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Optimize Some Image Functions. (#2429)

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Anilforextra 2022-04-23 14:36:47 +05:45 committed by GitHub
parent 559ffc6331
commit a5daee3812
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1 changed files with 29 additions and 8 deletions
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37
src/rtextures.c
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@ -1889,10 +1889,10 @@ void ImageColorTint(Image *image, Color color)
unsigned char b = (unsigned char)(((float)pixels[index].b/255*cB)*255.0f);
unsigned char a = (unsigned char)(((float)pixels[index].a/255*cA)*255.0f);
pixels[y*image->width + x].r = r;
pixels[y*image->width + x].g = g;
pixels[y*image->width + x].b = b;
pixels[y*image->width + x].a = a;
pixels[index].r = r;
pixels[index].g = g;
pixels[index].b = b;
pixels[index].a = a;
}
}
@ -2411,7 +2411,20 @@ Color GetImageColor(Image image, int x, int y)
// Clear image background with given color
void ImageClearBackground(Image *dst, Color color)
{
for (int i = 0; i < dst->width*dst->height; ++i) ImageDrawPixel(dst, i%dst->width, i/dst->width, color);
// Security check to avoid program crash
if ((dst->data == NULL) || (dst->width == 0) || (dst->height == 0)) return;
// Fill in first pixel based on image format
ImageDrawPixel(dst, 0, 0, color);
unsigned char *pSrcPixel = (unsigned char *)dst->data;
int bytesPerPixel = GetPixelDataSize(1, 1, dst->format);
// Repeat the first pixel data throughout the image
for (int i = 1; i < dst->width * dst->height; i++)
{
memcpy(pSrcPixel + i * bytesPerPixel, pSrcPixel, bytesPerPixel);
}
}
// Draw pixel within an image
@ -2685,13 +2698,21 @@ void ImageDrawRectangleRec(Image *dst, Rectangle rec, Color color)
int ey = sy + (int)rec.height;
int sx = (int)rec.x;
int ex = sx + (int)rec.width;
int bytesPerPixel = GetPixelDataSize(1, 1, dst->format);
for (int y = sy; y < ey; y++)
{
for (int x = sx; x < ex; x++)
// Fill in the first pixel of the row based on image format
ImageDrawPixel(dst, sx, y, color);
int bytesOffset = ((y * dst->width) + sx) * bytesPerPixel;
unsigned char *pSrcPixel = (unsigned char *)dst->data + bytesOffset;
// Repeat the first pixel data throughout the row
for (int x = 1; x < (int)rec.width; x++)
{
ImageDrawPixel(dst, x, y, color);
memcpy(pSrcPixel + x * bytesPerPixel, pSrcPixel, bytesPerPixel);
}
}
}