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Unified Diff: site/dev/runtime/config.md

Issue 940663002: Runtime configuration section of docs (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: too much fun with formatting Created 5 years, 10 months ago
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Index: site/dev/runtime/config.md
diff --git a/site/dev/runtime/config.md b/site/dev/runtime/config.md
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+Runtime Configuration Settings
+==============================
+
+Here is a (partial) list of Skia's runtime configuration settings:
+
+## Warning suppression:
+
+* configuration name: images.gif.suppressDecoderWarnings
+ environment variable: skia_images_gif_suppressDecoderWarnings
+ type: boolean
+ description: Suppress GIF warnings and errors when calling image decode
+ functions.
+ default: true.
+
+* configuration name: images.jpeg.suppressDecoderWarnings
+ environment variable: skia_images_jpeg_suppressDecoderWarnings
+ type: boolean
+ description: Suppress most JPG warnings when calling decode functions.
+ default: false in debug, true otherwise.
+
+* configuration name: images.jpeg.suppressDecoderErrors
+ environment variable: skia_images_jpeg_suppressDecoderErrors
+ type: boolean
+ description: Suppress most JPG error messages when decode function fails.
+ default: false in debug, true otherwise.
+
+* configuration name: images.png.suppressDecoderWarnings
+ environment variable: skia_images_png_suppressDecoderWarnings
+ type: boolean
+ description: Suppress most PNG warnings when calling image decode functions.
+ default: false in debug, true otherwise.
+
+## Other:
+
+* configuration name: bitmap.filter
+ environment variable: skia_bitmap_filter
+ type: string
+ description: Which scanline bitmap filter to use \[mitchell, lanczos, hamming,
+ gaussian, triangle, box\]
+ default: mitchell
+
+* configuration name: mask.filter.analyticNinePatch
+ environment variable: skia_mask_filter_analyticNinePatch
+ type: boolean
+ description: Use the faster analytic blur approach for ninepatch rects
+ default: \?
+
+* configuration name: gpu.deferContext
+ environment variable: skia_gpu_deferContext
+ type: boolean
+ description: Defers rendering in GrContext via GrInOrderDrawBuffer
+ default: true
+
+* configuration name: gpu.dumpFontCache
+ environment variable: skia_gpu_dumpFontCache
+ type: boolean
+ description: Dump the contents of the font cache before every purge
+ default: false
+
+* configuration name: bitmap.filter.highQualitySSE
+ environment variable: skia_bitmap_filter_highQualitySSE
+ type: boolean
+ description: Use SSE optimized version of high quality image filters
+ default: false
+
+## Use:
+
+These configuration values can be changed at runtime by including this in your
+program:
+
+<!--?prettify?-->
+~~~~
+#include "SkRTConf.h"
+/*...*/
+int main() {
+ SK_CONF_SET( configuration_name, new_value );
+ /*...*/
+~~~~
+
+Or by setting the corresponding environment variable before starting the
+program. For example, in Bourne shell:
+
+<!--?prettify?-->
+~~~~
+#!/bin/sh
+export skia_environment_variable="new_value"
+your_program
+~~~~
+
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