diff options
| author | Kenneth Graunke <kenneth@whitecape.org> | 2010-07-21 20:24:29 -0700 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2010-07-28 15:46:28 -0700 |
| commit | d60b2b03da30093ae85458f1d0be3cc5c33d992c (patch) | |
| tree | 904fe89d68c8cd1706c514b8b4bb06fcee5b842d /src/glsl/ir_constant_expression.cpp | |
| parent | 53f306d573ce6393062cf86d4fe31148eacc5e1e (diff) | |
ir_constant_expression: Add support for the "reflect" builtin.
Diffstat (limited to 'src/glsl/ir_constant_expression.cpp')
| -rw-r--r-- | src/glsl/ir_constant_expression.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 809ea609a3..c8320814a3 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -1013,7 +1013,10 @@ ir_call::constant_expression_value() for (unsigned c = 0; c < op[0]->type->components(); c++) data.f[c] = M_PI/180.0 * op[0]->value.f[c]; } else if (strcmp(callee, "reflect") == 0) { - return NULL; /* FINISHME: implement this */ + assert(op[0]->type->is_float()); + float dot_NI = dot(op[1], op[0]); + for (unsigned c = 0; c < op[0]->type->components(); c++) + data.f[c] = op[0]->value.f[c] - 2 * dot_NI * op[1]->value.f[c]; } else if (strcmp(callee, "refract") == 0) { return NULL; /* FINISHME: implement this */ } else if (strcmp(callee, "sign") == 0) { |