texture_cache: Correct premature texceptions

Due to our current infrastructure, it is possible for a mipmap to be set 
on as a render target before a texception of that mipmap's superset be 
set afterwards. This is problematic as we rely on texture views to set 
up texceptions and protecting render targets targets for 3D texture 
rendering.

One simple solution is to configure framebuffers after texture setup but 
this brings other problems. This solution, forces a reconfiguration of 
the framebuffers after such event happens.

1 files changed, 14 insertions, 3 deletions

diff --git a/src/video_core/texture_cache/surface_base.h b/src/video_core/texture_cache/surface_base.h
index 017ee999e..179e80ddb 100644
--- a/src/video_core/texture_cache/surface_base.h
+++ b/src/video_core/texture_cache/surface_base.h
@@ -55,6 +55,11 @@ public:
         return (cache_addr < end) && (cache_addr_end > start);
     }
 
+    bool IsInside(const GPUVAddr other_start, const GPUVAddr other_end) {
+        const GPUVAddr gpu_addr_end = gpu_addr + guest_memory_size;
+        return (gpu_addr <= other_start && other_end <= gpu_addr_end);
+    }
+
     // Use only when recycling a surface
     void SetGpuAddr(const GPUVAddr new_addr) {
         gpu_addr = new_addr;
@@ -105,6 +110,12 @@ public:
         return params.target == target;
     }
 
+    bool MatchesSubTexture(const SurfaceParams& rhs, const GPUVAddr other_gpu_addr) const {
+        return std::tie(gpu_addr, params.target, params.num_levels) ==
+                   std::tie(other_gpu_addr, rhs.target, rhs.num_levels) &&
+               params.target == SurfaceTarget::Texture2D && params.num_levels == 1;
+    }
+
     bool MatchesTopology(const SurfaceParams& rhs) const {
         const u32 src_bpp{params.GetBytesPerPixel()};
         const u32 dst_bpp{rhs.GetBytesPerPixel()};
@@ -121,9 +132,9 @@ public:
         }
         // Tiled surface
         if (std::tie(params.height, params.depth, params.block_width, params.block_height,
-                     params.block_depth, params.tile_width_spacing) ==
+                     params.block_depth, params.tile_width_spacing, params.num_levels) ==
             std::tie(rhs.height, rhs.depth, rhs.block_width, rhs.block_height, rhs.block_depth,
-                     rhs.tile_width_spacing)) {
+                     rhs.tile_width_spacing, rhs.num_levels)) {
             if (params.width == rhs.width) {
                 return MatchStructureResult::FullMatch;
             }
@@ -259,7 +270,7 @@ public:
 
     std::optional<TView> EmplaceView(const SurfaceParams& view_params, const GPUVAddr view_addr) {
         if (view_addr < gpu_addr || params.target == SurfaceTarget::Texture3D ||
-            view_params.target == SurfaceTarget::Texture3D) {
+            params.num_levels == 1 || view_params.target == SurfaceTarget::Texture3D) {
             return {};
         }
         const auto layer_mipmap{GetLayerMipmap(view_addr)};