Check for linear filtering support in pipeline.sampler tests

[platform/upstream/VK-GL-CTS.git] / external / vulkancts / modules / vulkan / pipeline / vktPipelineImageUtil.cpp

diff --git a/external/vulkancts/modules/vulkan/pipeline/vktPipelineImageUtil.cpp b/external/vulkancts/modules/vulkan/pipeline/vktPipelineImageUtil.cpp
index b873a29..b18b317 100644 (file)
--- a/external/vulkancts/modules/vulkan/pipeline/vktPipelineImageUtil.cpp
+++ b/external/vulkancts/modules/vulkan/pipeline/vktPipelineImageUtil.cpp
@@ -113,6 +113,39 @@ bool isSupportedSamplableFormat (const InstanceInterface& instanceInterface, VkP
        return (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT) != 0u;
 }
 
+// \todo [2016-01-21 pyry] Update this to just rely on vkDefs.hpp once
+//                                                CTS has been updated to 1.0.2.
+enum
+{
+       VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT = 0x00001000,
+};
+
+bool isLinearFilteringSupported (const InstanceInterface& vki, VkPhysicalDevice physicalDevice, VkFormat format, VkImageTiling tiling)
+{
+       const VkFormatProperties        formatProperties        = getPhysicalDeviceFormatProperties(vki, physicalDevice, format);
+       const VkFormatFeatureFlags      formatFeatures          = tiling == VK_IMAGE_TILING_LINEAR
+                                                                                                       ? formatProperties.linearTilingFeatures
+                                                                                                       : formatProperties.optimalTilingFeatures;
+
+       switch (format)
+       {
+               case VK_FORMAT_R32_SFLOAT:
+               case VK_FORMAT_R32G32_SFLOAT:
+               case VK_FORMAT_R32G32B32_SFLOAT:
+               case VK_FORMAT_R32G32B32A32_SFLOAT:
+               case VK_FORMAT_R64_SFLOAT:
+               case VK_FORMAT_R64G64_SFLOAT:
+               case VK_FORMAT_R64G64B64_SFLOAT:
+               case VK_FORMAT_R64G64B64A64_SFLOAT:
+                       return (formatFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT) != 0;
+
+               default:
+                       // \todo [2016-01-21 pyry] Check for all formats once drivers have been updated to 1.0.2
+                       //                                                 and we have tests to verify format properties.
+                       return true;
+       }
+}
+
 VkBorderColor getFormatBorderColor (BorderColor color, VkFormat format)
 {
        if (!isCompressedFormat(format) && (isIntFormat(format) || isUintFormat(format)))