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Implement 'faceforward' builtin.

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This commit is contained in:
Kenneth Graunke
2010-06-09 13:27:16 -07:00
parent 29b22287fe
commit 539f29323f
2 changed files with 78 additions and 0 deletions
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builtin_function.cpp
+41
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@@ -689,6 +689,46 @@ static const char *builtins_110_exp2 = {
"))\n"
};
static const char *builtins_110_faceforward = {
"((function faceforward\n"
" (signature float\n"
" (parameters\n"
" (declare (in) float N)\n"
" (declare (in) float I)\n"
" (declare (in) float Nref))\n"
" ((if (expression bool < (expression float dot (var_ref Nref) (var_ref I)) (constant float (0)))\n"
" ((return (var_ref N)))\n"
" ((return (expression float neg (var_ref N)))))))\n"
"\n"
" (signature vec2\n"
" (parameters\n"
" (declare (in) vec2 N)\n"
" (declare (in) vec2 I)\n"
" (declare (in) vec2 Nref))\n"
" ((if (expression bool < (expression float dot (var_ref Nref) (var_ref I)) (constant float (0)))\n"
" ((return (var_ref N)))\n"
" ((return (expression vec2 neg (var_ref N)))))))\n"
"\n"
" (signature vec3\n"
" (parameters\n"
" (declare (in) vec3 N)\n"
" (declare (in) vec3 I)\n"
" (declare (in) vec3 Nref))\n"
" ((if (expression bool < (expression float dot (var_ref Nref) (var_ref I)) (constant float (0)))\n"
" ((return (var_ref N)))\n"
" ((return (expression vec3 neg (var_ref N)))))))\n"
"\n"
" (signature vec4\n"
" (parameters\n"
" (declare (in) vec4 N)\n"
" (declare (in) vec4 I)\n"
" (declare (in) vec4 Nref))\n"
" ((if (expression bool < (expression float dot (var_ref Nref) (var_ref I)) (constant float (0)))\n"
" ((return (var_ref N)))\n"
" ((return (expression vec4 neg (var_ref N)))))))\n"
"))\n"
};
static const char *builtins_110_floor = {
"((function floor\n"
" (signature float\n"
@@ -2215,6 +2255,7 @@ static const char *functions_for_110 [] = {
builtins_110_equal,
builtins_110_exp,
builtins_110_exp2,
builtins_110_faceforward,
builtins_110_floor,
builtins_110_fract,
builtins_110_greaterThan,