mesa/main: Add functions to clear and dirty texture objects.

This commit adds a function to clear a texture object such that there is
no image data associated with it, and a function to dirty it so that it
will be re-tested for completeness.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 3549b68829..83f025f86f 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1219,6 +1219,23 @@ _mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
 
 
 /**
+ * Free and clear fields of the gl_texture_image struct.
+ *
+ * \param ctx GL context.
+ * \param texImage texture image structure to be cleared.
+ *
+ * After the call, \p texImage will have no data associated with it.  Its
+ * fields are cleared so that its parent object will test incomplete.
+ */
+void
+_mesa_clear_texture_image(GLcontext *ctx, struct gl_texture_image *texImage)
+{
+   ctx->Driver.FreeTexImageData(ctx, texImage);
+   clear_teximage_fields(texImage);
+}
+
+
+/**
  * This is the fallback for Driver.TestProxyTexImage().  Test the texture
  * level, width, height and depth against the ctx->Const limits for textures.
  *