libvlkn: inital commit, basic prototype api in placeHEADmain

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>

1 files changed, 38 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..5b3b87d
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,38 @@
+#include "utils.h"
+#include "renderer.h"
+
+VkCommandBuffer begin_single_command(struct vlkn_renderer *ren) {
+	VkCommandBufferAllocateInfo alloc_info = {
+		.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
+		.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
+		.commandPool = ren->command.pool,
+		.commandBufferCount = 1
+	};
+
+	VkCommandBuffer buffer;
+	vkAllocateCommandBuffers(ren->gpu.device, &alloc_info, &buffer);
+
+	VkCommandBufferBeginInfo begin_info = {
+		.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+		.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
+	};
+
+	vkBeginCommandBuffer(buffer, &begin_info);
+
+	return buffer;
+}
+
+void end_single_command(struct vlkn_renderer *ren, VkCommandBuffer buffer) {
+	vkEndCommandBuffer(buffer);
+
+	VkSubmitInfo submit_info = {
+		.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+		.commandBufferCount = 1,
+		.pCommandBuffers = &buffer
+	};
+
+	vkQueueSubmit(ren->gpu.gfx_queue, 1, &submit_info, VK_NULL_HANDLE);
+	vkQueueWaitIdle(ren->gpu.gfx_queue);
+
+	vkFreeCommandBuffers(ren->gpu.device, ren->command.pool, 1, &buffer);
+}