Without the rebind, the function enables generic vertex attributes 0 and 1 of
the
array object it does not own. This was causing crashes in Euro Truck Simulator
2,
since the enabled generic attribute 0 got precedence before vertex position
attribute
at later time, leading to NULL pointer dereference.
Signed-off-by: Petr Sebor <p...@scssoft.com>
---
src/mesa/drivers/common/meta.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index aa50dde..06e3e3c 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -1516,6 +1516,11 @@ setup_glsl_blit_framebuffer(struct gl_context *ctx,
_mesa_VertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
sizeof(struct vertex), OFFSET(s));
}
+ else {
+ /* Rebind the existing ArrayObj so that _mesa_EnableVertexAttribArray */
+ /* calls do not corrupt the current one. */
+ _mesa_BindVertexArray(blit->ArrayObj);
+ }
/* Generate a relevant fragment shader program for the texture target */
if ((target == GL_TEXTURE_2D && blit->ShaderProg != 0) ||
--
1.8.3.2
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