diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/glsl/ir.cpp | 85 | ||||
| -rw-r--r-- | src/glsl/ir.h | 6 |
2 files changed, 23 insertions, 68 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp index 04a7b874a9d..ba6903d8a3f 100644 --- a/src/glsl/ir.cpp +++ b/src/glsl/ir.cpp @@ -1122,27 +1122,31 @@ ir_constant::has_value(const ir_constant *c) const } bool -ir_constant::is_zero() const +ir_constant::is_value(float f, int i) const { if (!this->type->is_scalar() && !this->type->is_vector()) return false; + /* Only accept boolean values for 0/1. */ + if (int(bool(i)) != i && this->type->is_boolean()) + return false; + for (unsigned c = 0; c < this->type->vector_elements; c++) { switch (this->type->base_type) { case GLSL_TYPE_FLOAT: - if (this->value.f[c] != 0.0) + if (this->value.f[c] != f) return false; break; case GLSL_TYPE_INT: - if (this->value.i[c] != 0) + if (this->value.i[c] != i) return false; break; case GLSL_TYPE_UINT: - if (this->value.u[c] != 0) + if (this->value.u[c] != unsigned(i)) return false; break; case GLSL_TYPE_BOOL: - if (this->value.b[c] != false) + if (this->value.b[c] != bool(i)) return false; break; default: @@ -1159,76 +1163,21 @@ ir_constant::is_zero() const } bool -ir_constant::is_one() const +ir_constant::is_zero() const { - if (!this->type->is_scalar() && !this->type->is_vector()) - return false; - - for (unsigned c = 0; c < this->type->vector_elements; c++) { - switch (this->type->base_type) { - case GLSL_TYPE_FLOAT: - if (this->value.f[c] != 1.0) - return false; - break; - case GLSL_TYPE_INT: - if (this->value.i[c] != 1) - return false; - break; - case GLSL_TYPE_UINT: - if (this->value.u[c] != 1) - return false; - break; - case GLSL_TYPE_BOOL: - if (this->value.b[c] != true) - return false; - break; - default: - /* The only other base types are structures, arrays, and samplers. - * Samplers cannot be constants, and the others should have been - * filtered out above. - */ - assert(!"Should not get here."); - return false; - } - } + return is_value(0.0, 0); +} - return true; +bool +ir_constant::is_one() const +{ + return is_value(1.0, 1); } bool ir_constant::is_negative_one() const { - if (!this->type->is_scalar() && !this->type->is_vector()) - return false; - - if (this->type->is_boolean()) - return false; - - for (unsigned c = 0; c < this->type->vector_elements; c++) { - switch (this->type->base_type) { - case GLSL_TYPE_FLOAT: - if (this->value.f[c] != -1.0) - return false; - break; - case GLSL_TYPE_INT: - if (this->value.i[c] != -1) - return false; - break; - case GLSL_TYPE_UINT: - if (int(this->value.u[c]) != -1) - return false; - break; - default: - /* The only other base types are structures, arrays, samplers, and - * booleans. Samplers cannot be constants, and the others should - * have been filtered out above. - */ - assert(!"Should not get here."); - return false; - } - } - - return true; + return is_value(-1.0, -1); } bool diff --git a/src/glsl/ir.h b/src/glsl/ir.h index 780959b731b..4d863854bc6 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -2186,6 +2186,12 @@ public: */ bool has_value(const ir_constant *) const; + /** + * Return true if this ir_constant represents the given value. + * + * For vectors, this checks that each component is the given value. + */ + virtual bool is_value(float f, int i) const; virtual bool is_zero() const; virtual bool is_one() const; virtual bool is_negative_one() const; |