| /* |
| * Copyright © 2014 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| * |
| * Authors: |
| * Connor Abbott (cwabbott0@gmail.com) |
| * |
| */ |
| |
| #include "glsl_to_nir.h" |
| #include "ir_visitor.h" |
| #include "ir_hierarchical_visitor.h" |
| #include "ir.h" |
| |
| /* |
| * pass to lower GLSL IR to NIR |
| * |
| * This will lower variable dereferences to loads/stores of corresponding |
| * variables in NIR - the variables will be converted to registers in a later |
| * pass. |
| */ |
| |
| namespace { |
| |
| class nir_visitor : public ir_visitor |
| { |
| public: |
| nir_visitor(nir_shader *shader, gl_shader_stage stage); |
| ~nir_visitor(); |
| |
| virtual void visit(ir_variable *); |
| virtual void visit(ir_function *); |
| virtual void visit(ir_function_signature *); |
| virtual void visit(ir_loop *); |
| virtual void visit(ir_if *); |
| virtual void visit(ir_discard *); |
| virtual void visit(ir_loop_jump *); |
| virtual void visit(ir_return *); |
| virtual void visit(ir_call *); |
| virtual void visit(ir_assignment *); |
| virtual void visit(ir_emit_vertex *); |
| virtual void visit(ir_end_primitive *); |
| virtual void visit(ir_expression *); |
| virtual void visit(ir_swizzle *); |
| virtual void visit(ir_texture *); |
| virtual void visit(ir_constant *); |
| virtual void visit(ir_dereference_variable *); |
| virtual void visit(ir_dereference_record *); |
| virtual void visit(ir_dereference_array *); |
| virtual void visit(ir_barrier *); |
| |
| void create_function(ir_function *ir); |
| |
| private: |
| void create_overload(ir_function_signature *ir, nir_function *function); |
| void add_instr(nir_instr *instr, unsigned num_components); |
| nir_src evaluate_rvalue(ir_rvalue *ir); |
| |
| nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src *srcs); |
| nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1); |
| nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1, |
| nir_src src2); |
| nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1, |
| nir_src src2, nir_src src3); |
| |
| bool supports_ints; |
| |
| nir_shader *shader; |
| gl_shader_stage stage; |
| nir_function_impl *impl; |
| exec_list *cf_node_list; |
| nir_instr *result; /* result of the expression tree last visited */ |
| |
| nir_deref_var *evaluate_deref(nir_instr *mem_ctx, ir_instruction *ir); |
| |
| /* the head of the dereference chain we're creating */ |
| nir_deref_var *deref_head; |
| /* the tail of the dereference chain we're creating */ |
| nir_deref *deref_tail; |
| |
| nir_variable *var; /* variable created by ir_variable visitor */ |
| |
| /* whether the IR we're operating on is per-function or global */ |
| bool is_global; |
| |
| /* map of ir_variable -> nir_variable */ |
| struct hash_table *var_table; |
| |
| /* map of ir_function_signature -> nir_function_overload */ |
| struct hash_table *overload_table; |
| }; |
| |
| /* |
| * This visitor runs before the main visitor, calling create_function() for |
| * each function so that the main visitor can resolve forward references in |
| * calls. |
| */ |
| |
| class nir_function_visitor : public ir_hierarchical_visitor |
| { |
| public: |
| nir_function_visitor(nir_visitor *v) : visitor(v) |
| { |
| } |
| virtual ir_visitor_status visit_enter(ir_function *); |
| |
| private: |
| nir_visitor *visitor; |
| }; |
| |
| }; /* end of anonymous namespace */ |
| |
| nir_shader * |
| glsl_to_nir(struct gl_shader *sh, const nir_shader_compiler_options *options) |
| { |
| nir_shader *shader = nir_shader_create(NULL, options); |
| |
| nir_visitor v1(shader, sh->Stage); |
| nir_function_visitor v2(&v1); |
| v2.run(sh->ir); |
| visit_exec_list(sh->ir, &v1); |
| |
| return shader; |
| } |
| |
| nir_visitor::nir_visitor(nir_shader *shader, gl_shader_stage stage) |
| { |
| this->supports_ints = shader->options->native_integers; |
| this->shader = shader; |
| this->stage = stage; |
| this->is_global = true; |
| this->var_table = _mesa_hash_table_create(NULL, _mesa_hash_pointer, |
| _mesa_key_pointer_equal); |
| this->overload_table = _mesa_hash_table_create(NULL, _mesa_hash_pointer, |
| _mesa_key_pointer_equal); |
| } |
| |
| nir_visitor::~nir_visitor() |
| { |
| _mesa_hash_table_destroy(this->var_table, NULL); |
| _mesa_hash_table_destroy(this->overload_table, NULL); |
| } |
| |
| nir_deref_var * |
| nir_visitor::evaluate_deref(nir_instr *mem_ctx, ir_instruction *ir) |
| { |
| ir->accept(this); |
| ralloc_steal(mem_ctx, this->deref_head); |
| return this->deref_head; |
| } |
| |
| static nir_constant * |
| constant_copy(ir_constant *ir, void *mem_ctx) |
| { |
| if (ir == NULL) |
| return NULL; |
| |
| nir_constant *ret = ralloc(mem_ctx, nir_constant); |
| |
| unsigned total_elems = ir->type->components(); |
| unsigned i; |
| switch (ir->type->base_type) { |
| case GLSL_TYPE_UINT: |
| for (i = 0; i < total_elems; i++) |
| ret->value.u[i] = ir->value.u[i]; |
| break; |
| |
| case GLSL_TYPE_INT: |
| for (i = 0; i < total_elems; i++) |
| ret->value.i[i] = ir->value.i[i]; |
| break; |
| |
| case GLSL_TYPE_FLOAT: |
| for (i = 0; i < total_elems; i++) |
| ret->value.f[i] = ir->value.f[i]; |
| break; |
| |
| case GLSL_TYPE_BOOL: |
| for (i = 0; i < total_elems; i++) |
| ret->value.b[i] = ir->value.b[i]; |
| break; |
| |
| case GLSL_TYPE_STRUCT: |
| ret->elements = ralloc_array(mem_ctx, nir_constant *, |
| ir->type->length); |
| i = 0; |
| foreach_in_list(ir_constant, field, &ir->components) { |
| ret->elements[i] = constant_copy(field, mem_ctx); |
| i++; |
| } |
| break; |
| |
| case GLSL_TYPE_ARRAY: |
| ret->elements = ralloc_array(mem_ctx, nir_constant *, |
| ir->type->length); |
| |
| for (i = 0; i < ir->type->length; i++) |
| ret->elements[i] = constant_copy(ir->array_elements[i], mem_ctx); |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| return ret; |
| } |
| |
| void |
| nir_visitor::visit(ir_variable *ir) |
| { |
| nir_variable *var = ralloc(shader, nir_variable); |
| var->type = ir->type; |
| var->name = ralloc_strdup(var, ir->name); |
| |
| if (ir->is_interface_instance() && ir->get_max_ifc_array_access() != NULL) { |
| unsigned size = ir->get_interface_type()->length; |
| var->max_ifc_array_access = ralloc_array(var, unsigned, size); |
| memcpy(var->max_ifc_array_access, ir->get_max_ifc_array_access(), |
| size * sizeof(unsigned)); |
| } else { |
| var->max_ifc_array_access = NULL; |
| } |
| |
| var->data.read_only = ir->data.read_only; |
| var->data.centroid = ir->data.centroid; |
| var->data.sample = ir->data.sample; |
| var->data.invariant = ir->data.invariant; |
| var->data.location = ir->data.location; |
| |
| switch(ir->data.mode) { |
| case ir_var_auto: |
| case ir_var_temporary: |
| if (is_global) |
| var->data.mode = nir_var_global; |
| else |
| var->data.mode = nir_var_local; |
| break; |
| |
| case ir_var_function_in: |
| case ir_var_function_out: |
| case ir_var_function_inout: |
| case ir_var_const_in: |
| var->data.mode = nir_var_local; |
| break; |
| |
| case ir_var_shader_in: |
| if (stage == MESA_SHADER_FRAGMENT && |
| ir->data.location == VARYING_SLOT_FACE) { |
| /* For whatever reason, GLSL IR makes gl_FrontFacing an input */ |
