glsl: Add support for OES_standard_derivatives in GLSL ES.

Previously, we advertised the extension but the builtin functions
were enabled only for GLSL and not for ES.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=52003

Signed-off-by: Tomeu Vizoso <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/glsl/builtins/profiles/OES_standard_derivatives.frag b/src/glsl/builtins/profiles/OES_standard_derivatives.frag
new file mode 100644
index 00000000000..2c6ea07e961
--- /dev/null
+++ b/src/glsl/builtins/profiles/OES_standard_derivatives.frag
@@ -0,0 +1,20 @@
+#version 100
+#extension GL_OES_standard_derivatives : enable
+
+/*
+ * 8.8 - Fragment Processing Functions
+ */
+float dFdx(float p);
+vec2  dFdx(vec2  p);
+vec3  dFdx(vec3  p);
+vec4  dFdx(vec4  p);
+
+float dFdy(float p);
+vec2  dFdy(vec2  p);
+vec3  dFdy(vec3  p);
+vec4  dFdy(vec4  p);
+
+float fwidth(float p);
+vec2  fwidth(vec2  p);
+vec3  fwidth(vec3  p);
+vec4  fwidth(vec4  p);