[wsi] Add GLFW backend

include/native/wsi/native_glfw.h

@@ -0,0 +1,25 @@
+#include <windows.h>
+
+#include <GLFW/glfw3.h>
+
+namespace dxvk::wsi {
+
+  inline GLFWwindow* fromHwnd(HWND hWindow) {
+    return reinterpret_cast<GLFWwindow*>(hWindow);
+  }
+
+  inline HWND toHwnd(GLFWwindow* pWindow) {
+    return reinterpret_cast<HWND>(pWindow);
+  }
+
+  // Offset so null HMONITORs go to -1
+  inline int32_t fromHmonitor(HMONITOR hMonitor) {
+    return static_cast<int32_t>(reinterpret_cast<intptr_t>(hMonitor)) - 1;
+  }
+
+  // Offset so -1 display id goes to 0 == NULL
+  inline HMONITOR toHmonitor(int32_t displayId) {
+    return reinterpret_cast<HMONITOR>(static_cast<intptr_t>(displayId + 1));
+  }
+
+}

include/native/wsi/native_wsi.h

@@ -4,6 +4,8 @@
 #error You shouldnt be using this code path.
 #elif DXVK_WSI_SDL2
 #include "wsi/native_sdl2.h"
+#elif DXVK_WSI_GLFW
+#include "wsi/native_glfw.h"
 #else
 #error Unknown wsi!
 #endif

meson.build

@@ -103,8 +103,6 @@ if platform == 'windows'
   dxvk_name_prefix = ''
   compiler_args += ['-DDXVK_WSI_WIN32']
 else
-  lib_sdl2   = cpp.find_library('SDL2')
-
   wrc           = find_program('touch')
   wrc_generator = generator(wrc, output : [ '@BASENAME@_ignored.h' ], arguments : [ '@OUTPUT@' ] )
 
@@ -114,9 +112,17 @@ else
     './include/native/directx'
   ]
 
-  dxvk_wsi = 'sdl2'
+  dxvk_wsi = get_option('dxvk_native_wsi')
+
+  if dxvk_wsi == 'sdl2'
+    lib_sdl2 = cpp.find_library('SDL2')
+    compiler_args += ['-DDXVK_WSI_SDL2']
+  elif dxvk_wsi == 'glfw'
+    lib_glfw = cpp.find_library('glfw')
+    compiler_args += ['-DDXVK_WSI_GLFW']
+  endif
+
   dxvk_name_prefix = 'libdxvk_'
-  compiler_args += ['-DDXVK_WSI_SDL2']
 
   link_args += [
     '-static-libgcc',

meson_options.txt

@@ -3,3 +3,5 @@ option('enable_d3d9',  type : 'boolean', value : true, description: 'Build D3D9'
 option('enable_d3d10', type : 'boolean', value : true, description: 'Build D3D10')
 option('enable_d3d11', type : 'boolean', value : true, description: 'Build D3D11')
 option('build_id',     type : 'boolean', value : false)
+
+option('dxvk_native_wsi',   type : 'string',  value : 'sdl2', description: 'WSI system to use if building natively.')

src/dxvk/meson.build

@@ -127,6 +127,10 @@ elif dxvk_wsi == 'sdl2'
   dxvk_src += [
     'platform/dxvk_sdl2_exts.cpp'
   ]
+elif dxvk_wsi == 'glfw'
+  dxvk_src += [
+    'platform/dxvk_glfw_exts.cpp'
+  ]
 endif
 
 dxvk_extra_deps = [ dependency('threads') ]

src/dxvk/platform/dxvk_glfw_exts.cpp

@@ -0,0 +1,49 @@
+#include "../dxvk_platform_exts.h"
+
+#include "../../vulkan/vulkan_loader.h"
+#include <GLFW/glfw3.h>
+
+namespace dxvk {
+
+  DxvkPlatformExts DxvkPlatformExts::s_instance;
+
+  std::string_view DxvkPlatformExts::getName() {
+    return "GLFW WSI";
+  }
+
+  DxvkNameSet DxvkPlatformExts::getInstanceExtensions() {
+    if (!glfwVulkanSupported()) 
+      throw DxvkError(str::format("GLFW WSI: Vulkan is not supported in any capacity!"));
+
+    uint32_t extensionCount = 0;
+    const char** extensionArray = glfwGetRequiredInstanceExtensions(&extensionCount);
+
+    if (extensionCount == 0)
+      throw DxvkError(str::format("GLFW WSI: Failed to get required instance extensions"));
+
+    DxvkNameSet names;
+    for (uint32_t i = 0; i < extensionCount; ++i) { 
+      names.add(extensionArray[i]);
+    }
+
+    return names;
+  }
+
+
+  DxvkNameSet DxvkPlatformExts::getDeviceExtensions(
+          uint32_t      adapterId) {
+    return DxvkNameSet();
+  }
+
+
+  void DxvkPlatformExts::initInstanceExtensions() {
+    //Nothing needs to be done here on GLFW
+  }
+
+
+  void DxvkPlatformExts::initDeviceExtensions(
+    const DxvkInstance* instance) {
+    //Nothing needs to be done here on GLFW
+  }
+
+}

