specialization: Fix uniform buffer size check.

Author: squidbus

src/shader_recompiler/specialization.h

@@ -16,6 +16,10 @@ struct VsAttribSpecialization {
     AmdGpu::NumberClass num_class{};
 
     auto operator<=>(const VsAttribSpecialization&) const = default;
+
+    [[nodiscard]] bool IsCompatible(const VsAttribSpecialization& other) const {
+        return *this == other;
+    }
 };
 
 struct BufferSpecialization {
@@ -26,7 +30,7 @@ struct BufferSpecialization {
     u8 element_size : 2 = 0;
     u32 size = 0;
 
-    bool operator==(const BufferSpecialization& other) const {
+    [[nodiscard]] bool IsCompatible(const BufferSpecialization& other) const {
         return stride == other.stride && is_storage == other.is_storage &&
                swizzle_enable == other.swizzle_enable &&
                (!swizzle_enable ||
@@ -41,6 +45,10 @@ struct TextureBufferSpecialization {
     AmdGpu::NumberConversion num_conversion{};
 
     auto operator<=>(const TextureBufferSpecialization&) const = default;
+
+    [[nodiscard]] bool IsCompatible(const TextureBufferSpecialization& other) const {
+        return *this == other;
+    }
 };
 
 struct ImageSpecialization {
@@ -51,19 +59,31 @@ struct ImageSpecialization {
     AmdGpu::NumberConversion num_conversion{};
 
     auto operator<=>(const ImageSpecialization&) const = default;
+
+    [[nodiscard]] bool IsCompatible(const ImageSpecialization& other) const {
+        return *this == other;
+    }
 };
 
 struct FMaskSpecialization {
     u32 width;
     u32 height;
 
     auto operator<=>(const FMaskSpecialization&) const = default;
+
+    [[nodiscard]] bool IsCompatible(const FMaskSpecialization& other) const {
+        return *this == other;
+    }
 };
 
 struct SamplerSpecialization {
     bool force_unnormalized = false;
 
     auto operator<=>(const SamplerSpecialization&) const = default;
+
+    [[nodiscard]] bool IsCompatible(const SamplerSpecialization& other) const {
+        return *this == other;
+    }
 };
 
 /**
@@ -179,7 +199,9 @@ struct StageSpecialization {
         }
     }
 
-    bool operator==(const StageSpecialization& other) const {
+    /// Checks if the permutation this specialization is for can be used in place of 'other'.
+    /// Note that this operation is not bidirectional.
+    [[nodiscard]] bool IsCompatible(const StageSpecialization& other) const {
         if (start != other.start) {
             return false;
         }
@@ -190,7 +212,7 @@ struct StageSpecialization {
             return false;
         }
         for (u32 i = 0; i < vs_attribs.size(); i++) {
-            if (vs_attribs[i] != other.vs_attribs[i]) {
+            if (!vs_attribs[i].IsCompatible(other.vs_attribs[i])) {
                 return false;
             }
         }
@@ -202,27 +224,27 @@ struct StageSpecialization {
             binding++;
         }
         for (u32 i = 0; i < buffers.size(); i++) {
-            if (other.bitset[binding++] && buffers[i] != other.buffers[i]) {
+            if (other.bitset[binding++] && !buffers[i].IsCompatible(other.buffers[i])) {
                 return false;
             }
         }
         for (u32 i = 0; i < tex_buffers.size(); i++) {
-            if (other.bitset[binding++] && tex_buffers[i] != other.tex_buffers[i]) {
+            if (other.bitset[binding++] && !tex_buffers[i].IsCompatible(other.tex_buffers[i])) {
                 return false;
             }
         }
         for (u32 i = 0; i < images.size(); i++) {
-            if (other.bitset[binding++] && images[i] != other.images[i]) {
+            if (other.bitset[binding++] && !images[i].IsCompatible(other.images[i])) {
                 return false;
             }
         }
         for (u32 i = 0; i < fmasks.size(); i++) {
-            if (other.bitset[binding++] && fmasks[i] != other.fmasks[i]) {
+            if (other.bitset[binding++] && !fmasks[i].IsCompatible(other.fmasks[i])) {
                 return false;
             }
         }
         for (u32 i = 0; i < samplers.size(); i++) {
-            if (samplers[i] != other.samplers[i]) {
+            if (!samplers[i].IsCompatible(other.samplers[i])) {
                 return false;
             }
         }

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -517,8 +517,9 @@ PipelineCache::Result PipelineCache::GetProgram(Stage stage, LogicalStage l_stag
         auto start = binding;
         const auto module = CompileModule(program->info, runtime_info, params.code, 0, binding);
         const auto spec = Shader::StageSpecialization(program->info, runtime_info, profile, start);
+        const auto fetch_shader = spec.fetch_shader_data;
         program->AddPermut(module, std::move(spec));
-        return std::make_tuple(&program->info, module, spec.fetch_shader_data,
+        return std::make_tuple(&program->info, module, fetch_shader,
                                HashCombine(params.hash, 0));
     }
     it_pgm.value()->info.user_data = params.user_data;
@@ -527,10 +528,13 @@ PipelineCache::Result PipelineCache::GetProgram(Stage stage, LogicalStage l_stag
     auto& info = program->info;
     info.RefreshFlatBuf();
     const auto spec = Shader::StageSpecialization(info, runtime_info, profile, binding);
+    const auto fetch_shader = spec.fetch_shader_data;
     size_t perm_idx = program->modules.size();
     vk::ShaderModule module{};
 
-    const auto it = std::ranges::find(program->modules, spec, &Program::Module::spec);
+    const auto it = std::ranges::find_if(program->modules, [&spec](const auto& module) {
+        return module.spec.IsCompatible(spec);
+    });
     if (it == program->modules.end()) {
         auto new_info = Shader::Info(stage, l_stage, params);
         module = CompileModule(new_info, runtime_info, params.code, perm_idx, binding);
@@ -540,8 +544,7 @@ PipelineCache::Result PipelineCache::GetProgram(Stage stage, LogicalStage l_stag
         module = it->module;
         perm_idx = std::distance(program->modules.begin(), it);
     }
-    return std::make_tuple(&info, module, spec.fetch_shader_data,
-                           HashCombine(params.hash, perm_idx));
+    return std::make_tuple(&info, module, fetch_shader, HashCombine(params.hash, perm_idx));
 }
 
 std::optional<vk::ShaderModule> PipelineCache::ReplaceShader(vk::ShaderModule module,