bool gs_texrender_begin(gs_texrender_t texrender, uint32_t cx, uint32_t cy)
{
if (!texrender || texrender->rendered)
return false;
if (cx == 0)
cx = gs_get_width();
if (cy == 0)
cy = gs_get_height();
assert(cx && cy);
if (!cx || !cy)
return false;
if (texrender->cx != cx || texrender->cy != cy)
if (!texrender_resetbuffer(texrender, cx, cy))
return false;
gs_viewport_push();
gs_projection_push();
gs_matrix_push();
gs_matrix_identity();
texrender->prev_target = gs_get_render_target();
texrender->prev_zs = gs_get_zstencil_target();
gs_set_render_target(texrender->target, texrender->zs);
gs_set_viewport(0, 0, texrender->cx, texrender->cy);
return true;
}
static inline void startRegion(int vX, int vY, int vCX, int vCY, float oL,
float oR, float oT, float oB)
{
gs_projection_push();
gs_viewport_push();
gs_set_viewport(vX, vY, vCX, vCY);
gs_ortho(oL, oR, oT, oB, -100.0f, 100.0f);
}
void OBSProjector::OBSRender(void *data, uint32_t cx, uint32_t cy)
{
OBSProjector *window = reinterpret_cast<OBSProjector*>(data);
uint32_t targetCX;
uint32_t targetCY;
int x, y;
int newCX, newCY;
float scale;
if (window->source) {
targetCX = std::max(obs_source_get_width(window->source), 1u);
targetCY = std::max(obs_source_get_height(window->source), 1u);
} else {
struct obs_video_info ovi;
obs_get_video_info(&ovi);
targetCX = ovi.base_width;
targetCY = ovi.base_height;
}
GetScaleAndCenterPos(targetCX, targetCY, cx, cy, x, y, scale);
newCX = int(scale * float(targetCX));
newCY = int(scale * float(targetCY));
gs_viewport_push();
gs_projection_push();
gs_ortho(0.0f, float(targetCX), 0.0f, float(targetCY), -100.0f, 100.0f);
gs_set_viewport(x, y, newCX, newCY);
if (window->source)
obs_source_video_render(window->source);
else
obs_render_main_view();
gs_projection_pop();
gs_viewport_pop();
}
