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switch: fix incorrect window centering (#10)

This commit is contained in:
Cpasjuste 2018-03-30 17:57:41 +02:00 committed by Dave Murphy
parent abf3a5b7ed
commit b2f8a546da
1 changed files with 36 additions and 10 deletions
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46
src/video/switch/SDL_switchvideo.c
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@ -38,6 +38,7 @@ typedef struct
{
SDL_Surface *surface;
int x_offset;
int y_offset;
} SWITCH_WindowData;
static int SWITCH_VideoInit(_THIS);
@ -144,6 +145,26 @@ static void SWITCH_PumpEvents(_THIS)
hidScanInput();
}
static void SWITCH_SetResolution(u32 width, u32 height)
{
u32 x, y, w, h, i;
u32 *fb = (u32 *) gfxGetFramebuffer(&w, &h);
// clear "old" fb
for (i = 0; i < 2; i++) {
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
fb[gfxGetFramebufferDisplayOffset(x, y)] =
(u32) RGBA8_MAXALPHA(0, 0, 0);
}
}
gfxFlushBuffers();
gfxSwapBuffers();
}
gfxConfigureResolution(width, height);
}
static int SWITCH_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
{
int bpp;
@ -168,13 +189,18 @@ static int SWITCH_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *for
float w = SDL_min(SCREEN_WIDTH, SCREEN_WIDTH * scaling);
// calculate x offset, to respect aspect ratio
// round down to multiple of 4 for faster fb writes
int offset = (int) (w - (window->w)) / 2;
data->x_offset = offset & ~3;
gfxConfigureResolution((int) w, window->h);
data->x_offset = ((int) (w - window->w) / 2) & ~3;
data->y_offset = 0;
SWITCH_SetResolution((u32) w, (u32) window->h);
printf("gfxConfigureResolution: %i x %i (window: %i x %i, offset: %i x %i)\n",
(int) w, window->h, window->w, window->h, data->x_offset, data->y_offset);
}
else {
gfxConfigureResolution(0, 0);
data->x_offset = 0;
data->x_offset = ((SCREEN_WIDTH - window->w) / 2) & ~3;
data->y_offset = (SCREEN_HEIGHT - window->h) / 2;
SWITCH_SetResolution(0, 0);
printf("gfxConfigureResolution: %i x %i (window: %i x %i, offset: %i x %i)\n",
1280, 720, window->w, window->h, data->x_offset, data->y_offset);
}
*format = SDL_PIXELFORMAT_ABGR8888;
@ -199,17 +225,17 @@ static int SWITCH_UpdateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_R
u32 *dst = (u32 *) gfxGetFramebuffer(&fb_w, &fb_h);
// prevent fb overflow in case of resolution change outside SDL
if (window->x + w > fb_w) {
w = fb_w - window->x;
if (data->x_offset + w > fb_w) {
w = fb_w - data->x_offset;
}
if (window->y + h > fb_h) {
h = fb_h - window->y;
if (data->y_offset + h > fb_h) {
h = fb_h - data->y_offset;
}
for (y = 0; y < h; y++) {
for (x = 0; x < w; x += 4) {
*((u128 *) &dst[gfxGetFramebufferDisplayOffset(
(u32) (x + window->x + data->x_offset), (u32) (y + window->y))]) =
(u32) (x + data->x_offset), (u32) (y + data->y_offset))]) =
*((u128 *) &src[y * w + x]);
}
}