texture_cache uncompress-compress is untopological.

This makes conflicts between non compress and compress textures to be 
auto recycled. It also limits the amount of mipmaps a texture can have 
if it goes above it's limit.

src/video_core/renderer_opengl/gl_texture_cache.cpp

@@ -195,17 +195,17 @@ OGLTexture CreateTexture(const SurfaceParams& params, GLenum target, GLenum inte
 
     switch (params.target) {
     case SurfaceTarget::Texture1D:
-        glTextureStorage1D(texture.handle, params.num_levels, internal_format, params.width);
+        glTextureStorage1D(texture.handle, params.emulated_levels, internal_format, params.width);
         break;
     case SurfaceTarget::Texture2D:
     case SurfaceTarget::TextureCubemap:
-        glTextureStorage2D(texture.handle, params.num_levels, internal_format, params.width,
+        glTextureStorage2D(texture.handle, params.emulated_levels, internal_format, params.width,
                            params.height);
         break;
     case SurfaceTarget::Texture3D:
     case SurfaceTarget::Texture2DArray:
     case SurfaceTarget::TextureCubeArray:
-        glTextureStorage3D(texture.handle, params.num_levels, internal_format, params.width,
+        glTextureStorage3D(texture.handle, params.emulated_levels, internal_format, params.width,
                            params.height, params.depth);
         break;
     default:
@@ -245,7 +245,7 @@ void CachedSurface::DownloadTexture(std::vector<u8>& staging_buffer) {
     // TODO(Rodrigo): Optimize alignment
     SCOPE_EXIT({ glPixelStorei(GL_PACK_ROW_LENGTH, 0); });
 
-    for (u32 level = 0; level < params.num_levels; ++level) {
+    for (u32 level = 0; level < params.emulated_levels; ++level) {
         glPixelStorei(GL_PACK_ALIGNMENT, std::min(8U, params.GetRowAlignment(level)));
         glPixelStorei(GL_PACK_ROW_LENGTH, static_cast<GLint>(params.GetMipWidth(level)));
         const std::size_t mip_offset = params.GetHostMipmapLevelOffset(level);
@@ -264,7 +264,7 @@ void CachedSurface::DownloadTexture(std::vector<u8>& staging_buffer) {
 void CachedSurface::UploadTexture(std::vector<u8>& staging_buffer) {
     MICROPROFILE_SCOPE(OpenGL_Texture_Upload);
     SCOPE_EXIT({ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); });
-    for (u32 level = 0; level < params.num_levels; ++level) {
+    for (u32 level = 0; level < params.emulated_levels; ++level) {
         UploadTextureMipmap(level, staging_buffer);
     }
 }

src/video_core/texture_cache/surface_base.h

@@ -32,6 +32,12 @@ enum class MatchStructureResult : u32 {
     None = 2,
 };
 
+enum class MatchTopologyResult : u32 {
+    FullMatch = 0,
+    CompressUnmatch = 1,
+    None = 2,
+};
+
 class StagingCache {
 public:
     StagingCache() {}
@@ -136,12 +142,20 @@ public:
                params.target == SurfaceTarget::Texture2D && params.num_levels == 1;
     }
 
-    bool MatchesTopology(const SurfaceParams& rhs) const {
+    MatchTopologyResult MatchesTopology(const SurfaceParams& rhs) const {
         const u32 src_bpp{params.GetBytesPerPixel()};
         const u32 dst_bpp{rhs.GetBytesPerPixel()};
         const bool ib1 = params.IsBuffer();
         const bool ib2 = rhs.IsBuffer();
-        return std::tie(src_bpp, params.is_tiled, ib1) == std::tie(dst_bpp, rhs.is_tiled, ib2);
+        if (std::tie(src_bpp, params.is_tiled, ib1) == std::tie(dst_bpp, rhs.is_tiled, ib2)) {
+            const bool cb1 = params.IsCompressed();
+            const bool cb2 = rhs.IsCompressed();
+            if (cb1 == cb2) {
+                return MatchTopologyResult::FullMatch;
+            }
+            return MatchTopologyResult::CompressUnmatch;
+        }
+        return MatchTopologyResult::None;
     }
 
     MatchStructureResult MatchesStructure(const SurfaceParams& rhs) const {

src/video_core/texture_cache/surface_params.cpp

@@ -85,6 +85,7 @@ SurfaceParams SurfaceParams::CreateForTexture(Core::System& system,
     }
     params.pitch = params.is_tiled ? 0 : config.tic.Pitch();
     params.num_levels = config.tic.max_mip_level + 1;
+    params.emulated_levels = std::min(params.num_levels, params.MaxPossibleMipmap());
     params.is_layered = params.IsLayered();
     return params;
 }
@@ -109,6 +110,7 @@ SurfaceParams SurfaceParams::CreateForDepthBuffer(
     params.depth = 1;
     params.pitch = 0;
     params.num_levels = 1;
+    params.emulated_levels = 1;
     params.is_layered = false;
     return params;
 }
@@ -139,6 +141,7 @@ SurfaceParams SurfaceParams::CreateForFramebuffer(Core::System& system, std::siz
     params.depth = 1;
     params.target = SurfaceTarget::Texture2D;
     params.num_levels = 1;
+    params.emulated_levels = 1;
     params.is_layered = false;
     return params;
 }
@@ -163,6 +166,7 @@ SurfaceParams SurfaceParams::CreateForFermiCopySurface(
     params.target = SurfaceTarget::Texture2D;
     params.depth = 1;
     params.num_levels = 1;
+    params.emulated_levels = 1;
     params.is_layered = params.IsLayered();
     return params;
 }

src/video_core/texture_cache/surface_params.h

@@ -160,6 +160,19 @@ public:
         return std::min(t_src_height, t_dst_height);
     }
 
