#include "glsl/ir.h"
#include "glsl/ir_optimization.h"
#include "glsl/nir/glsl_to_nir.h"
+#include "main/shaderimage.h"
#include "program/prog_to_nir.h"
#include "brw_fs.h"
+#include "brw_fs_surface_builder.h"
+#include "brw_vec4_gs_visitor.h"
#include "brw_nir.h"
+#include "brw_fs_surface_builder.h"
+#include "brw_vec4_gs_visitor.h"
+
+using namespace brw;
+using namespace brw::surface_access;
void
fs_visitor::emit_nir_code()
{
- nir_shader *nir = prog->nir;
-
/* emit the arrays used for inputs and outputs - load/store intrinsics will
* be converted to reads/writes of these arrays
*/
-
- if (nir->num_inputs > 0) {
- nir_inputs = vgrf(nir->num_inputs);
- nir_setup_inputs(nir);
- }
-
- if (nir->num_outputs > 0) {
- nir_outputs = vgrf(nir->num_outputs);
- nir_setup_outputs(nir);
- }
-
- if (nir->num_uniforms > 0) {
- nir_setup_uniforms(nir);
- }
-
- nir_emit_system_values(nir);
-
- nir_globals = ralloc_array(mem_ctx, fs_reg, nir->reg_alloc);
- foreach_list_typed(nir_register, reg, node, &nir->registers) {
- unsigned array_elems =
- reg->num_array_elems == 0 ? 1 : reg->num_array_elems;
- unsigned size = array_elems * reg->num_components;
- nir_globals[reg->index] = vgrf(size);
- }
+ nir_setup_inputs();
+ nir_setup_outputs();
+ nir_setup_uniforms();
+ nir_emit_system_values();
/* get the main function and emit it */
nir_foreach_overload(nir, overload) {
}
void
-fs_visitor::nir_setup_inputs(nir_shader *shader)
+fs_visitor::nir_setup_inputs()
{
- foreach_list_typed(nir_variable, var, node, &shader->inputs) {
- enum brw_reg_type type = brw_type_for_base_type(var->type);
- fs_reg input = offset(nir_inputs, var->data.driver_location);
+ if (stage != MESA_SHADER_FRAGMENT)
+ return;
+
+ nir_inputs = bld.vgrf(BRW_REGISTER_TYPE_F, nir->num_inputs);
+
+ nir_foreach_variable(var, &nir->inputs) {
+ fs_reg input = offset(nir_inputs, bld, var->data.driver_location);
fs_reg reg;
- switch (stage) {
- case MESA_SHADER_VERTEX: {
- /* Our ATTR file is indexed by VERT_ATTRIB_*, which is the value
- * stored in nir_variable::location.
- *
- * However, NIR's load_input intrinsics use a different index - an
- * offset into a single contiguous array containing all inputs.
- * This index corresponds to the nir_variable::driver_location field.
- *
- * So, we need to copy from fs_reg(ATTR, var->location) to
- * offset(nir_inputs, var->data.driver_location).
- */
- unsigned components = var->type->without_array()->components();
- unsigned array_length = var->type->is_array() ? var->type->length : 1;
- for (unsigned i = 0; i < array_length; i++) {
- for (unsigned j = 0; j < components; j++) {
- emit(MOV(retype(offset(input, components * i + j), type),
- offset(fs_reg(ATTR, var->data.location + i, type), j)));
- }
- }
- break;
- }
- case MESA_SHADER_GEOMETRY:
- case MESA_SHADER_COMPUTE:
- unreachable("fs_visitor not used for these stages yet.");
- break;
- case MESA_SHADER_FRAGMENT:
- if (var->data.location == VARYING_SLOT_POS) {
- reg = *emit_fragcoord_interpolation(var->data.pixel_center_integer,
- var->data.origin_upper_left);
- emit_percomp(MOV(input, reg), 0xF);
- } else {
- emit_general_interpolation(input, var->name, var->type,
- (glsl_interp_qualifier) var->data.interpolation,
- var->data.location, var->data.centroid,
- var->data.sample);
- }
- break;
+ if (var->data.location == VARYING_SLOT_POS) {
+ reg = *emit_fragcoord_interpolation(var->data.pixel_center_integer,
+ var->data.origin_upper_left);
+ emit_percomp(bld, fs_inst(BRW_OPCODE_MOV, bld.dispatch_width(),
+ input, reg), 0xF);
+ } else if (var->data.location == VARYING_SLOT_LAYER) {
+ struct brw_reg reg = suboffset(interp_reg(VARYING_SLOT_LAYER, 1), 3);
+ reg.type = BRW_REGISTER_TYPE_D;
+ bld.emit(FS_OPCODE_CINTERP, retype(input, BRW_REGISTER_TYPE_D), reg);
+ } else if (var->data.location == VARYING_SLOT_VIEWPORT) {
+ struct brw_reg reg = suboffset(interp_reg(VARYING_SLOT_VIEWPORT, 2), 3);
+ reg.type = BRW_REGISTER_TYPE_D;
+ bld.emit(FS_OPCODE_CINTERP, retype(input, BRW_REGISTER_TYPE_D), reg);
+ } else {
+ emit_general_interpolation(input, var->name, var->type,
+ (glsl_interp_qualifier) var->data.interpolation,
+ var->data.location, var->data.centroid,
+ var->data.sample);
}
}
}
void
-fs_visitor::nir_setup_outputs(nir_shader *shader)
+fs_visitor::nir_setup_outputs()
{
brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
- foreach_list_typed(nir_variable, var, node, &shader->outputs) {
- fs_reg reg = offset(nir_outputs, var->data.driver_location);
+ nir_outputs = bld.vgrf(BRW_REGISTER_TYPE_F, nir->num_outputs);
+
+ nir_foreach_variable(var, &nir->outputs) {
+ fs_reg reg = offset(nir_outputs, bld, var->data.driver_location);
- int vector_elements =
- var->type->is_array() ? var->type->fields.array->vector_elements
- : var->type->vector_elements;
+ int vector_elements = var->type->without_array()->vector_elements;
- if (stage == MESA_SHADER_VERTEX) {
- for (int i = 0; i < ALIGN(type_size(var->type), 4) / 4; i++) {
+ switch (stage) {
+ case MESA_SHADER_VERTEX:
+ case MESA_SHADER_GEOMETRY:
+ for (unsigned int i = 0; i < ALIGN(type_size_scalar(var->type), 4) / 4; i++) {
int output = var->data.location + i;
- this->outputs[output] = offset(reg, 4 * i);
+ this->outputs[output] = offset(reg, bld, 4 * i);
this->output_components[output] = vector_elements;
}
- } else if (var->data.index > 0) {
- assert(var->data.location == FRAG_RESULT_DATA0);
- assert(var->data.index == 1);
- this->dual_src_output = reg;
- this->do_dual_src = true;
- } else if (var->data.location == FRAG_RESULT_COLOR) {
- /* Writing gl_FragColor outputs to all color regions. */
- for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) {
- this->outputs[i] = reg;
- this->output_components[i] = 4;
- }
- } else if (var->data.location == FRAG_RESULT_DEPTH) {
- this->frag_depth = reg;
- } else if (var->data.location == FRAG_RESULT_SAMPLE_MASK) {
- this->sample_mask = reg;
- } else {
- /* gl_FragData or a user-defined FS output */
- assert(var->data.location >= FRAG_RESULT_DATA0 &&
- var->data.location < FRAG_RESULT_DATA0 + BRW_MAX_DRAW_BUFFERS);
-
- /* General color output. */
- for (unsigned int i = 0; i < MAX2(1, var->type->length); i++) {
- int output = var->data.location - FRAG_RESULT_DATA0 + i;
- this->outputs[output] = offset(reg, vector_elements * i);
- this->output_components[output] = vector_elements;
+ break;
+ case MESA_SHADER_FRAGMENT:
+ if (var->data.index > 0) {
+ assert(var->data.location == FRAG_RESULT_DATA0);
+ assert(var->data.index == 1);
+ this->dual_src_output = reg;
+ this->do_dual_src = true;
+ } else if (var->data.location == FRAG_RESULT_COLOR) {
+ /* Writing gl_FragColor outputs to all color regions. */
+ for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) {
+ this->outputs[i] = reg;
+ this->output_components[i] = 4;
+ }
+ } else if (var->data.location == FRAG_RESULT_DEPTH) {
+ this->frag_depth = reg;
+ } else if (var->data.location == FRAG_RESULT_STENCIL) {
+ this->frag_stencil = reg;
+ } else if (var->data.location == FRAG_RESULT_SAMPLE_MASK) {
+ this->sample_mask = reg;
+ } else {
+ /* gl_FragData or a user-defined FS output */
+ assert(var->data.location >= FRAG_RESULT_DATA0 &&
+ var->data.location < FRAG_RESULT_DATA0+BRW_MAX_DRAW_BUFFERS);
+
+ /* General color output. */
+ for (unsigned int i = 0; i < MAX2(1, var->type->length); i++) {
+ int output = var->data.location - FRAG_RESULT_DATA0 + i;
+ this->outputs[output] = offset(reg, bld, vector_elements * i);
+ this->output_components[output] = vector_elements;
+ }
}
+ break;
+ default:
+ unreachable("unhandled shader stage");
}
}
}
void
-fs_visitor::nir_setup_uniforms(nir_shader *shader)
+fs_visitor::nir_setup_uniforms()
{
- uniforms = shader->num_uniforms;
- num_direct_uniforms = shader->num_direct_uniforms;
-
- /* We split the uniform register file in half. The first half is
- * entirely direct uniforms. The second half is indirect.
- */
- param_size[0] = num_direct_uniforms;
- if (shader->num_uniforms > num_direct_uniforms)
- param_size[num_direct_uniforms] = shader->num_uniforms - num_direct_uniforms;
-
if (dispatch_width != 8)
return;
- if (shader_prog) {
- foreach_list_typed(nir_variable, var, node, &shader->uniforms) {
- /* UBO's and atomics don't take up space in the uniform file */
- if (var->interface_type != NULL || var->type->contains_atomic())
- continue;
+ uniforms = nir->num_uniforms;
- if (strncmp(var->name, "gl_", 3) == 0)
- nir_setup_builtin_uniform(var);
- else
- nir_setup_uniform(var);
- }
- } else {
- /* prog_to_nir doesn't create uniform variables; set param up directly. */
- for (unsigned p = 0; p < prog->Parameters->NumParameters; p++) {
- for (unsigned int i = 0; i < 4; i++) {
- stage_prog_data->param[4 * p + i] =
- &prog->Parameters->ParameterValues[p][i];
- }
- }
- }
-}
-
-void
-fs_visitor::nir_setup_uniform(nir_variable *var)
-{
- int namelen = strlen(var->name);
-
- /* The data for our (non-builtin) uniforms is stored in a series of
- * gl_uniform_driver_storage structs for each subcomponent that
- * glGetUniformLocation() could name. We know it's been set up in the
- * same order we'd walk the type, so walk the list of storage and find
- * anything with our name, or the prefix of a component that starts with
- * our name.
- */
- unsigned index = var->data.driver_location;
- for (unsigned u = 0; u < shader_prog->NumUserUniformStorage; u++) {
- struct gl_uniform_storage *storage = &shader_prog->UniformStorage[u];
-
- if (strncmp(var->name, storage->name, namelen) != 0 ||
- (storage->name[namelen] != 0 &&
- storage->name[namelen] != '.' &&
- storage->name[namelen] != '[')) {
+ nir_foreach_variable(var, &nir->uniforms) {
+ /* UBO's and atomics don't take up space in the uniform file */
+ if (var->interface_type != NULL || var->type->contains_atomic())
continue;
- }
-
- unsigned slots = storage->type->component_slots();
- if (storage->array_elements)
- slots *= storage->array_elements;
-
- for (unsigned i = 0; i < slots; i++) {
- stage_prog_data->param[index++] = &storage->storage[i];
- }
- }
- /* Make sure we actually initialized the right amount of stuff here. */
- assert(var->data.driver_location + var->type->component_slots() == index);
-}
-
-void
-fs_visitor::nir_setup_builtin_uniform(nir_variable *var)
-{
- const nir_state_slot *const slots = var->state_slots;
- assert(var->state_slots != NULL);
-
- unsigned uniform_index = var->data.driver_location;
- for (unsigned int i = 0; i < var->num_state_slots; i++) {
- /* This state reference has already been setup by ir_to_mesa, but we'll
- * get the same index back here.
- */
- int index = _mesa_add_state_reference(this->prog->Parameters,
- (gl_state_index *)slots[i].tokens);
-
- /* Add each of the unique swizzles of the element as a parameter.
- * This'll end up matching the expected layout of the
- * array/matrix/structure we're trying to fill in.