src/wsi/glfw/wsi_monitor_glfw.cpp

@@ -0,0 +1,163 @@
+#include "../wsi_monitor.h"
+
+#include "wsi/native_wsi.h"
+#include "wsi_platform_glfw.h"
+
+#include "../../util/util_string.h"
+#include "../../util/log/log.h"
+
+#include <string>
+#include <sstream>
+
+namespace dxvk::wsi {
+
+  HMONITOR getDefaultMonitor() {
+    return enumMonitors(0);
+  }
+
+
+  HMONITOR enumMonitors(uint32_t index) {
+    return isDisplayValid(int32_t(index))
+         ? toHmonitor(index)
+         : nullptr;
+  }
+
+  bool getDisplayName(
+      HMONITOR hMonitor,
+      WCHAR            (&Name)[32]) {
+    const int32_t displayId = fromHmonitor(hMonitor);
+
+    if (!isDisplayValid(displayId))
+      return false;
+
+    std::wstringstream nameStream;
+    nameStream << LR"(\\.\DISPLAY)" << (displayId + 1);
+
+    std::wstring name = nameStream.str();
+
+    std::memset(Name, 0, sizeof(Name));
+    name.copy(Name, name.length(), 0);
+
+    return true;
+  }
+
+
+  bool getDesktopCoordinates(
+      HMONITOR hMonitor,
+      RECT* pRect) {
+    const int32_t displayId = fromHmonitor(hMonitor);
+
+    if (!isDisplayValid(displayId))
+      return false;
+
+    int32_t displayCount = 0;
+    GLFWmonitor** monitors = glfwGetMonitors(&displayCount);
+    GLFWmonitor* monitor = monitors[displayId];
+
+    int32_t x;
+    int32_t y;
+    int32_t w;
+    int32_t h;
+    glfwGetMonitorWorkarea(monitor, &x, &y, &w, &h);
+
+    pRect->left = x;
+    pRect->top = y;
+    pRect->right = x + w;
+    pRect->bottom = y + h;
+
+    return true;
+  }
+
+  static inline uint32_t roundToNextPow2(uint32_t num) {
+    if (num-- == 0)
+      return 0;
+
+    num |= num >> 1;
+    num |= num >> 2;
+    num |= num >> 4;
+    num |= num >> 8;
+    num |= num >> 16;
+
+    return ++num;
+  }
+
+
+  static inline void convertMode(const GLFWvidmode& mode, WsiMode* pMode) {
+    pMode->width = uint32_t(mode.width);
+    pMode->height = uint32_t(mode.height);
+    pMode->refreshRate = WsiRational{uint32_t(mode.refreshRate) * 1000, 1000};
+    // BPP should always be a power of two
+    // to match Windows behaviour of including padding.
+    pMode->bitsPerPixel = roundToNextPow2(mode.blueBits + mode.redBits + mode.greenBits);
+    pMode->interlaced = false;
+  }
+
+
+  bool getDisplayMode(
+      HMONITOR hMonitor,
+      uint32_t ModeNumber,
+      WsiMode* pMode) {
+    const int32_t displayId = fromHmonitor(hMonitor);
+    int32_t displayCount = 0;
+    GLFWmonitor** monitors = glfwGetMonitors(&displayCount);
+    GLFWmonitor* monitor = monitors[displayId];
+
+    if (!isDisplayValid(displayId))
+      return false;
+
+    int32_t count = 0;
+    const GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
+
+    if(ModeNumber >= uint32_t(count))
+      return false;
+
+    convertMode(modes[ModeNumber], pMode);
+
+    return true;
+  }
+
+
+  bool getCurrentDisplayMode(
+      HMONITOR hMonitor,
+      WsiMode* pMode) {
+    const int32_t displayId = fromHmonitor(hMonitor);
+
+    if (!isDisplayValid(displayId))
+      return false;
+
+    int32_t displayCount = 0;
+    GLFWmonitor** monitors = glfwGetMonitors(&displayCount);
+    GLFWmonitor* monitor = monitors[displayId];
+
+    const GLFWvidmode* mode = glfwGetVideoMode(monitor);
+
+    convertMode(*mode, pMode);
+
+    return true;
+  }
+
+
+  bool getDesktopDisplayMode(
+      HMONITOR hMonitor,
+      WsiMode* pMode) {
+    const int32_t displayId = fromHmonitor(hMonitor);
+
+    if (!isDisplayValid(displayId))
+      return false;
+
+    int32_t displayCount = 0;
+    GLFWmonitor** monitors = glfwGetMonitors(&displayCount);
+    GLFWmonitor* monitor = monitors[displayId];
+
+    //TODO: actually implement this properly, currently we just grab the current one
+    convertMode(*glfwGetVideoMode(monitor), pMode);
+
+    return true;
+  }
+
+  std::vector<uint8_t> getMonitorEdid(HMONITOR hMonitor) {
+    Logger::err("getMonitorEdid not implemented on this platform.");
+    return {};
+  }
+
+}

src/wsi/glfw/wsi_platform_glfw.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "../../vulkan/vulkan_loader.h"
+#include <GLFW/glfw3.h>
+
+#include "../wsi_monitor.h"
+
+namespace dxvk::wsi {
+
+  /**
+    * \brief Impl-dependent state
+    */
+  struct DxvkWindowState {
+  };
+
+  inline bool isDisplayValid(int32_t displayId) {
+    int32_t displayCount = 0;
+    glfwGetMonitors(&displayCount);
+
+    return displayId < displayCount && displayId >= 0;
+  }
+
+}