922 lines
29 KiB
C
922 lines
29 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file xm_dd.h
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* General device driver functions for Xlib driver.
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*/
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#include "glxheader.h"
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#include "main/bufferobj.h"
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#include "main/context.h"
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#include "main/colormac.h"
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#include "main/fbobject.h"
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#include "main/framebuffer.h"
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#include "main/macros.h"
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#include "main/mipmap.h"
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#include "main/image.h"
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#include "main/mtypes.h"
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#include "main/pbo.h"
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#include "main/texformat.h"
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#include "swrast/swrast.h"
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#include "swrast/s_context.h"
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#include "swrast_setup/swrast_setup.h"
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#include "tnl/tnl.h"
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#include "tnl/t_context.h"
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#include "drivers/common/meta.h"
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#include "xmesaP.h"
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#include "util/u_memory.h"
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static void
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finish(struct gl_context *ctx)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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if (xmesa) {
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mtx_lock(&_xmesa_lock);
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XSync( xmesa->display, False );
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mtx_unlock(&_xmesa_lock);
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}
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}
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static void
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flush(struct gl_context *ctx, unsigned gallium_flush_flags)
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{
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finish(ctx);
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}
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/* Implements glColorMask() */
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static void
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color_mask(struct gl_context *ctx,
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GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaBuffer xmbuf;
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const int xclass = xmesa->xm_visual->visualType;
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(void) amask;
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if (_mesa_is_user_fbo(ctx->DrawBuffer))
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return;
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xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
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if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
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unsigned long m;
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if (rmask && gmask && bmask) {
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m = ((unsigned long)~0L);
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}
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else {
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m = 0;
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if (rmask) m |= GET_REDMASK(xmesa->xm_visual);
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if (gmask) m |= GET_GREENMASK(xmesa->xm_visual);
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if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual);
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}
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XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m );
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}
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}
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/**********************************************************************/
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/*** glClear implementations ***/
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/**********************************************************************/
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/**
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* Clear the front or back color buffer, if it's implemented with a pixmap.
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*/
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static void
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clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
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GLint x, GLint y, GLint width, GLint height)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
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assert(xmbuf);
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assert(xrb->pixmap);
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assert(xmesa);
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assert(xmesa->display);
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assert(xrb->pixmap);
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assert(xmbuf->cleargc);
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XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc,
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x, xrb->Base.Base.Height - y - height,
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width, height );
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}
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static void
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clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
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GLint x, GLint y, GLint width, GLint height)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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GLuint pixel = (GLuint) xmesa->clearpixel;
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GLint i, j;
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if (xmesa->swapbytes) {
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pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00);
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}
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for (j = 0; j < height; j++) {
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GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j);
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for (i = 0; i < width; i++) {
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ptr2[i] = pixel;
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}
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}
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}
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/* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
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static void
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clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
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GLint x, GLint y, GLint width, GLint height)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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const GLubyte r = xmesa->clearcolor[0];
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const GLubyte g = xmesa->clearcolor[1];
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const GLubyte b = xmesa->clearcolor[2];
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if (r == g && g == b) {
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/* same value for all three components (gray) */
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GLint j;
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for (j = 0; j < height; j++) {
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bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
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memset(ptr3, r, 3 * width);
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}
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}
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else {
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/* non-gray clear color */
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GLint i, j;
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for (j = 0; j < height; j++) {
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bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
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for (i = 0; i < width; i++) {
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ptr3->r = r;
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ptr3->g = g;
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ptr3->b = b;
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ptr3++;
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}
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}
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}
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}
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static void
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clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
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GLint x, GLint y, GLint width, GLint height)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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register GLuint pixel = (GLuint) xmesa->clearpixel;
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if (!xrb->ximage)
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return;
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if (xmesa->swapbytes) {
