pandory500/SDL-mirror
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fixed clip rectangle calculation when there is a viewport offset

Browse source
This commit is contained in:
Sam Lantinga 2015-05-28 18:57:10 -07:00
parent 2a4efa3b11
commit d727fa668a
5 changed files with 57 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/render/opengl/SDL_render_gl.c
View file

@ -1046,7 +1046,14 @@ GL_UpdateClipRect(SDL_Renderer * renderer)
if (renderer->clipping_enabled) {
const SDL_Rect *rect = &renderer->clip_rect;
data->glEnable(GL_SCISSOR_TEST);
data->glScissor(rect->x, renderer->viewport.h - rect->y - rect->h, rect->w, rect->h);
if (renderer->target) {
data->glScissor(renderer->viewport.x + rect->x, renderer->viewport.y + rect->y, rect->w, rect->h);
} else {
int w, h;
SDL_GetRendererOutputSize(renderer, &w, &h);
data->glScissor(renderer->viewport.x + rect->x, (h - renderer->viewport.y - renderer->viewport.h) + rect->y, rect->w, rect->h);
}
} else {
data->glDisable(GL_SCISSOR_TEST);
}