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wiiu/render: Implement SDL_LockTexture and SDL_UnlockTexture

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Ash 2018-10-16 15:44:19 +11:00 committed by Ash Logan
parent a01adf4e00
commit 084e2b9efb
1 changed files with 27 additions and 0 deletions
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27
src/render/wiiu/SDL_rtexture_wiiu.c
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@ -65,6 +65,33 @@ WIIU_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
return 0;
}
// Somewhat adapted from SDL_render.c: SDL_LockTextureNative
// The app basically wants a pointer to a particular rectangle as well as
// write access to it. We can do that without any special graphics code
static int WIIU_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, void **pixels, int *pitch)
{
GX2Texture *wiiu_tex = (GX2Texture *) texture->driverdata;
// Calculate pointer to first pixel in rect
*pixels = (void *) ((Uint8 *) wiiu_tex->surface.image +
rect->y * wiiu_tex->surface.pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = wiiu_tex->surface.pitch;
// Not sure we even need to bother keeping track of this
texture->locked_rect = *rect;
return 0;
}
static void WIIU_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
GX2Texture *wiiu_tex = (GX2Texture *) texture->driverdata;
// TODO check this is actually needed
GX2Invalidate(GX2_INVALIDATE_MODE_CPU | GX2_INVALIDATE_MODE_TEXTURE,
wiiu_tex->surface.image, wiiu_tex->surface.imageSize);
}
static Uint32
TextureNextPow2(Uint32 w)
{