Initial commit

client/common/shaders/bgfx_source/ui.sc

@@ -0,0 +1,38 @@
+$input a_position, a_texcoord0, a_color0
+$output v_texcoord0, v_color0, v_texcoord1
+
+#include "common.sh"
+
+uniform vec4 u_uiParams; // x = luminance sampling on/off, w = z offset
+SAMPLER2D(s_diffuseMap, 0);
+
+void UIVS()
+{
+    gl_Position = mul(u_viewProjection, vec4(a_position, 1.0));
+    gl_Position.z -= u_uiParams.w; // against z-fighting
+
+    v_texcoord0 = a_texcoord0;
+    v_color0 = a_color0;
+
+#if defined(PIN_FOG)
+    v_texcoord1.x = (u_fogParams.z - gl_Position.w) * u_fogParams.w;
+#endif
+}
+
+void UIPS()
+{
+    vec4 base;
+
+    if (u_uiParams.x > 0.5)
+        base = vec4(1.0, 1.0, 1.0, texture2D(s_diffuseMap, v_texcoord0).r);
+    else
+        base = texture2D(s_diffuseMap, v_texcoord0);
+
+    vec4 result = v_color0 * base;
+
+#if defined(PIN_FOG)
+    result.rgb = mix(u_fogColor, result.rgb, saturate(v_texcoord1.x));
+#endif
+
+    gl_FragColor = result;
+}