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graphics: share packed texture and render-target channel layouts

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Resolve PS5 5551 textures with alpha in bit 15 and compose host channel order with guest selectors. Share the existing render-target mapping with sampled textures so packed layouts cannot diverge.

Add native GPU readback coverage for 5551 and 4444, arbitrary selectors, constants, and existing 1555 render-target mapping. Verified PPSA24515 through launch.json with Vulkan validation, advancing scenes and over 12,700 guest flips. Independent correctness and cleanliness audits passed.
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nmzik committed 2026-09-10 14:36:15 +04:00
1 parent 635fb8882b
commit a305a6c1c6
5 files changed
+181 -38
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src/graphics/host_gpu/renderer/image/textureCommon.h
+5 -7
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@@ -20,12 +20,9 @@ struct RenderTargetFormatInfo {
};
struct SurfaceFormatInfo {
explicit constexpr SurfaceFormatInfo(vk::Format format,
Prospero::BufferFormat conversion_format)
: vk_format(format), conversion_format(conversion_format) {}
vk::Format vk_format;
Prospero::BufferFormat conversion_format;
vk::Format vk_format;
Prospero::BufferFormat conversion_format;
Prospero::ColorComponentMapping host_to_storage;
};
struct TextureUploadMipLayout {
@@ -43,7 +40,8 @@ struct TextureUploadLayout {
TextureUploadMipLayout mips[16] = {};
};
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle);
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle,
Prospero::ColorComponentMapping host_to_storage);
SurfaceFormatInfo TextureGetSurfaceFormatInfo(Prospero::BufferFormat format);
RenderTargetFormatInfo TextureGetRenderTargetFormat(Prospero::ChannelLayout layout,
Prospero::ChannelType type,