Merge pull request #12235 from liamwhite/flip-clip
renderer_vulkan: adjust window origin and swizzle independently
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@ -75,14 +75,20 @@ VkViewport GetViewportState(const Device& device, const Maxwell& regs, size_t in
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const float width = conv(src.scale_x * 2.0f);
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float y = conv(src.translate_y - src.scale_y);
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float height = conv(src.scale_y * 2.0f);
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bool y_negate = regs.window_origin.mode != Maxwell::WindowOrigin::Mode::UpperLeft;
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if (!device.IsNvViewportSwizzleSupported()) {
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y_negate = y_negate != (src.swizzle.y == Maxwell::ViewportSwizzle::NegativeY);
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const bool lower_left = regs.window_origin.mode != Maxwell::WindowOrigin::Mode::UpperLeft;
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const bool y_negate = !device.IsNvViewportSwizzleSupported() &&
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src.swizzle.y == Maxwell::ViewportSwizzle::NegativeY;
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if (lower_left) {
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// Flip by surface clip height
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y += conv(static_cast<f32>(regs.surface_clip.height));
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height = -height;
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}
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if (y_negate) {
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y += conv(static_cast<f32>(regs.surface_clip.height));
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// Flip by viewport height
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y += height;
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height = -height;
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}
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