Mesa (master): iris: Properly unreference extra VBOs for draw parameters

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Module: Mesa
Branch: master
Commit: face221283f0be316ae6629155a908d8972c2fa7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=face221283f0be316ae6629155a908d8972c2fa7

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Tue Oct  8 10:11:52 2019 -0700

iris: Properly unreference extra VBOs for draw parameters

bound_vertex_buffers doesn't include extra draw parameters buffers.
Tracking this correctly is kind of complicated, and iris_destroy_state
isn't exactly in a hot path, so just loop over all VBO bindings.

Fixes: 4122665dd90 (iris: Enable ARB_shader_draw_parameters support)
Reported-by: Sergii Romantsov <sergii.romantsov at globallogic.com>

---

 src/gallium/drivers/iris/iris_state.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index ab1578fc184..6f0aa182339 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -6045,11 +6045,11 @@ iris_destroy_state(struct iris_context *ice)
    pipe_resource_reference(&ice->draw.draw_params.res, NULL);
    pipe_resource_reference(&ice->draw.derived_draw_params.res, NULL);
 
-   uint64_t bound_vbs = ice->state.bound_vertex_buffers;
-   while (bound_vbs) {
-      const int i = u_bit_scan64(&bound_vbs);
+   /* Loop over all VBOs, including ones for draw parameters */
+   for (unsigned i = 0; i < ARRAY_SIZE(genx->vertex_buffers); i++) {
       pipe_resource_reference(&genx->vertex_buffers[i].resource, NULL);
    }
+
    free(ice->state.genx);
 
    for (int i = 0; i < 4; i++) {