SDL: Sync SDL3 wiki -> header (dea99)

From dea99e54fd1af6e1b497341775d4b98ca899c3c1 Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Sun, 16 Feb 2025 17:44:58 +0000
Subject: [PATCH] Sync SDL3 wiki -> header

[ci skip]
---
 include/SDL3/SDL_gpu.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/SDL3/SDL_gpu.h b/include/SDL3/SDL_gpu.h
index 87c44c8b6f629..dd4238e521bba 100644
--- a/include/SDL3/SDL_gpu.h
+++ b/include/SDL3/SDL_gpu.h
@@ -3926,6 +3926,9 @@ extern SDL_DECLSPEC bool SDLCALL SDL_WaitForGPUSwapchain(
  * freed by the user. You MUST NOT call this function from any thread other
  * than the one that created the window.
  *
+ * The swapchain texture is write-only and cannot be used as a sampler or for
+ * another reading operation.
+ *
  * \param command_buffer a command buffer.
  * \param window a window that has been claimed.
  * \param swapchain_texture a pointer filled in with a swapchain texture
@@ -3944,6 +3947,7 @@ extern SDL_DECLSPEC bool SDLCALL SDL_WaitForGPUSwapchain(
  *
  * \sa SDL_SubmitGPUCommandBuffer
  * \sa SDL_SubmitGPUCommandBufferAndAcquireFence
+ * \sa SDL_AcquireGPUSwapchainTexture
  */
 extern SDL_DECLSPEC bool SDLCALL SDL_WaitAndAcquireGPUSwapchainTexture(
     SDL_GPUCommandBuffer *command_buffer,