Implement functions on D3D12

src/gpu/d3d12/SDL_gpu_d3d12.c

@@ -7148,7 +7148,8 @@ static bool D3D12_WaitForSwapchain(
     return true;
 }
 
-static bool D3D12_AcquireSwapchainTexture(
+static bool D3D12_INTERNAL_AcquireSwapchainTexture(
+    bool block,
     SDL_GPUCommandBuffer *commandBuffer,
     SDL_Window *window,
     SDL_GPUTexture **swapchainTexture,
@@ -7188,7 +7189,7 @@ static bool D3D12_AcquireSwapchainTexture(
     }
 
     if (windowData->inFlightFences[windowData->frameCounter] != NULL) {
-        if (windowData->present_mode == SDL_GPU_PRESENTMODE_VSYNC) {
+        if (block) {
             // In VSYNC mode, block until the least recent presented frame is done
             if (!D3D12_WaitForFences(
                 (SDL_GPURenderer *)renderer,
@@ -7198,13 +7199,11 @@ static bool D3D12_AcquireSwapchainTexture(
                 return false;
             }
         } else {
+            // If we are not blocking and the least recent fence is not signaled,
+            // return true to indicate that there is no error but rendering should be skipped.
             if (!D3D12_QueryFence(
                     (SDL_GPURenderer *)renderer,
                     windowData->inFlightFences[windowData->frameCounter])) {
-                /*
-                 * In MAILBOX or IMMEDIATE mode, if the least recent fence is not signaled,
-                 * return true to indicate that there is no error but rendering should be skipped
-                 */
                 return true;
             }
         }
@@ -7262,6 +7261,38 @@ static bool D3D12_AcquireSwapchainTexture(
     return true;
 }
 
+static bool D3D12_AcquireSwapchainTexture(
+    SDL_GPUCommandBuffer *command_buffer,
+    SDL_Window *window,
+    SDL_GPUTexture **swapchain_texture,
+    Uint32 *swapchain_texture_width,
+    Uint32 *swapchain_texture_height
+) {
+    return D3D12_INTERNAL_AcquireSwapchainTexture(
+        false,
+        command_buffer,
+        window,
+        swapchain_texture,
+        swapchain_texture_width,
+        swapchain_texture_height);
+}
+
+static bool D3D12_WaitAndAcquireSwapchainTexture(
+    SDL_GPUCommandBuffer *command_buffer,
+    SDL_Window *window,
+    SDL_GPUTexture **swapchain_texture,
+    Uint32 *swapchain_texture_width,
+    Uint32 *swapchain_texture_height
+) {
+    return D3D12_INTERNAL_AcquireSwapchainTexture(
+        true,
+        command_buffer,
+        window,
+        swapchain_texture,
+        swapchain_texture_width,
+        swapchain_texture_height);
+}
+
 static void D3D12_INTERNAL_PerformPendingDestroys(D3D12Renderer *renderer)
 {
     SDL_LockMutex(renderer->disposeLock);