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[vk_rasterizer] Fix viewport Y flip for negative scale_y (#4558)
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-------------------
credit: ReiKatari

Aggelos 1/2 viewport fix

ff269fbb49
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4558
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
This commit is contained in:
PavelBARABANOV 2026-10-30 05:05:24 +01:00 • committed by crueter
parent ea92c081b7
commit 035f4611cb
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1 changed files with 6 additions and 1 deletions
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7
src/video_core/renderer_vulkan/vk_rasterizer.cpp
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@ -82,7 +82,12 @@ VkViewport GetViewportState(const Device& device, const Maxwell& regs, size_t in
if (lower_left) {
// Flip by surface clip height
y += conv(static_cast<f32>(regs.surface_clip.height));
const float clip_height = conv(static_cast<f32>(regs.surface_clip.height));
if (src.scale_y < 0.0f && y >= clip_height) {
y = clip_height - y;
} else {
y += clip_height;
}
height = -height;
}