Fix compilation on Windows

There are still a bunch of warning that we should remove.

CMakeLists.txt

@@ -29,6 +29,13 @@ function(SetPIC Target)
     endif()
 endfunction()
 
+if (WIN32)
+    # Define NOMINMAX to prevent conflics between std::min/max and the min/max macros in WinDef.h
+    add_definitions(-DNOMINMAX)
+    # Remove compile error where the mock NXT creates too many sections for the old obj format.
+    add_compile_options("/bigobj")
+endif()
+
 add_subdirectory(third_party)
 add_subdirectory(generator)
 

generator/main.py

@@ -210,12 +210,12 @@ class PreprocessingLoader(jinja2.BaseLoader):
         for line in lines:
             # The capture in the regex adds one element per block start or end so we divide by two
             # there is also an extra line chunk corresponding to the line end, so we substract it.
-            numends = (len(self.blockend.split(line)) - 1) / 2
+            numends = (len(self.blockend.split(line)) - 1) // 2
             indentation_level -= numends
 
             result.append(self.remove_indentation(line, indentation_level))
 
-            numstarts = (len(self.blockstart.split(line)) - 1) / 2
+            numstarts = (len(self.blockstart.split(line)) - 1) // 2
             indentation_level += numstarts
 
         return '\n'.join(result)
@@ -456,6 +456,7 @@ def main():
             [os.path.abspath(args.json[0])] +
             [os.path.realpath(__file__)]
         )
+        dependencies = [dependency.replace('\\', '/') for dependency in dependencies]
         sys.stdout.write(output_separator.join(dependencies))
         return 0
 
@@ -463,6 +464,7 @@ def main():
         outputs = set(
             [os.path.abspath(args.output_dir + os.path.sep + render.output) for render in renders]
         )
+        outputs = [output.replace('\\', '/') for output in outputs]
         sys.stdout.write(output_separator.join(outputs))
         return 0
 

generator/templates/mock_api.h

@@ -18,6 +18,8 @@
 #include <gmock/gmock.h>
 #include <nxt/nxt.h>
 
+#include <memory>
+
 // An abstract base class representing a proc table so that API calls can be mocked. Most API calls
 // are directly represented by a delete virtual method but others need minimal state tracking to be
 // useful as mocks.

src/backend/common/CommandAllocator.cpp

@@ -16,6 +16,7 @@
 
 #include "Math.h"
 
+#include <algorithm>
 #include <cassert>
 #include <climits>
 #include <cstdlib>

src/backend/common/Math.cpp

@@ -14,23 +14,34 @@
 
 #include "Math.h"
 
+#include <intrin.h>
+
 #include "Forward.h"
 
 namespace backend {
 
-    unsigned long ScanForward(unsigned long bits) {
+    uint32_t ScanForward(uint32_t bits) {
         ASSERT(bits != 0);
-        // TODO(cwallez@chromium.org): handle non-posix platforms
-        // unsigned long firstBitIndex = 0ul;
-        // unsigned char ret = _BitScanForward(&firstBitIndex, bits);
-        // ASSERT(ret != 0);
-        // return firstBitIndex;
-        return static_cast<unsigned long>(__builtin_ctzl(bits));
+        #if defined(_WIN32) || defined(_WIN64)
+            unsigned long firstBitIndex = 0ul;
+            unsigned char ret = _BitScanForward(&firstBitIndex, bits);
+            ASSERT(ret != 0);
+            return firstBitIndex;
+        #else
+            return static_cast<unsigned long>(__builtin_ctz(bits));
+        #endif
     }
 
     uint32_t Log2(uint32_t value) {
         ASSERT(value != 0);
-        return 31 - __builtin_clz(value);
+        #if defined(_WIN32) || defined(_WIN64)
+            unsigned long firstBitIndex = 0ul;
+            unsigned char ret = _BitScanReverse(&firstBitIndex, value);
+            ASSERT(ret != 0);
+            return firstBitIndex;
+        #else
+            return 31 - __builtin_clz(value);
+        #endif
     }
 
     bool IsPowerOfTwo(size_t n) {

src/backend/common/Math.h

@@ -21,7 +21,7 @@
 namespace backend {
 
     // The following are not valid for 0
-    unsigned long ScanForward(unsigned long bits);
+    uint32_t ScanForward(uint32_t bits);
     uint32_t Log2(uint32_t value);
     bool IsPowerOfTwo(size_t n);