- */
- int last_swiz = -1;
- for (unsigned int j = 0; j < 4; j++) {
- int swiz = GET_SWZ(slots[i].swizzle, j);
- if (swiz == last_swiz)
- break;
- last_swiz = swiz;
-
- stage_prog_data->param[uniform_index++] =
- &prog->Parameters->ParameterValues[index][swiz];
- }
+ if (type_size_scalar(var->type) > 0)
+ param_size[var->data.driver_location] = type_size_scalar(var->type);
}
}
*reg = *v->emit_vs_system_value(SYSTEM_VALUE_INSTANCE_ID);
break;
+ case nir_intrinsic_load_invocation_id:
+ assert(v->stage == MESA_SHADER_GEOMETRY);
+ reg = &v->nir_system_values[SYSTEM_VALUE_INVOCATION_ID];
+ if (reg->file == BAD_FILE) {
+ const fs_builder abld = v->bld.annotate("gl_InvocationID", NULL);
+ fs_reg g1(retype(brw_vec8_grf(1, 0), BRW_REGISTER_TYPE_UD));
+ fs_reg iid = abld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.SHR(iid, g1, fs_reg(27u));
+ *reg = iid;
+ }
+ break;
+
case nir_intrinsic_load_sample_pos:
assert(v->stage == MESA_SHADER_FRAGMENT);
reg = &v->nir_system_values[SYSTEM_VALUE_SAMPLE_POS];
BRW_REGISTER_TYPE_D));
break;
+ case nir_intrinsic_load_local_invocation_id:
+ assert(v->stage == MESA_SHADER_COMPUTE);
+ reg = &v->nir_system_values[SYSTEM_VALUE_LOCAL_INVOCATION_ID];
+ if (reg->file == BAD_FILE)
+ *reg = *v->emit_cs_local_invocation_id_setup();
+ break;
+
+ case nir_intrinsic_load_work_group_id:
+ assert(v->stage == MESA_SHADER_COMPUTE);
+ reg = &v->nir_system_values[SYSTEM_VALUE_WORK_GROUP_ID];
+ if (reg->file == BAD_FILE)
+ *reg = *v->emit_cs_work_group_id_setup();
+ break;
+
default:
break;
}
}
void
-fs_visitor::nir_emit_system_values(nir_shader *shader)
+fs_visitor::nir_emit_system_values()
{
nir_system_values = ralloc_array(mem_ctx, fs_reg, SYSTEM_VALUE_MAX);
- nir_foreach_overload(shader, overload) {
+ nir_foreach_overload(nir, overload) {
assert(strcmp(overload->function->name, "main") == 0);
assert(overload->impl);
nir_foreach_block(overload->impl, emit_system_values_block, this);
unsigned array_elems =
reg->num_array_elems == 0 ? 1 : reg->num_array_elems;
unsigned size = array_elems * reg->num_components;
- nir_locals[reg->index] = vgrf(size);
+ nir_locals[reg->index] = bld.vgrf(BRW_REGISTER_TYPE_F, size);
}
+ nir_ssa_values = reralloc(mem_ctx, nir_ssa_values, fs_reg,
+ impl->ssa_alloc);
+
nir_emit_cf_list(&impl->body);
}
fs_visitor::nir_emit_if(nir_if *if_stmt)
{
/* first, put the condition into f0 */
- fs_inst *inst = emit(MOV(reg_null_d,
+ fs_inst *inst = bld.MOV(bld.null_reg_d(),
retype(get_nir_src(if_stmt->condition),
- BRW_REGISTER_TYPE_D)));
+ BRW_REGISTER_TYPE_D));
inst->conditional_mod = BRW_CONDITIONAL_NZ;
- emit(IF(BRW_PREDICATE_NORMAL));
+ bld.IF(BRW_PREDICATE_NORMAL);
nir_emit_cf_list(&if_stmt->then_list);
/* note: if the else is empty, dead CF elimination will remove it */
- emit(BRW_OPCODE_ELSE);
+ bld.emit(BRW_OPCODE_ELSE);
nir_emit_cf_list(&if_stmt->else_list);
- emit(BRW_OPCODE_ENDIF);
-
- if (!try_replace_with_sel() && devinfo->gen < 6) {
- no16("Can't support (non-uniform) control flow on SIMD16\n");
- }
+ bld.emit(BRW_OPCODE_ENDIF);
}
void
fs_visitor::nir_emit_loop(nir_loop *loop)
{
- if (devinfo->gen < 6) {
- no16("Can't support (non-uniform) control flow on SIMD16\n");
- }
-
- emit(BRW_OPCODE_DO);
+ bld.emit(BRW_OPCODE_DO);
nir_emit_cf_list(&loop->body);
- emit(BRW_OPCODE_WHILE);
+ bld.emit(BRW_OPCODE_WHILE);
}
void
void
fs_visitor::nir_emit_instr(nir_instr *instr)
{
- this->base_ir = instr;
+ const fs_builder abld = bld.annotate(NULL, instr);
switch (instr->type) {
case nir_instr_type_alu:
- nir_emit_alu(nir_instr_as_alu(instr));
+ nir_emit_alu(abld, nir_instr_as_alu(instr));
break;
case nir_instr_type_intrinsic:
- nir_emit_intrinsic(nir_instr_as_intrinsic(instr));
+ nir_emit_intrinsic(abld, nir_instr_as_intrinsic(instr));
break;
case nir_instr_type_tex:
- nir_emit_texture(nir_instr_as_tex(instr));
+ nir_emit_texture(abld, nir_instr_as_tex(instr));
break;
case nir_instr_type_load_const:
- /* We can hit these, but we do nothing now and use them as
- * immediates later.
- */
+ nir_emit_load_const(abld, nir_instr_as_load_const(instr));
+ break;
+
+ case nir_instr_type_ssa_undef:
+ nir_emit_undef(abld, nir_instr_as_ssa_undef(instr));
break;
case nir_instr_type_jump:
- nir_emit_jump(nir_instr_as_jump(instr));
+ nir_emit_jump(abld, nir_instr_as_jump(instr));
break;
default:
unreachable("unknown instruction type");
}
-
- this->base_ir = NULL;
-}
-
-static brw_reg_type
-brw_type_for_nir_type(nir_alu_type type)
-{
- switch (type) {
- case nir_type_unsigned:
- return BRW_REGISTER_TYPE_UD;
- case nir_type_bool:
- case nir_type_int:
- return BRW_REGISTER_TYPE_D;
- case nir_type_float:
- return BRW_REGISTER_TYPE_F;
- default:
- unreachable("unknown type");
- }
-
- return BRW_REGISTER_TYPE_F;
}
bool
fs_visitor::optimize_frontfacing_ternary(nir_alu_instr *instr,
const fs_reg &result)
{
- if (instr->src[0].src.is_ssa ||
- !instr->src[0].src.reg.reg ||
- !instr->src[0].src.reg.reg->parent_instr)
- return false;
-
- if (instr->src[0].src.reg.reg->parent_instr->type !=
- nir_instr_type_intrinsic)
+ if (!instr->src[0].src.is_ssa ||
+ instr->src[0].src.ssa->parent_instr->type != nir_instr_type_intrinsic)
return false;
nir_intrinsic_instr *src0 =
- nir_instr_as_intrinsic(instr->src[0].src.reg.reg->parent_instr);
+ nir_instr_as_intrinsic(instr->src[0].src.ssa->parent_instr);
if (src0->intrinsic != nir_intrinsic_load_front_face)
return false;
tmp.subreg_offset = 2;
tmp.stride = 2;
- fs_inst *or_inst = emit(OR(tmp, g0, fs_reg(0x3f80)));
+ fs_inst *or_inst = bld.OR(tmp, g0, fs_reg(0x3f80));
or_inst->src[1].type = BRW_REGISTER_TYPE_UW;
tmp.type = BRW_REGISTER_TYPE_D;
g1_6.negate = true;
}
- emit(OR(tmp, g1_6, fs_reg(0x3f800000)));
+ bld.OR(tmp, g1_6, fs_reg(0x3f800000));
}
- emit(AND(retype(result, BRW_REGISTER_TYPE_D), tmp, fs_reg(0xbf800000)));
+ bld.AND(retype(result, BRW_REGISTER_TYPE_D), tmp, fs_reg(0xbf800000));
return true;
}
void
-fs_visitor::nir_emit_alu(nir_alu_instr *instr)
+fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
{
struct brw_wm_prog_key *fs_key = (struct brw_wm_prog_key *) this->key;
fs_inst *inst;
if (!instr->src[i].src.is_ssa &&
instr->dest.dest.reg.reg == instr->src[i].src.reg.reg) {
need_extra_copy = true;
- temp = retype(vgrf(4), result.type);
+ temp = bld.vgrf(result.type, 4);
break;
}
}
continue;
if (instr->op == nir_op_imov || instr->op == nir_op_fmov) {
- inst = emit(MOV(offset(temp, i),
- offset(op[0], instr->src[0].swizzle[i])));
+ inst = bld.MOV(offset(temp, bld, i),
+ offset(op[0], bld, instr->src[0].swizzle[i]));
} else {
- inst = emit(MOV(offset(temp, i),
- offset(op[i], instr->src[i].swizzle[0])));
+ inst = bld.MOV(offset(temp, bld, i),
+ offset(op[i], bld, instr->src[i].swizzle[0]));
}
inst->saturate = instr->dest.saturate;
}
if (!(instr->dest.write_mask & (1 << i)))
continue;
- emit(MOV(offset(result, i), offset(temp, i)));
+ bld.MOV(offset(result, bld, i), offset(temp, bld, i));
}
}
return;
assert(_mesa_bitcount(instr->dest.write_mask) == 1);
channel = ffs(instr->dest.write_mask) - 1;
- result = offset(result, channel);
+ result = offset(result, bld, channel);
}
for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++) {
assert(nir_op_infos[instr->op].input_sizes[i] < 2);
- op[i] = offset(op[i], instr->src[i].swizzle[channel]);
+ op[i] = offset(op[i], bld, instr->src[i].swizzle[channel]);
}
switch (instr->op) {
case nir_op_i2f:
case nir_op_u2f:
- inst = emit(MOV(result, op[0]));
+ inst = bld.MOV(result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_f2i:
case nir_op_f2u:
- emit(MOV(result, op[0]));
+ bld.MOV(result, op[0]);
break;
case nir_op_fsign: {
* Predicated OR ORs 1.0 (0x3f800000) with the sign bit if val is not
* zero.
*/
- emit(CMP(reg_null_f, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ));
+ bld.CMP(bld.null_reg_f(), op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ);
fs_reg result_int = retype(result, BRW_REGISTER_TYPE_UD);
op[0].type = BRW_REGISTER_TYPE_UD;
result.type = BRW_REGISTER_TYPE_UD;
- emit(AND(result_int, op[0], fs_reg(0x80000000u)));
+ bld.AND(result_int, op[0], fs_reg(0x80000000u));
- inst = emit(OR(result_int, result_int, fs_reg(0x3f800000u)));
+ inst = bld.OR(result_int, result_int, fs_reg(0x3f800000u));
inst->predicate = BRW_PREDICATE_NORMAL;
if (instr->dest.saturate) {
- inst = emit(MOV(result, result));
+ inst = bld.MOV(result, result);
inst->saturate = true;
}
break;
* -> non-negative val generates 0x00000000.
* Predicated OR sets 1 if val is positive.
