[Piglit] [PATCH] gl-1.0-simple-renderbuffer: add a protection from test failure when an user fbo is defined

[Sandra Koroniewska]

This fixes spec/gl-1.0/simple-readbuffer with the argument "-fbo" according to OpenGL 4.4 spec (page 476).
---
 tests/spec/gl-1.0/simple-readbuffer.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/spec/gl-1.0/simple-readbuffer.c b/tests/spec/gl-1.0/simple-readbuffer.c
index e5b67bf4d..f85b56d38 100644
--- a/tests/spec/gl-1.0/simple-readbuffer.c
+++ b/tests/spec/gl-1.0/simple-readbuffer.c
@@ -45,7 +45,10 @@ piglit_display(void)
 void
 piglit_init(int argc, char **argv)
 {
-	glReadBuffer(GL_FRONT);
+    if (piglit_use_fbo == false)
+        glReadBuffer(GL_FRONT);
+    else
+        glReadBuffer(GL_COLOR_ATTACHMENT0);
 
 	if (!piglit_check_gl_error(GL_NO_ERROR)) {
 		piglit_report_result(PIGLIT_FAIL);
-- 
2.11.0.windows.1