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device wide staging buffer

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This commit is contained in:
Gregory Wells
2025-07-09 16:21:00 -04:00
parent f6f856c1ec
commit 6ecaad4d7a
4 changed files with 44 additions and 44 deletions
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72
projects/apis/vulkan/src/buffers/vulkan_buffer.c
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@@ -3,7 +3,11 @@
#include "output_device/gryphn_output_device.h"
#include "output_device/vulkan_output_devices.h"
#include "output_device/vulkan_physical_device.h"
#include "commands/command_buffer/vulkan_command_buffer.h"
VkDeviceSize min(VkDeviceSize a, VkDeviceSize b) {
if (a >= b) return a;
return b;
}
VkBufferUsageFlags vkGryphnBufferType(gnBufferType type) {
VkBufferUsageFlags usageFlags = 0;
@@ -58,28 +62,17 @@ gnReturnCode VkCreateBuffer(
return GN_SUCCESS;
}
void VkCopyBuffer(VkBuffer source, VkBuffer destination, size_t size, VkCommandPool pool, VkDevice device, VkQueue queue) {
VkCommandBuffer transferBuffer = VkBeginTransferOperation(device, pool);
VkBufferCopy copyRegion = {
.size = size
};
vkCmdCopyBuffer(transferBuffer, source, destination, 1, &copyRegion);
VkEndTransferOperation(transferBuffer, pool, queue, device);
void VkCopyBuffer(gnDevice device, VkBuffer source, VkBuffer destination, VkBufferCopy copy) {
VkCommandBuffer transferBuffer = gnBeginVulkanTransferOperation(device);
vkCmdCopyBuffer(transferBuffer, source, destination, 1, &copy);
gnEndVulkanTransferOperation(device, transferBuffer);
}
gnReturnCode createBuffer(gnBufferHandle buffer, gnOutputDeviceHandle device, gnBufferInfo info) {
buffer->buffer = malloc(sizeof(struct gnPlatformBuffer_t));
VkBufferUsageFlags usage = vkGryphnBufferType(info.type);
buffer->buffer->useStagingBuffer = gnFalse;
buffer->buffer->useStagingBuffer = (info.usage == GN_STATIC_DRAW);
if (info.usage == GN_STATIC_DRAW) {
buffer->buffer->useStagingBuffer = gnTrue;
VkCreateBuffer(
&buffer->buffer->stagingBuffer,
info.size, device,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
VK_BUFFER_USAGE_TRANSFER_SRC_BIT
);
return VkCreateBuffer(
&buffer->buffer->buffer,
info.size, device,
@@ -99,32 +92,31 @@ gnReturnCode createBuffer(gnBufferHandle buffer, gnOutputDeviceHandle device, gn
return GN_SUCCESS;
}
void bufferData(gnBufferHandle buffer, size_t dataSize, void* data) {
void* bufferData;
if (buffer->buffer->useStagingBuffer) {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBuffer.memory, 0, dataSize, 0, &bufferData);
memcpy(bufferData, data, dataSize);
vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBuffer.memory);
VkCopyBuffer(
buffer->buffer->stagingBuffer.buffer, buffer->buffer->buffer.buffer, dataSize,
buffer->device->outputDevice->transferCommandPool, buffer->device->outputDevice->device,
buffer->device->outputDevice->transferQueue);
} else {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->buffer.memory, 0, dataSize, 0, &bufferData);
memcpy(bufferData, data, dataSize);
vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->buffer.memory);
}
void bufferData(gnBufferHandle buffer, VkDeviceSize dataSize, void* data) {
vulkanBufferSubData(buffer, 0, dataSize, data);
}
void vulkanBufferSubData(gnBufferHandle buffer, size_t offset, size_t dataSize, void* data) {
void* bufferData;
if (buffer->buffer->useStagingBuffer) {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBuffer.memory, 0, dataSize, 0, &bufferData);
memcpy(bufferData + offset, data, dataSize);
vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBuffer.memory);
VkCopyBuffer(
buffer->buffer->stagingBuffer.buffer, buffer->buffer->buffer.buffer, dataSize,
buffer->device->outputDevice->transferCommandPool, buffer->device->outputDevice->device,
buffer->device->outputDevice->transferQueue);
VkGryphnBuffer* stagingBuffer = &buffer->device->outputDevice->stagingBuffer;
VkDeviceSize sizeLeft = dataSize;
int copies = 0;
while (sizeLeft > 0) {
VkDeviceSize chunkSize = (buffer->device->outputDevice->stagingBufferSize < sizeLeft) ? buffer->device->outputDevice->stagingBufferSize : sizeLeft;
vkMapMemory(buffer->device->outputDevice->device, stagingBuffer->memory, 0, dataSize, 0, &bufferData);
memcpy(bufferData, data + (dataSize - sizeLeft), chunkSize);
vkUnmapMemory(buffer->device->outputDevice->device, stagingBuffer->memory);
VkBufferCopy copyRegion = {
.srcOffset = 0,
.dstOffset = offset + (dataSize - sizeLeft),
.size = chunkSize
};
VkCopyBuffer(buffer->device, stagingBuffer->buffer, buffer->buffer->buffer.buffer, copyRegion);
sizeLeft -= chunkSize;
copies++;
}
} else {
vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->buffer.memory, 0, dataSize, 0, &bufferData);
memcpy(bufferData + offset, data, dataSize);
@@ -143,7 +135,7 @@ void gnDestroyVulkanBuffer(VkGryphnBuffer* buffer, VkDevice device) {
}
void destroyBuffer(gnBufferHandle buffer) {
if (buffer->buffer->useStagingBuffer == gnTrue) gnDestroyVulkanBuffer(&buffer->buffer->stagingBuffer, buffer->device->outputDevice->device);
// if (buffer->buffer->useStagingBuffer == gnTrue) gnDestroyVulkanBuffer(&buffer->buffer->stagingBuffer, buffer->device->outputDevice->device);
gnDestroyVulkanBuffer(&buffer->buffer->buffer, buffer->device->outputDevice->device);
free(buffer->buffer);
}