It fixes misused x and y offsets on the calculation of the memory copy regions.
And it adds limits of the height and the width on the copy region.
Signed-off-by: Mun Gwan-gyeong <elong...@gmail.com>
---
src/egl/drivers/dri2/platform_drm.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/src/egl/drivers/dri2/platform_drm.c
b/src/egl/drivers/dri2/platform_drm.c
index 4176fde7d1..36e9c74a56 100644
--- a/src/egl/drivers/dri2/platform_drm.c
+++ b/src/egl/drivers/dri2/platform_drm.c
@@ -528,6 +528,9 @@ swrast_put_image2(__DRIdrawable *driDrawable,
struct dri2_egl_surface *dri2_surf = loaderPrivate;
int internal_stride;
struct gbm_dri_bo *bo;
+ int x_offset = x * 4;
+ int copy_width = width * 4;
+ char *src, *dst;
if (op != __DRI_SWRAST_IMAGE_OP_DRAW &&
op != __DRI_SWRAST_IMAGE_OP_SWAP)
@@ -542,9 +545,19 @@ swrast_put_image2(__DRIdrawable *driDrawable,
internal_stride = bo->base.stride;
+ if (height > dri2_surf->base.Height - y)
+ height = dri2_surf->base.Height - y;
+
+ if (copy_width > internal_stride - x_offset)
+ copy_width = internal_stride - x_offset;
+
+ dst = bo->map + x_offset + (y * internal_stride);
+ src = data;
+
for (int i = 0; i < height; i++) {
- memcpy(bo->map + (x + i) * internal_stride + y,
- data + i * stride, stride);
+ memcpy(dst, src, copy_width);
+ dst += internal_stride;
+ src += stride;
}
gbm_dri_bo_unmap_dumb(bo);
--
2.13.3
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