*/
- emit(CMP(reg_null_d, op[0], fs_reg(0), BRW_CONDITIONAL_G));
- emit(ASR(result, op[0], fs_reg(31)));
- inst = emit(OR(result, result, fs_reg(1)));
+ bld.CMP(bld.null_reg_d(), op[0], fs_reg(0), BRW_CONDITIONAL_G);
+ bld.ASR(result, op[0], fs_reg(31));
+ inst = bld.OR(result, result, fs_reg(1));
inst->predicate = BRW_PREDICATE_NORMAL;
break;
case nir_op_frcp:
- inst = emit_math(SHADER_OPCODE_RCP, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_RCP, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fexp2:
- inst = emit_math(SHADER_OPCODE_EXP2, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_EXP2, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_flog2:
- inst = emit_math(SHADER_OPCODE_LOG2, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_LOG2, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
- case nir_op_fexp:
- case nir_op_flog:
- unreachable("not reached: should be handled by ir_explog_to_explog2");
-
case nir_op_fsin:
- inst = emit_math(SHADER_OPCODE_SIN, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_SIN, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fcos:
- inst = emit_math(SHADER_OPCODE_COS, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_COS, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddx:
if (fs_key->high_quality_derivatives) {
- inst = emit(FS_OPCODE_DDX_FINE, result, op[0]);
+ inst = bld.emit(FS_OPCODE_DDX_FINE, result, op[0]);
} else {
- inst = emit(FS_OPCODE_DDX_COARSE, result, op[0]);
+ inst = bld.emit(FS_OPCODE_DDX_COARSE, result, op[0]);
}
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddx_fine:
- inst = emit(FS_OPCODE_DDX_FINE, result, op[0]);
+ inst = bld.emit(FS_OPCODE_DDX_FINE, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddx_coarse:
- inst = emit(FS_OPCODE_DDX_COARSE, result, op[0]);
+ inst = bld.emit(FS_OPCODE_DDX_COARSE, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddy:
if (fs_key->high_quality_derivatives) {
- inst = emit(FS_OPCODE_DDY_FINE, result, op[0],
- fs_reg(fs_key->render_to_fbo));
+ inst = bld.emit(FS_OPCODE_DDY_FINE, result, op[0],
+ fs_reg(fs_key->render_to_fbo));
} else {
- inst = emit(FS_OPCODE_DDY_COARSE, result, op[0],
- fs_reg(fs_key->render_to_fbo));
+ inst = bld.emit(FS_OPCODE_DDY_COARSE, result, op[0],
+ fs_reg(fs_key->render_to_fbo));
}
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddy_fine:
- inst = emit(FS_OPCODE_DDY_FINE, result, op[0],
- fs_reg(fs_key->render_to_fbo));
+ inst = bld.emit(FS_OPCODE_DDY_FINE, result, op[0],
+ fs_reg(fs_key->render_to_fbo));
inst->saturate = instr->dest.saturate;
break;
case nir_op_fddy_coarse:
- inst = emit(FS_OPCODE_DDY_COARSE, result, op[0],
- fs_reg(fs_key->render_to_fbo));
+ inst = bld.emit(FS_OPCODE_DDY_COARSE, result, op[0],
+ fs_reg(fs_key->render_to_fbo));
inst->saturate = instr->dest.saturate;
break;
case nir_op_fadd:
case nir_op_iadd:
- inst = emit(ADD(result, op[0], op[1]));
+ inst = bld.ADD(result, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fmul:
- inst = emit(MUL(result, op[0], op[1]));
+ inst = bld.MUL(result, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
- case nir_op_imul: {
- if (devinfo->gen >= 8) {
- emit(MUL(result, op[0], op[1]));
- break;
- } else {
- nir_const_value *value0 = nir_src_as_const_value(instr->src[0].src);
- nir_const_value *value1 = nir_src_as_const_value(instr->src[1].src);
-
- if (value0 && value0->u[0] < (1 << 16)) {
- if (devinfo->gen < 7) {
- emit(MUL(result, op[0], op[1]));
- } else {
- emit(MUL(result, op[1], op[0]));
- }
- break;
- } else if (value1 && value1->u[0] < (1 << 16)) {
- if (devinfo->gen < 7) {
- emit(MUL(result, op[1], op[0]));
- } else {
- emit(MUL(result, op[0], op[1]));
- }
- break;
- }
- }
-
- if (devinfo->gen >= 7)
- no16("SIMD16 explicit accumulator operands unsupported\n");
-
- struct brw_reg acc = retype(brw_acc_reg(dispatch_width), result.type);
-
- emit(MUL(acc, op[0], op[1]));
- emit(MACH(reg_null_d, op[0], op[1]));
- emit(MOV(result, fs_reg(acc)));
+ case nir_op_imul:
+ bld.MUL(result, op[0], op[1]);
break;
- }
case nir_op_imul_high:
- case nir_op_umul_high: {
- if (devinfo->gen >= 7)
- no16("SIMD16 explicit accumulator operands unsupported\n");
-
- struct brw_reg acc = retype(brw_acc_reg(dispatch_width), result.type);
-
- fs_inst *mul = emit(MUL(acc, op[0], op[1]));
- emit(MACH(result, op[0], op[1]));
-
- /* Until Gen8, integer multiplies read 32-bits from one source, and
- * 16-bits from the other, and relying on the MACH instruction to
- * generate the high bits of the result.
- *
- * On Gen8, the multiply instruction does a full 32x32-bit multiply,
- * but in order to do a 64x64-bit multiply we have to simulate the
- * previous behavior and then use a MACH instruction.
- *
- * FINISHME: Don't use source modifiers on src1.
- */
- if (devinfo->gen >= 8) {
- assert(mul->src[1].type == BRW_REGISTER_TYPE_D ||
- mul->src[1].type == BRW_REGISTER_TYPE_UD);
- if (mul->src[1].type == BRW_REGISTER_TYPE_D) {
- mul->src[1].type = BRW_REGISTER_TYPE_W;
- mul->src[1].stride = 2;
- } else {
- mul->src[1].type = BRW_REGISTER_TYPE_UW;
- mul->src[1].stride = 2;
- }
- }
+ case nir_op_umul_high:
+ bld.emit(SHADER_OPCODE_MULH, result, op[0], op[1]);
break;
- }
case nir_op_idiv:
case nir_op_udiv:
- emit_math(SHADER_OPCODE_INT_QUOTIENT, result, op[0], op[1]);
+ bld.emit(SHADER_OPCODE_INT_QUOTIENT, result, op[0], op[1]);
break;
- case nir_op_uadd_carry: {
- if (devinfo->gen >= 7)
- no16("SIMD16 explicit accumulator operands unsupported\n");
+ case nir_op_uadd_carry:
+ unreachable("Should have been lowered by carry_to_arith().");
- struct brw_reg acc = retype(brw_acc_reg(dispatch_width),
- BRW_REGISTER_TYPE_UD);
-
- emit(ADDC(reg_null_ud, op[0], op[1]));
- emit(MOV(result, fs_reg(acc)));
- break;
- }
-
- case nir_op_usub_borrow: {
- if (devinfo->gen >= 7)
- no16("SIMD16 explicit accumulator operands unsupported\n");
-
- struct brw_reg acc = retype(brw_acc_reg(dispatch_width),
- BRW_REGISTER_TYPE_UD);
-
- emit(SUBB(reg_null_ud, op[0], op[1]));
- emit(MOV(result, fs_reg(acc)));
- break;
- }
+ case nir_op_usub_borrow:
+ unreachable("Should have been lowered by borrow_to_arith().");
case nir_op_umod:
- emit_math(SHADER_OPCODE_INT_REMAINDER, result, op[0], op[1]);
+ bld.emit(SHADER_OPCODE_INT_REMAINDER, result, op[0], op[1]);
break;
case nir_op_flt:
case nir_op_ilt:
case nir_op_ult:
- emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_L));
+ bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_L);
break;
case nir_op_fge:
case nir_op_ige:
case nir_op_uge:
- emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_GE));
+ bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_GE);
break;
case nir_op_feq:
case nir_op_ieq:
- emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_Z));
+ bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_Z);
break;
case nir_op_fne:
case nir_op_ine:
- emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_NZ));
+ bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_NZ);
break;
case nir_op_inot:
if (devinfo->gen >= 8) {
- resolve_source_modifiers(&op[0]);
+ op[0] = resolve_source_modifiers(op[0]);
}
- emit(NOT(result, op[0]));
+ bld.NOT(result, op[0]);
break;
case nir_op_ixor:
if (devinfo->gen >= 8) {
- resolve_source_modifiers(&op[0]);
- resolve_source_modifiers(&op[1]);
+ op[0] = resolve_source_modifiers(op[0]);
+ op[1] = resolve_source_modifiers(op[1]);
}
- emit(XOR(result, op[0], op[1]));
+ bld.XOR(result, op[0], op[1]);
break;
case nir_op_ior:
if (devinfo->gen >= 8) {
- resolve_source_modifiers(&op[0]);
- resolve_source_modifiers(&op[1]);
+ op[0] = resolve_source_modifiers(op[0]);
+ op[1] = resolve_source_modifiers(op[1]);
}
- emit(OR(result, op[0], op[1]));
+ bld.OR(result, op[0], op[1]);
break;
case nir_op_iand:
if (devinfo->gen >= 8) {
- resolve_source_modifiers(&op[0]);
- resolve_source_modifiers(&op[1]);
+ op[0] = resolve_source_modifiers(op[0]);
+ op[1] = resolve_source_modifiers(op[1]);
}
- emit(AND(result, op[0], op[1]));
+ bld.AND(result, op[0], op[1]);
break;
case nir_op_fdot2:
unreachable("not reached: should be handled by ldexp_to_arith()");
case nir_op_fsqrt:
- inst = emit_math(SHADER_OPCODE_SQRT, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_SQRT, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_frsq:
- inst = emit_math(SHADER_OPCODE_RSQ, result, op[0]);
+ inst = bld.emit(SHADER_OPCODE_RSQ, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_b2i:
- emit(AND(result, op[0], fs_reg(1)));
- break;
case nir_op_b2f:
- emit(AND(retype(result, BRW_REGISTER_TYPE_UD), op[0], fs_reg(0x3f800000u)));
+ bld.MOV(result, negate(op[0]));
break;
case nir_op_f2b:
- emit(CMP(result, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ));
+ bld.CMP(result, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ);
break;
case nir_op_i2b:
- emit(CMP(result, op[0], fs_reg(0), BRW_CONDITIONAL_NZ));
+ bld.CMP(result, op[0], fs_reg(0), BRW_CONDITIONAL_NZ);
break;
case nir_op_ftrunc:
- inst = emit(RNDZ(result, op[0]));
+ inst = bld.RNDZ(result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fceil: {
op[0].negate = !op[0].negate;
fs_reg temp = vgrf(glsl_type::float_type);
- emit(RNDD(temp, op[0]));
+ bld.RNDD(temp, op[0]);
temp.negate = true;
- inst = emit(MOV(result, temp));
+ inst = bld.MOV(result, temp);
inst->saturate = instr->dest.saturate;
break;
}
case nir_op_ffloor:
- inst = emit(RNDD(result, op[0]));
+ inst = bld.RNDD(result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_ffract:
- inst = emit(FRC(result, op[0]));
+ inst = bld.FRC(result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fround_even:
- inst = emit(RNDE(result, op[0]));
+ inst = bld.RNDE(result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_imin:
case nir_op_umin:
if (devinfo->gen >= 6) {
- inst = emit(BRW_OPCODE_SEL, result, op[0], op[1]);
+ inst = bld.emit(BRW_OPCODE_SEL, result, op[0], op[1]);
inst->conditional_mod = BRW_CONDITIONAL_L;
} else {
- emit(CMP(reg_null_d, op[0], op[1], BRW_CONDITIONAL_L));
- inst = emit(SEL(result, op[0], op[1]));
+ bld.CMP(bld.null_reg_d(), op[0], op[1], BRW_CONDITIONAL_L);
+ inst = bld.SEL(result, op[0], op[1]);
inst->predicate = BRW_PREDICATE_NORMAL;
}
inst->saturate = instr->dest.saturate;
case nir_op_imax:
case nir_op_umax:
if (devinfo->gen >= 6) {
- inst = emit(BRW_OPCODE_SEL, result, op[0], op[1]);
+ inst = bld.emit(BRW_OPCODE_SEL, result, op[0], op[1]);
inst->conditional_mod = BRW_CONDITIONAL_GE;
} else {
- emit(CMP(reg_null_d, op[0], op[1], BRW_CONDITIONAL_GE));
- inst = emit(SEL(result, op[0], op[1]));
+ bld.CMP(bld.null_reg_d(), op[0], op[1], BRW_CONDITIONAL_GE);
+ inst = bld.SEL(result, op[0], op[1]);
inst->predicate = BRW_PREDICATE_NORMAL;
}
inst->saturate = instr->dest.saturate;
unreachable("not reached: should be handled by lower_packing_builtins");
case nir_op_unpack_half_2x16_split_x:
- inst = emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_X, result, op[0]);
+ inst = bld.emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_X, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_unpack_half_2x16_split_y:
- inst = emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_Y, result, op[0]);
+ inst = bld.emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_Y, result, op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_fpow:
- inst = emit_math(SHADER_OPCODE_POW, result, op[0], op[1]);
+ inst = bld.emit(SHADER_OPCODE_POW, result, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_bitfield_reverse:
- emit(BFREV(result, op[0]));
+ bld.BFREV(result, op[0]);
break;
case nir_op_bit_count:
- emit(CBIT(result, op[0]));
+ bld.CBIT(result, op[0]);
break;
case nir_op_ufind_msb:
case nir_op_ifind_msb: {
- emit(FBH(retype(result, BRW_REGISTER_TYPE_UD), op[0]));
+ bld.FBH(retype(result, BRW_REGISTER_TYPE_UD), op[0]);
/* FBH counts from the MSB side, while GLSL's findMSB() wants the count
* from the LSB side. If FBH didn't return an error (0xFFFFFFFF), then
* subtract the result from 31 to convert the MSB count into an LSB count.
