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staging buffer for GN_STATIC_DRAW

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This commit is contained in:
Greg Wells
2025-06-06 13:57:58 -04:00
parent 5dba4361ca
commit f1a830a4b7
1 changed files with 59 additions and 12 deletions
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65
rendering_api/vulkan/src/buffers/vulkan_buffer.c
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@@ -13,12 +13,12 @@ case GN_VERTEX_BUFFER: return VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
gnReturnCode VkCreateBuffer(
VkBuffer* buffer, VkDeviceMemory* memory, gnBufferInfo info,
VkDevice device, VkPhysicalDevice physcialDevice,
VkMemoryPropertyFlags flags
VkMemoryPropertyFlags flags, VkBufferUsageFlags usage
) {
VkBufferCreateInfo bufferInfo = {
.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
.size = info.size,
.usage = vkGryphnBufferType(info.type),
.usage = usage,
.sharingMode = VK_SHARING_MODE_EXCLUSIVE
};
@@ -52,31 +52,78 @@ gnReturnCode VkCreateBuffer(
return GN_SUCCESS;
}
void VkCopyBuffer(VkBuffer source, VkBuffer destination, size_t size, VkCommandPool pool, VkDevice device, VkQueue queue) {
VkCommandBufferAllocateInfo allocInfo = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
.commandPool = pool,
.commandBufferCount = 1
};
VkCommandBuffer commandBuffer;
vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);
VkCommandBufferBeginInfo beginInfo = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
};
vkBeginCommandBuffer(commandBuffer, &beginInfo);
VkBufferCopy copyRegion = {
.size = size
};
vkCmdCopyBuffer(commandBuffer, source, destination, 1, &copyRegion);
vkEndCommandBuffer(commandBuffer);
VkSubmitInfo submitInfo = {
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.commandBufferCount = 1,
.pCommandBuffers = &commandBuffer
};
vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
vkQueueWaitIdle(queue);
}
gnReturnCode gnCreateBufferFn(gnBufferHandle buffer, gnOutputDeviceHandle device, gnBufferInfo info) {
buffer->buffer = malloc(sizeof(struct gnPlatformBuffer_t));
gnReturnCode createdBuffer = VkCreateBuffer(
&buffer->buffer->buffer, &buffer->buffer->bufferMemory,
info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
);
VkBufferUsageFlags usage = vkGryphnBufferType(info.type);
if (info.usage == GN_STATIC_DRAW) {
gnReturnCode createdBuffer = VkCreateBuffer(
&buffer->buffer->stagingBuffer, &buffer->buffer->stagingBufferMemory,
info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, VK_BUFFER_USAGE_TRANSFER_SRC_BIT
);
usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
buffer->buffer->useStagingBuffer = gnTrue;
}
gnReturnCode createdBuffer = VkCreateBuffer(
&buffer->buffer->buffer, &buffer->buffer->bufferMemory,
info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, usage
);
return GN_SUCCESS;
}
void gnBufferDataFn(gnBufferHandle buffer, size_t dataSize, void* data) {
void* bufferData;
if (buffer->buffer->useStagingBuffer) {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBufferMemory, 0, dataSize, 0, &bufferData);
memcpy(bufferData, data, dataSize);
vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBufferMemory);
VkCopyBuffer(
buffer->buffer->stagingBuffer, buffer->buffer->buffer, dataSize,
buffer->device->outputDevice->transferCommandPool, buffer->device->outputDevice->device,
buffer->device->outputDevice->transferQueue);
} else {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->bufferMemory, 0, dataSize, 0, &bufferData);
memcpy(bufferData, data, dataSize);
vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->bufferMemory);
}
}
void gnDestroyBufferFn(gnBufferHandle buffer) {
if (buffer->buffer->useStagingBuffer == gnTrue) {
vkDestroyBuffer(buffer->device->outputDevice->device, buffer->buffer->stagingBuffer, NULL);