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pixel = ((pixel >> 24) & 0x000000ff)
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| ((pixel >> 8) & 0x0000ff00)
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| ((pixel << 8) & 0x00ff0000)
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| ((pixel << 24) & 0xff000000);
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}
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if (width == xrb->Base.Base.Width && height == xrb->Base.Base.Height) {
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/* clearing whole buffer */
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const GLuint n = xrb->Base.Base.Width * xrb->Base.Base.Height;
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GLuint *ptr4 = (GLuint *) xrb->ximage->data;
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if (pixel == 0) {
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/* common case */
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memset(ptr4, pixel, 4 * n);
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}
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else {
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GLuint i;
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for (i = 0; i < n; i++)
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ptr4[i] = pixel;
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}
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}
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else {
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/* clearing scissored region */
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GLint i, j;
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for (j = 0; j < height; j++) {
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GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j);
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for (i = 0; i < width; i++) {
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ptr4[i] = pixel;
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}
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}
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}
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}
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static void
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clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
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GLint x, GLint y, GLint width, GLint height)
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{
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaImage *img = xrb->ximage;
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GLint i, j;
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/* TODO: optimize this */
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y = YFLIP(xrb, y);
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for (j = 0; j < height; j++) {
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for (i = 0; i < width; i++) {
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XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel);
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}
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}
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}
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static void
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clear_buffers(struct gl_context *ctx, GLbitfield buffers)
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{
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if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
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/* this is a window system framebuffer */
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer);
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const GLint x = ctx->DrawBuffer->_Xmin;
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const GLint y = ctx->DrawBuffer->_Ymin;
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const GLint width = ctx->DrawBuffer->_Xmax - x;
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const GLint height = ctx->DrawBuffer->_Ymax - y;
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_mesa_unclamped_float_rgba_to_ubyte(xmesa->clearcolor,
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ctx->Color.ClearColor.f);
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xmesa->clearpixel = xmesa_color_to_pixel(ctx,
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xmesa->clearcolor[0],
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xmesa->clearcolor[1],
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xmesa->clearcolor[2],
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xmesa->clearcolor[3],
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xmesa->xm_visual->undithered_pf);
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XMesaSetForeground(xmesa->display, b->cleargc, xmesa->clearpixel);
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/* we can't handle color or index masking */
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if (GET_COLORMASK(ctx->Color.ColorMask, 0) == 0xf &&
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ctx->Color.IndexMask == 0xffffffff) {
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if (buffers & BUFFER_BIT_FRONT_LEFT) {
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/* clear front color buffer */
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struct gl_renderbuffer *frontRb
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= ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
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if (b->frontxrb == xmesa_renderbuffer(frontRb)) {
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/* renderbuffer is not wrapped - great! */
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b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height);
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buffers &= ~BUFFER_BIT_FRONT_LEFT;
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}
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else {
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/* we can't directly clear an alpha-wrapped color buffer */
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}
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}
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if (buffers & BUFFER_BIT_BACK_LEFT) {
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/* clear back color buffer */
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struct gl_renderbuffer *backRb
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= ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
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if (b->backxrb == xmesa_renderbuffer(backRb)) {
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/* renderbuffer is not wrapped - great! */
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b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height);
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buffers &= ~BUFFER_BIT_BACK_LEFT;
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}
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}
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}
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}
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if (buffers)
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_swrast_Clear(ctx, buffers);
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}
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/* XXX these functions haven't been tested in the Xserver environment */
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/**
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* Check if we can do an optimized glDrawPixels into an 8R8G8B visual.
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*/
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static GLboolean
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can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type)
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{
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if (format == GL_BGRA &&
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type == GL_UNSIGNED_BYTE &&
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ctx->DrawBuffer &&
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_mesa_is_winsys_fbo(ctx->DrawBuffer) &&
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ctx->Pixel.ZoomX == 1.0 && /* no zooming */
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ctx->Pixel.ZoomY == 1.0 &&
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ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) {
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const SWcontext *swrast = SWRAST_CONTEXT(ctx);
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if (swrast->NewState)
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_swrast_validate_derived( ctx );
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if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
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struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
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if (rb) {
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struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb);
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if (xrb &&
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xrb->pixmap && /* drawing to pixmap or window */
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_mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) {
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return GL_TRUE;
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}
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}
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}
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}
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return GL_FALSE;
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}
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/**
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* This function implements glDrawPixels() with an XPutImage call when
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* drawing to the front buffer (X Window drawable).
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* The image format must be GL_BGRA to match the PF_8R8G8B pixel format.
