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-rw-r--r--builtin_function.cpp77
-rw-r--r--builtins/110_fs/derivatives73
-rw-r--r--ir.cpp5
-rw-r--r--ir.h8
4 files changed, 163 insertions, 0 deletions
diff --git a/builtin_function.cpp b/builtin_function.cpp
index 377fd50955..4ee43df5dc 100644
--- a/builtin_function.cpp
+++ b/builtin_function.cpp
@@ -2496,6 +2496,82 @@ static const char *functions_for_110 [] = {
/* 110_fs builtins */
+static const char *builtins_110_fs_derivatives = {
+ "((function dFdx\n"
+ " (signature float\n"
+ " (parameters\n"
+ " (declare (in) float p))\n"
+ " ((return (expression float dFdx (var_ref p)))))\n"
+ "\n"
+ " (signature vec2\n"
+ " (parameters\n"
+ " (declare (in) vec2 p))\n"
+ " ((return (expression vec2 dFdx (var_ref p)))))\n"
+ "\n"
+ " (signature vec3\n"
+ " (parameters\n"
+ " (declare (in) vec3 p))\n"
+ " ((return (expression vec3 dFdx (var_ref p)))))\n"
+ "\n"
+ " (signature vec4\n"
+ " (parameters\n"
+ " (declare (in) vec4 p))\n"
+ " ((return (expression vec4 dFdx (var_ref p)))))\n"
+ " )\n"
+ "\n"
+ " (function dFdy\n"
+ " (signature float\n"
+ " (parameters\n"
+ " (declare (in) float p))\n"
+ " ((return (expression float dFdy (var_ref p)))))\n"
+ "\n"
+ " (signature vec2\n"
+ " (parameters\n"
+ " (declare (in) vec2 p))\n"
+ " ((return (expression vec2 dFdy (var_ref p)))))\n"
+ "\n"
+ " (signature vec3\n"
+ " (parameters\n"
+ " (declare (in) vec3 p))\n"
+ " ((return (expression vec3 dFdy (var_ref p)))))\n"
+ "\n"
+ " (signature vec4\n"
+ " (parameters\n"
+ " (declare (in) vec4 p))\n"
+ " ((return (expression vec4 dFdy (var_ref p)))))\n"
+ " )\n"
+ "\n"
+ " (function fwidth\n"
+ " (signature float\n"
+ " (parameters\n"
+ " (declare (in) float p))\n"
+ " ((return (expression float +\n"
+ " (expression float abs (expression float dFdx (var_ref p)))\n"
+ " (expression float abs (expression float dFdy (var_ref p)))))))\n"
+ "\n"
+ " (signature vec2\n"
+ " (parameters\n"
+ " (declare (in) vec2 p))\n"
+ " ((return (expression vec2 +\n"
+ " (expression vec2 abs (expression vec2 dFdx (var_ref p)))\n"
+ " (expression vec2 abs (expression vec2 dFdy (var_ref p)))))))\n"
+ "\n"
+ " (signature vec3\n"
+ " (parameters\n"
+ " (declare (in) vec3 p))\n"
+ " ((return (expression vec3 +\n"
+ " (expression vec3 abs (expression vec3 dFdx (var_ref p)))\n"
+ " (expression vec3 abs (expression vec3 dFdy (var_ref p)))))))\n"
+ "\n"
+ " (signature vec4\n"
+ " (parameters\n"
+ " (declare (in) vec4 p))\n"
+ " ((return (expression vec4 +\n"
+ " (expression vec4 abs (expression vec4 dFdx (var_ref p)))\n"
+ " (expression vec4 abs (expression vec4 dFdy (var_ref p)))))))\n"
+ "))\n"
+};
+
static const char *builtins_110_fs_textures = {
"((function texture1D\n"
" (signature vec4\n"
@@ -2613,6 +2689,7 @@ static const char *builtins_110_fs_textures = {
};
static const char *functions_for_110_fs [] = {
