Revert "mesa: add missing RGB9_E5 format in _mesa_base_fbo_format"

This reverts commit 513c2263cbff45edb105c7b46e58f316e06746ab.

_mesa_base_fbo_format_ is used to validate the internalformat
passed to RenderbufferStorage, which in the OpenGL 4.6 is said:

"An INVALID_ENUM error is generated if internalformat is not one of the
color-renderable, depth-renderable, or stencil-renderable formats defined
in section 9.4."

RGB9_E5 format is not renderable, as stated in the same specification
(Bug 9338).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104794

Cc: Juan A. Suarez Romero <jasuarez@igalia.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index c72204e..d23916d 100644 (file)
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -1976,9 +1976,6 @@ _mesa_base_fbo_format(const struct gl_context *ctx, GLenum internalFormat)
                ctx->Extensions.ARB_texture_float) ||
               _mesa_is_gles3(ctx) /* EXT_color_buffer_float */ )
          ? GL_RGBA : 0;
-   case GL_RGB9_E5:
-      return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_shared_exponent)
-         ? GL_RGB: 0;
    case GL_ALPHA16F_ARB:
    case GL_ALPHA32F_ARB:
       return ctx->API == API_OPENGL_COMPAT &&