*/
+ bld.CMP(bld.null_reg_d(), result, fs_reg(-1), BRW_CONDITIONAL_NZ);
- emit(CMP(reg_null_d, result, fs_reg(-1), BRW_CONDITIONAL_NZ));
- fs_reg neg_result(result);
- neg_result.negate = true;
- inst = emit(ADD(result, neg_result, fs_reg(31)));
+ inst = bld.ADD(result, result, fs_reg(31));
inst->predicate = BRW_PREDICATE_NORMAL;
+ inst->src[0].negate = true;
break;
}
case nir_op_find_lsb:
- emit(FBL(result, op[0]));
+ bld.FBL(result, op[0]);
break;
case nir_op_ubitfield_extract:
case nir_op_ibitfield_extract:
- emit(BFE(result, op[2], op[1], op[0]));
+ bld.BFE(result, op[2], op[1], op[0]);
break;
case nir_op_bfm:
- emit(BFI1(result, op[0], op[1]));
+ bld.BFI1(result, op[0], op[1]);
break;
case nir_op_bfi:
- emit(BFI2(result, op[0], op[1], op[2]));
+ bld.BFI2(result, op[0], op[1], op[2]);
break;
case nir_op_bitfield_insert:
"lower_instructions::bitfield_insert_to_bfm_bfi");
case nir_op_ishl:
- emit(SHL(result, op[0], op[1]));
+ bld.SHL(result, op[0], op[1]);
break;
case nir_op_ishr:
- emit(ASR(result, op[0], op[1]));
+ bld.ASR(result, op[0], op[1]);
break;
case nir_op_ushr:
- emit(SHR(result, op[0], op[1]));
+ bld.SHR(result, op[0], op[1]);
break;
case nir_op_pack_half_2x16_split:
- emit(FS_OPCODE_PACK_HALF_2x16_SPLIT, result, op[0], op[1]);
+ bld.emit(FS_OPCODE_PACK_HALF_2x16_SPLIT, result, op[0], op[1]);
break;
case nir_op_ffma:
- inst = emit(MAD(result, op[2], op[1], op[0]));
+ inst = bld.MAD(result, op[2], op[1], op[0]);
inst->saturate = instr->dest.saturate;
break;
case nir_op_flrp:
- inst = emit_lrp(result, op[0], op[1], op[2]);
+ inst = bld.LRP(result, op[0], op[1], op[2]);
inst->saturate = instr->dest.saturate;
break;
if (optimize_frontfacing_ternary(instr, result))
return;
- emit(CMP(reg_null_d, op[0], fs_reg(0), BRW_CONDITIONAL_NZ));
- inst = emit(SEL(result, op[1], op[2]));
+ bld.CMP(bld.null_reg_d(), op[0], fs_reg(0), BRW_CONDITIONAL_NZ);
+ inst = bld.SEL(result, op[1], op[2]);
inst->predicate = BRW_PREDICATE_NORMAL;
break;
if (devinfo->gen <= 5 &&
(instr->instr.pass_flags & BRW_NIR_BOOLEAN_MASK) == BRW_NIR_BOOLEAN_NEEDS_RESOLVE) {
fs_reg masked = vgrf(glsl_type::int_type);
- emit(AND(masked, result, fs_reg(1)));
+ bld.AND(masked, result, fs_reg(1));
masked.negate = true;
- emit(MOV(retype(result, BRW_REGISTER_TYPE_D), masked));
+ bld.MOV(retype(result, BRW_REGISTER_TYPE_D), masked);
}
}
+void
+fs_visitor::nir_emit_load_const(const fs_builder &bld,
+ nir_load_const_instr *instr)
+{
+ fs_reg reg = bld.vgrf(BRW_REGISTER_TYPE_D, instr->def.num_components);
+
+ for (unsigned i = 0; i < instr->def.num_components; i++)
+ bld.MOV(offset(reg, bld, i), fs_reg(instr->value.i[i]));
+
+ nir_ssa_values[instr->def.index] = reg;
+}
+
+void
+fs_visitor::nir_emit_undef(const fs_builder &bld, nir_ssa_undef_instr *instr)
+{
+ nir_ssa_values[instr->def.index] = bld.vgrf(BRW_REGISTER_TYPE_D,
+ instr->def.num_components);
+}
+
static fs_reg
fs_reg_for_nir_reg(fs_visitor *v, nir_register *nir_reg,
unsigned base_offset, nir_src *indirect)
{
fs_reg reg;
- if (nir_reg->is_global)
- reg = v->nir_globals[nir_reg->index];
- else
- reg = v->nir_locals[nir_reg->index];
- reg = offset(reg, base_offset * nir_reg->num_components);
+ assert(!nir_reg->is_global);
+
+ reg = v->nir_locals[nir_reg->index];
+
+ reg = offset(reg, v->bld, base_offset * nir_reg->num_components);
if (indirect) {
int multiplier = nir_reg->num_components * (v->dispatch_width / 8);
reg.reladdr = new(v->mem_ctx) fs_reg(v->vgrf(glsl_type::int_type));
- v->emit(v->MUL(*reg.reladdr, v->get_nir_src(*indirect),
- fs_reg(multiplier)));
+ v->bld.MUL(*reg.reladdr, v->get_nir_src(*indirect),
+ fs_reg(multiplier));
}
return reg;
fs_reg
fs_visitor::get_nir_src(nir_src src)
{
+ fs_reg reg;
if (src.is_ssa) {
- assert(src.ssa->parent_instr->type == nir_instr_type_load_const);
- nir_load_const_instr *load = nir_instr_as_load_const(src.ssa->parent_instr);
- fs_reg reg = vgrf(src.ssa->num_components);
- reg.type = BRW_REGISTER_TYPE_D;
-
- for (unsigned i = 0; i < src.ssa->num_components; ++i)
- emit(MOV(offset(reg, i), fs_reg(load->value.i[i])));
-
- return reg;
+ reg = nir_ssa_values[src.ssa->index];
} else {
- fs_reg reg = fs_reg_for_nir_reg(this, src.reg.reg, src.reg.base_offset,
- src.reg.indirect);
-
- /* to avoid floating-point denorm flushing problems, set the type by
- * default to D - instructions that need floating point semantics will set
- * this to F if they need to
- */
- return retype(reg, BRW_REGISTER_TYPE_D);
+ reg = fs_reg_for_nir_reg(this, src.reg.reg, src.reg.base_offset,
+ src.reg.indirect);
}
+
+ /* to avoid floating-point denorm flushing problems, set the type by
+ * default to D - instructions that need floating point semantics will set
+ * this to F if they need to
+ */
+ return retype(reg, BRW_REGISTER_TYPE_D);
}
fs_reg
fs_visitor::get_nir_dest(nir_dest dest)
{
+ if (dest.is_ssa) {
+ nir_ssa_values[dest.ssa.index] = bld.vgrf(BRW_REGISTER_TYPE_F,
+ dest.ssa.num_components);
+ return nir_ssa_values[dest.ssa.index];
+ }
+
return fs_reg_for_nir_reg(this, dest.reg.reg, dest.reg.base_offset,
dest.reg.indirect);
}
+fs_reg
+fs_visitor::get_nir_image_deref(const nir_deref_var *deref)
+{
+ fs_reg image(UNIFORM, deref->var->data.driver_location,
+ BRW_REGISTER_TYPE_UD);
+
+ for (const nir_deref *tail = &deref->deref; tail->child;
+ tail = tail->child) {
+ const nir_deref_array *deref_array = nir_deref_as_array(tail->child);
+ assert(tail->child->deref_type == nir_deref_type_array);
+ const unsigned size = glsl_get_length(tail->type);
+ const unsigned element_size = type_size_scalar(deref_array->deref.type);
+ const unsigned base = MIN2(deref_array->base_offset, size - 1);
+ image = offset(image, bld, base * element_size);
+
+ if (deref_array->deref_array_type == nir_deref_array_type_indirect) {
+ fs_reg tmp = vgrf(glsl_type::int_type);
+
+ if (devinfo->gen == 7 && !devinfo->is_haswell) {
+ /* IVB hangs when trying to access an invalid surface index with
+ * the dataport. According to the spec "if the index used to
+ * select an individual element is negative or greater than or
+ * equal to the size of the array, the results of the operation
+ * are undefined but may not lead to termination" -- which is one
+ * of the possible outcomes of the hang. Clamp the index to
+ * prevent access outside of the array bounds.
+ */
+ bld.emit_minmax(tmp, retype(get_nir_src(deref_array->indirect),
+ BRW_REGISTER_TYPE_UD),
+ fs_reg(size - base - 1), BRW_CONDITIONAL_L);
+ } else {
+ bld.MOV(tmp, get_nir_src(deref_array->indirect));
+ }
+
+ bld.MUL(tmp, tmp, fs_reg(element_size));
+ if (image.reladdr)
+ bld.ADD(*image.reladdr, *image.reladdr, tmp);
+ else
+ image.reladdr = new(mem_ctx) fs_reg(tmp);
+ }
+ }
+
+ return image;
+}
+
void
-fs_visitor::emit_percomp(fs_inst *inst, unsigned wr_mask)
+fs_visitor::emit_percomp(const fs_builder &bld, const fs_inst &inst,
+ unsigned wr_mask)
{
for (unsigned i = 0; i < 4; i++) {
if (!((wr_mask >> i) & 1))
continue;
- fs_inst *new_inst = new(mem_ctx) fs_inst(*inst);
- new_inst->dst = offset(new_inst->dst, i);
+ fs_inst *new_inst = new(mem_ctx) fs_inst(inst);
+ new_inst->dst = offset(new_inst->dst, bld, i);
for (unsigned j = 0; j < new_inst->sources; j++)
- if (inst->src[j].file == GRF)
- new_inst->src[j] = offset(new_inst->src[j], i);
+ if (new_inst->src[j].file == GRF)
+ new_inst->src[j] = offset(new_inst->src[j], bld, i);
+
+ bld.emit(new_inst);
+ }
+}
- emit(new_inst);
+/**
+ * Get the matching channel register datatype for an image intrinsic of the
+ * specified GLSL image type.
+ */
+static brw_reg_type
+get_image_base_type(const glsl_type *type)
+{
+ switch ((glsl_base_type)type->sampler_type) {
+ case GLSL_TYPE_UINT:
+ return BRW_REGISTER_TYPE_UD;
+ case GLSL_TYPE_INT:
+ return BRW_REGISTER_TYPE_D;
+ case GLSL_TYPE_FLOAT:
+ return BRW_REGISTER_TYPE_F;
+ default:
+ unreachable("Not reached.");
}
}
+/**
+ * Get the appropriate atomic op for an image atomic intrinsic.
+ */
+static unsigned
+get_image_atomic_op(nir_intrinsic_op op, const glsl_type *type)
+{
+ switch (op) {
+ case nir_intrinsic_image_atomic_add:
+ return BRW_AOP_ADD;
+ case nir_intrinsic_image_atomic_min:
+ return (get_image_base_type(type) == BRW_REGISTER_TYPE_D ?
+ BRW_AOP_IMIN : BRW_AOP_UMIN);
+ case nir_intrinsic_image_atomic_max:
+ return (get_image_base_type(type) == BRW_REGISTER_TYPE_D ?
+ BRW_AOP_IMAX : BRW_AOP_UMAX);
+ case nir_intrinsic_image_atomic_and:
+ return BRW_AOP_AND;
+ case nir_intrinsic_image_atomic_or:
+ return BRW_AOP_OR;
+ case nir_intrinsic_image_atomic_xor:
+ return BRW_AOP_XOR;
+ case nir_intrinsic_image_atomic_exchange:
+ return BRW_AOP_MOV;
+ case nir_intrinsic_image_atomic_comp_swap:
+ return BRW_AOP_CMPWR;
+ default:
+ unreachable("Not reachable.");
+ }
+}
+
+static fs_inst *
+emit_pixel_interpolater_send(const fs_builder &bld,
+ enum opcode opcode,
+ const fs_reg &dst,
+ const fs_reg &src,
+ const fs_reg &desc,
+ glsl_interp_qualifier interpolation)
+{
+ fs_inst *inst;
+ fs_reg payload;
+ int mlen;
+
+ if (src.file == BAD_FILE) {
+ /* Dummy payload */
+ payload = bld.vgrf(BRW_REGISTER_TYPE_F, 1);
+ mlen = 1;
+ } else {
+ payload = src;
+ mlen = 2 * bld.dispatch_width() / 8;
+ }
+
+ inst = bld.emit(opcode, dst, payload, desc);
+ inst->mlen = mlen;
+ /* 2 floats per slot returned */
+ inst->regs_written = 2 * bld.dispatch_width() / 8;
+ inst->pi_noperspective = interpolation == INTERP_QUALIFIER_NOPERSPECTIVE;
+
+ return inst;
+}
+
+/**
+ * Computes 1 << x, given a D/UD register containing some value x.
+ */
+static fs_reg
+intexp2(const fs_builder &bld, const fs_reg &x)
+{
+ assert(x.type == BRW_REGISTER_TYPE_UD || x.type == BRW_REGISTER_TYPE_D);
+
+ fs_reg result = bld.vgrf(x.type, 1);
+ fs_reg one = bld.vgrf(x.type, 1);
+
+ bld.MOV(one, retype(fs_reg(1), one.type));
+ bld.SHL(result, one, x);
+ return result;
+}
+
void
-fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
+fs_visitor::emit_gs_end_primitive(const nir_src &vertex_count_nir_src)
+{
+ assert(stage == MESA_SHADER_GEOMETRY);
+
+ struct brw_gs_prog_data *gs_prog_data =
+ (struct brw_gs_prog_data *) prog_data;
+
+ /* We can only do EndPrimitive() functionality when the control data
+ * consists of cut bits. Fortunately, the only time it isn't is when the
+ * output type is points, in which case EndPrimitive() is a no-op.
+ */
+ if (gs_prog_data->control_data_format !=
+ GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_CUT) {
+ return;
+ }
+
+ /* Cut bits use one bit per vertex. */
+ assert(gs_compile->control_data_bits_per_vertex == 1);
+
+ fs_reg vertex_count = get_nir_src(vertex_count_nir_src);
+ vertex_count.type = BRW_REGISTER_TYPE_UD;
+
+ /* Cut bit n should be set to 1 if EndPrimitive() was called after emitting
+ * vertex n, 0 otherwise. So all we need to do here is mark bit
+ * (vertex_count - 1) % 32 in the cut_bits register to indicate that
+ * EndPrimitive() was called after emitting vertex (vertex_count - 1);
+ * vec4_gs_visitor::emit_control_data_bits() will take care of the rest.
+ *
+ * Note that if EndPrimitive() is called before emitting any vertices, this
+ * will cause us to set bit 31 of the control_data_bits register to 1.
+ * That's fine because:
+ *
+ * - If max_vertices < 32, then vertex number 31 (zero-based) will never be
+ * output, so the hardware will ignore cut bit 31.
