mesa: Generate FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT earlier

The ARB_framebuffer_object spec lists this case before the
FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER and
FRAMEBUFFER_INCOMPLETE_READ_BUFFER cases.

Fixes two broken cases in piglit's fbo-incomplete test, if
ARB_ES2_compatibility is not advertised. (If it is, this is masked
because the FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER /
FRAMEBUFFER_INCOMPLETE_READ_BUFFER cases are removed by that extension)

Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Brian Paul <[email protected]>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index dfe2f1e9300..c4083073b2f 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -1080,6 +1080,12 @@ _mesa_test_framebuffer_completeness(struct gl_context *ctx,
 
    fb->MaxNumLayers = max_layer_count;
 
+   if (numImages == 0) {
+      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+      fbo_incomplete(ctx, "no attachments", -1);
+      return;
+   }
+
    if (_mesa_is_desktop_gl(ctx) && !ctx->Extensions.ARB_ES2_compatibility) {
       /* Check that all DrawBuffers are present */
       for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
@@ -1108,12 +1114,6 @@ _mesa_test_framebuffer_completeness(struct gl_context *ctx,
       }
    }
 
-   if (numImages == 0) {
-      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
-      fbo_incomplete(ctx, "no attachments", -1);
-      return;
-   }
-
    /* Provisionally set status = COMPLETE ... */
    fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;