| var->data.location = SYSTEM_VALUE_FRONT_FACE; |
| var->data.mode = nir_var_system_value; |
| } else { |
| var->data.mode = nir_var_shader_in; |
| } |
| break; |
| |
| case ir_var_shader_out: |
| var->data.mode = nir_var_shader_out; |
| break; |
| |
| case ir_var_uniform: |
| var->data.mode = nir_var_uniform; |
| break; |
| |
| case ir_var_shader_storage: |
| var->data.mode = nir_var_shader_storage; |
| break; |
| |
| case ir_var_system_value: |
| var->data.mode = nir_var_system_value; |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| var->data.interpolation = ir->data.interpolation; |
| var->data.origin_upper_left = ir->data.origin_upper_left; |
| var->data.pixel_center_integer = ir->data.pixel_center_integer; |
| var->data.explicit_location = ir->data.explicit_location; |
| var->data.explicit_index = ir->data.explicit_index; |
| var->data.explicit_binding = ir->data.explicit_binding; |
| var->data.has_initializer = ir->data.has_initializer; |
| var->data.is_unmatched_generic_inout = ir->data.is_unmatched_generic_inout; |
| var->data.location_frac = ir->data.location_frac; |
| var->data.from_named_ifc_block_array = ir->data.from_named_ifc_block_array; |
| var->data.from_named_ifc_block_nonarray = ir->data.from_named_ifc_block_nonarray; |
| |
| switch (ir->data.depth_layout) { |
| case ir_depth_layout_none: |
| var->data.depth_layout = nir_depth_layout_none; |
| break; |
| case ir_depth_layout_any: |
| var->data.depth_layout = nir_depth_layout_any; |
| break; |
| case ir_depth_layout_greater: |
| var->data.depth_layout = nir_depth_layout_greater; |
| break; |
| case ir_depth_layout_less: |
| var->data.depth_layout = nir_depth_layout_less; |
| break; |
| case ir_depth_layout_unchanged: |
| var->data.depth_layout = nir_depth_layout_unchanged; |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| |
| var->data.index = ir->data.index; |
| var->data.binding = ir->data.binding; |
| /* XXX Get rid of buffer_index */ |
| var->data.atomic.buffer_index = ir->data.binding; |
| var->data.atomic.offset = ir->data.atomic.offset; |
| var->data.image.read_only = ir->data.image_read_only; |
| var->data.image.write_only = ir->data.image_write_only; |
| var->data.image.coherent = ir->data.image_coherent; |
| var->data.image._volatile = ir->data.image_volatile; |
| var->data.image.restrict_flag = ir->data.image_restrict; |
| var->data.image.format = ir->data.image_format; |
| var->data.max_array_access = ir->data.max_array_access; |
| |
| var->num_state_slots = ir->get_num_state_slots(); |
| if (var->num_state_slots > 0) { |
| var->state_slots = ralloc_array(var, nir_state_slot, |
| var->num_state_slots); |
| |
| ir_state_slot *state_slots = ir->get_state_slots(); |
| for (unsigned i = 0; i < var->num_state_slots; i++) { |
| for (unsigned j = 0; j < 5; j++) |
| var->state_slots[i].tokens[j] = state_slots[i].tokens[j]; |
| var->state_slots[i].swizzle = state_slots[i].swizzle; |
| } |
| } else { |
| var->state_slots = NULL; |
| } |
| |
| var->constant_initializer = constant_copy(ir->constant_initializer, var); |
| |
| var->interface_type = ir->get_interface_type(); |
| |
| switch (var->data.mode) { |
| case nir_var_local: |
| exec_list_push_tail(&impl->locals, &var->node); |
| break; |
| |
| case nir_var_global: |
| exec_list_push_tail(&shader->globals, &var->node); |
| break; |
| |
| case nir_var_shader_in: |
| exec_list_push_tail(&shader->inputs, &var->node); |
| break; |
| |
| case nir_var_shader_out: |
| exec_list_push_tail(&shader->outputs, &var->node); |
| break; |
| |
| case nir_var_uniform: |
| case nir_var_shader_storage: |
| exec_list_push_tail(&shader->uniforms, &var->node); |
| break; |
| |
| case nir_var_system_value: |
| exec_list_push_tail(&shader->system_values, &var->node); |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| _mesa_hash_table_insert(var_table, ir, var); |
| this->var = var; |
| } |
| |
| ir_visitor_status |
| nir_function_visitor::visit_enter(ir_function *ir) |
| { |
| visitor->create_function(ir); |
| return visit_continue_with_parent; |
| } |
| |
| |
| void |
| nir_visitor::create_function(ir_function *ir) |
| { |
| nir_function *func = nir_function_create(this->shader, ir->name); |
| foreach_in_list(ir_function_signature, sig, &ir->signatures) { |
| create_overload(sig, func); |
| } |
| } |
| |
| |
| |
| void |
| nir_visitor::create_overload(ir_function_signature *ir, nir_function *function) |
| { |
| if (ir->is_intrinsic) |
| return; |
| |
| nir_function_overload *overload = nir_function_overload_create(function); |
| |
| unsigned num_params = ir->parameters.length(); |
| overload->num_params = num_params; |
| overload->params = ralloc_array(shader, nir_parameter, num_params); |
| |
| unsigned i = 0; |
| foreach_in_list(ir_variable, param, &ir->parameters) { |
| switch (param->data.mode) { |
| case ir_var_function_in: |
| overload->params[i].param_type = nir_parameter_in; |
| break; |
| |
| case ir_var_function_out: |
| overload->params[i].param_type = nir_parameter_out; |
| break; |
| |
| case ir_var_function_inout: |
| overload->params[i].param_type = nir_parameter_inout; |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| overload->params[i].type = param->type; |
| i++; |
| } |
| |
| overload->return_type = ir->return_type; |
| |
| _mesa_hash_table_insert(this->overload_table, ir, overload); |
| } |
| |
| void |
| nir_visitor::visit(ir_function *ir) |
| { |
| foreach_in_list(ir_function_signature, sig, &ir->signatures) |
| sig->accept(this); |
| } |
| |
| void |
| nir_visitor::visit(ir_function_signature *ir) |
| { |
| if (ir->is_intrinsic) |
| return; |
| |
| struct hash_entry *entry = |
| _mesa_hash_table_search(this->overload_table, ir); |
| |
| assert(entry); |
| nir_function_overload *overload = (nir_function_overload *) entry->data; |
| |
| if (ir->is_defined) { |
| nir_function_impl *impl = nir_function_impl_create(overload); |
| this->impl = impl; |
| |
| unsigned num_params = overload->num_params; |
| impl->num_params = num_params; |
| impl->params = ralloc_array(this->shader, nir_variable *, num_params); |
| unsigned i = 0; |
| foreach_in_list(ir_variable, param, &ir->parameters) { |
| param->accept(this); |
| impl->params[i] = this->var; |
| i++; |
| } |
| |
| if (overload->return_type == glsl_type::void_type) { |
| impl->return_var = NULL; |
| } else { |
| impl->return_var = ralloc(this->shader, nir_variable); |
| impl->return_var->name = ralloc_strdup(impl->return_var, |
| "return_var"); |
| impl->return_var->type = overload->return_type; |
| } |
| |
| this->is_global = false; |
| |
| this->cf_node_list = &impl->body; |
| visit_exec_list(&ir->body, this); |
| |
| this->is_global = true; |
| } else { |
| overload->impl = NULL; |
| } |
| } |
| |
| void |
| nir_visitor::visit(ir_loop *ir) |
| { |
| exec_list *old_list = this->cf_node_list; |
| |
| nir_loop *loop = nir_loop_create(this->shader); |
| nir_cf_node_insert_end(old_list, &loop->cf_node); |
| this->cf_node_list = &loop->body; |
| visit_exec_list(&ir->body_instructions, this); |
| |
| this->cf_node_list = old_list; |
| } |
| |
| void |
| nir_visitor::visit(ir_if *ir) |
| { |