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*/
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static void
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xmesa_DrawPixels_8R8G8B( struct gl_context *ctx,
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GLint x, GLint y, GLsizei width, GLsizei height,
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GLenum format, GLenum type,
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const struct gl_pixelstore_attrib *unpack,
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const GLvoid *pixels )
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{
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if (can_do_DrawPixels_8R8G8B(ctx, format, type)) {
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const SWcontext *swrast = SWRAST_CONTEXT( ctx );
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struct gl_pixelstore_attrib clippedUnpack = *unpack;
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int dstX = x;
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int dstY = y;
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int w = width;
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int h = height;
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if (swrast->NewState)
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_swrast_validate_derived( ctx );
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if (unpack->BufferObj) {
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/* unpack from PBO */
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GLubyte *buf;
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if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
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format, type, INT_MAX, pixels)) {
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_mesa_error(ctx, GL_INVALID_OPERATION,
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"glDrawPixels(invalid PBO access)");
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return;
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}
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buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0,
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unpack->BufferObj->Size,
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GL_MAP_READ_BIT,
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unpack->BufferObj,
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MAP_INTERNAL);
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if (!buf) {
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return; /* error */
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}
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pixels = ADD_POINTERS(buf, pixels);
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}
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if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
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const XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaDisplay *dpy = xmesa->xm_visual->display;
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XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
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const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
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struct xmesa_renderbuffer *xrb
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= xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
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const int srcX = clippedUnpack.SkipPixels;
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const int srcY = clippedUnpack.SkipRows;
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const int rowLength = clippedUnpack.RowLength;
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XMesaImage ximage;
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assert(xmesa->xm_visual->dithered_pf == PF_8R8G8B);
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assert(xmesa->xm_visual->undithered_pf == PF_8R8G8B);
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assert(dpy);
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assert(gc);
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/* This is a little tricky since all coordinates up to now have
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* been in the OpenGL bottom-to-top orientation. X is top-to-bottom
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* so we have to carefully compute the Y coordinates/addresses here.
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*/
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memset(&ximage, 0, sizeof(XMesaImage));
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ximage.width = width;
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ximage.height = height;
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ximage.format = ZPixmap;
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ximage.data = (char *) pixels
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+ ((srcY + h - 1) * rowLength + srcX) * 4;
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ximage.byte_order = LSBFirst;
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ximage.bitmap_unit = 32;
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ximage.bitmap_bit_order = LSBFirst;
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ximage.bitmap_pad = 32;
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ximage.depth = 32;
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ximage.bits_per_pixel = 32;
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ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */
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/* it seems we don't need to set the ximage.red/green/blue_mask fields */
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/* flip Y axis for dest position */
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dstY = YFLIP(xrb, dstY) - h + 1;
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XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
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}
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if (unpack->BufferObj) {
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ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL);
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}
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}
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else {
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/* software fallback */
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_swrast_DrawPixels(ctx, x, y, width, height,
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format, type, unpack, pixels);
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}
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}
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|
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/**
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* Check if we can do an optimized glDrawPixels into an 5R6G5B visual.
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*/
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static GLboolean
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can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type)
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{
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if (format == GL_RGB &&
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type == GL_UNSIGNED_SHORT_5_6_5 &&
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!ctx->Color.DitherFlag && /* no dithering */
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ctx->DrawBuffer &&
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_mesa_is_winsys_fbo(ctx->DrawBuffer) &&
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ctx->Pixel.ZoomX == 1.0 && /* no zooming */
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ctx->Pixel.ZoomY == 1.0 &&
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ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) {
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const SWcontext *swrast = SWRAST_CONTEXT(ctx);
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|
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if (swrast->NewState)
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_swrast_validate_derived( ctx );
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|
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if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
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struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
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if (rb) {
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struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb);
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if (xrb &&
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xrb->pixmap && /* drawing to pixmap or window */
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_mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) {
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return GL_TRUE;
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}
|
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}
|
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}
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}
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return GL_FALSE;
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}
|
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|
|
|
|
/**
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* This function implements glDrawPixels() with an XPutImage call when
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* drawing to the front buffer (X Window drawable). The image format
|
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* must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to
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* match the PF_5R6G5B pixel format.
