Fixed bug 4991 - Pixel shader problem when recreating a texture for direct3d renderer

cmediaplayer

Hi, i already mentioned in the SDL discourse a bug that recreating of a texture occours pixel shader problem on direct3d renderer. There is no problem for direct3d11. You can see the issue by using my app named C Media Player which is available for Windows for free using my web site www.cmediaplayer.com. Just follow the steps:

*Open a media file
*When playing the file change the scale quality under the video menu.
*You will see the problem.

src/render/direct3d/SDL_render_d3d.c

@@ -712,6 +712,7 @@ D3D_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
         texturedata->texture.dirty = SDL_TRUE;
         if (data->drawstate.texture == texture) {
             data->drawstate.texture = NULL;
+            data->drawstate.shader = NULL;
             IDirect3DDevice9_SetPixelShader(data->device, NULL);
             IDirect3DDevice9_SetTexture(data->device, 0, NULL);
             if (texturedata->yuv) {
@@ -1531,6 +1532,7 @@ D3D_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
 
     if (renderdata->drawstate.texture == texture) {
         renderdata->drawstate.texture = NULL;
+        renderdata->drawstate.shader = NULL;
         IDirect3DDevice9_SetPixelShader(renderdata->device, NULL);
         IDirect3DDevice9_SetTexture(renderdata->device, 0, NULL);
         if (data->yuv) {