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glgsg: Fix get_screenshot() for multisample FBOs

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An FM_refresh bind should not bind the multisample FBO, but the resolved one (and while we're at it, FM_refresh should not try to resolve multisamples).
This commit is contained in:
rdb 2021-03-05 11:57:05 +01:00
parent 1851cc35bc
commit 5cadd86d1e
1 changed files with 8 additions and 1 deletions
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9
panda/src/glstuff/glGraphicsBuffer_src.cxx
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@ -283,6 +283,12 @@ begin_frame(FrameMode mode, Thread *current_thread) {
} else if (mode == FM_refresh) {
// Just bind the FBO.
rebuild_bitplanes();
// Bind the non-multisample FBO, since we won't be rendering anything and
// the caller probably wanted to grab a screenshot.
if (_fbo_multisample != 0 && !_fbo.empty()) {
glgsg->bind_fbo(_fbo[0]);
}
}
// The host window may not have had sRGB enabled, so we need to do this.
@ -1330,11 +1336,12 @@ end_frame(FrameMode mode, Thread *current_thread) {
nassertv(_gsg != nullptr);
// Resolve Multisample rendering if using it.
if (_requested_multisamples && _fbo_multisample) {
if (_requested_multisamples && _fbo_multisample && mode != FM_refresh) {
resolve_multisamples();
}
if (mode == FM_render) {
// Should happen *after* resolving multisamples, with the non-MS FBO bound.
copy_to_textures();
}