| nir_src condition = evaluate_rvalue(ir->condition); |
| |
| exec_list *old_list = this->cf_node_list; |
| |
| nir_if *if_stmt = nir_if_create(this->shader); |
| if_stmt->condition = condition; |
| nir_cf_node_insert_end(old_list, &if_stmt->cf_node); |
| |
| this->cf_node_list = &if_stmt->then_list; |
| visit_exec_list(&ir->then_instructions, this); |
| |
| this->cf_node_list = &if_stmt->else_list; |
| visit_exec_list(&ir->else_instructions, this); |
| |
| this->cf_node_list = old_list; |
| } |
| |
| void |
| nir_visitor::visit(ir_discard *ir) |
| { |
| /* |
| * discards aren't treated as control flow, because before we lower them |
| * they can appear anywhere in the shader and the stuff after them may still |
| * be executed (yay, crazy GLSL rules!). However, after lowering, all the |
| * discards will be immediately followed by a return. |
| */ |
| |
| nir_intrinsic_instr *discard; |
| if (ir->condition) { |
| discard = nir_intrinsic_instr_create(this->shader, |
| nir_intrinsic_discard_if); |
| discard->src[0] = evaluate_rvalue(ir->condition); |
| } else { |
| discard = nir_intrinsic_instr_create(this->shader, nir_intrinsic_discard); |
| } |
| nir_instr_insert_after_cf_list(this->cf_node_list, &discard->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_emit_vertex *ir) |
| { |
| nir_intrinsic_instr *instr = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_emit_vertex); |
| instr->const_index[0] = ir->stream_id(); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_end_primitive *ir) |
| { |
| nir_intrinsic_instr *instr = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_end_primitive); |
| instr->const_index[0] = ir->stream_id(); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_loop_jump *ir) |
| { |
| nir_jump_type type; |
| switch (ir->mode) { |
| case ir_loop_jump::jump_break: |
| type = nir_jump_break; |
| break; |
| case ir_loop_jump::jump_continue: |
| type = nir_jump_continue; |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| |
| nir_jump_instr *instr = nir_jump_instr_create(this->shader, type); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_return *ir) |
| { |
| if (ir->value != NULL) { |
| nir_intrinsic_instr *copy = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_copy_var); |
| |
| copy->variables[0] = nir_deref_var_create(copy, this->impl->return_var); |
| copy->variables[1] = evaluate_deref(©->instr, ir->value); |
| } |
| |
| nir_jump_instr *instr = nir_jump_instr_create(this->shader, nir_jump_return); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_call *ir) |
| { |
| if (ir->callee->is_intrinsic) { |
| nir_intrinsic_op op; |
| if (strcmp(ir->callee_name(), "__intrinsic_atomic_read") == 0) { |
| op = nir_intrinsic_atomic_counter_read_var; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_atomic_increment") == 0) { |
| op = nir_intrinsic_atomic_counter_inc_var; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_atomic_predecrement") == 0) { |
| op = nir_intrinsic_atomic_counter_dec_var; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_load") == 0) { |
| op = nir_intrinsic_image_load; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_store") == 0) { |
| op = nir_intrinsic_image_store; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_add") == 0) { |
| op = nir_intrinsic_image_atomic_add; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_min") == 0) { |
| op = nir_intrinsic_image_atomic_min; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_max") == 0) { |
| op = nir_intrinsic_image_atomic_max; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_and") == 0) { |
| op = nir_intrinsic_image_atomic_and; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_or") == 0) { |
| op = nir_intrinsic_image_atomic_or; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_xor") == 0) { |
| op = nir_intrinsic_image_atomic_xor; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_exchange") == 0) { |
| op = nir_intrinsic_image_atomic_exchange; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) { |
| op = nir_intrinsic_image_atomic_comp_swap; |
| } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier") == 0) { |
| op = nir_intrinsic_memory_barrier; |
| } else { |
| unreachable("not reached"); |
| } |
| |
| nir_intrinsic_instr *instr = nir_intrinsic_instr_create(shader, op); |
| |
| switch (op) { |
| case nir_intrinsic_atomic_counter_read_var: |
| case nir_intrinsic_atomic_counter_inc_var: |
| case nir_intrinsic_atomic_counter_dec_var: { |
| ir_dereference *param = |
| (ir_dereference *) ir->actual_parameters.get_head(); |
| instr->variables[0] = evaluate_deref(&instr->instr, param); |
| nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL); |
| break; |
| } |
| 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: { |
| nir_ssa_undef_instr *instr_undef = |
| nir_ssa_undef_instr_create(shader, 1); |
| nir_instr_insert_after_cf_list(this->cf_node_list, |
| &instr_undef->instr); |
| |
| /* Set the image variable dereference. */ |
| exec_node *param = ir->actual_parameters.get_head(); |
| ir_dereference *image = (ir_dereference *)param; |
| const glsl_type *type = |
| image->variable_referenced()->type->without_array(); |
| |
| instr->variables[0] = evaluate_deref(&instr->instr, image); |
| param = param->get_next(); |
| |
| /* Set the address argument, extending the coordinate vector to four |
| * components. |
| */ |
| const nir_src src_addr = evaluate_rvalue((ir_dereference *)param); |
| nir_alu_instr *instr_addr = nir_alu_instr_create(shader, nir_op_vec4); |
| nir_ssa_dest_init(&instr_addr->instr, &instr_addr->dest.dest, 4, NULL); |
| |
| for (int i = 0; i < 4; i++) { |
| if (i < type->coordinate_components()) { |
| instr_addr->src[i].src = src_addr; |
| instr_addr->src[i].swizzle[0] = i; |
| } else { |
| instr_addr->src[i].src = nir_src_for_ssa(&instr_undef->def); |
| } |
| } |
| |
| nir_instr_insert_after_cf_list(cf_node_list, &instr_addr->instr); |
| instr->src[0] = nir_src_for_ssa(&instr_addr->dest.dest.ssa); |
| param = param->get_next(); |
| |
| /* Set the sample argument, which is undefined for single-sample |
| * images. |
| */ |
| if (type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS) { |
| instr->src[1] = evaluate_rvalue((ir_dereference *)param); |
| param = param->get_next(); |
| } else { |
| instr->src[1] = nir_src_for_ssa(&instr_undef->def); |
| } |
| |
| /* Set the intrinsic parameters. */ |
| if (!param->is_tail_sentinel()) { |
| instr->src[2] = evaluate_rvalue((ir_dereference *)param); |
| param = param->get_next(); |
| } |
| |
| if (!param->is_tail_sentinel()) { |
| instr->src[3] = evaluate_rvalue((ir_dereference *)param); |
| param = param->get_next(); |
| } |
| |
| /* Set the intrinsic destination. */ |
| if (ir->return_deref) |
| nir_ssa_dest_init(&instr->instr, &instr->dest, |
| ir->return_deref->type->vector_elements, NULL); |
| break; |
| } |
| case nir_intrinsic_memory_barrier: |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| |
| if (ir->return_deref) { |
| nir_intrinsic_instr *store_instr = |
| nir_intrinsic_instr_create(shader, nir_intrinsic_store_var); |
