1 files changed, 35 insertions, 5 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 6f7fbc0d2a1..5226687ff92 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -3429,6 +3429,35 @@ get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat)
    }
 }
 
+static void
+copytexsubimage_by_slice(struct gl_context *ctx,
+                         struct gl_texture_image *texImage,
+                         GLuint dims,
+                         GLint xoffset, GLint yoffset, GLint zoffset,
+                         struct gl_renderbuffer *rb,
+                         GLint x, GLint y,
+                         GLsizei width, GLsizei height)
+{
+   if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
+      int slice;
+
+      /* For 1D arrays, we copy each scanline of the source rectangle into the
+       * next array slice.
+       */
+      assert(zoffset == 0);
+
+      for (slice = 0; slice < height; slice++) {
+         assert(yoffset + slice < texImage->Height);
+         ctx->Driver.CopyTexSubImage(ctx, 2, texImage,
+                                     xoffset, 0, yoffset + slice,
+                                     rb, x, y + slice, width, 1);
+      }
+   } else {
+      ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
+                                  xoffset, yoffset, zoffset,
+                                  rb, x, y, width, height);
+   }
+}
 
 
 /**
@@ -3517,8 +3546,9 @@ copyteximage(struct gl_context *ctx, GLuint dims,
                struct gl_renderbuffer *srcRb =
                   get_copy_tex_image_source(ctx, texImage->TexFormat);
 
-               ctx->Driver.CopyTexSubImage(ctx, dims, texImage, dstX, dstY, dstZ,
-                                           srcRb, srcX, srcY, width, height);
+               copytexsubimage_by_slice(ctx, texImage, dims,
+                                        dstX, dstY, dstZ,
+                                        srcRb, srcX, srcY, width, height);
             }
 
             check_gen_mipmap(ctx, target, texObj, level);
@@ -3610,9 +3640,9 @@ copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
          struct gl_renderbuffer *srcRb =
             get_copy_tex_image_source(ctx, texImage->TexFormat);
 
-         ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
-                                     xoffset, yoffset, zoffset,
-                                     srcRb, x, y, width, height);
+         copytexsubimage_by_slice(ctx, texImage, dims,
+                                  xoffset, yoffset, zoffset,
+                                  srcRb, x, y, width, height);
 
          check_gen_mipmap(ctx, target, texObj, level);