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pass correct src_x and src_y for pixman_image_composite32

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Vincent Wei
2021-05-04 10:28:05 +08:00
parent 20a50bc094
commit 9ebf59e4ad
1 changed files with 7 additions and 2 deletions
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9
src/newgal/stretch.c
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@@ -467,14 +467,19 @@ int GAL_StretchBlt (GAL_Surface *src, GAL_Rect *srcrect,
_DBG_PRINTF ("srcrect: %d, %d, %dx%d; dstrect: %d, %d, %dx%d; scale: %f x %f; cliprect: %d, %d, %dx%d\n",
srcrect->x, srcrect->y, srcrect->w, srcrect->h,
dstrect->x, dstrect->y, dstrect->w, dstrect->h,
fscale_x, fscale_y,
1.0/fscale_x, 1.0/fscale_y,
dst->clip_rect.x, dst->clip_rect.y, dst->clip_rect.w, dst->clip_rect.h);
pixman_f_transform_init_identity (&ftransform);
pixman_f_transform_translate (&ftransform, NULL, -dstrect->x, -dstrect->y);
pixman_f_transform_scale (&ftransform, NULL, fscale_x, fscale_y);
pixman_f_transform_translate (&ftransform, NULL, srcrect->x, srcrect->y);
//pixman_f_transform_invert (&ftransform, &ftransform);
pixman_transform_from_pixman_f_transform (&transform, &ftransform);
pixman_image_set_transform (src_img, &transform);
//fscale_x = hypot (ftransform.m[0][0], ftransform.m[0][1]) / ftransform.m[2][2];
//fscale_y = hypot (ftransform.m[1][0], ftransform.m[1][1]) / ftransform.m[2][2];
params = pixman_filter_create_separable_convolution (
&n_params,
pixman_double_to_fixed (fscale_x),
@@ -491,7 +496,7 @@ int GAL_StretchBlt (GAL_Surface *src, GAL_Rect *srcrect,
retv = 0;
pixman_image_composite32 (op, src_img, msk_img, dst_img,
srcrect->x, srcrect->y,
dstrect->x, dstrect->y,
0, 0,
dstrect->x, dstrect->y,
dstrect->w, dstrect->h);