2022-09-26 13:57:57 +00:00
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# HG changeset patch
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# Parent 3de59fe1b8708c01e134ce698c4232b8a854f617
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2021-04-14 13:39:31 +00:00
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Problem: webGL sites are displayed in the wrong color (usually blue-ish)
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Solution: Problem is with skia once again. Output of webgl seems endian-correct, but skia only
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knows how to deal with little endian.
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So we swizzle the output of webgl after reading it from readpixels()
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Note: This does not fix all webGL sites, but is a step in the right direction
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2022-09-26 13:57:57 +00:00
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2023-10-05 15:30:30 +00:00
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Index: firefox-115.0/gfx/gl/GLContext.h
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===================================================================
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--- firefox-115.0.orig/gfx/gl/GLContext.h
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+++ firefox-115.0/gfx/gl/GLContext.h
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@@ -1560,6 +1560,13 @@ class GLContext : public GenericAtomicRe
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2021-04-14 13:39:31 +00:00
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BEFORE_GL_CALL;
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mSymbols.fReadPixels(x, y, width, height, format, type, pixels);
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OnSyncCall();
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2022-09-26 13:57:57 +00:00
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+#if MOZ_BIG_ENDIAN()
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2021-04-14 13:39:31 +00:00
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+ uint8_t* itr = (uint8_t*)pixels;
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+ for (GLsizei i = 0; i < width * height; i++) {
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+ NativeEndian::swapToLittleEndianInPlace((uint32_t*)itr, 1);
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+ itr += 4;
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+ }
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+#endif
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AFTER_GL_CALL;
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mHeavyGLCallsSinceLastFlush = true;
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}
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