Implement vkMapMemory, vkUnmapMemory, vkBindBufferMemory, vkGetBufferMemoryRequirements, vkDestroyBuffer and vkDestroyImage

libportability-gfx/src/handle.rs

@@ -1,3 +1,4 @@
+use VK_NULL_HANDLE;
 use std::{fmt, ops};
 
 
@@ -13,6 +14,10 @@ impl<T> Handle<T> {
     pub fn unwrap(self) -> Box<T> {
         unsafe { Box::from_raw(self.0) }
     }
+
+    pub fn is_null(&self) -> bool {
+        self.0 == VK_NULL_HANDLE as *mut T
+    }
 }
 
 impl<T> Clone for Handle<T> {

libportability-gfx/src/impls.rs

@@ -295,14 +295,31 @@ pub extern fn gfxFreeMemory(
 ) {
     gpu.device.free_memory(*memory.unwrap());
 }
-extern "C" {
-    pub fn vkMapMemory(device: VkDevice, memory: VkDeviceMemory,
-                       offset: VkDeviceSize, size: VkDeviceSize,
-                       flags: VkMemoryMapFlags,
-                       ppData: *mut *mut ::std::os::raw::c_void) -> VkResult;
+#[inline]
+pub extern fn gfxMapMemory(
+    gpu: VkDevice,
+    memory: VkDeviceMemory,
+    offset: VkDeviceSize,
+    size: VkDeviceSize,
+    _flags: VkMemoryMapFlags,
+    ppData: *mut *mut ::std::os::raw::c_void,
+) -> VkResult {
+    if size == VK_WHOLE_SIZE as VkDeviceSize {
+        unimplemented!()
     }
-extern "C" {
-    pub fn vkUnmapMemory(device: VkDevice, memory: VkDeviceMemory);
+
+    unsafe {
+        *ppData = gpu
+            .device
+            .map_memory(&memory, offset..offset+size)
+            .unwrap() as *mut _; // TODO
+    }
+
+    VkResult::VK_SUCCESS
+}
+#[inline]
+pub extern fn gfxUnmapMemory(gpu: VkDevice, memory: VkDeviceMemory) {
+    gpu.device.unmap_memory(&memory);
 }
 extern "C" {
     pub fn vkFlushMappedMemoryRanges(device: VkDevice, memoryRangeCount: u32,
@@ -323,10 +340,28 @@ extern "C" {
                                        pCommittedMemoryInBytes:
                                            *mut VkDeviceSize);
 }
-extern "C" {
-    pub fn vkBindBufferMemory(device: VkDevice, buffer: VkBuffer,
+#[inline]
+pub extern fn gfxBindBufferMemory(
+    gpu: VkDevice,
+    mut buffer: VkBuffer,
     memory: VkDeviceMemory,
-                              memoryOffset: VkDeviceSize) -> VkResult;
+    memoryOffset: VkDeviceSize,
+) -> VkResult {
+    let new_buffer = match *buffer.unwrap() {
+        Buffer::Buffer(_) => panic!("An Buffer can only be bound once!"),
+        Buffer::Unbound(unbound) => {
+            gpu.device.bind_buffer_memory(
+                &memory,
+                memoryOffset,
+                unbound,
+            ).unwrap() // TODO
+        }
+    };
+
+    // Replace the unbound buffer with an actual buffer under the hood.
+    *buffer = Buffer::Buffer(new_buffer);
+
+    VkResult::VK_SUCCESS
 }
 #[inline]
 pub extern fn gfxBindImageMemory(
@@ -351,10 +386,23 @@ pub extern fn gfxBindImageMemory(
 
     VkResult::VK_SUCCESS
 }
-extern "C" {
-    pub fn vkGetBufferMemoryRequirements(device: VkDevice, buffer: VkBuffer,
-                                         pMemoryRequirements:
-                                             *mut VkMemoryRequirements);
+#[inline]
+pub extern fn gfxGetBufferMemoryRequirements(
+    gpu: VkDevice,
+    buffer: VkBuffer,
+    pMemoryRequirements: *mut VkMemoryRequirements,
+) {
+    let req = match *buffer.deref() {
+        Buffer::Buffer(ref buffer) => unimplemented!(),
+        Buffer::Unbound(ref buffer) => {
+            gpu.device.get_buffer_requirements(buffer)
+        }
+    };
+
+    let memory_requirements = unsafe { &mut *pMemoryRequirements };
+    memory_requirements.size = req.size;
+    memory_requirements.alignment = req.alignment;
+    memory_requirements.memoryTypeBits = req.type_mask as _;
 }
 #[inline]
 pub extern fn gfxGetImageMemoryRequirements(
@@ -479,9 +527,18 @@ extern "C" {
                           pAllocator: *const VkAllocationCallbacks,
                           pBuffer: *mut VkBuffer) -> VkResult;
 }
-extern "C" {
-    pub fn vkDestroyBuffer(device: VkDevice, buffer: VkBuffer,
-                           pAllocator: *const VkAllocationCallbacks);
+#[inline]
+pub extern fn gfxDestroyBuffer(
+    gpu: VkDevice,
+    buffer: VkBuffer,
+    pAllocator: *const VkAllocationCallbacks,
+) {
+    if !buffer.is_null() {
+        match *buffer.unwrap() {
+            Buffer::Buffer(buffer) => gpu.device.destroy_buffer(buffer),
+            Buffer::Unbound(_) => unimplemented!(),
+        }
+    }
 }
 extern "C" {
     pub fn vkCreateBufferView(device: VkDevice,
@@ -515,9 +572,18 @@ pub extern fn gfxCreateImage(
     unsafe { *pImage = Handle::new(Image::Unbound(image)); }
     VkResult::VK_SUCCESS
 }
-extern "C" {
-    pub fn vkDestroyImage(device: VkDevice, image: VkImage,
-                          pAllocator: *const VkAllocationCallbacks);
+#[inline]
+pub extern fn gfxDestroyImage(
+    gpu: VkDevice,
+    image: VkImage,
+    pAllocator: *const VkAllocationCallbacks,
+) {
+    if !image.is_null() {
+        match *image.unwrap() {
+            Image::Image(image) => gpu.device.destroy_image(image),
+            Image::Unbound(_) => unimplemented!(),
+        }
+    }
 }
 extern "C" {
     pub fn vkGetImageSubresourceLayout(device: VkDevice, image: VkImage,

libportability-gfx/src/lib.rs

@@ -39,6 +39,13 @@ pub enum Image<B: hal::Backend> {
 pub type VkImage = Handle<Image<B>>;
 pub type VkImageView = Handle<<B as hal::Backend>::ImageView>;
 
+pub enum Buffer<B: hal::Backend> {
+    Buffer(B::Buffer),
+    Unbound(B::UnboundBuffer),
+}
+
+pub type VkBuffer = Handle<Buffer<B>>;
+
 //NOTE: all *KHR types have to be pure `Handle` things for compatibility with
 //`VK_DEFINE_NON_DISPATCHABLE_HANDLE` used in `vulkan.h`
 pub type VkSurfaceKHR = Handle<<B as hal::Backend>::Surface>;
@@ -514,13 +521,6 @@ pub struct VkFence_T {
     _unused: [u8; 0],
 }
 pub type VkFence = *mut VkFence_T;
-#[repr(C)]
-#[derive(Debug, Copy, Clone)]
-pub struct VkBuffer_T {
-    _unused: [u8; 0],
-}
-pub type VkBuffer = *mut VkBuffer_T;
-
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct VkEvent_T {

