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/*
* Mesa 3-D graphics library
* Version: 6.5.2
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file xm_dd.h
* General device driver functions for Xlib driver.
*/
#include "glxheader.h"
#include "xmesaP.h"
#include "main/imports.h"
#include "main/mtypes.h"
#include "pipe/softpipe/sp_context.h"
#include "state_tracker/st_public.h"
#include "state_tracker/st_context.h"
#include "state_tracker/st_draw.h"
/*
* Dithering kernels and lookup tables.
*/
const int xmesa_kernel8[DITH_DY * DITH_DX] = {
0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC,
12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC,
3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC,
15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC,
};
const int xmesa_kernel1[16] = {
0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */
6*47, 2*47, 14*47, 8*47,
10*47, 1*47, 5*47, 11*47,
7*47, 13*47, 3*47, 15*47
};
static void
finish_or_flush( GLcontext *ctx )
{
#ifdef XFree86Server
/* NOT_NEEDED */
#else
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
if (xmesa) {
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync( xmesa->display, False );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
}
#endif
abort();
}
/**
* Called when the driver should update its state, based on the new_state
* flags.
*/
void
xmesa_update_state( GLcontext *ctx, GLbitfield new_state )
{
#if 0
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
#endif
st_invalidate_state( ctx, new_state );
if (ctx->DrawBuffer->Name != 0)
return;
/*
* GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect
* renderbuffer span/clear funcs.
*/
if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) {
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
struct xmesa_renderbuffer *front_xrb, *back_xrb;
front_xrb = xmbuf->frontxrb;
if (front_xrb) {
#if 0
xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat,
xmesa->xm_visual->BitsPerPixel);
front_xrb->clearFunc = clear_pixmap;
#endif
}
back_xrb = xmbuf->backxrb;
if (back_xrb) {
#if 0
xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat,
xmesa->xm_visual->BitsPerPixel);
if (xmbuf->backxrb->pixmap) {
back_xrb->clearFunc = clear_pixmap;
}
else {
switch (xmesa->xm_visual->BitsPerPixel) {
case 8:
back_xrb->clearFunc = clear_8bit_ximage;
break;
case 16:
back_xrb->clearFunc = clear_16bit_ximage;
break;
case 24:
back_xrb->clearFunc = clear_24bit_ximage;
break;
case 32:
back_xrb->clearFunc = clear_32bit_ximage;
break;
default:
back_xrb->clearFunc = clear_nbit_ximage;
break;
}
}
#endif
}
}
}
/**
* Called by glViewport.
* This is a good time for us to poll the current X window size and adjust
* our renderbuffers to match the current window size.
* Remember, we have no opportunity to respond to conventional
* X Resize/StructureNotify events since the X driver has no event loop.
* Thus, we poll.
* Note that this trick isn't fool-proof. If the application never calls
* glViewport, our notion of the current window size may be incorrect.
* That problem led to the GLX_MESA_resize_buffers extension.
*/
static void
xmesa_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
XMesaContext xmctx = XMESA_CONTEXT(ctx);
XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer);
XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer);
xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf);
xmesa_check_and_update_buffer_size(xmctx, xmreadbuf);
(void) x;
(void) y;
(void) w;
(void) h;
}
/**
* Initialize the device driver function table with the functions
* we implement in this driver.
*/
void
xmesa_init_driver_functions( XMesaVisual xmvisual,
struct dd_function_table *driver )
{
driver->UpdateState = xmesa_update_state;
driver->Flush = finish_or_flush;
driver->Finish = finish_or_flush;
driver->Viewport = xmesa_viewport;
}
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