From f944a59996287de85d4c6d9b7b000d25f41b1d79 Mon Sep 17 00:00:00 2001 From: Bas Nieuwenhuizen Date: Sat, 12 May 2018 23:56:56 +0200 Subject: [PATCH] radv: Disable texel buffers with A2 SNORM/SSCALED/SINT for pre-vega. The hardware always interprets the alpha as unsigned and fixing it in the shader is going to add unacceptable overheads. CC: 18.0 18.1 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106480 Reviewed-by: Samuel Pitoiset --- src/amd/vulkan/radv_formats.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/src/amd/vulkan/radv_formats.c b/src/amd/vulkan/radv_formats.c index f8438f4..1ac07b4 100644 --- a/src/amd/vulkan/radv_formats.c +++ b/src/amd/vulkan/radv_formats.c @@ -657,6 +657,25 @@ radv_physical_device_get_format_properties(struct radv_physical_device *physical tiled |= VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT; } + switch(format) { + case VK_FORMAT_A2R10G10B10_SNORM_PACK32: + case VK_FORMAT_A2B10G10R10_SNORM_PACK32: + case VK_FORMAT_A2R10G10B10_SSCALED_PACK32: + case VK_FORMAT_A2B10G10R10_SSCALED_PACK32: + case VK_FORMAT_A2R10G10B10_SINT_PACK32: + case VK_FORMAT_A2B10G10R10_SINT_PACK32: + if (physical_device->rad_info.chip_class <= VI && + physical_device->rad_info.family != CHIP_STONEY) { + buffer &= ~(VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT | + VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BIT); + linear = 0; + tiled = 0; + } + break; + default: + break; + } + out_properties->linearTilingFeatures = linear; out_properties->optimalTilingFeatures = tiled; out_properties->bufferFeatures = buffer; -- 2.7.4