Slightly more accurate, likely going to have to change how paletted textures work

src/duskgl/display/shader/shaderunlitgl.c

@@ -9,7 +9,7 @@
 
 #ifdef DUSK_OPENGL_LEGACY
   shaderdefinition_t SHADER_UNLIT_DEFINITION = { 0 };
-#elifdef DUSK_OPENGL_ES
+#elif defined(DUSK_OPENGL_ES)
   shaderdefinition_t SHADER_UNLIT_DEFINITION = {
     .vert =
       "#version 300 es\n"
@@ -38,7 +38,7 @@
       "out vec4 FragColor;\n"
       "void main() {\n"
       "  vec4 texColor = texture(u_Texture, v_TexCoord);\n"
-      "  uint index = uint(floor(texColor.r * 255.0));\n"
+      "  uint index = uint(clamp(texColor.r * 255.0 + 0.5, 0.0, 255.0));\n"
       "  uint palColor = u_Colors[index];\n"
       "  float r = float((palColor >> 24) & 0xFFu) / 255.0;\n"
       "  float g = float((palColor >> 16) & 0xFFu) / 255.0;\n"
@@ -84,7 +84,6 @@
       "  float a = float((palColor >> 0)  & 0xFFu) / 255.0;\n"
       "  vec4 paletteColor = vec4(r, g, b, a);\n"
       "  FragColor = paletteColor;\n"
-      // "  FragColor = paletteColor * v_Color;\n"
       "}\n"
   };
 #endif