|
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*/
|
|
static void
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xmesa_DrawPixels_5R6G5B( struct gl_context *ctx,
|
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GLint x, GLint y, GLsizei width, GLsizei height,
|
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GLenum format, GLenum type,
|
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const struct gl_pixelstore_attrib *unpack,
|
|
const GLvoid *pixels )
|
|
{
|
|
if (can_do_DrawPixels_5R6G5B(ctx, format, type)) {
|
|
const SWcontext *swrast = SWRAST_CONTEXT( ctx );
|
|
struct gl_pixelstore_attrib clippedUnpack = *unpack;
|
|
int dstX = x;
|
|
int dstY = y;
|
|
int w = width;
|
|
int h = height;
|
|
|
|
if (swrast->NewState)
|
|
_swrast_validate_derived( ctx );
|
|
|
|
if (unpack->BufferObj) {
|
|
/* unpack from PBO */
|
|
GLubyte *buf;
|
|
if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
|
|
format, type, INT_MAX, pixels)) {
|
|
_mesa_error(ctx, GL_INVALID_OPERATION,
|
|
"glDrawPixels(invalid PBO access)");
|
|
return;
|
|
}
|
|
buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0,
|
|
unpack->BufferObj->Size,
|
|
GL_MAP_READ_BIT,
|
|
unpack->BufferObj,
|
|
MAP_INTERNAL);
|
|
if (!buf) {
|
|
return; /* error */
|
|
}
|
|
pixels = ADD_POINTERS(buf, pixels);
|
|
}
|
|
|
|
if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
|
|
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
|
|
XMesaDisplay *dpy = xmesa->xm_visual->display;
|
|
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
|
|
const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
|
|
struct xmesa_renderbuffer *xrb
|
|
= xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
const int srcX = clippedUnpack.SkipPixels;
|
|
const int srcY = clippedUnpack.SkipRows;
|
|
const int rowLength = clippedUnpack.RowLength;
|
|
XMesaImage ximage;
|
|
|
|
assert(xmesa->xm_visual->undithered_pf == PF_5R6G5B);
|
|
assert(dpy);
|
|
assert(gc);
|
|
|
|
/* This is a little tricky since all coordinates up to now have
|
|
* been in the OpenGL bottom-to-top orientation. X is top-to-bottom
|
|
* so we have to carefully compute the Y coordinates/addresses here.
|
|
*/
|
|
memset(&ximage, 0, sizeof(XMesaImage));
|
|
ximage.width = width;
|
|
ximage.height = height;
|
|
ximage.format = ZPixmap;
|
|
ximage.data = (char *) pixels
|
|
+ ((srcY + h - 1) * rowLength + srcX) * 2;
|
|
ximage.byte_order = LSBFirst;
|
|
ximage.bitmap_unit = 16;
|
|
ximage.bitmap_bit_order = LSBFirst;
|
|
ximage.bitmap_pad = 16;
|
|
ximage.depth = 16;
|
|
ximage.bits_per_pixel = 16;
|
|
ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */
|
|
/* it seems we don't need to set the ximage.red/green/blue_mask fields */
|
|
/* flip Y axis for dest position */
|
|
dstY = YFLIP(xrb, dstY) - h + 1;
|
|
XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
|
|
}
|
|
|
|
if (unpack->BufferObj) {
|
|
ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL);
|
|
}
|
|
}
|
|
else {
|
|
/* software fallback */
|
|
_swrast_DrawPixels(ctx, x, y, width, height,
|
|
format, type, unpack, pixels);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine if we can do an optimized glCopyPixels.
|
|
*/
|
|
static GLboolean
|
|
can_do_CopyPixels(struct gl_context *ctx, GLenum type)
|
|
{
|
|
if (type == GL_COLOR &&
|
|
ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */
|
|
ctx->Pixel.ZoomX == 1.0 && /* no zooming */
|
|
ctx->Pixel.ZoomY == 1.0 &&
|
|
ctx->Color.DrawBuffer[0] == GL_FRONT && /* copy to front buf */
|
|
ctx->Pixel.ReadBuffer == GL_FRONT && /* copy from front buf */
|
|
ctx->ReadBuffer->_ColorReadBuffer &&
|
|
ctx->DrawBuffer->_ColorDrawBuffers[0]) {
|
|
const SWcontext *swrast = SWRAST_CONTEXT( ctx );
|
|
|
|
if (swrast->NewState)
|
|
_swrast_validate_derived( ctx );
|
|
|
|
if ((swrast->_RasterMask & ~CLIP_BIT) == 0x0 &&
|
|
ctx->ReadBuffer &&
|
|
ctx->ReadBuffer->_ColorReadBuffer &&
|
|
ctx->DrawBuffer &&
|
|
ctx->DrawBuffer->_ColorDrawBuffers[0]) {
|
|
struct xmesa_renderbuffer *srcXrb
|
|
= xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
|
|
struct xmesa_renderbuffer *dstXrb
|
|
= xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
if (srcXrb->pixmap && dstXrb->pixmap) {
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
return GL_FALSE;
|
|
}
|
|
|
|
|
|
/**
|
|
* Implement glCopyPixels for the front color buffer (or back buffer Pixmap)
|
|
* for the color buffer. Don't support zooming, pixel transfer, etc.
|
|
* We do support copying from one window to another, ala glXMakeCurrentRead.