+ *
+ * - If max_vertices == 32, then vertex number 31 is guaranteed to be the
+ * last vertex, so setting cut bit 31 has no effect (since the primitive
+ * is automatically ended when the GS terminates).
+ *
+ * - If max_vertices > 32, then the ir_emit_vertex visitor will reset the
+ * control_data_bits register to 0 when the first vertex is emitted.
+ */
+
+ const fs_builder abld = bld.annotate("end primitive");
+
+ /* control_data_bits |= 1 << ((vertex_count - 1) % 32) */
+ fs_reg prev_count = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.ADD(prev_count, vertex_count, fs_reg(0xffffffffu));
+ fs_reg mask = intexp2(abld, prev_count);
+ /* Note: we're relying on the fact that the GEN SHL instruction only pays
+ * attention to the lower 5 bits of its second source argument, so on this
+ * architecture, 1 << (vertex_count - 1) is equivalent to 1 <<
+ * ((vertex_count - 1) % 32).
+ */
+ abld.OR(this->control_data_bits, this->control_data_bits, mask);
+}
+
+void
+fs_visitor::emit_gs_control_data_bits(const fs_reg &vertex_count)
+{
+ assert(stage == MESA_SHADER_GEOMETRY);
+ assert(gs_compile->control_data_bits_per_vertex != 0);
+
+ struct brw_gs_prog_data *gs_prog_data =
+ (struct brw_gs_prog_data *) prog_data;
+
+ const fs_builder abld = bld.annotate("emit control data bits");
+ const fs_builder fwa_bld = bld.exec_all();
+
+ /* We use a single UD register to accumulate control data bits (32 bits
+ * for each of the SIMD8 channels). So we need to write a DWord (32 bits)
+ * at a time.
+ *
+ * Unfortunately, the URB_WRITE_SIMD8 message uses 128-bit (OWord) offsets.
+ * We have select a 128-bit group via the Global and Per-Slot Offsets, then
+ * use the Channel Mask phase to enable/disable which DWord within that
+ * group to write. (Remember, different SIMD8 channels may have emitted
+ * different numbers of vertices, so we may need per-slot offsets.)
+ *
+ * Channel masking presents an annoying problem: we may have to replicate
+ * the data up to 4 times:
+ *
+ * Msg = Handles, Per-Slot Offsets, Channel Masks, Data, Data, Data, Data.
+ *
+ * To avoid penalizing shaders that emit a small number of vertices, we
+ * can avoid these sometimes: if the size of the control data header is
+ * <= 128 bits, then there is only 1 OWord. All SIMD8 channels will land
+ * land in the same 128-bit group, so we can skip per-slot offsets.
+ *
+ * Similarly, if the control data header is <= 32 bits, there is only one
+ * DWord, so we can skip channel masks.
+ */
+ enum opcode opcode = SHADER_OPCODE_URB_WRITE_SIMD8;
+
+ fs_reg channel_mask, per_slot_offset;
+
+ if (gs_compile->control_data_header_size_bits > 32) {
+ opcode = SHADER_OPCODE_URB_WRITE_SIMD8_MASKED;
+ channel_mask = vgrf(glsl_type::uint_type);
+ }
+
+ if (gs_compile->control_data_header_size_bits > 128) {
+ opcode = SHADER_OPCODE_URB_WRITE_SIMD8_MASKED_PER_SLOT;
+ per_slot_offset = vgrf(glsl_type::uint_type);
+ }
+
+ /* Figure out which DWord we're trying to write to using the formula:
+ *
+ * dword_index = (vertex_count - 1) * bits_per_vertex / 32
+ *
+ * Since bits_per_vertex is a power of two, and is known at compile
+ * time, this can be optimized to:
+ *
+ * dword_index = (vertex_count - 1) >> (6 - log2(bits_per_vertex))
+ */
+ if (opcode != SHADER_OPCODE_URB_WRITE_SIMD8) {
+ fs_reg dword_index = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ fs_reg prev_count = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.ADD(prev_count, vertex_count, fs_reg(0xffffffffu));
+ unsigned log2_bits_per_vertex =
+ _mesa_fls(gs_compile->control_data_bits_per_vertex);
+ abld.SHR(dword_index, prev_count, fs_reg(6u - log2_bits_per_vertex));
+
+ if (per_slot_offset.file != BAD_FILE) {
+ /* Set the per-slot offset to dword_index / 4, so that we'll write to
+ * the appropriate OWord within the control data header.
+ */
+ abld.SHR(per_slot_offset, dword_index, fs_reg(2u));
+ }
+
+ /* Set the channel masks to 1 << (dword_index % 4), so that we'll
+ * write to the appropriate DWORD within the OWORD.
+ */
+ fs_reg channel = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ fwa_bld.AND(channel, dword_index, fs_reg(3u));
+ channel_mask = intexp2(fwa_bld, channel);
+ /* Then the channel masks need to be in bits 23:16. */
+ fwa_bld.SHL(channel_mask, channel_mask, fs_reg(16u));
+ }
+
+ /* Store the control data bits in the message payload and send it. */
+ int mlen = 2;
+ if (channel_mask.file != BAD_FILE)
+ mlen += 4; /* channel masks, plus 3 extra copies of the data */
+ if (per_slot_offset.file != BAD_FILE)
+ mlen++;
+
+ fs_reg payload = bld.vgrf(BRW_REGISTER_TYPE_UD, mlen);
+ fs_reg *sources = ralloc_array(mem_ctx, fs_reg, mlen);
+ int i = 0;
+ sources[i++] = fs_reg(retype(brw_vec8_grf(1, 0), BRW_REGISTER_TYPE_UD));
+ if (per_slot_offset.file != BAD_FILE)
+ sources[i++] = per_slot_offset;
+ if (channel_mask.file != BAD_FILE)
+ sources[i++] = channel_mask;
+ while (i < mlen) {
+ sources[i++] = this->control_data_bits;
+ }
+
+ abld.LOAD_PAYLOAD(payload, sources, mlen, mlen);
+ fs_inst *inst = abld.emit(opcode, reg_undef, payload);
+ inst->mlen = mlen;
+ /* We need to increment Global Offset by 256-bits to make room for
+ * Broadwell's extra "Vertex Count" payload at the beginning of the
+ * URB entry. Since this is an OWord message, Global Offset is counted
+ * in 128-bit units, so we must set it to 2.
+ */
+ if (gs_prog_data->static_vertex_count == -1)
+ inst->offset = 2;
+}
+
+void
+fs_visitor::set_gs_stream_control_data_bits(const fs_reg &vertex_count,
+ unsigned stream_id)
+{
+ /* control_data_bits |= stream_id << ((2 * (vertex_count - 1)) % 32) */
+
+ /* Note: we are calling this *before* increasing vertex_count, so
+ * this->vertex_count == vertex_count - 1 in the formula above.
+ */
+
+ /* Stream mode uses 2 bits per vertex */
+ assert(gs_compile->control_data_bits_per_vertex == 2);
+
+ /* Must be a valid stream */
+ assert(stream_id >= 0 && stream_id < MAX_VERTEX_STREAMS);
+
+ /* Control data bits are initialized to 0 so we don't have to set any
+ * bits when sending vertices to stream 0.
+ */
+ if (stream_id == 0)
+ return;
+
+ const fs_builder abld = bld.annotate("set stream control data bits", NULL);
+
+ /* reg::sid = stream_id */
+ fs_reg sid = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.MOV(sid, fs_reg(stream_id));
+
+ /* reg:shift_count = 2 * (vertex_count - 1) */
+ fs_reg shift_count = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.SHL(shift_count, vertex_count, fs_reg(1u));
+
+ /* Note: we're relying on the fact that the GEN SHL instruction only pays
+ * attention to the lower 5 bits of its second source argument, so on this
+ * architecture, stream_id << 2 * (vertex_count - 1) is equivalent to
+ * stream_id << ((2 * (vertex_count - 1)) % 32).
+ */
+ fs_reg mask = bld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.SHL(mask, sid, shift_count);
+ abld.OR(this->control_data_bits, this->control_data_bits, mask);
+}
+
+void
+fs_visitor::emit_gs_vertex(const nir_src &vertex_count_nir_src,
+ unsigned stream_id)
+{
+ assert(stage == MESA_SHADER_GEOMETRY);
+
+ struct brw_gs_prog_data *gs_prog_data =
+ (struct brw_gs_prog_data *) prog_data;
+
+ fs_reg vertex_count = get_nir_src(vertex_count_nir_src);
+ vertex_count.type = BRW_REGISTER_TYPE_UD;
+
+ /* Haswell and later hardware ignores the "Render Stream Select" bits
+ * from the 3DSTATE_STREAMOUT packet when the SOL stage is disabled,
+ * and instead sends all primitives down the pipeline for rasterization.
+ * If the SOL stage is enabled, "Render Stream Select" is honored and
+ * primitives bound to non-zero streams are discarded after stream output.
+ *
+ * Since the only purpose of primives sent to non-zero streams is to
+ * be recorded by transform feedback, we can simply discard all geometry
+ * bound to these streams when transform feedback is disabled.
+ */
+ if (stream_id > 0 && !nir->info.has_transform_feedback_varyings)
+ return;
+
+ /* If we're outputting 32 control data bits or less, then we can wait
+ * until the shader is over to output them all. Otherwise we need to
+ * output them as we go. Now is the time to do it, since we're about to
+ * output the vertex_count'th vertex, so it's guaranteed that the
+ * control data bits associated with the (vertex_count - 1)th vertex are
+ * correct.
+ */
+ if (gs_compile->control_data_header_size_bits > 32) {
+ const fs_builder abld =
+ bld.annotate("emit vertex: emit control data bits");
+
+ /* Only emit control data bits if we've finished accumulating a batch
+ * of 32 bits. This is the case when:
+ *
+ * (vertex_count * bits_per_vertex) % 32 == 0
+ *
+ * (in other words, when the last 5 bits of vertex_count *
+ * bits_per_vertex are 0). Assuming bits_per_vertex == 2^n for some
+ * integer n (which is always the case, since bits_per_vertex is
+ * always 1 or 2), this is equivalent to requiring that the last 5-n
+ * bits of vertex_count are 0:
+ *
+ * vertex_count & (2^(5-n) - 1) == 0
+ *
+ * 2^(5-n) == 2^5 / 2^n == 32 / bits_per_vertex, so this is
+ * equivalent to:
+ *
+ * vertex_count & (32 / bits_per_vertex - 1) == 0
+ *
+ * TODO: If vertex_count is an immediate, we could do some of this math
+ * at compile time...
+ */
+ fs_inst *inst =
+ abld.AND(bld.null_reg_d(), vertex_count,
+ fs_reg(32u / gs_compile->control_data_bits_per_vertex - 1u));
+ inst->conditional_mod = BRW_CONDITIONAL_Z;
+
+ abld.IF(BRW_PREDICATE_NORMAL);
+ /* If vertex_count is 0, then no control data bits have been
+ * accumulated yet, so we can skip emitting them.
+ */
+ abld.CMP(bld.null_reg_d(), vertex_count, fs_reg(0u),
+ BRW_CONDITIONAL_NEQ);
+ abld.IF(BRW_PREDICATE_NORMAL);
+ emit_gs_control_data_bits(vertex_count);
+ abld.emit(BRW_OPCODE_ENDIF);
+
+ /* Reset control_data_bits to 0 so we can start accumulating a new
+ * batch.
+ *
+ * Note: in the case where vertex_count == 0, this neutralizes the
+ * effect of any call to EndPrimitive() that the shader may have
+ * made before outputting its first vertex.
+ */
+ inst = abld.MOV(this->control_data_bits, fs_reg(0u));
+ inst->force_writemask_all = true;
+ abld.emit(BRW_OPCODE_ENDIF);
+ }
+
+ emit_urb_writes(vertex_count);
+
+ /* In stream mode we have to set control data bits for all vertices
+ * unless we have disabled control data bits completely (which we do
+ * do for GL_POINTS outputs that don't use streams).
+ */
+ if (gs_compile->control_data_header_size_bits > 0 &&
+ gs_prog_data->control_data_format ==
+ GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_SID) {
+ set_gs_stream_control_data_bits(vertex_count, stream_id);
+ }
+}
+
+void
+fs_visitor::emit_gs_input_load(const fs_reg &dst,
+ const nir_src &vertex_src,
+ unsigned input_offset,
+ unsigned num_components)
+{
+ const brw_vue_prog_data *vue_prog_data = (const brw_vue_prog_data *) prog_data;
+ const unsigned vertex = nir_src_as_const_value(vertex_src)->u[0];
+
+ const unsigned array_stride = vue_prog_data->urb_read_length * 8;
+
+ const bool pushed = 4 * input_offset < array_stride;
+
+ if (input_offset == 0) {
+ /* This is the VUE header, containing VARYING_SLOT_LAYER [.y],
+ * VARYING_SLOT_VIEWPORT [.z], and VARYING_SLOT_PSIZ [.w].
+ * Only gl_PointSize is available as a GS input, so they must
+ * be asking for that input.
