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Vita Render: Limit the scope of cliprect to viewport 

Don't allow cliprect be larger than viewport's scope
This commit is contained in:
Wohlstand 2025-06-11 18:22:10 +03:00 committed by Sam Lantinga
parent 1c09a7117a
commit 6701f938f7
1 changed files with 35 additions and 2 deletions
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37
src/render/vitagxm/SDL_render_vita_gxm.c
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@ -826,6 +826,35 @@ static int VITA_GXM_RenderClear(SDL_Renderer *renderer, SDL_RenderCommand *cmd)
return 0;
}
static void ClampCliprectToViewport(SDL_Rect *clip, const SDL_Rect *viewport)
{
int max_x_v, max_y_v, max_x_c, max_y_c;
if (clip->x < 0) {
clip->w += clip->x;
clip->x = 0;
}
if (clip->y < 0) {
clip->h += clip->y;
clip->y = 0;
}
max_x_c = clip->x + clip->w;
max_y_c = clip->y + clip->h;
max_x_v = viewport->x + viewport->w;
max_y_v = viewport->y + viewport->h;
if (max_x_c > max_x_v) {
clip->w -= (max_x_v - max_x_c);
}
if (max_y_c > max_y_v) {
clip->h -= (max_y_v - max_y_c);
}
}
static int SetDrawState(VITA_GXM_RenderData *data, const SDL_RenderCommand *cmd)
{
SDL_Texture *texture = cmd->data.draw.texture;
@ -869,8 +898,12 @@ static int SetDrawState(VITA_GXM_RenderData *data, const SDL_RenderCommand *cmd)
}
if ((data->drawstate.cliprect_enabled || data->drawstate.viewport_is_set) && data->drawstate.cliprect_dirty) {
const SDL_Rect *rect = &data->drawstate.cliprect;
set_clip_rectangle(data, rect->x, rect->y, rect->x + rect->w, rect->y + rect->h);
SDL_Rect rect;
SDL_copyp(&rect, &data->drawstate.cliprect);
if (data->drawstate.viewport_is_set) {
ClampCliprectToViewport(&rect, &data->drawstate.viewport);
}
set_clip_rectangle(data, rect.x, rect.y, rect.x + rect.w, rect.y + rect.h);
data->drawstate.cliprect_dirty = SDL_FALSE;
}