| store_instr->num_components = ir->return_deref->type->vector_elements; |
| |
| store_instr->variables[0] = |
| evaluate_deref(&store_instr->instr, ir->return_deref); |
| store_instr->src[0] = nir_src_for_ssa(&instr->dest.ssa); |
| |
| nir_instr_insert_after_cf_list(this->cf_node_list, |
| &store_instr->instr); |
| } |
| |
| return; |
| } |
| |
| struct hash_entry *entry = |
| _mesa_hash_table_search(this->overload_table, ir->callee); |
| assert(entry); |
| nir_function_overload *callee = (nir_function_overload *) entry->data; |
| |
| nir_call_instr *instr = nir_call_instr_create(this->shader, callee); |
| |
| unsigned i = 0; |
| foreach_in_list(ir_dereference, param, &ir->actual_parameters) { |
| instr->params[i] = evaluate_deref(&instr->instr, param); |
| i++; |
| } |
| |
| instr->return_deref = evaluate_deref(&instr->instr, ir->return_deref); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |
| |
| void |
| nir_visitor::visit(ir_assignment *ir) |
| { |
| unsigned num_components = ir->lhs->type->vector_elements; |
| |
| if ((ir->rhs->as_dereference() || ir->rhs->as_constant()) && |
| (ir->write_mask == (1 << num_components) - 1 || ir->write_mask == 0)) { |
| /* We're doing a plain-as-can-be copy, so emit a copy_var */ |
| nir_intrinsic_instr *copy = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_copy_var); |
| |
| copy->variables[0] = evaluate_deref(©->instr, ir->lhs); |
| copy->variables[1] = evaluate_deref(©->instr, ir->rhs); |
| |
| if (ir->condition) { |
| nir_if *if_stmt = nir_if_create(this->shader); |
| if_stmt->condition = evaluate_rvalue(ir->condition); |
| nir_cf_node_insert_end(this->cf_node_list, &if_stmt->cf_node); |
| nir_instr_insert_after_cf_list(&if_stmt->then_list, ©->instr); |
| } else { |
| nir_instr_insert_after_cf_list(this->cf_node_list, ©->instr); |
| } |
| return; |
| } |
| |
| assert(ir->rhs->type->is_scalar() || ir->rhs->type->is_vector()); |
| |
| ir->lhs->accept(this); |
| nir_deref_var *lhs_deref = this->deref_head; |
| nir_src src = evaluate_rvalue(ir->rhs); |
| |
| if (ir->write_mask != (1 << num_components) - 1 && ir->write_mask != 0) { |
| /* |
| * We have no good way to update only part of a variable, so just load |
| * the LHS and do a vec operation to combine the old with the new, and |
| * then store it |
| * back into the LHS. Copy propagation should get rid of the mess. |
| */ |
| |
| nir_intrinsic_instr *load = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_load_var); |
| load->num_components = ir->lhs->type->vector_elements; |
| nir_ssa_dest_init(&load->instr, &load->dest, num_components, NULL); |
| load->variables[0] = lhs_deref; |
| ralloc_steal(load, load->variables[0]); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &load->instr); |
| |
| nir_op vec_op; |
| switch (ir->lhs->type->vector_elements) { |
| case 1: vec_op = nir_op_imov; break; |
| case 2: vec_op = nir_op_vec2; break; |
| case 3: vec_op = nir_op_vec3; break; |
| case 4: vec_op = nir_op_vec4; break; |
| default: unreachable("Invalid number of components"); break; |
| } |
| nir_alu_instr *vec = nir_alu_instr_create(this->shader, vec_op); |
| nir_ssa_dest_init(&vec->instr, &vec->dest.dest, num_components, NULL); |
| vec->dest.write_mask = (1 << num_components) - 1; |
| |
| unsigned component = 0; |
| for (unsigned i = 0; i < ir->lhs->type->vector_elements; i++) { |
| if (ir->write_mask & (1 << i)) { |
| vec->src[i].src = src; |
| |
| /* GLSL IR will give us the input to the write-masked assignment |
| * in a single packed vector. So, for example, if the |
| * writemask is xzw, then we have to swizzle x -> x, y -> z, |
| * and z -> w and get the y component from the load. |
| */ |
| vec->src[i].swizzle[0] = component++; |
| } else { |
| vec->src[i].src.is_ssa = true; |
| vec->src[i].src.ssa = &load->dest.ssa; |
| vec->src[i].swizzle[0] = i; |
| } |
| } |
| |
| nir_instr_insert_after_cf_list(this->cf_node_list, &vec->instr); |
| |
| src.is_ssa = true; |
| src.ssa = &vec->dest.dest.ssa; |
| } |
| |
| nir_intrinsic_instr *store = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_store_var); |
| store->num_components = ir->lhs->type->vector_elements; |
| nir_deref *store_deref = nir_copy_deref(store, &lhs_deref->deref); |
| store->variables[0] = nir_deref_as_var(store_deref); |
| store->src[0] = src; |
| |
| if (ir->condition) { |
| nir_if *if_stmt = nir_if_create(this->shader); |
| if_stmt->condition = evaluate_rvalue(ir->condition); |
| nir_cf_node_insert_end(this->cf_node_list, &if_stmt->cf_node); |
| nir_instr_insert_after_cf_list(&if_stmt->then_list, &store->instr); |
| } else { |
| nir_instr_insert_after_cf_list(this->cf_node_list, &store->instr); |
| } |
| } |
| |
| /* |
| * Given an instruction, returns a pointer to its destination or NULL if there |
| * is no destination. |
| * |
| * Note that this only handles instructions we generate at this level. |
| */ |
| static nir_dest * |
| get_instr_dest(nir_instr *instr) |
| { |
| nir_alu_instr *alu_instr; |
| nir_intrinsic_instr *intrinsic_instr; |
| nir_tex_instr *tex_instr; |
| |
| switch (instr->type) { |
| case nir_instr_type_alu: |
| alu_instr = nir_instr_as_alu(instr); |
| return &alu_instr->dest.dest; |
| |
| case nir_instr_type_intrinsic: |
| intrinsic_instr = nir_instr_as_intrinsic(instr); |
| if (nir_intrinsic_infos[intrinsic_instr->intrinsic].has_dest) |
| return &intrinsic_instr->dest; |
| else |
| return NULL; |
| |
| case nir_instr_type_tex: |
| tex_instr = nir_instr_as_tex(instr); |
| return &tex_instr->dest; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| return NULL; |
| } |
| |
| void |
| nir_visitor::add_instr(nir_instr *instr, unsigned num_components) |
| { |
| nir_dest *dest = get_instr_dest(instr); |
| |
| nir_ssa_dest_init(instr, dest, num_components, NULL); |
| |
| nir_instr_insert_after_cf_list(this->cf_node_list, instr); |
| this->result = instr; |
| } |
| |
| nir_src |
| nir_visitor::evaluate_rvalue(ir_rvalue* ir) |
| { |
| ir->accept(this); |
| if (ir->as_dereference() || ir->as_constant()) { |
| /* |
| * A dereference is being used on the right hand side, which means we |
| * must emit a variable load. |
| */ |
| |
| nir_intrinsic_instr *load_instr = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_load_var); |
| load_instr->num_components = ir->type->vector_elements; |
| load_instr->variables[0] = this->deref_head; |
| ralloc_steal(load_instr, load_instr->variables[0]); |
| add_instr(&load_instr->instr, ir->type->vector_elements); |
| } |
| |
| nir_dest *dest = get_instr_dest(this->result); |
| assert(dest->is_ssa); |
| |
| return nir_src_for_ssa(&dest->ssa); |
| } |
| |
| nir_alu_instr * |
| nir_visitor::emit(nir_op op, unsigned dest_size, nir_src *srcs) |
| { |
| nir_alu_instr *instr = nir_alu_instr_create(this->shader, op); |
| for (unsigned i = 0; i < nir_op_infos[op].num_inputs; i++) |
| instr->src[i].src = srcs[i]; |
| instr->dest.write_mask = (1 << dest_size) - 1; |
| add_instr(&instr->instr, dest_size); |
| return instr; |
| } |
| |
| nir_alu_instr * |
| nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1) |
| { |
| assert(nir_op_infos[op].num_inputs == 1); |
| return emit(op, dest_size, &src1); |
| } |
| |
| nir_alu_instr * |
| nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1, |
| nir_src src2) |
| { |
| assert(nir_op_infos[op].num_inputs == 2); |
| nir_src srcs[] = { src1, src2 }; |
| return emit(op, dest_size, srcs); |
| } |
| |
| nir_alu_instr * |
| nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1, |
| nir_src src2, nir_src src3) |
| { |
| assert(nir_op_infos[op].num_inputs == 3); |
| nir_src srcs[] = { src1, src2, src3 }; |
| return emit(op, dest_size, srcs); |
| } |
| |
| void |
| nir_visitor::visit(ir_expression *ir) |
| { |
| /* Some special cases */ |
| switch (ir->operation) { |
| case ir_binop_ubo_load: { |
| ir_constant *const_index = ir->operands[1]->as_constant(); |
| |
| nir_intrinsic_op op; |
| if (const_index) { |
| op = nir_intrinsic_load_ubo; |
| } else { |
| op = nir_intrinsic_load_ubo_indirect; |
| } |
| nir_intrinsic_instr *load = nir_intrinsic_instr_create(this->shader, op); |
| load->num_components = ir->type->vector_elements; |
| load->const_index[0] = const_index ? const_index->value.u[0] : 0; /* base offset */ |
| load->const_index[1] = 1; /* number of vec4's */ |
| load->src[0] = evaluate_rvalue(ir->operands[0]); |
| if (!const_index) |
| load->src[1] = evaluate_rvalue(ir->operands[1]); |
| add_instr(&load->instr, ir->type->vector_elements); |
| |
| /* |
| * In UBO's, a true boolean value is any non-zero value, but we consider |
| * a true boolean to be ~0. Fix this up with a != 0 comparison. |
| */ |
| |
| if (ir->type->base_type == GLSL_TYPE_BOOL) { |
| nir_load_const_instr *const_zero = nir_load_const_instr_create(shader, 1); |
| const_zero->value.u[0] = 0; |
| nir_instr_insert_after_cf_list(this->cf_node_list, &const_zero->instr); |
| |
| nir_alu_instr *compare = nir_alu_instr_create(shader, nir_op_ine); |
| compare->src[0].src.is_ssa = true; |
| compare->src[0].src.ssa = &load->dest.ssa; |
| compare->src[1].src.is_ssa = true; |
| compare->src[1].src.ssa = &const_zero->def; |
| for (unsigned i = 0; i < ir->type->vector_elements; i++) |
| compare->src[1].swizzle[i] = 0; |
| compare->dest.write_mask = (1 << ir->type->vector_elements) - 1; |
| |
| add_instr(&compare->instr, ir->type->vector_elements); |
| } |
| |
| return; |
| } |
| |
| case ir_unop_interpolate_at_centroid: |
| case ir_binop_interpolate_at_offset: |
| case ir_binop_interpolate_at_sample: { |
| ir_dereference *deref = ir->operands[0]->as_dereference(); |
| ir_swizzle *swizzle = NULL; |
| if (!deref) { |
| /* the api does not allow a swizzle here, but the varying packing code |
| * may have pushed one into here. |
| */ |
| swizzle = ir->operands[0]->as_swizzle(); |
| assert(swizzle); |
| deref = swizzle->val->as_dereference(); |
| assert(deref); |
| } |
| |
| deref->accept(this); |
| |
| nir_intrinsic_op op; |
| if (this->deref_head->var->data.mode == nir_var_shader_in) { |
| switch (ir->operation) { |
| case ir_unop_interpolate_at_centroid: |
| op = nir_intrinsic_interp_var_at_centroid; |
| break; |
| case ir_binop_interpolate_at_offset: |
| op = nir_intrinsic_interp_var_at_offset; |
| break; |
| case ir_binop_interpolate_at_sample: |
| op = nir_intrinsic_interp_var_at_sample; |
| break; |
| default: |
| unreachable("Invalid interpolation intrinsic"); |
| } |
| } else { |
| /* This case can happen if the vertex shader does not write the |
| * given varying. In this case, the linker will lower it to a |
| * global variable. Since interpolating a variable makes no |
| * sense, we'll just turn it into a load which will probably |
| * eventually end up as an SSA definition. |
| */ |
| assert(this->deref_head->var->data.mode == nir_var_global); |
| op = nir_intrinsic_load_var; |
| } |
| |
| nir_intrinsic_instr *intrin = nir_intrinsic_instr_create(shader, op); |
| intrin->num_components = deref->type->vector_elements; |
| intrin->variables[0] = this->deref_head; |
| ralloc_steal(intrin, intrin->variables[0]); |
| |
| if (intrin->intrinsic == nir_intrinsic_interp_var_at_offset || |
| intrin->intrinsic == nir_intrinsic_interp_var_at_sample) |
| intrin->src[0] = evaluate_rvalue(ir->operands[1]); |
| |
| add_instr(&intrin->instr, deref->type->vector_elements); |
| |
| if (swizzle) { |
| nir_alu_instr *mov = nir_alu_instr_create(shader, nir_op_imov); |
| mov->dest.write_mask = (1 << swizzle->type->vector_elements) - 1; |
| mov->src[0].src.is_ssa = true; |
| mov->src[0].src.ssa = &intrin->dest.ssa; |
| |
| mov->src[0].swizzle[0] = swizzle->mask.x; |
| mov->src[0].swizzle[1] = swizzle->mask.y; |
| mov->src[0].swizzle[2] = swizzle->mask.z; |
| mov->src[0].swizzle[3] = swizzle->mask.w; |
| for (unsigned i = deref->type->vector_elements; i < 4; i++) |
| mov->src[0].swizzle[i] = 0; |
| |
| add_instr(&mov->instr, swizzle->type->vector_elements); |
| } |
| |
| return; |
| } |
| |
| default: |
| break; |
| } |
| |
| nir_src srcs[4]; |
| for (unsigned i = 0; i < ir->get_num_operands(); i++) |
| srcs[i] = evaluate_rvalue(ir->operands[i]); |
| |
| glsl_base_type types[4]; |
| for (unsigned i = 0; i < ir->get_num_operands(); i++) |
| if (supports_ints) |
| types[i] = ir->operands[i]->type->base_type; |
| else |
| types[i] = GLSL_TYPE_FLOAT; |
| |
| glsl_base_type out_type; |
| if (supports_ints) |
| out_type = ir->type->base_type; |
| else |
| out_type = GLSL_TYPE_FLOAT; |
| |
| unsigned dest_size = ir->type->vector_elements; |
| |
| nir_alu_instr *instr; |
| nir_op op; |
| |
| switch (ir->operation) { |
| case ir_unop_bit_not: emit(nir_op_inot, dest_size, srcs); break; |
| case ir_unop_logic_not: |
| emit(supports_ints ? nir_op_inot : nir_op_fnot, dest_size, srcs); |
| break; |
| case ir_unop_neg: |
| instr = emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fneg : nir_op_ineg, |
| dest_size, srcs); |
| break; |
| case ir_unop_abs: |
| instr = emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fabs : nir_op_iabs, |
| dest_size, srcs); |
| break; |
| case ir_unop_saturate: |
| assert(types[0] == GLSL_TYPE_FLOAT); |
| instr = emit(nir_op_fsat, dest_size, srcs); |
| break; |
| case ir_unop_sign: |
| emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fsign : nir_op_isign, |
| dest_size, srcs); |
| break; |
| case ir_unop_rcp: emit(nir_op_frcp, dest_size, srcs); break; |
| case ir_unop_rsq: emit(nir_op_frsq, dest_size, srcs); break; |
| case ir_unop_sqrt: emit(nir_op_fsqrt, dest_size, srcs); break; |
| case ir_unop_exp: unreachable("ir_unop_exp should have been lowered"); |
| case ir_unop_log: unreachable("ir_unop_log should have been lowered"); |
| case ir_unop_exp2: emit(nir_op_fexp2, dest_size, srcs); break; |
| case ir_unop_log2: emit(nir_op_flog2, dest_size, srcs); break; |
| case ir_unop_i2f: |
| emit(supports_ints ? nir_op_i2f : nir_op_fmov, dest_size, srcs); |
| break; |
| case ir_unop_u2f: |
| emit(supports_ints ? nir_op_u2f : nir_op_fmov, dest_size, srcs); |
| break; |
| case ir_unop_b2f: |
| emit(supports_ints ? nir_op_b2f : nir_op_fmov, dest_size, srcs); |
| break; |
| case ir_unop_f2i: emit(nir_op_f2i, dest_size, srcs); break; |
| case ir_unop_f2u: emit(nir_op_f2u, dest_size, srcs); break; |
| case ir_unop_f2b: emit(nir_op_f2b, dest_size, srcs); break; |
