From cbf2e289b8fbcb887a5479b8740ec557d3b5a167 Mon Sep 17 00:00:00 2001
From: gendlin <108626604+gendlin@users.noreply.github.com>
Date: Wed, 28 Aug 2024 03:54:35 -0400
Subject: [PATCH] Blit directly to texture (#1870)

* Blit directly to texture

* Omit unneeded vars
---
 src/i_video.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/src/i_video.c b/src/i_video.c
index f5232bf6..5d87e8be 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -665,9 +665,12 @@ void I_StartFrame(void)
 
 static void UpdateRender(void)
 {
+    SDL_LockTexture(texture, &blit_rect, &argbbuffer->pixels,
+        &argbbuffer->pitch);
+
     SDL_LowerBlit(screenbuffer, &blit_rect, argbbuffer, &blit_rect);
-    SDL_UpdateTexture(texture, &blit_rect, argbbuffer->pixels,
-                      argbbuffer->pitch);
+
+    SDL_UnlockTexture(texture);
 
     if (letterboxed)
     {
@@ -1814,16 +1817,9 @@ static void CreateSurfaces(int w, int h)
     }
 
     // [FG] create intermediate ARGB frame buffer
-    {
-        uint32_t rmask, gmask, bmask, amask;
-        int bpp;
 
-        SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_ARGB8888, &bpp,
-                                   &rmask, &gmask, &bmask, &amask);
-        argbbuffer =
-            SDL_CreateRGBSurface(0, w, h, bpp, rmask, gmask, bmask, amask);
-        SDL_FillRect(argbbuffer, NULL, 0);
-    }
+    argbbuffer = SDL_CreateRGBSurfaceWithFormatFrom(
+        NULL, w, h, 8, 0, SDL_PIXELFORMAT_ARGB8888);
 
     I_SetPalette(W_CacheLumpName("PLAYPAL", PU_CACHE));