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feat: Optimize ImageClearBackground and ImageDrawRectangleRec with doubling strategy (#5363)

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Adi Čaušević 2025-11-19 08:58:43 +01:00 committed by GitHub
parent 3f92c396a0
commit e2233acdb0
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1 changed files with 9 additions and 5 deletions
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14
src/rtextures.c
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@ -3341,11 +3341,14 @@ void ImageClearBackground(Image *dst, Color color)
unsigned char *pSrcPixel = (unsigned char *)dst->data; unsigned char *pSrcPixel = (unsigned char *)dst->data;
int bytesPerPixel = GetPixelDataSize(1, 1, dst->format); int bytesPerPixel = GetPixelDataSize(1, 1, dst->format);
int totalPixels = dst->width * dst->height;
// Repeat the first pixel data throughout the image // Repeat the first pixel data throughout the image,
for (int i = 1; i < dst->width*dst->height; i++) // doubling the pixels copied on each iteration
for (int i = 1; i < totalPixels; i *= 2)
{ {
memcpy(pSrcPixel + i*bytesPerPixel, pSrcPixel, bytesPerPixel); int pixelsToCopy = MIN(i, totalPixels - i);
memcpy(pSrcPixel + i * bytesPerPixel, pSrcPixel, pixelsToCopy * bytesPerPixel);
} }
} }
@ -3724,9 +3727,10 @@ void ImageDrawRectangleRec(Image *dst, Rectangle rec, Color color)
unsigned char *pSrcPixel = (unsigned char *)dst->data + bytesOffset; unsigned char *pSrcPixel = (unsigned char *)dst->data + bytesOffset;
// Repeat the first pixel data throughout the row // Repeat the first pixel data throughout the row
for (int x = 1; x < (int)rec.width; x++) for (int x = 1; x < (int)rec.width; x *= 2)
{ {
memcpy(pSrcPixel + x*bytesPerPixel, pSrcPixel, bytesPerPixel); int pixelsToCopy = MIN(x, (int)rec.width - x);
memcpy(pSrcPixel + x*bytesPerPixel, pSrcPixel, pixelsToCopy * bytesPerPixel);
} }
// Repeat the first row data for all other rows // Repeat the first row data for all other rows