From: Chad Versace <chad.versace@intel.com>
Date: Fri, 28 Aug 2015 15:07:15 +0000 (-0700)
Subject: vk/pipeline: Fix crash when the pipeline has no attributes
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=84cfc08c1059f6190b0ada811003abe93c624e39;p=mesa.git

vk/pipeline: Fix crash when the pipeline has no attributes

If there are no attributes, don't emit 3DSTATE_VERTEX_ELEMENTS.
That packet does not allow 0 attributes.
---

diff --git a/src/vulkan/gen7_pipeline.c b/src/vulkan/gen7_pipeline.c
index a5c7a201690..0ed4727c37f 100644
--- a/src/vulkan/gen7_pipeline.c
+++ b/src/vulkan/gen7_pipeline.c
@@ -39,8 +39,10 @@ gen7_emit_vertex_input(struct anv_pipeline *pipeline,
    const uint32_t num_dwords = 1 + element_count * 2;
    uint32_t *p;
 
-   p = anv_batch_emitn(&pipeline->batch, num_dwords,
-                       GEN7_3DSTATE_VERTEX_ELEMENTS);
+   if (info->attributeCount > 0) {
+      p = anv_batch_emitn(&pipeline->batch, num_dwords,
+                          GEN7_3DSTATE_VERTEX_ELEMENTS);
+   }
 
    for (uint32_t i = 0; i < info->attributeCount; i++) {
       const VkVertexInputAttributeDescription *desc =
diff --git a/src/vulkan/gen8_pipeline.c b/src/vulkan/gen8_pipeline.c
index b1cb16234d5..fae09f3fbbe 100644
--- a/src/vulkan/gen8_pipeline.c
+++ b/src/vulkan/gen8_pipeline.c
@@ -36,8 +36,10 @@ emit_vertex_input(struct anv_pipeline *pipeline,
    const uint32_t num_dwords = 1 + info->attributeCount * 2;
    uint32_t *p;
 
-   p = anv_batch_emitn(&pipeline->batch, num_dwords,
-                       GEN8_3DSTATE_VERTEX_ELEMENTS);
+   if (info->attributeCount > 0) {
+      p = anv_batch_emitn(&pipeline->batch, num_dwords,
+                          GEN8_3DSTATE_VERTEX_ELEMENTS);
+   }
 
    for (uint32_t i = 0; i < info->attributeCount; i++) {
       const VkVertexInputAttributeDescription *desc =