Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

glsl/model.frag

@@ -0,0 +1,29 @@
+#version {VERSION}
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+uniform sampler2D Palette, DiffuseTexture;
+uniform vec2 Palettes;
+uniform float PaletteRows;
+
+uniform vec4 LightDirection;
+uniform vec3 AmbientLight, DiffuseLight;
+
+in vec4 vTexCoord;
+in vec4 vChannelMask;
+in vec4 vNormalsMask;
+out vec4 fragColor;
+
+void main()
+{
+	vec4 x = texture(DiffuseTexture, vTexCoord.st);
+	vec4 color = texture(Palette, vec2(dot(x, vChannelMask), (Palettes.x + 0.5) / PaletteRows));
+	if (color.a < 0.01)
+		discard;
+
+	vec4 y = texture(DiffuseTexture, vTexCoord.pq);
+	vec4 normal = (2.0 * texture(Palette, vec2(dot(y, vNormalsMask), (Palettes.y + 0.5) / PaletteRows)) - 1.0);
+	vec3 intensity = AmbientLight + DiffuseLight * max(dot(normal, LightDirection), 0.0);
+	fragColor = vec4(intensity * color.rgb, color.a);
+}