DanSandClaude Opus 4.8
968d6d3875
The acrylic effect blits its backdrop from the default framebuffer using the logical viewport size as the source rectangle. On a HiDPI display the framebuffer is larger than the logical size, so the blur sampled only the lower-left corner of the screen and the glass showed the wrong region stretched across each panel. - The capture blit source now uses the real framebuffer pixel size (logical size times ImGui's DisplayFramebufferScale, truncated the same way the GL backend does), while the capture and blur targets stay at logical size. The framebuffer size is tracked separately from the viewport size so quality or buffer-lifetime resets cannot lose it, and moving the window between a Retina and a non-Retina display redoes the capture. DX11 is unaffected; its scale is one. - The debug screenshot sweep captures at framebuffer size too, so HiDPI captures are no longer cropped. Tests: the framebuffer-extent helper matches the GL backend's truncation and falls back to the logical size when the scale is unknown. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
13 lines
688 B
C++
13 lines
688 B
C++
#pragma once
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#include <cmath>
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namespace dragonx { namespace ui { namespace effects {
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/// Framebuffer pixel extent for a window-unit extent and ImGui's DisplayFramebufferScale. Same truncation as
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/// imgui_impl_opengl3.cpp (`(int)(DisplaySize.x * DisplayFramebufferScale.x)`), so the blit source matches FB 0.
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inline int framebufferExtent(float logical, float scale) {
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if (!(scale > 0.0f) || !(logical > 0.0f)) return (int)logical;
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return (int)(logical * scale);
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}
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/// Source extent for the capture blit: the framebuffer size when known, else the logical size.
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inline int captureSourceExtent(int fbExtent, int logicalExtent) { return fbExtent > 0 ? fbExtent : logicalExtent; }
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}}}
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