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Diffstat (limited to 'docs/reference/render-frame.md')
| -rw-r--r-- | docs/reference/render-frame.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/docs/reference/render-frame.md b/docs/reference/render-frame.md index ec78020..5add02b 100644 --- a/docs/reference/render-frame.md +++ b/docs/reference/render-frame.md @@ -69,6 +69,14 @@ projection matrix contract. ## Parity risks +`VulkanStaticCamera::from_legacy_d3d7` keeps the D3D7 view and projection +reconstruction in `fparkan-render`, then negates the vertical projection term +once at the Vulkan adapter boundary. D3D7's top-down viewport places positive +NDC Y at the top; the Vulkan swapchain uses a positive viewport height, so the +adapter flips NDC Y while the shader preserves `gl_Position`. The generic +`from_row_major_view_projection` path remains unchanged; its callers supply +Vulkan-ready matrices, as the free-flight camera already does. + - x87 precision and rounding; - scalar/SIMD `g_FastProc` differences; - object, batch and transparent primitive order; |