From c22c40015db32b68b33c4944b9d94bf499135ec5 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Fri, 26 Mar 2010 18:20:30 -0700 Subject: [PATCH] Implement the first builtin function: exp(). --- Makefile.am | 2 +- ast_to_hir.cpp | 1 + builtin_function.cpp | 169 +++++++++++++++++++++++++++++++++++++++++++++++++++ ir.h | 4 ++ 4 files changed, 175 insertions(+), 1 deletion(-) create mode 100644 builtin_function.cpp diff --git a/Makefile.am b/Makefile.am index 48b4b39..9f5efa9 100644 --- a/Makefile.am +++ b/Makefile.am @@ -26,7 +26,7 @@ bin_PROGRAMS = glsl glsl_SOURCES = symbol_table.c hash_table.c glsl_types.cpp \ glsl_parser.ypp glsl_lexer.lpp glsl_parser_extras.cpp \ ast_expr.cpp ast_to_hir.cpp ast_function.cpp ast_type.cpp \ - ir.cpp hir_field_selection.cpp \ + ir.cpp hir_field_selection.cpp builtin_function.cpp \ ir_print_visitor.cpp ir_variable.cpp ir_function.cpp BUILT_SOURCES = glsl_parser.h builtin_types.h glsl_parser.cpp glsl_lexer.cpp diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp index d6aa3bc..ec1562f 100644 --- a/ast_to_hir.cpp +++ b/ast_to_hir.cpp @@ -63,6 +63,7 @@ _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) _mesa_glsl_initialize_variables(instructions, state); _mesa_glsl_initialize_constructors(instructions, state); + _mesa_glsl_initialize_functions(instructions, state); state->current_function = NULL; diff --git a/builtin_function.cpp b/builtin_function.cpp new file mode 100644 index 0000000..fb168ac --- /dev/null +++ b/builtin_function.cpp @@ -0,0 +1,169 @@ +/* + * 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. + */ + +#include +#include "glsl_symbol_table.h" +#include "glsl_parser_extras.h" +#include "glsl_types.h" +#include "ir.h" + +static void +generate_exp(exec_list *instructions, + ir_variable **declarations, + const glsl_type *type) +{ + ir_dereference *const retval = new ir_dereference(declarations[16]); + ir_dereference *const arg = new ir_dereference(declarations[0]); + ir_rvalue *result; + + result = new ir_expression(ir_unop_exp, type, arg, NULL); + + ir_instruction *inst = new ir_assignment(retval, result, NULL); + instructions->push_tail(inst); +} + +void +generate_function_instance(ir_function *f, + const char *name, + exec_list *instructions, + void (*generate)(exec_list *instructions, + ir_variable **declarations, + const glsl_type *type), + const glsl_type *type) +{ + ir_variable *declarations[17]; + + ir_function_signature *const sig = new ir_function_signature(type); + f->signatures.push_tail(sig); + + ir_label *const label = new ir_label(name); + instructions->push_tail(label); + sig->definition = label; + + ir_variable *var = new ir_variable(type, "arg"); + + var->mode = ir_var_in; + sig->parameters.push_tail(var); + + var = new ir_variable(type, "arg"); + + declarations[0] = var; + + ir_variable *retval = new ir_variable(type, "__retval"); + instructions->push_tail(retval); + + declarations[16] = retval; + + generate(instructions, declarations, type); +} + +void +make_gentype_function(glsl_symbol_table *symtab, exec_list *instructions, + const char *name, + void (*generate)(exec_list *instructions, + ir_variable **declarations, + const glsl_type *type)) +{ + ir_function *const f = new ir_function(name); + const glsl_type *vec2_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 2, 1); + const glsl_type *vec3_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 3, 1); + const glsl_type *vec4_type = glsl_type::get_instance(GLSL_TYPE_FLOAT, 4, 1); + + bool added = symtab->add_function(name, f); + assert(added); + + generate_function_instance(f, name, instructions, generate, glsl_type::float_type); + generate_function_instance(f, name, instructions, generate, vec2_type); + generate_function_instance(f, name, instructions, generate, vec3_type); + generate_function_instance(f, name, instructions, generate, vec4_type); +} + +void +generate_110_functions(glsl_symbol_table *symtab, exec_list *instructions) +{ + /* FINISHME: radians() */ + /* FINISHME: degrees() */ + /* FINISHME: sin() */ + /* FINISHME: cos() */ + /* FINISHME: tan() */ + /* FINISHME: asin() */ + /* FINISHME: acos() */ + /* FINISHME: atan(y,x) */ + /* FINISHME: atan(y/x) */ + /* FINISHME: pow() */ + make_gentype_function(symtab, instructions, "exp", generate_exp); + /* FINISHME: log() */ + /* FINISHME: exp2() */ + /* FINISHME: log2() */ + /* FINISHME: sqrt() */ + /* FINISHME: inversesqrt() */ + /* FINISHME: abs() */ + /* FINISHME: sign() */ + /* FINISHME: floor() */ + /* FINISHME: ceil() */ + /* FINISHME: fract() */ + /* FINISHME: mod(x, float y) */ + /* FINISHME: mod(x, y) */ + /* FINISHME: min() */ + /* FINISHME: max() */ + /* FINISHME: clamp() */ + /* FINISHME: clamp() */ + /* FINISHME: mix() */ + /* FINISHME: mix() */ + /* FINISHME: step() */ + /* FINISHME: step() */ + /* FINISHME: smoothstep() */ + /* FINISHME: smoothstep() */ + /* FINISHME: floor() */ + /* FINISHME: step() */ + /* FINISHME: length() */ + /* FINISHME: distance() */ + /* FINISHME: dot() */ + /* FINISHME: cross() */ + /* FINISHME: normalize() */ + /* FINISHME: ftransform() */ + /* FINISHME: faceforward() */ + /* FINISHME: reflect() */ + /* FINISHME: refract() */ + /* FINISHME: matrixCompMult() */ + /* FINISHME: lessThan() */ + /* FINISHME: lessThanEqual() */ + /* FINISHME: greaterThan() */ + /* FINISHME: greaterThanEqual() */ + /* FINISHME: equal() */ + /* FINISHME: notEqual() */ + /* FINISHME: any() */ + /* FINISHME: all() */ + /* FINISHME: not() */ + /* FINISHME: texture*() */ + /* FINISHME: shadow*() */ + /* FINISHME: dFd[xy]() */ + /* FINISHME: fwidth() */ +} + +void +_mesa_glsl_initialize_functions(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + generate_110_functions(state->symbols, instructions); +} diff --git a/ir.h b/ir.h index 7e2f304..bad5111 100644 --- a/ir.h +++ b/ir.h @@ -521,4 +521,8 @@ extern void _mesa_glsl_initialize_variables(exec_list *instructions, struct _mesa_glsl_parse_state *state); +extern void +_mesa_glsl_initialize_functions(exec_list *instructions, + struct _mesa_glsl_parse_state *state); + #endif /* IR_H */ -- 2.7.4