|
|
*/
|
|
static void
|
|
xmesa_CopyPixels( struct gl_context *ctx,
|
|
GLint srcx, GLint srcy, GLsizei width, GLsizei height,
|
|
GLint destx, GLint desty, GLenum type )
|
|
{
|
|
if (can_do_CopyPixels(ctx, type)) {
|
|
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
|
|
XMesaDisplay *dpy = xmesa->xm_visual->display;
|
|
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
|
|
const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
|
|
struct xmesa_renderbuffer *srcXrb
|
|
= xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
|
|
struct xmesa_renderbuffer *dstXrb
|
|
= xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
|
|
assert(dpy);
|
|
assert(gc);
|
|
|
|
/* Note: we don't do any special clipping work here. We could,
|
|
* but X will do it for us.
|
|
*/
|
|
srcy = YFLIP(srcXrb, srcy) - height + 1;
|
|
desty = YFLIP(dstXrb, desty) - height + 1;
|
|
XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc,
|
|
srcx, srcy, width, height, destx, desty);
|
|
}
|
|
else {
|
|
_swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* Every driver should implement a GetString function in order to
|
|
* return a meaningful GL_RENDERER string.
|
|
*/
|
|
static const GLubyte *
|
|
get_string( struct gl_context *ctx, GLenum name )
|
|
{
|
|
(void) ctx;
|
|
switch (name) {
|
|
case GL_RENDERER:
|
|
return (const GLubyte *) "Mesa X11";
|
|
case GL_VENDOR:
|
|
return NULL;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* We implement the glEnable function only because we care about
|
|
* dither enable/disable.
|
|
*/
|
|
static void
|
|
enable( struct gl_context *ctx, GLenum pname, GLboolean state )
|
|
{
|
|
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
|
|
|
|
switch (pname) {
|
|
case GL_DITHER:
|
|
if (state)
|
|
xmesa->pixelformat = xmesa->xm_visual->dithered_pf;
|
|
else
|
|
xmesa->pixelformat = xmesa->xm_visual->undithered_pf;
|
|
break;
|
|
default:
|
|
; /* silence compiler warning */
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Called when the driver should update its state, based on the new_state
|
|
* flags.
|
|
*/
|
|
static void
|
|
xmesa_update_state(struct gl_context *ctx)
|
|
{
|
|
GLbitfield new_state = ctx->NewState;
|
|
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
|
|
|
|
if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
|
|
_mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
|
|
|
|
/* Propagate statechange information to swrast and swrast_setup
|
|
* modules. The X11 driver has no internal GL-dependent state.
|
|
*/
|
|
_swrast_InvalidateState( ctx, new_state );
|
|
_tnl_InvalidateState( ctx, new_state );
|
|
_swsetup_InvalidateState( ctx, new_state );
|
|
|
|
if (_mesa_is_user_fbo(ctx->DrawBuffer))
|
|
return;
|
|
|
|
/*
|
|
* GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect
|
|
* renderbuffer span/clear funcs.
|
|
* Check _NEW_COLOR to detect dither enable/disable.
|
|
*/
|
|
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) {
|
|
front_xrb->clearFunc = clear_pixmap;
|
|
}
|
|
|
|
back_xrb = xmbuf->backxrb;
|
|
if (back_xrb) {
|
|
if (xmbuf->backxrb->pixmap) {
|
|
back_xrb->clearFunc = clear_pixmap;
|
|
}
|
|
else {
|
|
switch (xmesa->xm_visual->BitsPerPixel) {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* 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(struct gl_context *ctx)
|
|
{
|
|
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);
|
|
}
|
|
|
|
|
|
#if ENABLE_EXT_timer_query
|
|
|
|
/*
|
|
* The GL_EXT_timer_query extension is not enabled for the XServer
|
|
* indirect renderer. Not sure about how/if wrapping of gettimeofday()
|
|
* is done, etc.
|
|
*/
|
|
|
|
struct xmesa_query_object
|
|
{
|
|
struct gl_query_object Base;
|
|
struct timeval StartTime;
|
|
};
|
|
|
|
|
|
static struct gl_query_object *
|
|
xmesa_new_query_object(struct gl_context *ctx, GLuint id)
|
|
{
|
|
struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object);
|
|
if (q) {
|
|
q->Base.Id = id;
|
|
q->Base.Ready = GL_TRUE;
|
|
}
|
|
return &q->Base;
|
|
}
|
|
|
|
|
|
static void
|
|
xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q)
|
|
{
|
|
if (q->Target == GL_TIME_ELAPSED_EXT) {
|
|
struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
|
|
(void) gettimeofday(&xq->StartTime, NULL);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the difference between the two given times in microseconds.
