1 files changed, 39 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/environment/terrainWaterF.glsl b/indra/newview/app_settings/shaders/class2/environment/terrainWaterF.glsl
new file mode 100755
index 0000000000..3a98970f8c
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/environment/terrainWaterF.glsl
@@ -0,0 +1,39 @@
+/**
+ * @file terrainWaterF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D detail_0;
+uniform sampler2D detail_1;
+uniform sampler2D detail_2;
+uniform sampler2D detail_3;
+uniform sampler2D alpha_ramp;
+
+vec3 atmosLighting(vec3 light);
+
+vec4 applyWaterFog(vec4 color);
+
+void main()
+{
+	/// Note: This should duplicate the blending functionality currently used for the terrain rendering.
+	
+	/// TODO Confirm tex coords and bind them appropriately in vert shader.
+	vec4 color0 = texture2D(detail_0, gl_TexCoord[0].xy);
+	vec4 color1 = texture2D(detail_1, gl_TexCoord[0].xy);
+	vec4 color2 = texture2D(detail_2, gl_TexCoord[0].xy);
+	vec4 color3 = texture2D(detail_3, gl_TexCoord[0].xy);
+
+	float alpha1 = texture2D(alpha_ramp, gl_TexCoord[0].zw).a;
+	float alpha2 = texture2D(alpha_ramp,gl_TexCoord[1].xy).a;
+	float alphaFinal = texture2D(alpha_ramp, gl_TexCoord[1].zw).a;
+	vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
+	
+	/// Add WL Components
+	outColor.rgb = atmosLighting(outColor.rgb * gl_Color.rgb);
+	
+	outColor = applyWaterFog(outColor);
+	gl_FragColor = outColor;
+}
+