[vk, qcom] Default FP32

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -342,14 +342,15 @@ PipelineCache::PipelineCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
         .support_fp64_signed_zero_nan_preserve =
             float_control.shaderSignedZeroInfNanPreserveFloat64 != VK_FALSE,
         
-        // Switch/Maxwell native float behavior (auto-configured on Qualcomm)
+        // Switch/Maxwell native float behavior - ONLY for Turnip Mesa (Stock Qualcomm broken)
+        // Stock Adreno drivers have broken float controls disabled in vulkan_device.cpp
         .force_fp32_denorm_flush = driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY && 
-                                   device.IsKhrShaderFloatControlsSupported(),
+                                   device.IsKhrShaderFloatControlsSupported(),  // false on Stock, true on Turnip
         .force_fp32_denorm_preserve = false,  // FTZ dominates
         .force_fp32_rte_rounding = driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY && 
-                                   device.IsKhrShaderFloatControlsSupported(),
+                                   device.IsKhrShaderFloatControlsSupported(),  // false on Stock, true on Turnip
         .force_fp32_signed_zero_inf_nan = driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY && 
-                                          device.IsKhrShaderFloatControlsSupported(),
+                                          device.IsKhrShaderFloatControlsSupported(),  // false on Stock, true on Turnip
         
         .support_explicit_workgroup_layout = device.IsKhrWorkgroupMemoryExplicitLayoutSupported(),
         .support_vote = device.IsSubgroupFeatureSupported(VK_SUBGROUP_FEATURE_VOTE_BIT),
@@ -381,7 +382,8 @@ PipelineCache::PipelineCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
         .has_broken_spirv_position_input = driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY,
         .has_broken_unsigned_image_offsets = false,
         .has_broken_signed_operations = false,
-        .has_broken_fp16_float_controls = driver_id == VK_DRIVER_ID_NVIDIA_PROPRIETARY,
+        .has_broken_fp16_float_controls = driver_id == VK_DRIVER_ID_NVIDIA_PROPRIETARY ||
+                                          driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY,
         .ignore_nan_fp_comparisons = false,
         .has_broken_spirv_subgroup_mask_vector_extract_dynamic =
             driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY,

src/video_core/vulkan_common/vulkan_device.cpp

@@ -551,23 +551,13 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
             LOG_INFO(Render_Vulkan, "VK_QCOM_render_pass_shader_resolve: ENABLED");
         }
 
-        // Shader Float Controls for Qualcomm Adreno
-        LOG_INFO(Render_Vulkan, "Enabling Shader Float Controls with Switch/Maxwell native configuration");
-        
-        // Log driver capabilities
-        const auto& fc = properties.float_controls;
-        LOG_INFO(Render_Vulkan, "Driver Capabilities:");
-        LOG_INFO(Render_Vulkan, "  - Denorm Flush FP32: {}", fc.shaderDenormFlushToZeroFloat32 ? "YES" : "NO");
-        LOG_INFO(Render_Vulkan, "  - RTE Rounding FP32: {}", fc.shaderRoundingModeRTEFloat32 ? "YES" : "NO");
-        LOG_INFO(Render_Vulkan, "  - Signed Zero/Inf/Nan FP32: {}", fc.shaderSignedZeroInfNanPreserveFloat32 ? "YES" : "NO");
-        
-        // Apply Switch/Maxwell native float behavior
-        LOG_INFO(Render_Vulkan, "Applying Switch/Maxwell native float behavior:");
-        LOG_INFO(Render_Vulkan, "  - FTZ (Flush-To-Zero): ON - Matches Switch hardware behavior");
-        LOG_INFO(Render_Vulkan, "  - RTE (Round-To-Even): ON - IEEE 754 standard precision");
-        LOG_INFO(Render_Vulkan, "  - SignedZero/Inf/NaN: ON - Mathematical correctness");
-        
-        LOG_INFO(Render_Vulkan, "VK_KHR_shader_float_controls: ENABLED (auto-configured)");
+        // Shader Float Controls: Keep extension ENABLED for FP32 precision control
+        // Stock Qualcomm: Disable FP16 support (broken hardware), force FP32 fallback
+        // Turnip Mesa: Full float controls support
+        if (!is_turnip) {
+            LOG_WARNING(Render_Vulkan, "Disabling FP16 support for Stock Qualcomm (broken driver)");
+            features.shader_float16_int8.shaderFloat16 = false;
+        }
         
         // Int64 atomics - genuinely broken, always disable
         RemoveExtensionFeature(extensions.shader_atomic_int64, features.shader_atomic_int64,