glsl: Fix the setup of refract()'s output for vec3/vec4 and k < 0.0.

caught by valgrind.

diff --git a/src/glsl/builtin_function.cpp b/src/glsl/builtin_function.cpp
index 40c85e7..5b3b49d 100644 (file)
--- a/src/glsl/builtin_function.cpp
+++ b/src/glsl/builtin_function.cpp
@@ -1808,7 +1808,7 @@ static const char *builtins_110_refract = {
    "                   (expression float dot (var_ref n) (var_ref i))\n"
    "                   (expression float dot (var_ref n) (var_ref i))))))))\n"
    "      (if (expression bool < (var_ref k) (constant float (0.0)))\n"
-   "          ((return (constant vec3 (0.0 0.0))))\n"
+   "          ((return (constant vec3 (0.0 0.0 0.0))))\n"
    "     ((return (expression vec3 -\n"
    "                (expression vec3 * (var_ref eta) (var_ref i))\n"
    "                (expression vec3 *\n"
@@ -1833,7 +1833,7 @@ static const char *builtins_110_refract = {
    "                   (expression float dot (var_ref n) (var_ref i))\n"
    "                   (expression float dot (var_ref n) (var_ref i))))))))\n"
    "      (if (expression bool < (var_ref k) (constant float (0.0)))\n"
-   "          ((return (constant vec4 (0.0 0.0))))\n"
+   "          ((return (constant vec4 (0.0 0.0 0.0 0.0))))\n"
    "     ((return (expression vec4 -\n"
    "                (expression vec4 * (var_ref eta) (var_ref i))\n"
    "                (expression vec4 *\n"

diff --git a/src/glsl/builtins/110/refract b/src/glsl/builtins/110/refract
index e9b1475..522ab41 100644 (file)
--- a/src/glsl/builtins/110/refract
+++ b/src/glsl/builtins/110/refract
@@ -64,7 +64,7 @@
                        (expression float dot (var_ref n) (var_ref i))
                        (expression float dot (var_ref n) (var_ref i))))))))
       (if (expression bool < (var_ref k) (constant float (0.0)))
-          ((return (constant vec3 (0.0 0.0))))
+          ((return (constant vec3 (0.0 0.0 0.0))))
          ((return (expression vec3 -
                     (expression vec3 * (var_ref eta) (var_ref i))
                     (expression vec3 *
@@ -89,7 +89,7 @@
                        (expression float dot (var_ref n) (var_ref i))
                        (expression float dot (var_ref n) (var_ref i))))))))
       (if (expression bool < (var_ref k) (constant float (0.0)))
-          ((return (constant vec4 (0.0 0.0))))
+          ((return (constant vec4 (0.0 0.0 0.0 0.0))))
          ((return (expression vec4 -
                     (expression vec4 * (var_ref eta) (var_ref i))
                     (expression vec4 *