add renderdoc api

src/main.cpp

@@ -12,12 +12,15 @@
 
 #include <shellscalingapi.h>
 #include <WbemCli.h>
-#include "wacom.h"
 #include <deque>
 #include <chrono>
+
+#include "wacom.h"
 #include "abr.h"
 #include "settings.h"
 
+#include <renderdoc_app.h>
+
 #include <iomanip>
 #include <ctime>
 #include <sstream>
@@ -51,6 +54,31 @@ float timer_ink_touch = 0;
 float timer_ink_pen = 0;
 bool sandboxed = false;
 
+RENDERDOC_API_1_4_0* rdoc_api = NULL;
+bool win32_renderdoc_init()
+{
+    // At init, on windows
+    if (HMODULE mod = GetModuleHandleA("renderdoc.dll"))
+    {
+        pRENDERDOC_GetAPI RENDERDOC_GetAPI =
+            (pRENDERDOC_GetAPI)GetProcAddress(mod, "RENDERDOC_GetAPI");
+        return RENDERDOC_GetAPI(eRENDERDOC_API_Version_1_1_2, (void**)&rdoc_api);
+    }
+    return false;
+}
+
+void win32_renderdoc_frame_start()
+{
+    if (rdoc_api)
+        rdoc_api->StartFrameCapture(NULL, NULL);
+}
+
+void win32_renderdoc_frame_end()
+{
+    if (rdoc_api)
+        rdoc_api->EndFrameCapture(NULL, NULL);
+}
+
 HRESULT(*GetDpiForMonitor_fn)(HMONITOR hmonitor, MONITOR_DPI_TYPE dpiType, UINT* dpiX, UINT* dpiY);
 HRESULT(*SetProcessDpiAwareness_fn)(PROCESS_DPI_AWARENESS value);
 void init_shcore_API()
@@ -925,6 +953,9 @@ int main(int argc, char** argv)
     LOG("GL vendor: %s", glGetString(GL_VENDOR));
     LOG("GL renderer: %s", glGetString(GL_RENDERER));
 
+    if (!win32_renderdoc_init())
+        LOG("Renderdoc not started");
+
     swprintf_s(window_title, L"PanoPainter %s (%s)", g_version_number_w, 
         str2wstr((char*)glGetString(GL_RENDERER)).c_str());