Import aap/librw @ masterHEADmaster

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).

1 files changed, 30 insertions, 0 deletions

diff --git a/src/gl/shaders/header.frag b/src/gl/shaders/header.frag
new file mode 100644
index 0000000..ba50165
--- /dev/null
+++ b/src/gl/shaders/header.frag
@@ -0,0 +1,30 @@
+#ifdef USE_UBOS
+layout(std140) uniform State
+{
+	vec2 u_alphaRef;
+	vec4  u_fogData;
+	vec4  u_fogColor;
+};
+#else
+uniform vec4 u_alphaRef;
+
+uniform vec4  u_fogData;
+uniform vec4  u_fogColor;
+#endif
+
+#define u_fogStart (u_fogData.x)
+#define u_fogEnd (u_fogData.y)
+#define u_fogRange (u_fogData.z)
+#define u_fogDisable (u_fogData.w)
+
+#ifndef GL2
+out vec4 fragColor;
+#endif
+
+void DoAlphaTest(float a)
+{
+#ifndef NO_ALPHATEST
+	if(a < u_alphaRef.x || a >= u_alphaRef.y)
+		discard;
+#endif
+}