material: Avoid redundant glBindTexture calls

This adds a _cogl_bind_gl_texture_transient function that should be used
instead of glBindTexture so we can have a consistent cache of the
textures bound to each texture unit so we can avoid some redundant
binding.

1 files changed, 19 insertions, 0 deletions

diff --git a/cogl/cogl-texture-private.h b/cogl/cogl-texture-private.h
index 0f97233e..74ffe033 100644
--- a/cogl/cogl-texture-private.h
+++ b/cogl/cogl-texture-private.h
@@ -118,6 +118,8 @@ struct _CoglTextureVtable
   GLenum (* get_gl_format) (CoglTexture *tex);
   int (* get_width) (CoglTexture *tex);
   int (* get_height) (CoglTexture *tex);
+
+  gboolean (* is_foreign) (CoglTexture *tex);
 };
 
 struct _CoglTexture
@@ -126,6 +128,20 @@ struct _CoglTexture
   const CoglTextureVtable *vtable;
 };
 
+typedef enum _CoglTextureChangeFlags
+{
+  /* Whenever the internals of a texture are changed such that the
+   * underlying GL textures that represent the CoglTexture change then
+   * we notify cogl-material.c via
+   * _cogl_material_texture_pre_change_notify
+   */
+  COGL_TEXTURE_CHANGE_GL_TEXTURES
+
+} CoglTextureChangeFlags;
+
+void
+_cogl_texture_free (CoglTexture *texture);
+
 void
 _cogl_texture_foreach_sub_texture_in_region (CoglHandle handle,
                                              float virtual_tx_1,
@@ -215,4 +231,7 @@ _cogl_texture_draw_and_read (CoglHandle   handle,
                              GLuint       target_gl_format,
                              GLuint       target_gl_type);
 
+gboolean
+_cogl_texture_is_foreign (CoglHandle handle);
+
 #endif /* __COGL_TEXTURE_PRIVATE_H */