1 files changed, 34 insertions, 0 deletions
diff --git a/src/gl/shaders/matfx_env.frag b/src/gl/shaders/matfx_env.frag
new file mode 100644
index 0000000..0ef20d1
--- /dev/null
+++ b/src/gl/shaders/matfx_env.frag
@@ -0,0 +1,34 @@
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+
+uniform vec4 u_fxparams;
+
+#define shininess (u_fxparams.x)
+#define disableFBA (u_fxparams.y)
+
+FSIN vec4 v_color;
+FSIN vec4 v_envColor;
+FSIN vec2 v_tex0;
+FSIN vec2 v_tex1;
+FSIN float v_fog;
+
+void
+main(void)
+{
+	vec4 pass1 = v_color;
+	pass1 *= texture(tex0, vec2(v_tex0.x, 1.0-v_tex0.y));
+
+	vec4 pass2 = v_envColor*shininess*texture(tex1, vec2(v_tex1.x, 1.0-v_tex1.y));
+
+	pass1.rgb = mix(u_fogColor.rgb, pass1.rgb, v_fog);
+	pass2.rgb = mix(vec3(0.0, 0.0, 0.0), pass2.rgb, v_fog);
+
+	float fba = max(pass1.a, disableFBA);
+	vec4 color;
+	color.rgb = pass1.rgb*pass1.a + pass2.rgb*fba;
+	color.a = pass1.a;
+
+	DoAlphaTest(color.a);
+
+	FRAGCOLOR(color);
+}