Mesa (master): mesa: raise GL_INVALID_OPERATION for glReadPixels( GL_COLOR_INDEX)

[Brian Paul]

Module: Mesa
Branch: master
Commit: f86d7af4a0003997890edc84158e72c21c11037e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f86d7af4a0003997890edc84158e72c21c11037e

Author: Brian Paul <brianp at vmware.com>
Date:   Tue Apr 20 16:12:34 2010 -0600

mesa: raise GL_INVALID_OPERATION for glReadPixels(GL_COLOR_INDEX)

We no longer support CI-mode color buffers so this is always an error.

---

 src/mesa/main/readpix.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index f4d74e8..93f2bd3 100644
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -103,6 +103,12 @@ _mesa_error_check_format_type(GLcontext *ctx, GLenum format, GLenum type,
                         "glReadPixels(no color buffer)");
             return GL_TRUE;
          }
+         /* We no longer support CI-mode color buffers so trying to read
+          * GL_COLOR_INDEX pixels is always an error.
+          */
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glReadPixels(color buffer is RGB)");
+         return GL_TRUE;
       }
       break;
    case GL_STENCIL_INDEX: