diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/glsl/Makefile | 1 | ||||
| -rw-r--r-- | src/glsl/ir.h | 9 | ||||
| -rw-r--r-- | src/glsl/ir_hierarchical_visitor.cpp | 7 | ||||
| -rw-r--r-- | src/glsl/ir_hierarchical_visitor.h | 12 | ||||
| -rw-r--r-- | src/glsl/ir_hv_accept.cpp | 5 | ||||
| -rw-r--r-- | src/glsl/ir_mod_to_fract.cpp | 89 | ||||
| -rw-r--r-- | src/glsl/ir_optimization.h | 1 | ||||
| -rw-r--r-- | src/mesa/shader/ir_to_mesa.cpp | 3 |
8 files changed, 120 insertions, 7 deletions
diff --git a/src/glsl/Makefile b/src/glsl/Makefile index f4e32b91857..a709bf7121e 100644 --- a/src/glsl/Makefile +++ b/src/glsl/Makefile @@ -40,6 +40,7 @@ CXX_SOURCES = \ ir_hierarchical_visitor.cpp \ ir_hv_accept.cpp \ ir_if_simplification.cpp \ + ir_mod_to_fract.cpp \ ir_print_visitor.cpp \ ir_reader.cpp \ ir_swizzle_swizzle.cpp \ diff --git a/src/glsl/ir.h b/src/glsl/ir.h index f47813786b5..c19bd417c33 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -551,6 +551,15 @@ enum ir_expression_operation { ir_binop_sub, ir_binop_mul, ir_binop_div, + + /** + * Takes one of two combinations of arguments: + * + * - mod(vecN, vecN) + * - mod(vecN, float) + * + * Does not take integer types. + */ ir_binop_mod, /** diff --git a/src/glsl/ir_hierarchical_visitor.cpp b/src/glsl/ir_hierarchical_visitor.cpp index 9afb12a4a2b..d475df62fce 100644 --- a/src/glsl/ir_hierarchical_visitor.cpp +++ b/src/glsl/ir_hierarchical_visitor.cpp @@ -277,12 +277,7 @@ ir_hierarchical_visitor::visit_leave(ir_if *ir) void ir_hierarchical_visitor::run(exec_list *instructions) { - foreach_list(n, instructions) { - ir_instruction *ir = (ir_instruction *) n; - - if (ir->accept(this) != visit_continue) - break; - } + visit_list_elements(this, instructions); } diff --git a/src/glsl/ir_hierarchical_visitor.h b/src/glsl/ir_hierarchical_visitor.h index 2c4590d4b10..afa780dc912 100644 --- a/src/glsl/ir_hierarchical_visitor.h +++ b/src/glsl/ir_hierarchical_visitor.h @@ -141,6 +141,16 @@ public: */ void run(struct exec_list *instructions); + /* Some visitors may need to insert new variable declarations and + * assignments for portions of a subtree, which means they need a + * pointer to the current instruction in the stream, not just their + * node in the tree rooted at that instruction. + * + * This is implemented by visit_list_elements -- if the visitor is + * not called by it, nothing good will happen. + */ + class ir_instruction *base_ir; + /** * Callback function that is invoked on entry to each node visited. * @@ -161,4 +171,6 @@ void visit_tree(ir_instruction *ir, void (*callback)(class ir_instruction *ir, void *data), void *data); +ir_visitor_status visit_list_elements(ir_hierarchical_visitor *v, exec_list *l); + #endif /* IR_HIERARCHICAL_VISITOR_H */ diff --git a/src/glsl/ir_hv_accept.cpp b/src/glsl/ir_hv_accept.cpp index 7b5cc5234c5..e772018a458 100644 --- a/src/glsl/ir_hv_accept.cpp +++ b/src/glsl/ir_hv_accept.cpp @@ -37,20 +37,23 @@ * from list. However, if nodes are added to the list after the node being * processed, some of the added noded may not be processed. */ -static ir_visitor_status +ir_visitor_status visit_list_elements(ir_hierarchical_visitor *v, exec_list *l) { exec_node *next; + ir_instruction *prev_base_ir = v->base_ir; for (exec_node *n = l->head; n->next != NULL; n = next) { next = n->next; ir_instruction *const ir = (ir_instruction *) n; + v->base_ir = ir; ir_visitor_status s = ir->accept(v); if (s != visit_continue) return s; } + v->base_ir = prev_base_ir; return visit_continue; } diff --git a/src/glsl/ir_mod_to_fract.cpp b/src/glsl/ir_mod_to_fract.cpp new file mode 100644 index 00000000000..ec1e65092d9 --- /dev/null +++ b/src/glsl/ir_mod_to_fract.cpp @@ -0,0 +1,89 @@ +/* + * Copyright © 2010 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. + */ + +/** + * \file ir_mod_to_floor.cpp + * + * Breaks an ir_unop_mod expression down to (op1 * fract(op0 / op1)) + * + * Many GPUs don't have a MOD instruction (945 and 965 included), and + * if we have to break it down like this anyway, it gives an + * opportunity to do things like constant fold the (1.0 / op1) easily. + */ + +#include "ir.h" + +class ir_mod_to_fract_visitor : public ir_hierarchical_visitor { +public: + ir_mod_to_fract_visitor() + { + this->made_progress = false; + } + + ir_visitor_status visit_leave(ir_expression *); + + bool made_progress; +}; + +bool +do_mod_to_fract(exec_list *instructions) +{ + ir_mod_to_fract_visitor v; + + visit_list_elements(&v, instructions); + return v.made_progress; +} + +ir_visitor_status +ir_mod_to_fract_visitor::visit_leave(ir_expression *ir) +{ + if (ir->operation != ir_binop_mod) + return visit_continue; + + ir_variable *temp = new(ir) ir_variable(ir->operands[1]->type, "mod_b"); + this->base_ir->insert_before(temp); + + ir_assignment *assign; + ir_rvalue *expr; + + assign = new(ir) ir_assignment(new(ir) ir_dereference_variable(temp), + ir->operands[1], NULL); + this->base_ir->insert_before(assign); + + expr = new(ir) ir_expression(ir_binop_div, + ir->operands[0]->type, + ir->operands[0], + new(ir) ir_dereference_variable(temp)); + + expr = new(ir) ir_expression(ir_unop_fract, + ir->operands[0]->type, + expr, + NULL); + + ir->operation = ir_binop_mul; + ir->operands[0] = new(ir) ir_dereference_variable(temp); + ir->operands[1] = expr; + this->made_progress = true; + + return visit_continue; +} diff --git a/src/glsl/ir_optimization.h b/src/glsl/ir_optimization.h index 147f92176bf..1a8b740566b 100644 --- a/src/glsl/ir_optimization.h +++ b/src/glsl/ir_optimization.h @@ -39,5 +39,6 @@ bool do_dead_code_unlinked(struct _mesa_glsl_parse_state *state, exec_list *instructions); bool do_function_inlining(exec_list *instructions); bool do_if_simplification(exec_list *instructions); +bool do_mod_to_fract(exec_list *instructions); bool do_swizzle_swizzle(exec_list *instructions); bool do_vec_index_to_swizzle(exec_list *instructions); diff --git a/src/mesa/shader/ir_to_mesa.cpp b/src/mesa/shader/ir_to_mesa.cpp index 2f2096ef97b..25267d79b53 100644 --- a/src/mesa/shader/ir_to_mesa.cpp +++ b/src/mesa/shader/ir_to_mesa.cpp @@ -1724,6 +1724,9 @@ _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader) if (!state->error && !state->translation_unit.is_empty()) _mesa_ast_to_hir(shader->ir, state); + /* Lowering */ + do_mod_to_fract(shader->ir); + /* Optimization passes */ if (!state->error && !shader->ir->is_empty()) { bool progress; |