tyler
724956278d
The font atlas was rasterized once at a fixed 16px and point-filtered, then scaled to a logical size at draw time. On HiDPI it got upscaled (acceptable); on standard-DPI it got downscaled, and point filtering dropped rows/columns of the anti-aliased glyphs, thinning stems into a faint "hyper-skinny" look. Bake the atlas at the real physical size text is drawn at (16 * GetUIScale() * GetWindowScaleDPI().y), quantized to 4px steps, and rebuild it via EnsureUIFont() once per frame when that density changes (resize, or moving between monitors of different DPI). Use mipmaps + trilinear filtering so downsampling stays smooth. Call sites are unchanged: DrawTextEx still scales the atlas glyph to the same logical size, only the backing resolution differs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
60 lines
2.7 KiB
C
60 lines
2.7 KiB
C
// render.h - UI scaling, colormaps, spectrogram texture generation, drawing
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#ifndef RENDER_H
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#define RENDER_H
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#include "spectrogram_types.h"
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// --- UI scaling & scaled text ---
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float GetUIScale(void);
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void DrawTextScaled(const char* text, float x, float y, float baseSize, Color color);
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float MeasureTextScaled(const char* text, float baseSize);
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// --- DPI-aware UI font ---
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// InitUIFont remembers the TTF path and bakes the first atlas; EnsureUIFont
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// rebuilds it (cheap no-op when unchanged) whenever the effective pixel density
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// (window UI scale * monitor DPI scale) shifts, keeping text crisp on any
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// display instead of thinning out on standard-DPI screens. Call EnsureUIFont
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// once per frame before drawing text.
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void InitUIFont(const char* path);
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void EnsureUIFont(void);
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// --- Colormaps ---
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void GenerateColormapTexture(void);
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const char* ColormapName(ColormapType type);
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// --- Spectrogram texture ---
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// GenerateSpectrogramTexture recomputes the synchrosqueezed reassignment (use
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// when the STFT changes). ColorizeSpectrogram only re-maps the cached
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// reassignment to colors (use for dB-floor / colormap changes).
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void GenerateSpectrogramTexture(StftResult* stft, Image* image, Texture2D* texture);
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void ColorizeSpectrogram(Image* image, Texture2D* texture);
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// --- Headless (no-GL) spectrogram + annotation rendering ---
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// BuildSpectrogramImageCPU fills `image` with the colorized spectrogram with no
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// texture upload, so it runs with no window / no X server. LoadFontCPU returns
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// a Font usable by ImageDrawTextEx without a GL context (glyphCount==0 on
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// failure). DrawAnnotationsToImage paints the mLnL overlay onto a full-
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// resolution spectrogram Image, honoring the kind filter and resting opacity.
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void BuildSpectrogramImageCPU(StftResult* stft, Image* image);
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Font LoadFontCPU(const char* path, int baseSize);
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void DrawAnnotationsToImage(Image* img, Font font);
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// --- On-screen drawing (operate on the global app state) ---
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void DrawSpectrogramGrid(Rectangle bounds, int numCellsX, int numCellsY, Color color);
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void DrawLabels(Rectangle bounds);
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void DrawSelection(Rectangle bounds);
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void DrawSelectionDrag(Rectangle bounds);
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void DrawCursorReadout(Rectangle bounds);
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void DrawMarkers(Rectangle bounds);
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void DrawSpectrumPanel(Rectangle bounds);
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void DrawPlayhead(Rectangle bounds);
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void DrawAnnotations(Rectangle bounds);
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// Annotation timeline lane. Updates app.hoveredTimelineEvent and
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// app.selectedAnnotation in response to mouse interaction in `lane`.
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void DrawTimeline(Rectangle lane);
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// Time-only annotation overlay rendered on top of the waveform scope.
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// Shares opacity/selection state with the spectrogram overlay.
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void DrawAnnotationsOnScope(Rectangle scopeBounds);
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#endif // RENDER_H
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