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[Fix] (Magma): convert 32-bit int and packed 2_10_10_10 float attributes on the CPU

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swung0x48
2026-10-12 21:13:30 -04:00
parent 4e0989b99a
commit 8c2d5019c2
2 changed files with 48 additions and 1 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.cpp
+14
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@@ -160,6 +160,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
format = ToFloat32VertexFormat(attr.Size);
conversion = VertexStreamConversion::Float64ToFloat32;
}
// GL_INT / GL_UNSIGNED_INT read as float (glVertexAttribFormat without the I suffix):
// Vulkan has no 32-bit SCALED or NORM vertex format, so the stream is converted to
// float32 on the CPU, normalized when the attribute asks for it.
if (format == VK_FORMAT_UNDEFINED && !attr.IsInteger && !attr.IsLong && !attr.IsBgra &&
(type == DataType::Int32 || type == DataType::Uint32)) {
format = ToFloat32VertexFormat(attr.Size);
conversion = VertexStreamConversion::ScaledIntegerToFloat32;
}
if (format == VK_FORMAT_UNDEFINED) { maskOut("format-map"); continue; }
if (!SupportsVertexBufferFormat(format)) {
if (!IsScaledIntegerVertexFormat(format)) { maskOut("native-format-feature", format); continue; }
@@ -432,6 +440,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
case VK_FORMAT_R16G16B16_SSCALED:
case VK_FORMAT_R16G16B16A16_USCALED:
case VK_FORMAT_R16G16B16A16_SSCALED:
// Packed 2_10_10_10 fetches are optional too (Adreno has neither SCALED form); the
// converter decodes the fields itself, normalized or not.
case VK_FORMAT_A2B10G10R10_USCALED_PACK32:
case VK_FORMAT_A2B10G10R10_SSCALED_PACK32:
case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
case VK_FORMAT_A2B10G10R10_SNORM_PACK32:
return true;
default:
return false;