printf("\n");
}
brw_set_compression_control(p, BRW_COMPRESSION_NONE);
brw_set_access_mode(p, BRW_ALIGN_16);
-
- /* Message registers can't be read, so copy the output into GRF register
- if they are used in source registers */
+
for (insn = 0; insn < nr_insns; insn++) {
GLuint i;
struct prog_instruction *inst = &c->vp->program.Base.Instructions[insn];
+
+ /* Message registers can't be read, so copy the output into GRF
+ * register if they are used in source registers
+ */
for (i = 0; i < 3; i++) {
struct prog_src_register *src = &inst->SrcReg[i];
GLuint index = src->Index;
if (file == PROGRAM_OUTPUT && index != VERT_RESULT_HPOS)
c->output_regs[index].used_in_src = GL_TRUE;
}
+
+ switch (inst->Opcode) {
+ case OPCODE_CAL:
+ case OPCODE_RET:
+ c->needs_stack = GL_TRUE;
+ break;
+ default:
+ break;
+ }
}
/* Static register allocation
*/
brw_vs_alloc_regs(c);
- brw_MOV(p, get_addr_reg(stack_index), brw_address(c->stack));
+
+ if (c->needs_stack)
+ brw_MOV(p, get_addr_reg(stack_index), brw_address(c->stack));
for (insn = 0; insn < nr_insns; insn++) {
/* patch all the BREAK/CONT instructions from last BEGINLOOP */
while (inst0 > loop_inst[loop_depth]) {
inst0--;
- if (inst0->header.opcode == BRW_OPCODE_BREAK) {
+ if (inst0->header.opcode == BRW_OPCODE_BREAK &&
+ inst0->bits3.if_else.jump_count == 0) {
inst0->bits3.if_else.jump_count = br * (inst1 - inst0 + 1);
inst0->bits3.if_else.pop_count = 0;
}
- else if (inst0->header.opcode == BRW_OPCODE_CONTINUE) {
+ else if (inst0->header.opcode == BRW_OPCODE_CONTINUE &&
+ inst0->bits3.if_else.jump_count == 0) {
inst0->bits3.if_else.jump_count = br * (inst1 - inst0);
inst0->bits3.if_else.pop_count = 0;
}
brw_MOV(p, brw_ip_reg(), deref_1d(stack_index, 0));
brw_set_access_mode(p, BRW_ALIGN_16);
break;
- case OPCODE_END:
- end_offset = p->nr_insn;
- /* this instruction will get patched later to jump past subroutine
- * code, etc.
- */
- brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));
+ case OPCODE_END:
+ emit_vertex_write(c);
break;
case OPCODE_PRINT:
/* no-op */
release_tmps(c);
}
- end_inst = &p->store[end_offset];
- last_inst = &p->store[p->nr_insn];
-
- /* The END instruction will be patched to jump to this code */
- emit_vertex_write(c);
+ brw_resolve_cals(p);
- post_vs_emit(c, end_inst, last_inst);
+ brw_optimize(p);
if (INTEL_DEBUG & DEBUG_VS) {
int i;
- _mesa_printf("vs-native:\n");
+ printf("vs-native:\n");
for (i = 0; i < p->nr_insn; i++)
brw_disasm(stderr, &p->store[i]);
- _mesa_printf("\n");
+ printf("\n");
}
}
projects / mesa.git / blobdiff