Initial implementation of Vulkan backend

[libs/gl.git] / source / backends / vulkan / module_backend.cpp

diff --git a/source/backends/vulkan/module_backend.cpp b/source/backends/vulkan/module_backend.cpp
new file mode 100644 (file)
index 0000000..759497a
--- /dev/null
+++ b/source/backends/vulkan/module_backend.cpp
@@ -0,0 +1,57 @@
+#include <stdexcept>
+#include "device.h"
+#include "module.h"
+#include "module_backend.h"
+#include "vulkan.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GL {
+
+VulkanSpirVModule::VulkanSpirVModule():
+       device(Device::get_current())
+{ }
+
+VulkanSpirVModule::VulkanSpirVModule(VulkanSpirVModule &&other):
+       device(other.device),
+       handle(other.handle)
+{
+       other.handle = 0;
+}
+
+VulkanSpirVModule::~VulkanSpirVModule()
+{
+       const VulkanFunctions &vk = device.get_functions();
+
+       if(handle)
+               vk.DestroyShaderModule(handle);
+}
+
+void VulkanSpirVModule::create()
+{
+       const vector<uint32_t> &code = static_cast<const SpirVModule *>(this)->code;
+       const VulkanFunctions &vk = device.get_functions();
+
+       VkShaderModuleCreateInfo module_info = { };
+       module_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+       module_info.codeSize = code.size()*4;
+       module_info.pCode = code.data();
+
+       vk.CreateShaderModule(module_info, handle);
+}
+
+
+unsigned get_vulkan_stage(unsigned stage)
+{
+       switch(stage)
+       {
+       case SpirVModule::VERTEX: return VK_SHADER_STAGE_VERTEX_BIT;
+       case SpirVModule::GEOMETRY: return VK_SHADER_STAGE_GEOMETRY_BIT;
+       case SpirVModule::FRAGMENT: return VK_SHADER_STAGE_FRAGMENT_BIT;
+       default: throw invalid_argument("get_vulkan_stage");
+       }
+}
+
+} // namespace GL
+} // namespace Msp