Menu screens: rock background, centred frame, logo, 3D hero

- Spielen hero panel shows the selected hero in 3D (cUI_NetGranny,
  game/ui/granny.h).
- All menu screens draw on the options' rock wall; the main menu's 1024
  frame is drawn centred over it, mouse and cursor shifted to match.
- The main menu's and options' own pictures and the main menu's 3D scene
  are left out (textures hidden by surface, scene call redirected).
- Logo top left: FX_SACREDLOGO.TGA, drawn added.
- Game textures by name (game/ui/texture.h), textured and added quads.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/game/ui/draw.h

@@ -10,6 +10,12 @@ namespace game {
 
 constexpr int kDeviceDrawPrimitive = 25;  // IDirect3DDevice7 vtable slots
 constexpr int kDeviceSetTexture = 35;
+constexpr int kDeviceSetRenderState = 20;
+constexpr int kDeviceGetRenderState = 21;
+constexpr DWORD kStateSourceBlend = 19;  // D3DRENDERSTATETYPE
+constexpr DWORD kStateDestinationBlend = 20;
+constexpr DWORD kStateAlphaBlendEnable = 27;
+constexpr DWORD kBlendOne = 2;  // D3DBLEND
 constexpr DWORD kTriangleStrip = 5;
 constexpr DWORD kFvfScreenColourTexture = 0x1c4;  // XYZRHW | DIFFUSE | SPECULAR | TEX1
 
@@ -19,6 +25,45 @@ struct ScreenVertex {
     float u, v;
 };
 
+// Draws (x0, y0)-(x1, y1) with `surface` (a texture's Direct3D surface,
+// game/ui/texture.h) from (u0, v0) to (u1, v1), tinted by `colour`.
+inline void DrawTextured(void* device, void* surface, float x0, float y0, float x1, float y1, float u0, float v0,
+                         float u1, float v1, uint32_t colour = 0xffffffff) {
+    void** vtable = *static_cast<void***>(device);
+    using SetTextureFn = HRESULT(__stdcall*)(void*, DWORD, void*);
+    using DrawPrimitiveFn = HRESULT(__stdcall*)(void*, DWORD, DWORD, void*, DWORD, DWORD);
+    reinterpret_cast<SetTextureFn>(vtable[kDeviceSetTexture])(device, 0, surface);
+    ScreenVertex quad[4] = {{x0, y0, 0, 1, colour, 0, u0, v0},
+                            {x1, y0, 0, 1, colour, 0, u1, v0},
+                            {x0, y1, 0, 1, colour, 0, u0, v1},
+                            {x1, y1, 0, 1, colour, 0, u1, v1}};
+    reinterpret_cast<DrawPrimitiveFn>(vtable[kDeviceDrawPrimitive])(device, kTriangleStrip, kFvfScreenColourTexture,
+                                                                     quad, 4, 0);
+    reinterpret_cast<SetTextureFn>(vtable[kDeviceSetTexture])(device, 0, nullptr);
+}
+
+// DrawTextured added onto what is drawn (source and destination blend ONE):
+// for the effect textures, drawn on black without alpha.
+inline void DrawTexturedAdded(void* device, void* surface, float x0, float y0, float x1, float y1, float u0,
+                              float v0, float u1, float v1) {
+    void** vtable = *static_cast<void***>(device);
+    using SetRenderStateFn = HRESULT(__stdcall*)(void*, DWORD, DWORD);
+    using GetRenderStateFn = HRESULT(__stdcall*)(void*, DWORD, DWORD*);
+    const auto set = reinterpret_cast<SetRenderStateFn>(vtable[kDeviceSetRenderState]);
+    const auto get = reinterpret_cast<GetRenderStateFn>(vtable[kDeviceGetRenderState]);
+    DWORD blending = 0, source = 0, destination = 0;
+    get(device, kStateAlphaBlendEnable, &blending);
+    get(device, kStateSourceBlend, &source);
+    get(device, kStateDestinationBlend, &destination);
+    set(device, kStateAlphaBlendEnable, TRUE);
+    set(device, kStateSourceBlend, kBlendOne);
+    set(device, kStateDestinationBlend, kBlendOne);
+    DrawTextured(device, surface, x0, y0, x1, y1, u0, v0, u1, v1);
+    set(device, kStateAlphaBlendEnable, blending);
+    set(device, kStateSourceBlend, source);
+    set(device, kStateDestinationBlend, destination);
+}
+
 // Fills (x0, y0)-(x1, y1), ARGB colours per corner: top left, top right,
 // bottom left, bottom right (blended between them).
 inline void FillCorners(void* device, float x0, float y0, float x1, float y1, uint32_t topLeft, uint32_t topRight,