| From 5efa95223daf270f3740b59c6e5de8f92789a8a1 Mon Sep 17 00:00:00 2001 |
| From: Chia-I Wu <olvaffe@gmail.com> |
| Date: Thu, 17 Mar 2022 11:03:18 -0700 |
| Subject: [PATCH] anv: advertise rectangularLines only for Gen10+ |
| |
| We use the non-strict algorithm (with parallelograms) prior to Gen10 for |
| wide lines. We can not advertise rectangularLines. |
| |
| Signed-off-by: Chia-I Wu <olvaffe@gmail.com> |
| Fixes: f6e7de41d7b ("anv: Implement VK_EXT_line_rasterization") |
| --- |
| src/intel/vulkan/anv_device.c | 6 +++++- |
| 1 file changed, 5 insertions(+), 1 deletion(-) |
| |
| diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c |
| index 50c690f96bd..d84fe7050f2 100644 |
| --- a/src/intel/vulkan/anv_device.c |
| +++ b/src/intel/vulkan/anv_device.c |
| @@ -1534,7 +1534,11 @@ void anv_GetPhysicalDeviceFeatures2( |
| case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_LINE_RASTERIZATION_FEATURES_EXT: { |
| VkPhysicalDeviceLineRasterizationFeaturesEXT *features = |
| (VkPhysicalDeviceLineRasterizationFeaturesEXT *)ext; |
| - features->rectangularLines = true; |
| + /* Rectangular lines must use the strict algorithm, which is not |
| + * supported for wide lines prior to ICL. See rasterization_mode for |
| + * details and how the HW states are programmed. |
| + */ |
| + features->rectangularLines = pdevice->info.ver >= 10; |
| features->bresenhamLines = true; |
| /* Support for Smooth lines with MSAA was removed on gfx11. From the |
| * BSpec section "Multisample ModesState" table for "AA Line Support |
| -- |
| 2.31.0 |
| |
