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Fixed black target screen during wipe (legacy renderer only) 

Credits: NiTROACTiVE and Erick194
https://www.doomworld.com/vb/source-ports/93179-two-issues-im-having-with-gzdoom-v2-3-2/
This commit is contained in:
alexey.lysiuk 2017-03-05 20:51:48 +02:00
parent 8400961a00
commit f9e543bed3
1 changed files with 11 additions and 2 deletions
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13
src/gl/system/gl_wipe.cpp
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@ -143,17 +143,26 @@ bool OpenGLFrameBuffer::WipeStartScreen(int type)
glFinish();
wipestartscreen->Bind(0, false, false);
const auto copyPixels = [&viewport]()
{
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, viewport.left, viewport.top, viewport.width, viewport.height);
};
if (FGLRenderBuffers::IsEnabled())
{
GLRenderer->mBuffers->BindCurrentFB();
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, viewport.left, viewport.top, viewport.width, viewport.height);
copyPixels();
}
else if (gl.legacyMode)
{
copyPixels();
}
else
{
GLint readbuffer = 0;
glGetIntegerv(GL_READ_BUFFER, &readbuffer);
glReadBuffer(GL_FRONT);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, viewport.left, viewport.top, viewport.width, viewport.height);
copyPixels();
glReadBuffer(readbuffer);
}