1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gles2/shaders/stdlib.glsl b/drivers/gles2/shaders/stdlib.glsl
new file mode 100644
index 0000000000..ebbdb96311
--- /dev/null
+++ b/drivers/gles2/shaders/stdlib.glsl
@@ -0,0 +1,45 @@
+
+vec2 select2(vec2 a, vec2 b, bvec2 c)
+{
+	vec2 ret;
+
+	ret.x = c.x ? b.x : a.x;
+	ret.y = c.y ? b.y : a.y;
+
+	return ret;
+}
+
+vec3 select3(vec3 a, vec3 b, bvec3 c)
+{
+	vec3 ret;
+
+	ret.x = c.x ? b.x : a.x;
+	ret.y = c.y ? b.y : a.y;
+	ret.z = c.z ? b.z : a.z;
+
+	return ret;
+}
+
+vec4 select4(vec4 a, vec4 b, bvec4 c)
+{
+	vec4 ret;
+
+	ret.x = c.x ? b.x : a.x;
+	ret.y = c.y ? b.y : a.y;
+	ret.z = c.z ? b.z : a.z;
+	ret.w = c.w ? b.w : a.w;
+
+	return ret;
+}
+
+
+highp vec4 texel2DFetch(highp sampler2D tex, ivec2 size, ivec2 coord)
+{
+	float x_coord = float(2 * coord.x + 1) / float(size.x * 2);
+	float y_coord = float(2 * coord.y + 1) / float(size.y * 2);
+
+	x_coord = float(coord.x) / float(size.x);
+	y_coord = float(coord.y) / float(size.y);
+
+	return texture2DLod(tex, vec2(x_coord, y_coord), 0.0);
+}