| case ir_unop_i2b: emit(nir_op_i2b, dest_size, srcs); break; |
| case ir_unop_b2i: emit(nir_op_b2i, dest_size, srcs); break; |
| case ir_unop_i2u: |
| case ir_unop_u2i: |
| case ir_unop_bitcast_i2f: |
| case ir_unop_bitcast_f2i: |
| case ir_unop_bitcast_u2f: |
| case ir_unop_bitcast_f2u: |
| case ir_unop_subroutine_to_int: |
| /* no-op */ |
| emit(nir_op_imov, dest_size, srcs); |
| break; |
| case ir_unop_any: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 2: |
| emit(supports_ints ? nir_op_bany2 : nir_op_fany2, |
| dest_size, srcs); |
| break; |
| case 3: |
| emit(supports_ints ? nir_op_bany3 : nir_op_fany3, |
| dest_size, srcs); |
| break; |
| case 4: |
| emit(supports_ints ? nir_op_bany4 : nir_op_fany4, |
| dest_size, srcs); |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| break; |
| case ir_unop_trunc: emit(nir_op_ftrunc, dest_size, srcs); break; |
| case ir_unop_ceil: emit(nir_op_fceil, dest_size, srcs); break; |
| case ir_unop_floor: emit(nir_op_ffloor, dest_size, srcs); break; |
| case ir_unop_fract: emit(nir_op_ffract, dest_size, srcs); break; |
| case ir_unop_round_even: emit(nir_op_fround_even, dest_size, srcs); break; |
| case ir_unop_sin: emit(nir_op_fsin, dest_size, srcs); break; |
| case ir_unop_cos: emit(nir_op_fcos, dest_size, srcs); break; |
| case ir_unop_dFdx: emit(nir_op_fddx, dest_size, srcs); break; |
| case ir_unop_dFdy: emit(nir_op_fddy, dest_size, srcs); break; |
| case ir_unop_dFdx_fine: emit(nir_op_fddx_fine, dest_size, srcs); break; |
| case ir_unop_dFdy_fine: emit(nir_op_fddy_fine, dest_size, srcs); break; |
| case ir_unop_dFdx_coarse: emit(nir_op_fddx_coarse, dest_size, srcs); break; |
| case ir_unop_dFdy_coarse: emit(nir_op_fddy_coarse, dest_size, srcs); break; |
| case ir_unop_pack_snorm_2x16: |
| emit(nir_op_pack_snorm_2x16, dest_size, srcs); |
| break; |
| case ir_unop_pack_snorm_4x8: |
| emit(nir_op_pack_snorm_4x8, dest_size, srcs); |
| break; |
| case ir_unop_pack_unorm_2x16: |
| emit(nir_op_pack_unorm_2x16, dest_size, srcs); |
| break; |
| case ir_unop_pack_unorm_4x8: |
| emit(nir_op_pack_unorm_4x8, dest_size, srcs); |
| break; |
| case ir_unop_pack_half_2x16: |
| emit(nir_op_pack_half_2x16, dest_size, srcs); |
| break; |
| case ir_unop_unpack_snorm_2x16: |
| emit(nir_op_unpack_snorm_2x16, dest_size, srcs); |
| break; |
| case ir_unop_unpack_snorm_4x8: |
| emit(nir_op_unpack_snorm_4x8, dest_size, srcs); |
| break; |
| case ir_unop_unpack_unorm_2x16: |
| emit(nir_op_unpack_unorm_2x16, dest_size, srcs); |
| break; |
| case ir_unop_unpack_unorm_4x8: |
| emit(nir_op_unpack_unorm_4x8, dest_size, srcs); |
| break; |
| case ir_unop_unpack_half_2x16: |
| emit(nir_op_unpack_half_2x16, dest_size, srcs); |
| break; |
| case ir_unop_unpack_half_2x16_split_x: |
| emit(nir_op_unpack_half_2x16_split_x, dest_size, srcs); |
| break; |
| case ir_unop_unpack_half_2x16_split_y: |
| emit(nir_op_unpack_half_2x16_split_y, dest_size, srcs); |
| break; |
| case ir_unop_bitfield_reverse: |
| emit(nir_op_bitfield_reverse, dest_size, srcs); |
| break; |
| case ir_unop_bit_count: |
| emit(nir_op_bit_count, dest_size, srcs); |
| break; |
| case ir_unop_find_msb: |
| switch (types[0]) { |
| case GLSL_TYPE_UINT: |
| emit(nir_op_ufind_msb, dest_size, srcs); |
| break; |
| case GLSL_TYPE_INT: |
| emit(nir_op_ifind_msb, dest_size, srcs); |
| break; |
| default: |
| unreachable("Invalid type for findMSB()"); |
| } |
| break; |
| case ir_unop_find_lsb: |
| emit(nir_op_find_lsb, dest_size, srcs); |
| break; |
| |
| case ir_unop_noise: |
| switch (ir->type->vector_elements) { |
| case 1: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_fnoise1_1, dest_size, srcs); break; |
| case 2: emit(nir_op_fnoise1_2, dest_size, srcs); break; |
| case 3: emit(nir_op_fnoise1_3, dest_size, srcs); break; |
| case 4: emit(nir_op_fnoise1_4, dest_size, srcs); break; |
| default: unreachable("not reached"); |
| } |
| break; |
| case 2: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_fnoise2_1, dest_size, srcs); break; |
| case 2: emit(nir_op_fnoise2_2, dest_size, srcs); break; |
| case 3: emit(nir_op_fnoise2_3, dest_size, srcs); break; |
| case 4: emit(nir_op_fnoise2_4, dest_size, srcs); break; |
| default: unreachable("not reached"); |
| } |
| break; |
| case 3: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_fnoise3_1, dest_size, srcs); break; |
| case 2: emit(nir_op_fnoise3_2, dest_size, srcs); break; |
| case 3: emit(nir_op_fnoise3_3, dest_size, srcs); break; |
| case 4: emit(nir_op_fnoise3_4, dest_size, srcs); break; |
| default: unreachable("not reached"); |
| } |
| break; |
| case 4: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_fnoise4_1, dest_size, srcs); break; |
| case 2: emit(nir_op_fnoise4_2, dest_size, srcs); break; |
| case 3: emit(nir_op_fnoise4_3, dest_size, srcs); break; |
| case 4: emit(nir_op_fnoise4_4, dest_size, srcs); break; |
| default: unreachable("not reached"); |
| } |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| break; |
| case ir_binop_add: |
| case ir_binop_sub: |
| case ir_binop_mul: |
| case ir_binop_div: |
| case ir_binop_mod: |
| case ir_binop_min: |
| case ir_binop_max: |
| case ir_binop_pow: |
| case ir_binop_bit_and: |
| case ir_binop_bit_or: |
| case ir_binop_bit_xor: |
| case ir_binop_logic_and: |
| case ir_binop_logic_or: |
| case ir_binop_logic_xor: |
| case ir_binop_lshift: |
| case ir_binop_rshift: |
| switch (ir->operation) { |
| case ir_binop_add: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fadd; |
| else |
| op = nir_op_iadd; |
| break; |
| case ir_binop_sub: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fsub; |
| else |
| op = nir_op_isub; |
| break; |
| case ir_binop_mul: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fmul; |
| else |
| op = nir_op_imul; |
| break; |
| case ir_binop_div: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fdiv; |
| else if (out_type == GLSL_TYPE_INT) |
| op = nir_op_idiv; |
| else |
| op = nir_op_udiv; |
| break; |
| case ir_binop_mod: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fmod; |
| else |
| op = nir_op_umod; |
| break; |
| case ir_binop_min: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fmin; |
| else if (out_type == GLSL_TYPE_INT) |
| op = nir_op_imin; |
| else |
| op = nir_op_umin; |
| break; |
| case ir_binop_max: |
| if (out_type == GLSL_TYPE_FLOAT) |
| op = nir_op_fmax; |
| else if (out_type == GLSL_TYPE_INT) |
| op = nir_op_imax; |
| else |
| op = nir_op_umax; |
| break; |
| case ir_binop_bit_and: |
| op = nir_op_iand; |
| break; |
| case ir_binop_bit_or: |
| op = nir_op_ior; |
| break; |
| case ir_binop_bit_xor: |
| op = nir_op_ixor; |
| break; |
| case ir_binop_logic_and: |
| if (supports_ints) |
| op = nir_op_iand; |
| else |
| op = nir_op_fand; |
| break; |
| case ir_binop_logic_or: |
| if (supports_ints) |
| op = nir_op_ior; |
| else |
| op = nir_op_for; |
| break; |
| case ir_binop_logic_xor: |
| if (supports_ints) |
| op = nir_op_ixor; |
| else |
| op = nir_op_fxor; |
| break; |
| case ir_binop_lshift: |
| op = nir_op_ishl; |
| break; |
| case ir_binop_rshift: |
| if (out_type == GLSL_TYPE_INT) |
| op = nir_op_ishr; |
| else |
| op = nir_op_ushr; |
