feat: add double support for vulkan backend

Author: hoffstadt

extensions/pl_graphics_ext.h

@@ -1323,7 +1323,9 @@ enum _plDeviceCapability
     PL_DEVICE_CAPABILITY_SWAPCHAIN           = 1 << 0,
     PL_DEVICE_CAPABILITY_BIND_GROUP_INDEXING = 1 << 1,
     PL_DEVICE_CAPABILITY_SAMPLER_ANISOTROPY  = 1 << 2,
-    PL_DEVICE_CAPABILITY_MULTIPLE_VIEWPORTS  = 1 << 3
+    PL_DEVICE_CAPABILITY_MULTIPLE_VIEWPORTS  = 1 << 3,    
+    PL_DEVICE_CAPABILITY_SHADER_FLOAT_64     = 1 << 4,
+    PL_DEVICE_CAPABILITY_SHADER_INT_64       = 1 << 5
 };
 
 enum _plCommandPoolResetFlags
@@ -1564,7 +1566,12 @@ enum _plVertexFormat
     PL_VERTEX_FORMAT_INT,
     PL_VERTEX_FORMAT_INT2,
     PL_VERTEX_FORMAT_INT3,
-    PL_VERTEX_FORMAT_INT4,    
+    PL_VERTEX_FORMAT_INT4,
+    
+    PL_VERTEX_FORMAT_DOUBLE,  // must check for support (no metal support)
+    PL_VERTEX_FORMAT_DOUBLE2, // must check for support (no metal support)
+    PL_VERTEX_FORMAT_DOUBLE3, // must check for support (no metal support)
+    PL_VERTEX_FORMAT_DOUBLE4, // must check for support (no metal support)
 
     PL_VERTEX_FORMAT_COUNT
 };

extensions/pl_graphics_metal.m

@@ -3143,6 +3143,15 @@
         case PL_VERTEX_FORMAT_INT2:    return MTLVertexFormatInt2;
         case PL_VERTEX_FORMAT_INT3:    return MTLVertexFormatInt3;
         case PL_VERTEX_FORMAT_INT4:    return MTLVertexFormatInt4;
+        
+        case PL_VERTEX_FORMAT_DOUBLE:
+        case PL_VERTEX_FORMAT_DOUBLE2:
+        case PL_VERTEX_FORMAT_DOUBLE3:
+        case PL_VERTEX_FORMAT_DOUBLE4:
+        {
+            PL_ASSERT(false && "Unsupported vertex format");
+            return MTLVertexFormatInvalid;
+        }
     }
 
     PL_ASSERT(false && "Unsupported vertex format");

extensions/pl_graphics_vulkan.c

@@ -2822,6 +2822,9 @@ pl_enumerate_devices(plDeviceInfo *atDeviceInfo, uint32_t* puDeviceCount)
             .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DESCRIPTOR_INDEXING_FEATURES,
             .pNext = &tDeviceFeatures12};
 
+        if(tDeviceFeatures.shaderFloat64) atDeviceInfo[i].tCapabilities |= PL_DEVICE_CAPABILITY_SHADER_FLOAT_64;
+        if(tDeviceFeatures.shaderInt64)   atDeviceInfo[i].tCapabilities |= PL_DEVICE_CAPABILITY_SHADER_INT_64;
+
         // create logical device
         tDeviceFeatures12.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_2_FEATURES;
         tDeviceFeatures2.pNext = &tDescriptorIndexingFeatures;
@@ -4922,6 +4925,10 @@ pl__vulkan_vertex_format(plVertexFormat tFormat)
         case PL_VERTEX_FORMAT_FLOAT2:  return VK_FORMAT_R32G32_SFLOAT;
         case PL_VERTEX_FORMAT_FLOAT3:  return VK_FORMAT_R32G32B32_SFLOAT;
         case PL_VERTEX_FORMAT_FLOAT4:  return VK_FORMAT_R32G32B32A32_SFLOAT;
+        case PL_VERTEX_FORMAT_DOUBLE:  return VK_FORMAT_R64_SFLOAT;
+        case PL_VERTEX_FORMAT_DOUBLE2: return VK_FORMAT_R64G64_SFLOAT;
+        case PL_VERTEX_FORMAT_DOUBLE3: return VK_FORMAT_R64G64B64_SFLOAT;
+        case PL_VERTEX_FORMAT_DOUBLE4: return VK_FORMAT_R64G64B64A64_SFLOAT;
         case PL_VERTEX_FORMAT_UCHAR:   return VK_FORMAT_R8_UNORM;
         case PL_VERTEX_FORMAT_UCHAR2:  return VK_FORMAT_R8G8_UNORM;
         case PL_VERTEX_FORMAT_UCHAR3:  return VK_FORMAT_R8G8B8_UNORM;