/*
* Bind buffer b to context c and make c the current rendering context.
*/
PUBLIC
GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
XMesaBuffer readBuffer )
{
if (c) {
if (!drawBuffer || !readBuffer)
return GL_FALSE; /* must specify buffers! */
if (&(c->mesa) == _mesa_get_current_context()
&& c->mesa.DrawBuffer == &drawBuffer->mesa_buffer
&& c->mesa.ReadBuffer == &readBuffer->mesa_buffer
&& XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) {
/* same context and buffer, do nothing */
return GL_TRUE;
}
c->xm_buffer = drawBuffer;
/* Call this periodically to detect when the user has begun using
* GL rendering from multiple threads.
*/
_glapi_check_multithread();
xmesa_check_and_update_buffer_size(c, drawBuffer);
if (readBuffer != drawBuffer)
xmesa_check_and_update_buffer_size(c, readBuffer);
_mesa_make_current(&(c->mesa),
&drawBuffer->mesa_buffer,
&readBuffer->mesa_buffer);
/*
* Must recompute and set these pixel values because colormap
* can be different for different windows.
*/
c->clearpixel = xmesa_color_to_pixel( &c->mesa,
c->clearcolor[0],
c->clearcolor[1],
c->clearcolor[2],
c->clearcolor[3],
c->xm_visual->undithered_pf);
XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel);
/* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */
drawBuffer->wasCurrent = GL_TRUE;
}
else {
/* Detach */
_mesa_make_current( NULL, NULL, NULL );
}
return GL_TRUE;
}
/*
* This is typically called when the window size changes and we need
* to reallocate the buffer's back/depth/stencil/accum buffers.
*/
PUBLIC void
XMesaResizeBuffers( XMesaBuffer b )
{
GET_CURRENT_CONTEXT(ctx);
XMesaContext xmctx = XMESA_CONTEXT(ctx);
if (!xmctx)
return;
xmesa_check_and_update_buffer_size(xmctx, b);
}
static void
xm_flush_frontbuffer(struct pipe_winsys *pws,
struct pipe_surface *surf,
void *context_private)
{
/*
* The front color buffer is actually just another XImage buffer.
* This function copies that XImage to the actual X Window.
*/
XMesaContext xmctx = (XMesaContext) context_private;
xlib_softpipe_display_surface(xmctx->xm_buffer, surf);
xmesa_check_and_update_buffer_size(xmctx, xmctx->xm_buffer);
}
