diff options
| -rw-r--r-- | src/glsl/ir_constant_expression.cpp | 151 |
1 files changed, 148 insertions, 3 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 9309b61898..aa53d8d186 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -764,7 +764,152 @@ ir_constant::constant_expression_value() ir_constant * ir_call::constant_expression_value() { - /* FINISHME: Handle CEs involving builtin function calls. */ - return NULL; -} + if (this->type == glsl_type::error_type) + return NULL; + + /* From the GLSL 1.20 spec, page 23: + * "Function calls to user-defined functions (non-built-in functions) + * cannot be used to form constant expressions." + */ + if (!this->callee->is_built_in) + return NULL; + + unsigned num_parameters = 0; + + /* Check if all parameters are constant */ + ir_constant *op[3]; + foreach_list(n, &this->actual_parameters) { + ir_constant *constant = ((ir_rvalue *) n)->constant_expression_value(); + if (constant == NULL) + return NULL; + + op[num_parameters] = constant; + + assert(num_parameters < 3); + num_parameters++; + } + /* Individual cases below can either: + * - Assign "expr" a new ir_expression to evaluate (for basic opcodes) + * - Fill "data" with appopriate constant data + * - Return an ir_constant directly. + */ + void *mem_ctx = talloc_parent(this); + ir_expression *expr = NULL; + + ir_constant_data data; + memset(&data, 0, sizeof(data)); + + const char *callee = this->callee_name(); + if (strcmp(callee, "abs") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "all") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "any") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "asin") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "atan") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "dFdx") == 0 || strcmp(callee, "dFdy") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "ceil") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "clamp") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "cos") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "cosh") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "cross") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "degrees") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "distance") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "dot") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "equal") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "exp") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "exp2") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "faceforward") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "floor") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "fract") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "fwidth") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "greaterThan") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "greaterThanEqual") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "inversesqrt") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "length") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "lessThan") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "lessThanEqual") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "log") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "log2") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "matrixCompMult") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "max") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "min") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "mix") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "mod") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "normalize") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "not") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "notEqual") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "outerProduct") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "pow") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "radians") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "reflect") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "refract") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "sign") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "sin") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "sinh") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "smoothstep") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "sqrt") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "step") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "tan") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "tanh") == 0) { + return NULL; /* FINISHME: implement this */ + } else if (strcmp(callee, "transpose") == 0) { + return NULL; /* FINISHME: implement this */ + } else { + /* Unsupported builtin - some are not allowed in constant expressions. */ + return NULL; + } + + if (expr != NULL) + return expr->constant_expression_value(); + + return new(mem_ctx) ir_constant(this->type, &data); +} |