mesa: updates some comments in buffers.c

[mesa.git] / src / mesa / main / framebuffer.c

diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 77c04b8dab8677fa0c8b35e52afdc7d8ba15a13c..d18166d528ea6622919092c606009d499f068cf2 100644 (file)
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -271,8 +271,7 @@ _mesa_reference_framebuffer_(struct gl_framebuffer **ptr,
  * Resize the given framebuffer's renderbuffers to the new width and height.
  * This should only be used for window-system framebuffers, not
  * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).
- * This will typically be called via ctx->Driver.ResizeBuffers() or directly
- * from a device driver.
+ * This will typically be called directly from a device driver.
  *
  * \note it's possible for ctx to be null since a window can be resized
  * without a currently bound rendering context.
@@ -938,7 +937,7 @@ _mesa_print_framebuffer(const struct gl_framebuffer *fb)
 
    fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
    fprintf(stderr, "  Size: %u x %u  Status: %s\n", fb->Width, fb->Height,
-           _mesa_lookup_enum_by_nr(fb->_Status));
+           _mesa_enum_to_string(fb->_Status));
    fprintf(stderr, "  Attachments:\n");
 
    for (i = 0; i < BUFFER_COUNT; i++) {
@@ -965,3 +964,22 @@ _mesa_print_framebuffer(const struct gl_framebuffer *fb)
       }
    }
 }
+
+bool
+_mesa_is_front_buffer_reading(const struct gl_framebuffer *fb)
+{
+   if (!fb || _mesa_is_user_fbo(fb))
+      return false;
+
+   return fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT;
+}
+
+bool
+_mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb)
+{
+   if (!fb || _mesa_is_user_fbo(fb))
+      return false;
+
+   return (fb->_NumColorDrawBuffers >= 1 &&
+           fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT);
+}