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[rtextures] ImageDraw(): Don't try to blend images without alpha (#4395)

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Nikolas 2024-10-21 01:31:01 +03:00 • committed by GitHub
parent 3dbbe60376
commit 51ff6586f4
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1 changed files with 10 additions and 2 deletions
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src/rtextures.c
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@ -3969,13 +3969,21 @@ void ImageDraw(Image *dst, Image src, Rectangle srcRec, Rectangle dstRec, Color
// [-] GetPixelColor(): Get Vector4 instead of Color, easier for ColorAlphaBlend()
// [ ] Support f32bit channels drawing
// TODO: Support PIXELFORMAT_UNCOMPRESSED_R32, PIXELFORMAT_UNCOMPRESSED_R32G32B32, PIXELFORMAT_UNCOMPRESSED_R32G32B32A32 and 16-bit equivalents
// TODO: Support PIXELFORMAT_UNCOMPRESSED_R32G32B32A32 and PIXELFORMAT_UNCOMPRESSED_R1616B16A16
Color colSrc, colDst, blend;
bool blendRequired = true;
// Fast path: Avoid blend if source has no alpha to blend
if ((tint.a == 255) && ((srcPtr->format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) || (srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) || (srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R5G6B5))) blendRequired = false;
if ((tint.a == 255) &&
((srcPtr->format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R5G6B5) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R32) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R32G32B32) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R16) ||
(srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R16G16B16)))
blendRequired = false;
int strideDst = GetPixelDataSize(dst->width, 1, dst->format);
int bytesPerPixelDst = strideDst/(dst->width);