+ */
+ if (pushed) {
+ bld.MOV(dst, fs_reg(ATTR, array_stride * vertex + 3, dst.type));
+ } else {
+ fs_reg tmp = bld.vgrf(dst.type, 4);
+ fs_inst *inst = bld.emit(SHADER_OPCODE_URB_READ_SIMD8, tmp,
+ fs_reg(vertex), fs_reg(0));
+ inst->regs_written = 4;
+ bld.MOV(dst, offset(tmp, bld, 3));
+ }
+ } else {
+ if (pushed) {
+ int index = vertex * array_stride + 4 * input_offset;
+ for (unsigned i = 0; i < num_components; i++) {
+ bld.MOV(offset(dst, bld, i), fs_reg(ATTR, index + i, dst.type));
+ }
+ } else {
+ fs_inst *inst = bld.emit(SHADER_OPCODE_URB_READ_SIMD8, dst,
+ fs_reg(vertex), fs_reg(input_offset));
+ inst->regs_written = num_components;
+ }
+ }
+}
+
+void
+fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr)
{
fs_reg dest;
if (nir_intrinsic_infos[instr->intrinsic].has_dest)
*/
fs_inst *cmp;
if (instr->intrinsic == nir_intrinsic_discard_if) {
- cmp = emit(CMP(reg_null_f, get_nir_src(instr->src[0]),
- fs_reg(0), BRW_CONDITIONAL_Z));
+ cmp = bld.CMP(bld.null_reg_f(), get_nir_src(instr->src[0]),
+ fs_reg(0), BRW_CONDITIONAL_Z);
} else {
fs_reg some_reg = fs_reg(retype(brw_vec8_grf(0, 0),
BRW_REGISTER_TYPE_UW));
- cmp = emit(CMP(reg_null_f, some_reg, some_reg, BRW_CONDITIONAL_NZ));
+ cmp = bld.CMP(bld.null_reg_f(), some_reg, some_reg, BRW_CONDITIONAL_NZ);
}
cmp->predicate = BRW_PREDICATE_NORMAL;
cmp->flag_subreg = 1;
case nir_intrinsic_atomic_counter_inc:
case nir_intrinsic_atomic_counter_dec:
case nir_intrinsic_atomic_counter_read: {
- unsigned surf_index = prog_data->binding_table.abo_start +
- (unsigned) instr->const_index[0];
- fs_reg offset = fs_reg(get_nir_src(instr->src[0]));
+ using namespace surface_access;
+ /* Get the arguments of the atomic intrinsic. */
+ const fs_reg offset = get_nir_src(instr->src[0]);
+ const unsigned surface = (stage_prog_data->binding_table.abo_start +
+ instr->const_index[0]);
+ fs_reg tmp;
+
+ /* Emit a surface read or atomic op. */
switch (instr->intrinsic) {
- case nir_intrinsic_atomic_counter_inc:
- emit_untyped_atomic(BRW_AOP_INC, surf_index, dest, offset,
- fs_reg(), fs_reg());
- break;
- case nir_intrinsic_atomic_counter_dec:
- emit_untyped_atomic(BRW_AOP_PREDEC, surf_index, dest, offset,
- fs_reg(), fs_reg());
- break;
- case nir_intrinsic_atomic_counter_read:
- emit_untyped_surface_read(surf_index, dest, offset);
- break;
- default:
- unreachable("Unreachable");
+ case nir_intrinsic_atomic_counter_read:
+ tmp = emit_untyped_read(bld, fs_reg(surface), offset, 1, 1);
+ break;
+
+ case nir_intrinsic_atomic_counter_inc:
+ tmp = emit_untyped_atomic(bld, fs_reg(surface), offset, fs_reg(),
+ fs_reg(), 1, 1, BRW_AOP_INC);
+ break;
+
+ case nir_intrinsic_atomic_counter_dec:
+ tmp = emit_untyped_atomic(bld, fs_reg(surface), offset, fs_reg(),
+ fs_reg(), 1, 1, BRW_AOP_PREDEC);
+ break;
+
+ default:
+ unreachable("Unreachable");
}
+
+ /* Assign the result. */
+ bld.MOV(retype(dest, BRW_REGISTER_TYPE_UD), tmp);
+
+ /* Mark the surface as used. */
+ brw_mark_surface_used(stage_prog_data, surface);
break;
}
- case nir_intrinsic_load_front_face:
- emit(MOV(retype(dest, BRW_REGISTER_TYPE_D),
- *emit_frontfacing_interpolation()));
+ case nir_intrinsic_image_load:
+ case nir_intrinsic_image_store:
+ case nir_intrinsic_image_atomic_add:
+ case nir_intrinsic_image_atomic_min:
+ case nir_intrinsic_image_atomic_max:
+ case nir_intrinsic_image_atomic_and:
+ case nir_intrinsic_image_atomic_or:
+ case nir_intrinsic_image_atomic_xor:
+ case nir_intrinsic_image_atomic_exchange:
+ case nir_intrinsic_image_atomic_comp_swap: {
+ using namespace image_access;
+
+ /* Get the referenced image variable and type. */
+ const nir_variable *var = instr->variables[0]->var;
+ const glsl_type *type = var->type->without_array();
+ const brw_reg_type base_type = get_image_base_type(type);
+
+ /* Get some metadata from the image intrinsic. */
+ const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic];
+ const unsigned arr_dims = type->sampler_array ? 1 : 0;
+ const unsigned surf_dims = type->coordinate_components() - arr_dims;
+ const mesa_format format =
+ (var->data.image.write_only ? MESA_FORMAT_NONE :
+ _mesa_get_shader_image_format(var->data.image.format));
+
+ /* Get the arguments of the image intrinsic. */
+ const fs_reg image = get_nir_image_deref(instr->variables[0]);
+ const fs_reg addr = retype(get_nir_src(instr->src[0]),
+ BRW_REGISTER_TYPE_UD);
+ const fs_reg src0 = (info->num_srcs >= 3 ?
+ retype(get_nir_src(instr->src[2]), base_type) :
+ fs_reg());
+ const fs_reg src1 = (info->num_srcs >= 4 ?
+ retype(get_nir_src(instr->src[3]), base_type) :
+ fs_reg());
+ fs_reg tmp;
+
+ /* Emit an image load, store or atomic op. */
+ if (instr->intrinsic == nir_intrinsic_image_load)
+ tmp = emit_image_load(bld, image, addr, surf_dims, arr_dims, format);
+
+ else if (instr->intrinsic == nir_intrinsic_image_store)
+ emit_image_store(bld, image, addr, src0, surf_dims, arr_dims, format);
+
+ else
+ tmp = emit_image_atomic(bld, image, addr, src0, src1,
+ surf_dims, arr_dims, info->dest_components,
+ get_image_atomic_op(instr->intrinsic, type));
+
+ /* Assign the result. */
+ for (unsigned c = 0; c < info->dest_components; ++c)
+ bld.MOV(offset(retype(dest, base_type), bld, c),
+ offset(tmp, bld, c));
break;
+ }
- case nir_intrinsic_load_vertex_id:
- unreachable("should be lowered by lower_vertex_id()");
-
- case nir_intrinsic_load_vertex_id_zero_base: {
- fs_reg vertex_id = nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
- assert(vertex_id.file != BAD_FILE);
- dest.type = vertex_id.type;
- emit(MOV(dest, vertex_id));
+ case nir_intrinsic_memory_barrier: {
+ const fs_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD, 16 / dispatch_width);
+ bld.emit(SHADER_OPCODE_MEMORY_FENCE, tmp)
+ ->regs_written = 2;
break;
}
- case nir_intrinsic_load_base_vertex: {
- fs_reg base_vertex = nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
- assert(base_vertex.file != BAD_FILE);
- dest.type = base_vertex.type;
- emit(MOV(dest, base_vertex));
+ case nir_intrinsic_shader_clock: {
+ /* We cannot do anything if there is an event, so ignore it for now */
+ fs_reg shader_clock = get_timestamp(bld);
+ const fs_reg srcs[] = { shader_clock.set_smear(0), shader_clock.set_smear(1) };
+
+ bld.LOAD_PAYLOAD(dest, srcs, ARRAY_SIZE(srcs), 0);
break;
}
- case nir_intrinsic_load_instance_id: {
- fs_reg instance_id = nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
- assert(instance_id.file != BAD_FILE);
- dest.type = instance_id.type;
- emit(MOV(dest, instance_id));
+ case nir_intrinsic_image_size: {
+ /* Get the referenced image variable and type. */
+ const nir_variable *var = instr->variables[0]->var;
+ const glsl_type *type = var->type->without_array();
+
+ /* Get the size of the image. */
+ const fs_reg image = get_nir_image_deref(instr->variables[0]);
+ const fs_reg size = offset(image, bld, BRW_IMAGE_PARAM_SIZE_OFFSET);
+
+ /* For 1DArray image types, the array index is stored in the Z component.
+ * Fix this by swizzling the Z component to the Y component.
+ */
+ const bool is_1d_array_image =
+ type->sampler_dimensionality == GLSL_SAMPLER_DIM_1D &&
+ type->sampler_array;
+
+ /* For CubeArray images, we should count the number of cubes instead
+ * of the number of faces. Fix it by dividing the (Z component) by 6.
+ */
+ const bool is_cube_array_image =
+ type->sampler_dimensionality == GLSL_SAMPLER_DIM_CUBE &&
+ type->sampler_array;
+
+ /* Copy all the components. */
+ const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic];
+ for (unsigned c = 0; c < info->dest_components; ++c) {
+ if ((int)c >= type->coordinate_components()) {
+ bld.MOV(offset(retype(dest, BRW_REGISTER_TYPE_D), bld, c),
+ fs_reg(1));
+ } else if (c == 1 && is_1d_array_image) {
+ bld.MOV(offset(retype(dest, BRW_REGISTER_TYPE_D), bld, c),
+ offset(size, bld, 2));
+ } else if (c == 2 && is_cube_array_image) {
+ bld.emit(SHADER_OPCODE_INT_QUOTIENT,
+ offset(retype(dest, BRW_REGISTER_TYPE_D), bld, c),
+ offset(size, bld, c), fs_reg(6));
+ } else {
+ bld.MOV(offset(retype(dest, BRW_REGISTER_TYPE_D), bld, c),
+ offset(size, bld, c));
+ }
+ }
+
break;
}
- case nir_intrinsic_load_sample_mask_in: {
- fs_reg sample_mask_in = nir_system_values[SYSTEM_VALUE_SAMPLE_MASK_IN];
- assert(sample_mask_in.file != BAD_FILE);
- dest.type = sample_mask_in.type;
- emit(MOV(dest, sample_mask_in));
+ case nir_intrinsic_image_samples:
+ /* The driver does not support multi-sampled images. */
+ bld.MOV(retype(dest, BRW_REGISTER_TYPE_D), fs_reg(1));
+ break;
+
+ case nir_intrinsic_load_front_face:
+ bld.MOV(retype(dest, BRW_REGISTER_TYPE_D),
+ *emit_frontfacing_interpolation());
+ break;
+
+ case nir_intrinsic_load_vertex_id:
+ unreachable("should be lowered by lower_vertex_id()");
+
+ case nir_intrinsic_load_primitive_id:
+ assert(stage == MESA_SHADER_GEOMETRY);
+ assert(((struct brw_gs_prog_data *)prog_data)->include_primitive_id);
+ bld.MOV(retype(dest, BRW_REGISTER_TYPE_UD),
+ retype(fs_reg(brw_vec8_grf(2, 0)), BRW_REGISTER_TYPE_UD));
+ break;
+
+ case nir_intrinsic_load_vertex_id_zero_base:
+ case nir_intrinsic_load_base_vertex:
+ case nir_intrinsic_load_instance_id:
+ case nir_intrinsic_load_invocation_id:
+ case nir_intrinsic_load_sample_mask_in:
+ case nir_intrinsic_load_sample_id: {
+ gl_system_value sv = nir_system_value_from_intrinsic(instr->intrinsic);
+ fs_reg val = nir_system_values[sv];
+ assert(val.file != BAD_FILE);
+ dest.type = val.type;
+ bld.MOV(dest, val);
break;
}
fs_reg sample_pos = nir_system_values[SYSTEM_VALUE_SAMPLE_POS];
assert(sample_pos.file != BAD_FILE);
dest.type = sample_pos.type;
- emit(MOV(dest, sample_pos));
- emit(MOV(offset(dest, 1), offset(sample_pos, 1)));
- break;
- }
-
- case nir_intrinsic_load_sample_id: {
- fs_reg sample_id = nir_system_values[SYSTEM_VALUE_SAMPLE_ID];
- assert(sample_id.file != BAD_FILE);
- dest.type = sample_id.type;
- emit(MOV(dest, sample_id));
+ bld.MOV(dest, sample_pos);
+ bld.MOV(offset(dest, bld, 1), offset(sample_pos, bld, 1));
break;
}
has_indirect = true;
/* fallthrough */
case nir_intrinsic_load_uniform: {
- unsigned index = instr->const_index[0];
+ fs_reg uniform_reg(UNIFORM, instr->const_index[0]);
+ uniform_reg.reg_offset = instr->const_index[1];
- fs_reg uniform_reg;
- if (index < num_direct_uniforms) {
- uniform_reg = fs_reg(UNIFORM, 0);
- } else {
- uniform_reg = fs_reg(UNIFORM, num_direct_uniforms);
- index -= num_direct_uniforms;
- }
-
- for (int i = 0; i < instr->const_index[1]; i++) {
- for (unsigned j = 0; j < instr->num_components; j++) {
- fs_reg src = offset(retype(uniform_reg, dest.type), index);
- if (has_indirect)
- src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
- index++;
+ for (unsigned j = 0; j < instr->num_components; j++) {
+ fs_reg src = offset(retype(uniform_reg, dest.type), bld, j);
+ if (has_indirect)
+ src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
- emit(MOV(dest, src));
- dest = offset(dest, 1);
- }
+ bld.MOV(dest, src);
+ dest = offset(dest, bld, 1);
}
break;
}
fs_reg surf_index;
if (const_index) {
- surf_index = fs_reg(stage_prog_data->binding_table.ubo_start +
- const_index->u[0]);
+ const unsigned index = stage_prog_data->binding_table.ubo_start +
+ const_index->u[0];
+ surf_index = fs_reg(index);
+ brw_mark_surface_used(prog_data, index);
} else {
/* The block index is not a constant. Evaluate the index expression
- * per-channel and add the base UBO index; the generator will select
- * a value from any live channel.