| break; |
| case ir_binop_pow: |
| op = nir_op_fpow; |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| instr = emit(op, dest_size, srcs); |
| |
| if (ir->operands[0]->type->vector_elements != 1 && |
| ir->operands[1]->type->vector_elements == 1) { |
| for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; |
| i++) { |
| instr->src[1].swizzle[i] = 0; |
| } |
| } |
| |
| if (ir->operands[1]->type->vector_elements != 1 && |
| ir->operands[0]->type->vector_elements == 1) { |
| for (unsigned i = 0; i < ir->operands[1]->type->vector_elements; |
| i++) { |
| instr->src[0].swizzle[i] = 0; |
| } |
| } |
| |
| break; |
| case ir_binop_imul_high: |
| emit(out_type == GLSL_TYPE_UINT ? nir_op_umul_high : nir_op_imul_high, |
| dest_size, srcs); |
| break; |
| case ir_binop_carry: emit(nir_op_uadd_carry, dest_size, srcs); break; |
| case ir_binop_borrow: emit(nir_op_usub_borrow, dest_size, srcs); break; |
| case ir_binop_less: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_flt, dest_size, srcs); |
| else if (types[0] == GLSL_TYPE_INT) |
| emit(nir_op_ilt, dest_size, srcs); |
| else |
| emit(nir_op_ult, dest_size, srcs); |
| } else { |
| emit(nir_op_slt, dest_size, srcs); |
| } |
| break; |
| case ir_binop_greater: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_flt, dest_size, srcs[1], srcs[0]); |
| else if (types[0] == GLSL_TYPE_INT) |
| emit(nir_op_ilt, dest_size, srcs[1], srcs[0]); |
| else |
| emit(nir_op_ult, dest_size, srcs[1], srcs[0]); |
| } else { |
| emit(nir_op_slt, dest_size, srcs[1], srcs[0]); |
| } |
| break; |
| case ir_binop_lequal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_fge, dest_size, srcs[1], srcs[0]); |
| else if (types[0] == GLSL_TYPE_INT) |
| emit(nir_op_ige, dest_size, srcs[1], srcs[0]); |
| else |
| emit(nir_op_uge, dest_size, srcs[1], srcs[0]); |
| } else { |
| emit(nir_op_slt, dest_size, srcs[1], srcs[0]); |
| } |
| break; |
| case ir_binop_gequal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_fge, dest_size, srcs); |
| else if (types[0] == GLSL_TYPE_INT) |
| emit(nir_op_ige, dest_size, srcs); |
| else |
| emit(nir_op_uge, dest_size, srcs); |
| } else { |
| emit(nir_op_slt, dest_size, srcs); |
| } |
| break; |
| case ir_binop_equal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_feq, dest_size, srcs); |
| else |
| emit(nir_op_ieq, dest_size, srcs); |
| } else { |
| emit(nir_op_seq, dest_size, srcs); |
| } |
| break; |
| case ir_binop_nequal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) |
| emit(nir_op_fne, dest_size, srcs); |
| else |
| emit(nir_op_ine, dest_size, srcs); |
| } else { |
| emit(nir_op_sne, dest_size, srcs); |
| } |
| break; |
| case ir_binop_all_equal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_feq, dest_size, srcs); break; |
| case 2: emit(nir_op_ball_fequal2, dest_size, srcs); break; |
| case 3: emit(nir_op_ball_fequal3, dest_size, srcs); break; |
| case 4: emit(nir_op_ball_fequal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } else { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_ieq, dest_size, srcs); break; |
| case 2: emit(nir_op_ball_iequal2, dest_size, srcs); break; |
| case 3: emit(nir_op_ball_iequal3, dest_size, srcs); break; |
| case 4: emit(nir_op_ball_iequal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } |
| } else { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_seq, dest_size, srcs); break; |
| case 2: emit(nir_op_fall_equal2, dest_size, srcs); break; |
| case 3: emit(nir_op_fall_equal3, dest_size, srcs); break; |
| case 4: emit(nir_op_fall_equal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } |
| break; |
| case ir_binop_any_nequal: |
| if (supports_ints) { |
| if (types[0] == GLSL_TYPE_FLOAT) { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_fne, dest_size, srcs); break; |
| case 2: emit(nir_op_bany_fnequal2, dest_size, srcs); break; |
| case 3: emit(nir_op_bany_fnequal3, dest_size, srcs); break; |
| case 4: emit(nir_op_bany_fnequal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } else { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_ine, dest_size, srcs); break; |
| case 2: emit(nir_op_bany_inequal2, dest_size, srcs); break; |
| case 3: emit(nir_op_bany_inequal3, dest_size, srcs); break; |
| case 4: emit(nir_op_bany_inequal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } |
| } else { |
| switch (ir->operands[0]->type->vector_elements) { |
| case 1: emit(nir_op_sne, dest_size, srcs); break; |
| case 2: emit(nir_op_fany_nequal2, dest_size, srcs); break; |
| case 3: emit(nir_op_fany_nequal3, dest_size, srcs); break; |
| case 4: emit(nir_op_fany_nequal4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| } |
| break; |
| case ir_binop_dot: |
| switch (ir->operands[0]->type->vector_elements) { |
| case 2: emit(nir_op_fdot2, dest_size, srcs); break; |
| case 3: emit(nir_op_fdot3, dest_size, srcs); break; |
| case 4: emit(nir_op_fdot4, dest_size, srcs); break; |
| default: |
| unreachable("not reached"); |
| } |
| break; |
| |
| case ir_binop_pack_half_2x16_split: |
| emit(nir_op_pack_half_2x16_split, dest_size, srcs); |
| break; |
| case ir_binop_bfm: emit(nir_op_bfm, dest_size, srcs); break; |
| case ir_binop_ldexp: emit(nir_op_ldexp, dest_size, srcs); break; |
| case ir_triop_fma: emit(nir_op_ffma, dest_size, srcs); break; |
| case ir_triop_lrp: |
| instr = emit(nir_op_flrp, dest_size, srcs); |
| if (ir->operands[0]->type->vector_elements != 1 && |
| ir->operands[2]->type->vector_elements == 1) { |
| for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; |
| i++) { |
| instr->src[2].swizzle[i] = 0; |
| } |
| } |
| break; |
| case ir_triop_csel: |
| if (supports_ints) |
| emit(nir_op_bcsel, dest_size, srcs); |
| else |
| emit(nir_op_fcsel, dest_size, srcs); |
| break; |
| case ir_triop_bfi: |
| instr = emit(nir_op_bfi, dest_size, srcs); |
| for (unsigned i = 0; i < ir->operands[1]->type->vector_elements; i++) { |
| instr->src[0].swizzle[i] = 0; |
| } |
| break; |
| case ir_triop_bitfield_extract: |
| instr = emit(out_type == GLSL_TYPE_INT ? nir_op_ibitfield_extract : |
| nir_op_ubitfield_extract, dest_size, srcs); |
| for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; i++) { |
| instr->src[1].swizzle[i] = 0; |
| instr->src[2].swizzle[i] = 0; |
| } |
| break; |
| case ir_quadop_bitfield_insert: |
| instr = emit(nir_op_bitfield_insert, dest_size, srcs); |
| for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; i++) { |
| instr->src[2].swizzle[i] = 0; |
| instr->src[3].swizzle[i] = 0; |
| } |
| break; |
| case ir_quadop_vector: |
| switch (ir->type->vector_elements) { |
| case 2: emit(nir_op_vec2, dest_size, srcs); break; |
| case 3: emit(nir_op_vec3, dest_size, srcs); break; |
| case 4: emit(nir_op_vec4, dest_size, srcs); break; |
| default: unreachable("not reached"); |
| } |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| } |
| |
| void |
| nir_visitor::visit(ir_swizzle *ir) |
| { |
| nir_alu_instr *instr = emit(supports_ints ? nir_op_imov : nir_op_fmov, |
| ir->type->vector_elements, |
| evaluate_rvalue(ir->val)); |
| |
| unsigned swizzle[4] = { ir->mask.x, ir->mask.y, ir->mask.z, ir->mask.w }; |