libportability/src/lib.rs

@@ -81,6 +81,15 @@ pub extern fn vkBindImageMemory(
     gfxBindImageMemory(device, image, memory, memoryOffset)
 }
 #[no_mangle]
+pub extern fn vkBindBufferMemory(
+    device: VkDevice,
+    buffer: VkBuffer,
+    memory: VkDeviceMemory,
+    memoryOffset: VkDeviceSize,
+) -> VkResult {
+    gfxBindBufferMemory(device, buffer, memory, memoryOffset)
+}
+#[no_mangle]
 pub extern fn vkDestroyDevice(
     device: VkDevice,
     pAllocator: *const VkAllocationCallbacks,
@@ -261,3 +270,54 @@ pub extern fn vkCreateWin32SurfaceKHR(
 ) -> VkResult {
     gfxCreateWin32SurfaceKHR(instance, pCreateInfos, pAllocator, pSurface)
 }
+
+#[no_mangle]
+pub extern fn vkMapMemory(
+    device: VkDevice,
+    memory: VkDeviceMemory,
+    offset: VkDeviceSize,
+    size: VkDeviceSize,
+    flags: VkMemoryMapFlags,
+    ppData: *mut *mut ::std::os::raw::c_void,
+) -> VkResult {
+    gfxMapMemory(
+        device,
+        memory,
+        offset,
+        size,
+        flags,
+        ppData,
+    )
+}
+
+#[no_mangle]
+pub extern fn vkUnmapMemory(device: VkDevice, memory: VkDeviceMemory) {
+    gfxUnmapMemory(device, memory)
+}
+
+#[no_mangle]
+pub extern fn vkDestroyImage(
+    device: VkDevice,
+    image: VkImage,
+    pAllocator: *const VkAllocationCallbacks,
+) {
+    gfxDestroyImage(device, image, pAllocator)
+}
+
+#[no_mangle]
+pub extern fn vkDestroyBuffer(
+    device: VkDevice,
+    buffer: VkBuffer,
+    pAllocator: *const VkAllocationCallbacks,
+) {
+    gfxDestroyBuffer(device, buffer, pAllocator)
+}
+
+#[no_mangle]
+pub extern fn vkGetBufferMemoryRequirements(
+    device: VkDevice,
+    buffer: VkBuffer,
+    pMemoryRequirements: *mut VkMemoryRequirements,
+) {
+    gfxGetBufferMemoryRequirements(device, buffer, pMemoryRequirements)
+}

native/test.cpp

@@ -342,6 +342,56 @@ int main() {
 
     auto mvp = clip * projection * view * model;
 
+    VkBuffer uniform_buf = 0;
+
+    VkBufferCreateInfo buf_info = {};
+    buf_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    buf_info.pNext = NULL;
+    buf_info.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+    buf_info.size = sizeof(mvp);
+    buf_info.queueFamilyIndexCount = 0;
+    buf_info.pQueueFamilyIndices = NULL;
+    buf_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+    buf_info.flags = 0;
+    res = vkCreateBuffer(device, &buf_info, NULL, &uniform_buf);
+    printf("\tvkCreateBuffer: res=%d\n", res);
+    assert(!res);
+
+    VkMemoryRequirements mem_reqs_uniform;
+    vkGetBufferMemoryRequirements(device, uniform_buf, &mem_reqs_uniform);
+
+    VkMemoryAllocateInfo alloc_info = {};
+    alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+    alloc_info.pNext = NULL;
+    alloc_info.memoryTypeIndex = 0;
+
+    alloc_info.allocationSize = mem_reqs_uniform.size;
+    pass = memory_type_from_properties(
+        memory_properties,
+        mem_reqs_uniform.memoryTypeBits,
+        VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
+        &alloc_info.memoryTypeIndex);
+    assert(pass && "No mappable, coherent memory");
+
+    VkDeviceMemory uniform_mem = 0;
+    res = vkAllocateMemory(device, &alloc_info, NULL, &uniform_mem);
+    printf("\tvkAllocateMemory: res=%d\n", res);
+    assert(!res);
+
+    uint8_t *pData;
+    res = vkMapMemory(device, uniform_mem, 0, mem_reqs_uniform.size, 0, (void **)&pData);
+    printf("\tvkMapMemory: res=%d\n", res);
+    assert(!res);
+
+    memcpy(pData, &mvp, sizeof(mvp));
+
+    vkUnmapMemory(device, uniform_mem);
+    printf("\tvkUnmapMemory");
+
+    res = vkBindBufferMemory(device, uniform_buf, uniform_mem, 0);
+    printf("\tvkBindBufferMemory: res=%d\n", res);
+    assert(!res);
+
     VkCommandPool cmd_pool = 0;
     VkCommandPoolCreateInfo cmd_pool_info = {};
     cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
@@ -370,12 +420,17 @@ int main() {
 
     }
 
-    // TODO: destroy depth image
-
-    vkFreeMemory(device, depth_memory, NULL);
+    vkDestroyBuffer(device, uniform_buf, NULL);
+    printf("\tvkDestroyBuffer\n");
+    vkFreeMemory(device, uniform_mem, NULL);
     printf("\tvkFreeMemory\n");
+
     vkDestroyImageView(device, depth_view, NULL);
     printf("\tvkDestroyImageView\n");
+    vkDestroyImage(device, depth_image, NULL);
+    printf("\tvkDestroyImage\n");
+    vkFreeMemory(device, depth_memory, NULL);
+    printf("\tvkFreeMemory\n");
 
     for(auto view : swapchain_views) {
         vkDestroyImageView(device, view, NULL);