commit eb2728bbe6efe03eae35e0452e35b04b38e75559
author Jon Ashburn <jon@lunarg.com> Fri Apr 10 14:33:07 2015 -0600
committer Chia-I Wu <olv@lunarg.com> Thu Apr 16 17:48:19 2015 +0800
tree 651a3fbde425ed32446039a69b32af2368cf2d27
parent f4f6959427a23514cc5070800b72f48074751672

vulkan: Add vkGetGlobalExtensionInfo entrypoint

have loader use it to enumerate all extensions from layers and drivers.
Non-gode_gen layers also updated to include vkGetGlobalExtensionInfo

Includes verion info as part of GetExtensionSupport return data.

TODO: vk-layer-generate needs work

v2: do not check for non-existing ENABLE_WSI_X11 (olv)

include/vulkan.h

diff --git a/include/vulkan.h b/include/vulkan.h
index bf581f2..0c85cb1 100644
--- a/include/vulkan.h
+++ b/include/vulkan.h
@@ -89,6 +89,7 @@
 
 #define VK_MAX_PHYSICAL_GPUS       16
 #define VK_MAX_PHYSICAL_GPU_NAME   256
+#define VK_MAX_EXTENSION_NAME      256
 
 #define VK_LOD_CLAMP_NONE       MAX_FLOAT
 #define VK_LAST_MIP_OR_SLICE    0xffffffff
@@ -670,6 +671,15 @@
     VK_MAX_ENUM(VkPhysicalGpuInfoType)
 } VkPhysicalGpuInfoType;
 
+typedef enum VkExtensionInfoType_
+{
+    // Info type for vkGetGlobalExtensionInfo() and vkGetPhysicalDeviceExtensionInfo()
+    VK_EXTENSION_INFO_TYPE_COUNT                            = 0x00000000,
+    VK_EXTENSION_INFO_TYPE_PROPERTIES                       = 0x00000001,
+
+    //VK_ENUM_RANGE(EXTENSION_INFO_TYPE, COUNT, PROPERTIES)
+} VkExtensionInfoType;
+
 typedef enum VkFormatInfoType_
 {
     // Info type for vkGetFormatInfo()
@@ -1369,6 +1379,12 @@
     VkFlags                                     compatibilityFlags; // VkGpuCompatibilityFlags
 } VkGpuCompatibilityInfo;
 
+typedef struct VkExtensionProperties_
+{
+    char                                        extName[VK_MAX_EXTENSION_NAME];     // extension name
+    uint32_t                                    version;                            // version of the extension specification
+} VkExtensionProperties;
+
 typedef struct VkApplicationInfo_
 {
     VkStructureType                             sType;              // Type of structure. Should be VK_STRUCTURE_TYPE_APPLICATION_INFO
@@ -2274,6 +2290,7 @@
 typedef void *   (VKAPI *PFN_vkGetProcAddr)(VkPhysicalGpu gpu, const char * pName);
 typedef VkResult (VKAPI *PFN_vkCreateDevice)(VkPhysicalGpu gpu, const VkDeviceCreateInfo* pCreateInfo, VkDevice* pDevice);
 typedef VkResult (VKAPI *PFN_vkDestroyDevice)(VkDevice device);
+typedef VkResult (VKAPI *PFN_vkGetGlobalExtensionInfo)(VkExtensionInfoType infoType, uint32_t extensionIndex, size_t* pDataSize, void* pData);
 typedef VkResult (VKAPI *PFN_vkGetExtensionSupport)(VkPhysicalGpu gpu, const char* pExtName);
 typedef VkResult (VKAPI *PFN_vkEnumerateLayers)(VkPhysicalGpu gpu, size_t maxLayerCount, size_t maxStringSize, size_t* pOutLayerCount, char* const* pOutLayers, void* pReserved);
 typedef VkResult (VKAPI *PFN_vkGetDeviceQueue)(VkDevice device, uint32_t queueNodeIndex, uint32_t queueIndex, VkQueue* pQueue);
@@ -2420,6 +2437,11 @@
     VkDevice                                    device);
 
 // Extension discovery functions
+VkResult VKAPI vkGetGlobalExtensionInfo(
+                                               VkExtensionInfoType infoType,
+                                               uint32_t extensionIndex,
+                                               size_t*  pDataSize,
+                                               void*    pData);
 
 VkResult VKAPI vkGetExtensionSupport(
     VkPhysicalGpu                               gpu,