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cliprect example: allow the clipping rectangle to extend outside the destination

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Sam Lantinga
2025-09-07 19:34:27 -07:00
parent bb557f1077
commit 9d6fb509fe
1 changed files with 8 additions and 8 deletions
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16
examples/renderer/15-cliprect/cliprect.c
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@@ -93,20 +93,20 @@ SDL_AppResult SDL_AppIterate(void *appstate)
/* Set a new clipping rectangle position */
cliprect_position.x += distance * cliprect_direction.x;
if (cliprect_position.x < 0.0f) {
cliprect_position.x = 0.0f;
if (cliprect_position.x < -CLIPRECT_SIZE) {
cliprect_position.x = -CLIPRECT_SIZE;
cliprect_direction.x = 1.0f;
} else if (cliprect_position.x >= (WINDOW_WIDTH - CLIPRECT_SIZE)) {
cliprect_position.x = (WINDOW_WIDTH - CLIPRECT_SIZE) - 1;
} else if (cliprect_position.x >= WINDOW_WIDTH) {
cliprect_position.x = WINDOW_WIDTH - 1;
cliprect_direction.x = -1.0f;
}
cliprect_position.y += distance * cliprect_direction.y;
if (cliprect_position.y < 0.0f) {
cliprect_position.y = 0.0f;
if (cliprect_position.y < -CLIPRECT_SIZE) {
cliprect_position.y = -CLIPRECT_SIZE;
cliprect_direction.y = 1.0f;
} else if (cliprect_position.y >= (WINDOW_HEIGHT - CLIPRECT_SIZE)) {
cliprect_position.y = (WINDOW_HEIGHT - CLIPRECT_SIZE) - 1;
} else if (cliprect_position.y >= WINDOW_HEIGHT) {
cliprect_position.y = WINDOW_HEIGHT - 1;
cliprect_direction.y = -1.0f;
}
SDL_SetRenderClipRect(renderer, &cliprect);