+    u32 MaxPossibleMipmap() const {
+        const u32 max_mipmap_w = Common::Log2Ceil32(width) + 1U;
+        const u32 max_mipmap_h = Common::Log2Ceil32(height) + 1U;
+        const u32 max_mipmap = std::max(max_mipmap_w, max_mipmap_h);
+        if (target != VideoCore::Surface::SurfaceTarget::Texture3D)
+            return max_mipmap;
+        return std::max(max_mipmap, Common::Log2Ceil32(depth) + 1U);
+    }
+
+    bool IsCompressed() const {
+        return GetDefaultBlockHeight() > 1 || GetDefaultBlockWidth() > 1;
+    }
+
     /// Returns the default block width.
     u32 GetDefaultBlockWidth() const {
         return VideoCore::Surface::GetDefaultBlockWidth(pixel_format);
@@ -205,6 +218,7 @@ public:
     u32 depth;
     u32 pitch;
     u32 num_levels;
+    u32 emulated_levels;
     VideoCore::Surface::PixelFormat pixel_format;
     VideoCore::Surface::ComponentType component_type;
     VideoCore::Surface::SurfaceType type;

src/video_core/texture_cache/texture_cache.h

@@ -305,7 +305,7 @@ private:
      * due to topological reasons.
      **/
     RecycleStrategy PickStrategy(std::vector<TSurface>& overlaps, const SurfaceParams& params,
-                                 const GPUVAddr gpu_addr, const bool untopological) {
+                                 const GPUVAddr gpu_addr, const MatchTopologyResult untopological) {
         if (Settings::values.use_accurate_gpu_emulation) {
             return RecycleStrategy::Flush;
         }
@@ -320,8 +320,8 @@ private:
             }
         }
         // Untopological decision
-        if (untopological) {
-            return RecycleStrategy::Ignore;
+        if (untopological == MatchTopologyResult::CompressUnmatch) {
+            return RecycleStrategy::Flush;
         }
         return RecycleStrategy::Ignore;
     }
@@ -341,7 +341,7 @@ private:
     std::pair<TSurface, TView> RecycleSurface(std::vector<TSurface>& overlaps,
                                               const SurfaceParams& params, const GPUVAddr gpu_addr,
                                               const bool preserve_contents,
-                                              const bool untopological) {
+                                              const MatchTopologyResult untopological) {
         const bool do_load = Settings::values.use_accurate_gpu_emulation && preserve_contents;
         for (auto surface : overlaps) {
             Unregister(surface);
@@ -502,9 +502,10 @@ private:
         // matches at certain level we are pretty much done.
         if (l1_cache.count(cache_addr) > 0) {
             TSurface current_surface = l1_cache[cache_addr];
-            if (!current_surface->MatchesTopology(params)) {
+            auto topological_result = current_surface->MatchesTopology(params);
+            if (topological_result != MatchTopologyResult::FullMatch) {
                 std::vector<TSurface> overlaps{current_surface};
-                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, true);
+                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, topological_result);
             }
             MatchStructureResult s_result = current_surface->MatchesStructure(params);
             if (s_result != MatchStructureResult::None &&
@@ -534,8 +535,9 @@ private:
         // we do a topological test to ensure we can find some relationship. If it fails
         // inmediatly recycle the texture
         for (auto surface : overlaps) {
-            if (!surface->MatchesTopology(params)) {
-                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, true);
+            auto topological_result = surface->MatchesTopology(params);
+            if (topological_result != MatchTopologyResult::FullMatch) {
+                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, topological_result);
             }
         }
 
@@ -553,7 +555,7 @@ private:
                         return *view;
                     }
                 }
-                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, false);
+                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, MatchTopologyResult::FullMatch);
             }
             // Now we check if the candidate is a mipmap/layer of the overlap
             std::optional<TView> view =
@@ -576,13 +578,13 @@ private:
                         pair.first->EmplaceView(params, gpu_addr, candidate_size);
                     if (mirage_view)
                         return {pair.first, *mirage_view};
-                    return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, false);
+                    return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, MatchTopologyResult::FullMatch);
                 }
                 return {current_surface, *view};
             }
             // The next case is unsafe, so if we r in accurate GPU, just skip it
             if (Settings::values.use_accurate_gpu_emulation) {
-                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, false);
+                return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, MatchTopologyResult::FullMatch);
             }
             // This is the case the texture is a part of the parent.
             if (current_surface->MatchesSubTexture(params, gpu_addr)) {
@@ -599,7 +601,7 @@ private:
             }
         }
         // We failed all the tests, recycle the overlaps into a new texture.
-        return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, false);
+        return RecycleSurface(overlaps, params, gpu_addr, preserve_contents, MatchTopologyResult::FullMatch);
     }
 
     std::pair<TSurface, TView> InitializeSurface(GPUVAddr gpu_addr, const SurfaceParams& params,