SDL: fix PSP texure artifacts

From 0b7b0977fc53c0c6d50fde707f4f8b50479ea521 Mon Sep 17 00:00:00 2001
From: stdgregwar <[EMAIL REDACTED]>
Date: Sun, 27 Dec 2020 17:51:39 +0100
Subject: [PATCH] fix PSP texure artifacts

---
 src/render/psp/SDL_render_psp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/render/psp/SDL_render_psp.c b/src/render/psp/SDL_render_psp.c
index 124ede3e92a..f4fbd2c13ff 100644
--- a/src/render/psp/SDL_render_psp.c
+++ b/src/render/psp/SDL_render_psp.c
@@ -259,6 +259,7 @@ TextureSwizzle(PSP_TextureData *psp_texture)
     psp_texture->data = data;
     psp_texture->swizzled = SDL_TRUE;
 
+    sceKernelDcacheWritebackRange(psp_texture->data, psp_texture->size);
     return 1;
 }
 int TextureUnswizzle(PSP_TextureData *psp_texture)
@@ -291,8 +292,6 @@ int TextureUnswizzle(PSP_TextureData *psp_texture)
     if(!data)
         return 0;
 
-    sceKernelDcacheWritebackAll();
-
     ydst = (unsigned char *)data;
 
     for(blocky = 0; blocky < heightblocks; ++blocky)
@@ -326,6 +325,7 @@ int TextureUnswizzle(PSP_TextureData *psp_texture)
 
     psp_texture->swizzled = SDL_FALSE;
 
+    sceKernelDcacheWritebackRange(psp_texture->data, psp_texture->size);
     return 1;
 }