增亮

app/src/main/cpp/vulkan_hdr_generator.cpp

@@ -495,6 +495,28 @@ void VulkanHdrGenerator::processImageBatch(
     vkUnmapMemory(device, outputBufferMemory);
 }
 
+// Add this function to VulkanHdrGenerator.cpp, just before the generateHdr method
+void boostBrightness(std::vector<float>& imageData, float boost = 10.0f) {
+    if (imageData.empty()) return;
+
+    // Find current average brightness
+    float totalLum = 0.0f;
+    for (size_t i = 0; i < imageData.size(); i += 3) {
+        float r = imageData[i];
+        float g = imageData[i+1];
+        float b = imageData[i+2];
+        float lum = 0.2126f * r + 0.7152f * g + 0.0722f * b;
+        totalLum += lum;
+    }
+    float avgLum = totalLum / (imageData.size() / 3);
+    ALOGI("Original average luminance: %.4f", avgLum);
+
+    // Simple linear scaling without tone mapping
+    for (size_t i = 0; i < imageData.size(); ++i) {
+        imageData[i] *= boost;
+    }
+}
+
 bool VulkanHdrGenerator::generateHdr(
         const std::vector<std::string>& bmpFiles,
         const std::string& outputFile,
@@ -567,8 +589,16 @@ bool VulkanHdrGenerator::generateHdr(
 
     }
 
+    // After all tiles are processed and before writing:
+    ALOGI("Applying brightness boost to final HDR image");
+    boostBrightness(outputHdrData, 30.0f);  // Try a large value like 10.0
+
     // Write output HDR
-    return HdrWriter::writeRGB(outputFile, outputHdrData, (int)imageWidth, (int)imageHeight, HdrWriter::Format::BMP);
+    bool res = HdrWriter::writeRGB(outputFile, outputHdrData, (int)imageWidth, (int)imageHeight, HdrWriter::Format::BMP);
+
+    ALOGI("BMP saved");
+
+    return res;
 }
 
 uint32_t VulkanHdrGenerator::findComputeQueueFamily(VkPhysicalDevice device) {