+ * per-channel and add the base UBO index; we have to select a value
+ * from any live channel.
*/
surf_index = vgrf(glsl_type::uint_type);
- emit(ADD(surf_index, get_nir_src(instr->src[0]),
- fs_reg(stage_prog_data->binding_table.ubo_start)))
- ->force_writemask_all = true;
+ bld.ADD(surf_index, get_nir_src(instr->src[0]),
+ fs_reg(stage_prog_data->binding_table.ubo_start));
+ surf_index = bld.emit_uniformize(surf_index);
/* Assume this may touch any UBO. It would be nice to provide
* a tighter bound, but the array information is already lowered away.
*/
brw_mark_surface_used(prog_data,
stage_prog_data->binding_table.ubo_start +
- shader_prog->NumUniformBlocks - 1);
+ nir->info.num_ubos - 1);
}
if (has_indirect) {
/* Turn the byte offset into a dword offset. */
fs_reg base_offset = vgrf(glsl_type::int_type);
- emit(SHR(base_offset, retype(get_nir_src(instr->src[1]),
- BRW_REGISTER_TYPE_D),
- fs_reg(2)));
+ bld.SHR(base_offset, retype(get_nir_src(instr->src[1]),
+ BRW_REGISTER_TYPE_D),
+ fs_reg(2));
unsigned vec4_offset = instr->const_index[0] / 4;
for (int i = 0; i < instr->num_components; i++)
- emit(VARYING_PULL_CONSTANT_LOAD(offset(dest, i), surf_index,
- base_offset, vec4_offset + i));
+ VARYING_PULL_CONSTANT_LOAD(bld, offset(dest, bld, i), surf_index,
+ base_offset, vec4_offset + i);
} else {
fs_reg packed_consts = vgrf(glsl_type::float_type);
packed_consts.type = dest.type;
fs_reg const_offset_reg((unsigned) instr->const_index[0] & ~15);
- emit(FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD, packed_consts,
- surf_index, const_offset_reg);
+ bld.emit(FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD, packed_consts,
+ surf_index, const_offset_reg);
for (unsigned i = 0; i < instr->num_components; i++) {
packed_consts.set_smear(instr->const_index[0] % 16 / 4 + i);
*/
assert(packed_consts.subreg_offset < 32);
- emit(MOV(dest, packed_consts));
- dest = offset(dest, 1);
+ bld.MOV(dest, packed_consts);
+ dest = offset(dest, bld, 1);
}
}
break;
}
+ case nir_intrinsic_load_ssbo_indirect:
+ has_indirect = true;
+ /* fallthrough */
+ case nir_intrinsic_load_ssbo: {
+ assert(devinfo->gen >= 7);
+
+ nir_const_value *const_uniform_block =
+ nir_src_as_const_value(instr->src[0]);
+
+ fs_reg surf_index;
+ if (const_uniform_block) {
+ unsigned index = stage_prog_data->binding_table.ssbo_start +
+ const_uniform_block->u[0];
+ surf_index = fs_reg(index);
+ brw_mark_surface_used(prog_data, index);
+ } else {
+ surf_index = vgrf(glsl_type::uint_type);
+ bld.ADD(surf_index, get_nir_src(instr->src[0]),
+ fs_reg(stage_prog_data->binding_table.ssbo_start));
+
+ /* Assume this may touch any UBO. It would be nice to provide
+ * a tighter bound, but the array information is already lowered away.
+ */
+ brw_mark_surface_used(prog_data,
+ stage_prog_data->binding_table.ssbo_start +
+ nir->info.num_ssbos - 1);
+ }
+
+ /* Get the offset to read from */
+ fs_reg offset_reg;
+ if (has_indirect) {
+ offset_reg = get_nir_src(instr->src[1]);
+ } else {
+ offset_reg = fs_reg(instr->const_index[0]);
+ }
+
+ /* Read the vector */
+ fs_reg read_result = emit_untyped_read(bld, surf_index, offset_reg,
+ 1 /* dims */,
+ instr->num_components,
+ BRW_PREDICATE_NONE);
+ read_result.type = dest.type;
+ for (int i = 0; i < instr->num_components; i++)
+ bld.MOV(offset(dest, bld, i), offset(read_result, bld, i));
+
+ break;
+ }
+
case nir_intrinsic_load_input_indirect:
has_indirect = true;
/* fallthrough */
case nir_intrinsic_load_input: {
unsigned index = 0;
- for (int i = 0; i < instr->const_index[1]; i++) {
- for (unsigned j = 0; j < instr->num_components; j++) {
- fs_reg src = offset(retype(nir_inputs, dest.type),
- instr->const_index[0] + index);
- if (has_indirect)
- src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
- index++;
-
- emit(MOV(dest, src));
- dest = offset(dest, 1);
+ for (unsigned j = 0; j < instr->num_components; j++) {
+ fs_reg src;
+ if (stage == MESA_SHADER_VERTEX) {
+ src = offset(fs_reg(ATTR, instr->const_index[0], dest.type), bld, index);
+ } else {
+ src = offset(retype(nir_inputs, dest.type), bld,
+ instr->const_index[0] + index);
}
+ if (has_indirect)
+ src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
+ index++;
+
+ bld.MOV(dest, src);
+ dest = offset(dest, bld, 1);
}
break;
}
+ case nir_intrinsic_load_per_vertex_input_indirect:
+ assert(!"Not allowed");
+ /* fallthrough */
+ case nir_intrinsic_load_per_vertex_input:
+ emit_gs_input_load(dest, instr->src[0], instr->const_index[0],
+ instr->num_components);
+ break;
+
/* Handle ARB_gpu_shader5 interpolation intrinsics
*
* It's worth a quick word of explanation as to why we handle the full
case nir_intrinsic_interp_var_at_centroid:
case nir_intrinsic_interp_var_at_sample:
case nir_intrinsic_interp_var_at_offset: {
- /* in SIMD16 mode, the pixel interpolator returns coords interleaved
- * 8 channels at a time, same as the barycentric coords presented in
- * the FS payload. this requires a bit of extra work to support.
- */
- no16("interpolate_at_* not yet supported in SIMD16 mode.");
+ assert(stage == MESA_SHADER_FRAGMENT);
- fs_reg dst_xy = vgrf(2);
+ ((struct brw_wm_prog_data *) prog_data)->pulls_bary = true;
- /* For most messages, we need one reg of ignored data; the hardware
- * requires mlen==1 even when there is no payload. in the per-slot
- * offset case, we'll replace this with the proper source data.
- */
- fs_reg src = vgrf(glsl_type::float_type);
- int mlen = 1; /* one reg unless overriden */
- fs_inst *inst;
+ fs_reg dst_xy = bld.vgrf(BRW_REGISTER_TYPE_F, 2);
+ const glsl_interp_qualifier interpolation =
+ (glsl_interp_qualifier) instr->variables[0]->var->data.interpolation;
switch (instr->intrinsic) {
case nir_intrinsic_interp_var_at_centroid:
- inst = emit(FS_OPCODE_INTERPOLATE_AT_CENTROID, dst_xy, src, fs_reg(0u));
+ emit_pixel_interpolater_send(bld,
+ FS_OPCODE_INTERPOLATE_AT_CENTROID,
+ dst_xy,
+ fs_reg(), /* src */
+ fs_reg(0u),
+ interpolation);
break;
case nir_intrinsic_interp_var_at_sample: {
- /* XXX: We should probably handle non-constant sample id's */
nir_const_value *const_sample = nir_src_as_const_value(instr->src[0]);
- assert(const_sample);
- unsigned msg_data = const_sample ? const_sample->i[0] << 4 : 0;
- inst = emit(FS_OPCODE_INTERPOLATE_AT_SAMPLE, dst_xy, src,
- fs_reg(msg_data));
+
+ if (const_sample) {
+ unsigned msg_data = const_sample->i[0] << 4;
+
+ emit_pixel_interpolater_send(bld,
+ FS_OPCODE_INTERPOLATE_AT_SAMPLE,
+ dst_xy,
+ fs_reg(), /* src */
+ fs_reg(msg_data),
+ interpolation);
+ } else {
+ const fs_reg sample_src = retype(get_nir_src(instr->src[0]),
+ BRW_REGISTER_TYPE_UD);
+
+ if (nir_src_is_dynamically_uniform(instr->src[0])) {
+ const fs_reg sample_id = bld.emit_uniformize(sample_src);
+ const fs_reg msg_data = vgrf(glsl_type::uint_type);
+ bld.exec_all().group(1, 0).SHL(msg_data, sample_id, fs_reg(4u));
+ emit_pixel_interpolater_send(bld,
+ FS_OPCODE_INTERPOLATE_AT_SAMPLE,
+ dst_xy,
+ fs_reg(), /* src */
+ msg_data,
+ interpolation);
+ } else {
+ /* Make a loop that sends a message to the pixel interpolater
+ * for the sample number in each live channel. If there are
+ * multiple channels with the same sample number then these
+ * will be handled simultaneously with a single interation of
+ * the loop.
+ */
+ bld.emit(BRW_OPCODE_DO);
+
+ /* Get the next live sample number into sample_id_reg */
+ const fs_reg sample_id = bld.emit_uniformize(sample_src);
+
+ /* Set the flag register so that we can perform the send
+ * message on all channels that have the same sample number
+ */
+ bld.CMP(bld.null_reg_ud(),
+ sample_src, sample_id,
+ BRW_CONDITIONAL_EQ);
+ const fs_reg msg_data = vgrf(glsl_type::uint_type);
+ bld.exec_all().group(1, 0).SHL(msg_data, sample_id, fs_reg(4u));
+ fs_inst *inst =
+ emit_pixel_interpolater_send(bld,
+ FS_OPCODE_INTERPOLATE_AT_SAMPLE,
+ dst_xy,
+ fs_reg(), /* src */
+ msg_data,
+ interpolation);
+ set_predicate(BRW_PREDICATE_NORMAL, inst);
+
+ /* Continue the loop if there are any live channels left */
+ set_predicate_inv(BRW_PREDICATE_NORMAL,
+ true, /* inverse */
+ bld.emit(BRW_OPCODE_WHILE));
+ }
+ }
+
break;
}
unsigned off_x = MIN2((int)(const_offset->f[0] * 16), 7) & 0xf;
unsigned off_y = MIN2((int)(const_offset->f[1] * 16), 7) & 0xf;
- inst = emit(FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET, dst_xy, src,
- fs_reg(off_x | (off_y << 4)));
+ emit_pixel_interpolater_send(bld,
+ FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET,
+ dst_xy,
+ fs_reg(), /* src */
+ fs_reg(off_x | (off_y << 4)),
+ interpolation);
} else {
- src = vgrf(glsl_type::ivec2_type);
+ fs_reg src = vgrf(glsl_type::ivec2_type);
fs_reg offset_src = retype(get_nir_src(instr->src[0]),
BRW_REGISTER_TYPE_F);
for (int i = 0; i < 2; i++) {
fs_reg temp = vgrf(glsl_type::float_type);
- emit(MUL(temp, offset(offset_src, i), fs_reg(16.0f)));
+ bld.MUL(temp, offset(offset_src, bld, i), fs_reg(16.0f));
fs_reg itemp = vgrf(glsl_type::int_type);
- emit(MOV(itemp, temp)); /* float to int */
+ bld.MOV(itemp, temp); /* float to int */
/* Clamp the upper end of the range to +7/16.