| for (unsigned i = 0; i < ir->type->vector_elements; i++) |
| instr->src[0].swizzle[i] = swizzle[i]; |
| } |
| |
| void |
| nir_visitor::visit(ir_texture *ir) |
| { |
| unsigned num_srcs; |
| nir_texop op; |
| switch (ir->op) { |
| case ir_tex: |
| op = nir_texop_tex; |
| num_srcs = 1; /* coordinate */ |
| break; |
| |
| case ir_txb: |
| case ir_txl: |
| op = (ir->op == ir_txb) ? nir_texop_txb : nir_texop_txl; |
| num_srcs = 2; /* coordinate, bias/lod */ |
| break; |
| |
| case ir_txd: |
| op = nir_texop_txd; /* coordinate, dPdx, dPdy */ |
| num_srcs = 3; |
| break; |
| |
| case ir_txf: |
| op = nir_texop_txf; |
| if (ir->lod_info.lod != NULL) |
| num_srcs = 2; /* coordinate, lod */ |
| else |
| num_srcs = 1; /* coordinate */ |
| break; |
| |
| case ir_txf_ms: |
| op = nir_texop_txf_ms; |
| num_srcs = 2; /* coordinate, sample_index */ |
| break; |
| |
| case ir_txs: |
| op = nir_texop_txs; |
| if (ir->lod_info.lod != NULL) |
| num_srcs = 1; /* lod */ |
| else |
| num_srcs = 0; |
| break; |
| |
| case ir_lod: |
| op = nir_texop_lod; |
| num_srcs = 1; /* coordinate */ |
| break; |
| |
| case ir_tg4: |
| op = nir_texop_tg4; |
| num_srcs = 1; /* coordinate */ |
| break; |
| |
| case ir_query_levels: |
| op = nir_texop_query_levels; |
| num_srcs = 0; |
| break; |
| |
| default: |
| unreachable("not reached"); |
| } |
| |
| if (ir->projector != NULL) |
| num_srcs++; |
| if (ir->shadow_comparitor != NULL) |
| num_srcs++; |
| if (ir->offset != NULL && ir->offset->as_constant() == NULL) |
| num_srcs++; |
| |
| nir_tex_instr *instr = nir_tex_instr_create(this->shader, num_srcs); |
| |
| instr->op = op; |
| instr->sampler_dim = |
| (glsl_sampler_dim) ir->sampler->type->sampler_dimensionality; |
| instr->is_array = ir->sampler->type->sampler_array; |
| instr->is_shadow = ir->sampler->type->sampler_shadow; |
| if (instr->is_shadow) |
| instr->is_new_style_shadow = (ir->type->vector_elements == 1); |
| switch (ir->type->base_type) { |
| case GLSL_TYPE_FLOAT: |
| instr->dest_type = nir_type_float; |
| break; |
| case GLSL_TYPE_INT: |
| instr->dest_type = nir_type_int; |
| break; |
| case GLSL_TYPE_UINT: |
| instr->dest_type = nir_type_unsigned; |
| break; |
| default: |
| unreachable("not reached"); |
| } |
| |
| instr->sampler = evaluate_deref(&instr->instr, ir->sampler); |
| |
| unsigned src_number = 0; |
| |
| if (ir->coordinate != NULL) { |
| instr->coord_components = ir->coordinate->type->vector_elements; |
| instr->src[src_number].src = evaluate_rvalue(ir->coordinate); |
| instr->src[src_number].src_type = nir_tex_src_coord; |
| src_number++; |
| } |
| |
| if (ir->projector != NULL) { |
| instr->src[src_number].src = evaluate_rvalue(ir->projector); |
| instr->src[src_number].src_type = nir_tex_src_projector; |
| src_number++; |
| } |
| |
| if (ir->shadow_comparitor != NULL) { |
| instr->src[src_number].src = evaluate_rvalue(ir->shadow_comparitor); |
| instr->src[src_number].src_type = nir_tex_src_comparitor; |
| src_number++; |
| } |
| |
| if (ir->offset != NULL) { |
| /* we don't support multiple offsets yet */ |
| assert(ir->offset->type->is_vector() || ir->offset->type->is_scalar()); |
| |
| ir_constant *const_offset = ir->offset->as_constant(); |
| if (const_offset != NULL) { |
| for (unsigned i = 0; i < const_offset->type->vector_elements; i++) |
| instr->const_offset[i] = const_offset->value.i[i]; |
| } else { |
| instr->src[src_number].src = evaluate_rvalue(ir->offset); |
| instr->src[src_number].src_type = nir_tex_src_offset; |
| src_number++; |
| } |
| } |
| |
| switch (ir->op) { |
| case ir_txb: |
| instr->src[src_number].src = evaluate_rvalue(ir->lod_info.bias); |
| instr->src[src_number].src_type = nir_tex_src_bias; |
| src_number++; |
| break; |
| |
| case ir_txl: |
| case ir_txf: |
| case ir_txs: |
| if (ir->lod_info.lod != NULL) { |
| instr->src[src_number].src = evaluate_rvalue(ir->lod_info.lod); |
| instr->src[src_number].src_type = nir_tex_src_lod; |
| src_number++; |
| } |
| break; |
| |
| case ir_txd: |
| instr->src[src_number].src = evaluate_rvalue(ir->lod_info.grad.dPdx); |
| instr->src[src_number].src_type = nir_tex_src_ddx; |
| src_number++; |
| instr->src[src_number].src = evaluate_rvalue(ir->lod_info.grad.dPdy); |
| instr->src[src_number].src_type = nir_tex_src_ddy; |
| src_number++; |
| break; |
| |
| case ir_txf_ms: |
| instr->src[src_number].src = evaluate_rvalue(ir->lod_info.sample_index); |
| instr->src[src_number].src_type = nir_tex_src_ms_index; |
| src_number++; |
| break; |
| |
| case ir_tg4: |
| instr->component = ir->lod_info.component->as_constant()->value.u[0]; |
| break; |
| |
| default: |
| break; |
| } |
| |
| assert(src_number == num_srcs); |
| |
| add_instr(&instr->instr, nir_tex_instr_dest_size(instr)); |
| } |
| |
| void |
| nir_visitor::visit(ir_constant *ir) |
| { |
| /* |
| * We don't know if this variable is an an array or struct that gets |
| * dereferenced, so do the safe thing an make it a variable with a |
| * constant initializer and return a dereference. |
| */ |
| |
| nir_variable *var = ralloc(this->shader, nir_variable); |
| var->name = ralloc_strdup(var, "const_temp"); |
| var->type = ir->type; |
| var->data.mode = nir_var_local; |
| var->data.read_only = true; |
| var->constant_initializer = constant_copy(ir, var); |
| exec_list_push_tail(&this->impl->locals, &var->node); |
| |
| this->deref_head = nir_deref_var_create(this->shader, var); |
| this->deref_tail = &this->deref_head->deref; |
| } |
| |
| void |
| nir_visitor::visit(ir_dereference_variable *ir) |
| { |
| struct hash_entry *entry = |
| _mesa_hash_table_search(this->var_table, ir->var); |
| assert(entry); |
| nir_variable *var = (nir_variable *) entry->data; |
| |
| nir_deref_var *deref = nir_deref_var_create(this->shader, var); |
| this->deref_head = deref; |
| this->deref_tail = &deref->deref; |
| } |
| |
| void |
| nir_visitor::visit(ir_dereference_record *ir) |
| { |
| ir->record->accept(this); |
| |
| int field_index = this->deref_tail->type->field_index(ir->field); |
| assert(field_index >= 0); |
| |
| nir_deref_struct *deref = nir_deref_struct_create(this->deref_tail, field_index); |
| deref->deref.type = ir->type; |
| this->deref_tail->child = &deref->deref; |
| this->deref_tail = &deref->deref; |
| } |
| |
| void |
| nir_visitor::visit(ir_dereference_array *ir) |
| { |
| nir_deref_array *deref = nir_deref_array_create(this->shader); |
| deref->deref.type = ir->type; |
| |
| ir_constant *const_index = ir->array_index->as_constant(); |
| if (const_index != NULL) { |
| deref->deref_array_type = nir_deref_array_type_direct; |
| deref->base_offset = const_index->value.u[0]; |
| } else { |
| deref->deref_array_type = nir_deref_array_type_indirect; |
| deref->indirect = evaluate_rvalue(ir->array_index); |
| } |
| |
| ir->array->accept(this); |
| |
| this->deref_tail->child = &deref->deref; |
| ralloc_steal(this->deref_tail, deref); |
| this->deref_tail = &deref->deref; |
| } |
| |
| void |
| nir_visitor::visit(ir_barrier *ir) |
| { |
| nir_intrinsic_instr *instr = |
| nir_intrinsic_instr_create(this->shader, nir_intrinsic_barrier); |
| nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); |
| } |