void PlatformResizeGLContext( FPlatformOpenGLDevice* Device, FPlatformOpenGLContext* Context, uint32 SizeX, uint32 SizeY, bool bFullscreen, bool bWasFullscreen, GLenum BackBufferTarget, GLuint BackBufferResource)
{
check(Context);
glViewport(0, 0, SizeX, SizeY);
VERIFY_GL(glViewport);
}
void PlatformResizeGLContext( FPlatformOpenGLDevice* Device, FPlatformOpenGLContext* Context, uint32 SizeX, uint32 SizeY, bool bFullscreen, bool bWasFullscreen, GLenum BackBufferTarget, GLuint BackBufferResource)
{
check(Context);
FScopeContext ScopeContext(Context);
if (FOpenGL::IsES2())
{
glViewport(0, 0, SizeX, SizeY);
VERIFY_GL(glViewport);
}
else
{
if (Context->ViewportFramebuffer == 0)
{
glGenFramebuffers(1, &Context->ViewportFramebuffer);
}
glBindFramebuffer(GL_FRAMEBUFFER, Context->ViewportFramebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, BackBufferTarget, BackBufferResource, 0);
#if UE_BUILD_DEBUG
glReadBuffer(GL_COLOR_ATTACHMENT0);
FOpenGL::DrawBuffer(GL_COLOR_ATTACHMENT0);
GLenum CompleteResult = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (CompleteResult != GL_FRAMEBUFFER_COMPLETE)
{
UE_LOG(LogRHI, Fatal, TEXT("PlatformResizeGLContext: Framebuffer not complete. Status = 0x%x"), CompleteResult);
}
#endif
glViewport(0, 0, SizeX, SizeY);
static GLfloat ZeroColor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
glClearBufferfv(GL_COLOR, 0, ZeroColor);
}
}