* ARB_gpu_shader5 requires that we support a maximum offset
* implementation-dependent constant
* FRAGMENT_INTERPOLATION_OFFSET_BITS"
*/
-
- emit(BRW_OPCODE_SEL, offset(src, i), itemp, fs_reg(7))
- ->conditional_mod = BRW_CONDITIONAL_L; /* min(src2, 7) */
+ set_condmod(BRW_CONDITIONAL_L,
+ bld.SEL(offset(src, bld, i), itemp, fs_reg(7)));
}
- mlen = 2;
- inst = emit(FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET, dst_xy, src,
- fs_reg(0u));
+ const enum opcode opcode = FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET;
+ emit_pixel_interpolater_send(bld,
+ opcode,
+ dst_xy,
+ src,
+ fs_reg(0u),
+ interpolation);
}
break;
}
unreachable("Invalid intrinsic");
}
- inst->mlen = mlen;
- inst->regs_written = 2; /* 2 floats per slot returned */
- inst->pi_noperspective = instr->variables[0]->var->data.interpolation ==
- INTERP_QUALIFIER_NOPERSPECTIVE;
-
for (unsigned j = 0; j < instr->num_components; j++) {
fs_reg src = interp_reg(instr->variables[0]->var->data.location, j);
src.type = dest.type;
- emit(FS_OPCODE_LINTERP, dest, dst_xy, src);
- dest = offset(dest, 1);
+ bld.emit(FS_OPCODE_LINTERP, dest, dst_xy, src);
+ dest = offset(dest, bld, 1);
+ }
+ break;
+ }
+
+ case nir_intrinsic_store_ssbo_indirect:
+ has_indirect = true;
+ /* fallthrough */
+ case nir_intrinsic_store_ssbo: {
+ assert(devinfo->gen >= 7);
+
+ /* Block index */
+ fs_reg surf_index;
+ nir_const_value *const_uniform_block =
+ nir_src_as_const_value(instr->src[1]);
+ if (const_uniform_block) {
+ unsigned index = stage_prog_data->binding_table.ssbo_start +
+ const_uniform_block->u[0];
+ surf_index = fs_reg(index);
+ brw_mark_surface_used(prog_data, index);
+ } else {
+ surf_index = vgrf(glsl_type::uint_type);
+ bld.ADD(surf_index, get_nir_src(instr->src[1]),
+ fs_reg(stage_prog_data->binding_table.ssbo_start));
+
+ brw_mark_surface_used(prog_data,
+ stage_prog_data->binding_table.ssbo_start +
+ nir->info.num_ssbos - 1);
+ }
+
+ /* Value */
+ fs_reg val_reg = get_nir_src(instr->src[0]);
+
+ /* Writemask */
+ unsigned writemask = instr->const_index[1];
+
+ /* Combine groups of consecutive enabled channels in one write
+ * message. We use ffs to find the first enabled channel and then ffs on
+ * the bit-inverse, down-shifted writemask to determine the length of
+ * the block of enabled bits.
+ */
+ while (writemask) {
+ unsigned first_component = ffs(writemask) - 1;
+ unsigned length = ffs(~(writemask >> first_component)) - 1;
+ fs_reg offset_reg;
+
+ if (!has_indirect) {
+ offset_reg = fs_reg(instr->const_index[0] + 4 * first_component);
+ } else {
+ offset_reg = vgrf(glsl_type::uint_type);
+ bld.ADD(offset_reg,
+ retype(get_nir_src(instr->src[2]), BRW_REGISTER_TYPE_UD),
+ fs_reg(4 * first_component));
+ }
+
+ emit_untyped_write(bld, surf_index, offset_reg,
+ offset(val_reg, bld, first_component),
+ 1 /* dims */, length,
+ BRW_PREDICATE_NONE);
+
+ /* Clear the bits in the writemask that we just wrote, then try
+ * again to see if more channels are left.
+ */
+ writemask &= (15 << (first_component + length));
}
break;
}
case nir_intrinsic_store_output: {
fs_reg src = get_nir_src(instr->src[0]);
unsigned index = 0;
- for (int i = 0; i < instr->const_index[1]; i++) {
- for (unsigned j = 0; j < instr->num_components; j++) {
- fs_reg new_dest = offset(retype(nir_outputs, src.type),
- instr->const_index[0] + index);
- if (has_indirect)
- src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[1]));
- index++;
- emit(MOV(new_dest, src));
- src = offset(src, 1);
- }
+ for (unsigned j = 0; j < instr->num_components; j++) {
+ fs_reg new_dest = offset(retype(nir_outputs, src.type), bld,
+ instr->const_index[0] + index);
+ if (has_indirect)
+ src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[1]));
+ index++;
+ bld.MOV(new_dest, src);
+ src = offset(src, bld, 1);
}
break;
}
+ case nir_intrinsic_barrier:
+ emit_barrier();
+ if (stage == MESA_SHADER_COMPUTE)
+ ((struct brw_cs_prog_data *) prog_data)->uses_barrier = true;
+ break;
+
+ case nir_intrinsic_load_local_invocation_id:
+ case nir_intrinsic_load_work_group_id: {
+ gl_system_value sv = nir_system_value_from_intrinsic(instr->intrinsic);
+ fs_reg val = nir_system_values[sv];
+ assert(val.file != BAD_FILE);
+ dest.type = val.type;
+ for (unsigned i = 0; i < 3; i++)
+ bld.MOV(offset(dest, bld, i), offset(val, bld, i));
+ break;
+ }
+
+ case nir_intrinsic_ssbo_atomic_add:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_ADD, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_imin:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_IMIN, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_umin:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_UMIN, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_imax:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_IMAX, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_umax:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_UMAX, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_and:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_AND, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_or:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_OR, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_xor:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_XOR, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_exchange:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_MOV, instr);
+ break;
+ case nir_intrinsic_ssbo_atomic_comp_swap:
+ nir_emit_ssbo_atomic(bld, BRW_AOP_CMPWR, instr);
+ break;
+
+ case nir_intrinsic_get_buffer_size: {
+ nir_const_value *const_uniform_block = nir_src_as_const_value(instr->src[0]);
+ unsigned ssbo_index = const_uniform_block ? const_uniform_block->u[0] : 0;
+ int reg_width = dispatch_width / 8;
+
+ /* Set LOD = 0 */
+ fs_reg source = fs_reg(0);
+
+ int mlen = 1 * reg_width;
+ fs_reg src_payload = fs_reg(GRF, alloc.allocate(mlen),
+ BRW_REGISTER_TYPE_UD);
+ bld.LOAD_PAYLOAD(src_payload, &source, 1, 0);
+
+ const unsigned index = prog_data->binding_table.ssbo_start + ssbo_index;
+ fs_inst *inst = bld.emit(FS_OPCODE_GET_BUFFER_SIZE, dest,
+ src_payload, fs_reg(index));
+ inst->header_size = 0;
+ inst->mlen = mlen;
+ bld.emit(inst);
+
+ brw_mark_surface_used(prog_data, index);
+ break;
+ }
+
+ case nir_intrinsic_load_num_work_groups: {
+ assert(devinfo->gen >= 7);
+ assert(stage == MESA_SHADER_COMPUTE);
+
+ struct brw_cs_prog_data *cs_prog_data =
+ (struct brw_cs_prog_data *) prog_data;
+ const unsigned surface =
+ cs_prog_data->binding_table.work_groups_start;
+
+ cs_prog_data->uses_num_work_groups = true;
+
+ fs_reg surf_index = fs_reg(surface);
+ brw_mark_surface_used(prog_data, surface);
+
+ /* Read the 3 GLuint components of gl_NumWorkGroups */
+ for (unsigned i = 0; i < 3; i++) {
+ fs_reg read_result =
+ emit_untyped_read(bld, surf_index,
+ fs_reg(i << 2),
+ 1 /* dims */, 1 /* size */,
+ BRW_PREDICATE_NONE);
+ read_result.type = dest.type;
+ bld.MOV(dest, read_result);
+ dest = offset(dest, bld, 1);
+ }
+ break;
+ }
+
+ case nir_intrinsic_emit_vertex_with_counter:
+ emit_gs_vertex(instr->src[0], instr->const_index[0]);
+ break;
+
+ case nir_intrinsic_end_primitive_with_counter:
+ emit_gs_end_primitive(instr->src[0]);
+ break;
+
+ case nir_intrinsic_set_vertex_count:
+ bld.MOV(this->final_gs_vertex_count, get_nir_src(instr->src[0]));
+ break;
+
default:
unreachable("unknown intrinsic");
}
}
void
-fs_visitor::nir_emit_texture(nir_tex_instr *instr)
+fs_visitor::nir_emit_ssbo_atomic(const fs_builder &bld,
+ int op, nir_intrinsic_instr *instr)
+{
+ fs_reg dest;
+ if (nir_intrinsic_infos[instr->intrinsic].has_dest)
+ dest = get_nir_dest(instr->dest);
+
+ fs_reg surface;
+ nir_const_value *const_surface = nir_src_as_const_value(instr->src[0]);
+ if (const_surface) {
+ unsigned surf_index = stage_prog_data->binding_table.ssbo_start +
+ const_surface->u[0];
+ surface = fs_reg(surf_index);
+ brw_mark_surface_used(prog_data, surf_index);
+ } else {
+ surface = vgrf(glsl_type::uint_type);
+ bld.ADD(surface, get_nir_src(instr->src[0]),
+ fs_reg(stage_prog_data->binding_table.ssbo_start));
+
+ /* Assume this may touch any SSBO. This is the same we do for other
+ * UBO/SSBO accesses with non-constant surface.
+ */
+ brw_mark_surface_used(prog_data,
+ stage_prog_data->binding_table.ssbo_start +
+ nir->info.num_ssbos - 1);
+ }
+
+ fs_reg offset = get_nir_src(instr->src[1]);
+ fs_reg data1 = get_nir_src(instr->src[2]);
+ fs_reg data2;
+ if (op == BRW_AOP_CMPWR)
+ data2 = get_nir_src(instr->src[3]);
+
+ /* Emit the actual atomic operation operation */
+
+ fs_reg atomic_result =
+ surface_access::emit_untyped_atomic(bld, surface, offset,
+ data1, data2,
+ 1 /* dims */, 1 /* rsize */,
+ op,
+ BRW_PREDICATE_NONE);
+ dest.type = atomic_result.type;
+ bld.MOV(dest, atomic_result);
+}
+
+void
+fs_visitor::nir_emit_texture(const fs_builder &bld, nir_tex_instr *instr)
{
unsigned sampler = instr->sampler_index;
fs_reg sampler_reg(sampler);
- /* FINISHME: We're failing to recompile our programs when the sampler is
- * updated. This only matters for the texture rectangle scale parameters
- * (pre-gen6, or gen6+ with GL_CLAMP).
- */
- int texunit = prog->SamplerUnits[sampler];
-
int gather_component = instr->component;
bool is_rect = instr->sampler_dim == GLSL_SAMPLER_DIM_RECT;
bool is_cube_array = instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE &&
instr->is_array;
- int lod_components = 0, offset_components = 0;
+ int lod_components = 0;
+ int UNUSED offset_components = 0;
fs_reg coordinate, shadow_comparitor, lod, lod2, sample_index, mcs, tex_offset;
/* Emit code to evaluate the actual indexing expression */
sampler_reg = vgrf(glsl_type::uint_type);
- emit(ADD(sampler_reg, src, fs_reg(sampler)))
- ->force_writemask_all = true;
+ bld.ADD(sampler_reg, src, fs_reg(sampler));
+ sampler_reg = bld.emit_uniformize(sampler_reg);
break;
}
}
}
- enum glsl_base_type dest_base_type;
- switch (instr->dest_type) {
- case nir_type_float:
- dest_base_type = GLSL_TYPE_FLOAT;
- break;
- case nir_type_int:
- dest_base_type = GLSL_TYPE_INT;
- break;
- case nir_type_unsigned:
- dest_base_type = GLSL_TYPE_UINT;
- break;
- default:
- unreachable("bad type");
- }
+ enum glsl_base_type dest_base_type =
+ brw_glsl_base_type_for_nir_type (instr->dest_type);
const glsl_type *dest_type =
glsl_type::get_instance(dest_base_type, nir_tex_instr_dest_size(instr),
case nir_texop_txf_ms: op = ir_txf_ms; break;
case nir_texop_txl: op = ir_txl; break;
case nir_texop_txs: op = ir_txs; break;
+ case nir_texop_texture_samples: {
+ fs_reg dst = retype(get_nir_dest(instr->dest), BRW_REGISTER_TYPE_D);
+ fs_inst *inst = bld.emit(SHADER_OPCODE_SAMPLEINFO, dst,
+ bld.vgrf(BRW_REGISTER_TYPE_D, 1),
+ sampler_reg);
+ inst->mlen = 1;
+ inst->header_size = 1;
+ inst->base_mrf = -1;
+ return;
+ }
default:
unreachable("unknown texture opcode");
}
emit_texture(op, dest_type, coordinate, instr->coord_components,
shadow_comparitor, lod, lod2, lod_components, sample_index,
tex_offset, mcs, gather_component,
- is_cube_array, is_rect, sampler, sampler_reg, texunit);
+ is_cube_array, is_rect, sampler, sampler_reg);
fs_reg dest = get_nir_dest(instr->dest);
dest.type = this->result.type;
unsigned num_components = nir_tex_instr_dest_size(instr);
- emit_percomp(MOV(dest, this->result), (1 << num_components) - 1);
+ emit_percomp(bld, fs_inst(BRW_OPCODE_MOV, bld.dispatch_width(),
+ dest, this->result),
+ (1 << num_components) - 1);
}
void
-fs_visitor::nir_emit_jump(nir_jump_instr *instr)
+fs_visitor::nir_emit_jump(const fs_builder &bld, nir_jump_instr *instr)
{
switch (instr->type) {
case nir_jump_break:
- emit(BRW_OPCODE_BREAK);
+ bld.emit(BRW_OPCODE_BREAK);
break;
case nir_jump_continue:
- emit(BRW_OPCODE_CONTINUE);
+ bld.emit(BRW_OPCODE_CONTINUE);
break;
case nir_jump_return:
default:
projects / mesa.git / blobdiff