+ builtins_110_fs_derivatives,
builtins_110_fs_textures,
};
diff --git a/builtins/110_fs/derivatives b/builtins/110_fs/derivatives
new file mode 100644
index 0000000000..b79852ee1f
--- /dev/null
+++ b/builtins/110_fs/derivatives
@@ -0,0 +1,73 @@
+((function dFdx
+ (signature float
+ (parameters
+ (declare (in) float p))
+ ((return (expression float dFdx (var_ref p)))))
+
+ (signature vec2
+ (parameters
+ (declare (in) vec2 p))
+ ((return (expression vec2 dFdx (var_ref p)))))
+
+ (signature vec3
+ (parameters
+ (declare (in) vec3 p))
+ ((return (expression vec3 dFdx (var_ref p)))))
+
+ (signature vec4
+ (parameters
+ (declare (in) vec4 p))
+ ((return (expression vec4 dFdx (var_ref p)))))
+ )
+
+ (function dFdy
+ (signature float
+ (parameters
+ (declare (in) float p))
+ ((return (expression float dFdy (var_ref p)))))
+
+ (signature vec2
+ (parameters
+ (declare (in) vec2 p))
+ ((return (expression vec2 dFdy (var_ref p)))))
+
+ (signature vec3
+ (parameters
+ (declare (in) vec3 p))
+ ((return (expression vec3 dFdy (var_ref p)))))
+
+ (signature vec4
+ (parameters
+ (declare (in) vec4 p))
+ ((return (expression vec4 dFdy (var_ref p)))))
+ )
+
+ (function fwidth
+ (signature float
+ (parameters
+ (declare (in) float p))
+ ((return (expression float +
+ (expression float abs (expression float dFdx (var_ref p)))
+ (expression float abs (expression float dFdy (var_ref p)))))))
+
+ (signature vec2
+ (parameters
+ (declare (in) vec2 p))
+ ((return (expression vec2 +
+ (expression vec2 abs (expression vec2 dFdx (var_ref p)))
+ (expression vec2 abs (expression vec2 dFdy (var_ref p)))))))
+
+ (signature vec3
+ (parameters
+ (declare (in) vec3 p))
+ ((return (expression vec3 +
+ (expression vec3 abs (expression vec3 dFdx (var_ref p)))
+ (expression vec3 abs (expression vec3 dFdy (var_ref p)))))))
+
+ (signature vec4
+ (parameters
+ (declare (in) vec4 p))
+ ((return (expression vec4 +
+ (expression vec4 abs (expression vec4 dFdx (var_ref p)))
+ (expression vec4 abs (expression vec4 dFdy (var_ref p)))))))
+))
diff --git a/ir.cpp b/ir.cpp
index ca34c24719..c5eb94d2d5 100644
--- a/ir.cpp
+++ b/ir.cpp
@@ -76,6 +76,9 @@ ir_expression::get_num_operands(ir_expression_operation op)
1, /* ir_unop_sin */
1, /* ir_unop_cos */
+ 1, /* ir_unop_dFdx */
+ 1, /* ir_unop_dFdy */
+
2, /* ir_binop_add */
2, /* ir_binop_sub */
2, /* ir_binop_mul */
@@ -136,6 +139,8 @@ static const char *const operator_strs[] = {
"floor",
"sin",
"cos",
+ "dFdx",
+ "dFdy",
"+",
"-",
"*",
diff --git a/ir.h b/ir.h
index 78ea196ffb..ea4f549468 100644
--- a/ir.h
+++ b/ir.h
@@ -494,6 +494,14 @@ enum ir_expression_operation {
ir_unop_cos,
/*@}*/
+ /**
+ * \name Partial derivatives.
+ */
+ /*@{*/
+ ir_unop_dFdx,
+ ir_unop_dFdy,
+ /*@}*/
+
ir_binop_add,
ir_binop_sub,
ir_binop_mul,
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-25 11:34:47 +0000