fix: multiple index buffers issues in graphics ext (v1.5.1)

Author: hoffstadt-nasa

docs/changelog.txt

@@ -5,9 +5,10 @@
 Below is the change log for typical users. Minor and older changes stripped
 away, please see git history for details.
 
-- v0.6.3 (2025-xx-xx) (draw)    add image quad (v1.4.0)
-                      (draw)    add draw callbacks
-                      (starter) added reverse z depth buffer support (v1.3.0)
+- v0.6.3 (2025-xx-xx) (draw)     add image quad (v1.4.0)
+                      (draw)     add draw callbacks
+                      (starter)  added reverse z depth buffer support (v1.3.0)
+                      (graphics) fix draw_indexed multiple index buffers (v1.5.1)
 - v0.6.2 (2025-10-08) (draw) performance improvements
                       (draw) fix draw 3d plane issues
                       (draw) add text transforms

docs/version.txt

@@ -60,7 +60,7 @@ the API is complete. It just means we won't break what currently exists.
 * Draw Backend        v1.1.0 (pl_draw_backend_ext.h)
 * DXT                 v1.0.0 (pl_dxt_ext.h)
 * GPU Allocators      v1.0.0 (pl_gpu_allocators_ext.h)
-* Graphics            v1.5.0 (pl_graphics_ext.h)
+* Graphics            v1.5.1 (pl_graphics_ext.h)
 * Image               v1.0.0 (pl_image_ext.h)
 * Job                 v2.2.0 (pl_job_ext.h)
 * Atomics             v1.0.0 (pl_platform_ext.h)

extensions/pl_graphics_ext.h

@@ -114,7 +114,7 @@ Index of this file:
 // [SECTION] apis
 //-----------------------------------------------------------------------------
 
-#define plGraphicsI_version {1, 5, 0}
+#define plGraphicsI_version {1, 5, 1}
 
 //-----------------------------------------------------------------------------
 // [SECTION] includes

extensions/pl_graphics_vulkan.c

@@ -2424,9 +2424,9 @@ pl_draw_indexed(plRenderEncoder* ptEncoder, uint32_t uCount, const plDrawIndex *
 
     for (uint32_t i = 0; i < uCount; i++)
     {
-        if (atDraws->tIndexBuffer.uIndex != uCurrentIndexBuffer)
+        if (atDraws[i].tIndexBuffer.uIndex != uCurrentIndexBuffer)
         {
-            uCurrentIndexBuffer = atDraws->tIndexBuffer.uIndex;
+            uCurrentIndexBuffer = atDraws[i].tIndexBuffer.uIndex;
             plVulkanBuffer* ptIndexBuffer = &ptDevice->sbtBuffersHot[uCurrentIndexBuffer];
             vkCmdBindIndexBuffer(ptCmdBuffer->tCmdBuffer, ptIndexBuffer->tBuffer, 0, VK_INDEX_TYPE_UINT32);
         }