|
|
*/
|
|
static GLuint64EXT
|
|
time_diff(const struct timeval *t0, const struct timeval *t1)
|
|
{
|
|
GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */
|
|
GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */
|
|
GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000;
|
|
GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000;
|
|
return nanosec1 - nanosec0;
|
|
}
|
|
|
|
|
|
static void
|
|
xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q)
|
|
{
|
|
if (q->Target == GL_TIME_ELAPSED_EXT) {
|
|
struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
|
|
struct timeval endTime;
|
|
(void) gettimeofday(&endTime, NULL);
|
|
/* result is in nanoseconds! */
|
|
q->Result = time_diff(&xq->StartTime, &endTime);
|
|
}
|
|
q->Ready = GL_TRUE;
|
|
}
|
|
|
|
#endif /* ENABLE_timer_query */
|
|
|
|
|
|
/**
|
|
* 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->GetString = get_string;
|
|
driver->UpdateState = xmesa_update_state;
|
|
driver->Flush = flush;
|
|
driver->Finish = finish;
|
|
driver->ColorMask = color_mask;
|
|
driver->Enable = enable;
|
|
driver->Viewport = xmesa_viewport;
|
|
if (TEST_META_FUNCS) {
|
|
driver->Clear = _mesa_meta_Clear;
|
|
driver->CopyPixels = _mesa_meta_CopyPixels;
|
|
driver->BlitFramebuffer = _mesa_meta_and_swrast_BlitFramebuffer;
|
|
driver->DrawPixels = _mesa_meta_DrawPixels;
|
|
driver->Bitmap = _mesa_meta_Bitmap;
|
|
}
|
|
else {
|
|
driver->Clear = clear_buffers;
|
|
driver->CopyPixels = xmesa_CopyPixels;
|
|
if (xmvisual->undithered_pf == PF_8R8G8B &&
|
|
xmvisual->dithered_pf == PF_8R8G8B &&
|
|
xmvisual->BitsPerPixel == 32) {
|
|
driver->DrawPixels = xmesa_DrawPixels_8R8G8B;
|
|
}
|
|
else if (xmvisual->undithered_pf == PF_5R6G5B) {
|
|
driver->DrawPixels = xmesa_DrawPixels_5R6G5B;
|
|
}
|
|
}
|
|
|
|
driver->MapRenderbuffer = xmesa_MapRenderbuffer;
|
|
driver->UnmapRenderbuffer = xmesa_UnmapRenderbuffer;
|
|
|
|
driver->GenerateMipmap = _mesa_generate_mipmap;
|
|
|
|
#if ENABLE_EXT_timer_query
|
|
driver->NewQueryObject = xmesa_new_query_object;
|
|
driver->BeginQuery = xmesa_begin_query;
|
|
driver->EndQuery = xmesa_end_query;
|
|
#endif
|
|
}
|
|
|
|
|
|
#define XMESA_NEW_POINT (_NEW_POINT | \
|
|
_NEW_RENDERMODE | \
|
|
_SWRAST_NEW_RASTERMASK)
|
|
|
|
#define XMESA_NEW_LINE (_NEW_LINE | \
|
|
_NEW_TEXTURE | \
|
|
_NEW_LIGHT | \
|
|
_NEW_DEPTH | \
|
|
_NEW_RENDERMODE | \
|
|
_SWRAST_NEW_RASTERMASK)
|
|
|
|
#define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
|
|
_NEW_TEXTURE | \
|
|
_NEW_LIGHT | \
|
|
_NEW_DEPTH | \
|
|
_NEW_RENDERMODE | \
|
|
_SWRAST_NEW_RASTERMASK)
|
|
|
|
|
|
/**
|
|
* Extend the software rasterizer with our line/point/triangle
|
|
* functions.
|
|
* Called during context creation only.
|
|
*/
|
|
void xmesa_register_swrast_functions( struct gl_context *ctx )
|
|
{
|
|
SWcontext *swrast = SWRAST_CONTEXT( ctx );
|
|
|
|
swrast->choose_point = xmesa_choose_point;
|
|
swrast->choose_line = xmesa_choose_line;
|
|
swrast->choose_triangle = xmesa_choose_triangle;
|
|
|
|
/* XXX these lines have no net effect. Remove??? */
|
|
swrast->InvalidatePointMask |= XMESA_NEW_POINT;
|
|
swrast->InvalidateLineMask |= XMESA_NEW_LINE;
|
|
swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE;
|
|
}
|