541 lines
16 KiB
C
541 lines
16 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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* This file contains "accelerated" point, line, and triangle functions.
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* It should be fairly easy to write new special-purpose point, line or
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* triangle functions and hook them into this module.
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*/
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#include "glxheader.h"
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#include "main/macros.h"
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#include "main/mtypes.h"
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#include "xmesaP.h"
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/* Internal swrast includes:
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*/
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#include "swrast/s_depth.h"
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#include "swrast/s_points.h"
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#include "swrast/s_lines.h"
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#include "swrast/s_context.h"
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/**********************************************************************/
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/*** Point rendering ***/
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/**********************************************************************/
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/*
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* Render an array of points into a pixmap, any pixel format.
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*/
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#if 000
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/* XXX don't use this, it doesn't dither correctly */
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static void draw_points_ANY_pixmap( struct gl_context *ctx, const SWvertex *vert )
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{
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XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaDisplay *dpy = xmesa->xm_visual->display;
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XMesaDrawable buffer = xmesa->xm_buffer->buffer;
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XMesaGC gc = xmesa->xm_buffer->gc;
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if (xmesa->xm_visual->mesa_visual.RGBAflag) {
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register int x, y;
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const GLubyte *color = vert->color;
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unsigned long pixel = xmesa_color_to_pixel( xmesa,
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color[0], color[1],
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color[2], color[3],
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xmesa->pixelformat);
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XMesaSetForeground( dpy, gc, pixel );
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x = (GLint) vert->win[0];
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y = YFLIP( xrb, (GLint) vert->win[1] );
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XMesaDrawPoint( dpy, buffer, gc, x, y);
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}
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else {
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/* Color index mode */
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register int x, y;
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XMesaSetForeground( dpy, gc, vert->index );
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x = (GLint) vert->win[0];
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y = YFLIP( xrb, (GLint) vert->win[1] );
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XMesaDrawPoint( dpy, buffer, gc, x, y);
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}
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}
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#endif
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/* Override the swrast point-selection function. Try to use one of
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* our internal point functions, otherwise fall back to the standard
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* swrast functions.
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*/
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void xmesa_choose_point( struct gl_context *ctx )
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{
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#if 0
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XMesaContext xmesa = XMESA_CONTEXT(ctx);
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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if (ctx->RenderMode == GL_RENDER
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&& ctx->Point.Size == 1.0F && !ctx->Point.SmoothFlag
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&& swrast->_RasterMask == 0
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&& ctx->Texture._MaxEnabledTexImageUnit == -1
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&& xmesa->xm_buffer->buffer != XIMAGE) {
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swrast->Point = draw_points_ANY_pixmap;
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}
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else {
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_swrast_choose_point( ctx );
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}
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#else
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_swrast_choose_point( ctx );
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#endif
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}
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/**********************************************************************/
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/*** Line rendering ***/
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/**********************************************************************/
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#if CHAN_BITS == 8
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#define GET_XRB(XRB) struct xmesa_renderbuffer *XRB = \
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xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0])
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/*
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* Draw a flat-shaded, PF_TRUECOLOR line into an XImage.
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*/
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#define NAME flat_TRUECOLOR_line
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#define SETUP_CODE \
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XMesaContext xmesa = XMESA_CONTEXT(ctx); \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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unsigned long pixel; \
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PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
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#define CLIP_HACK 1
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#define PLOT(X,Y) XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel );
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_8A8B8G8R line into an XImage.
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*/
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#define NAME flat_8A8B8G8R_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]);
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) *pixelPtr = pixel;
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_8A8R8G8B line into an XImage.
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*/
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#define NAME flat_8A8R8G8B_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]);
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) *pixelPtr = pixel;
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_8R8G8B line into an XImage.
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*/
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#define NAME flat_8R8G8B_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) *pixelPtr = pixel;
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_8R8G8B24 line into an XImage.
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*/
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#define NAME flat_8R8G8B24_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color;
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#define PIXEL_TYPE bgr_t
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) { \
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pixelPtr->r = color[RCOMP]; \
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pixelPtr->g = color[GCOMP]; \
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pixelPtr->b = color[BCOMP]; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_5R6G5B line into an XImage.
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*/
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#define NAME flat_5R6G5B_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
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#define PIXEL_TYPE GLushort
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) *pixelPtr = pixel;
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, PF_DITHER_5R6G5B line into an XImage.
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*/
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#define NAME flat_DITHER_5R6G5B_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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XMesaContext xmesa = XMESA_CONTEXT(ctx); \
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const GLubyte *color = vert1->color;
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#define PIXEL_TYPE GLushort
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) PACK_TRUEDITHER( *pixelPtr, X, Y, color[0], color[1], color[2] );
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_TRUECOLOR line into an XImage.
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*/
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#define NAME flat_TRUECOLOR_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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XMesaContext xmesa = XMESA_CONTEXT(ctx); \
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const GLubyte *color = vert1->color; \
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unsigned long pixel; \
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PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel); \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_8A8B8G8R line into an XImage.
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*/
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#define NAME flat_8A8B8G8R_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]);
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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*pixelPtr = pixel; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_8A8R8G8B line into an XImage.
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*/
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#define NAME flat_8A8R8G8B_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]);
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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*pixelPtr = pixel; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_8R8G8B line into an XImage.
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*/
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#define NAME flat_8R8G8B_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE GLuint
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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*pixelPtr = pixel; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_8R8G8B24 line into an XImage.
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*/
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#define NAME flat_8R8G8B24_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color;
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE bgr_t
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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pixelPtr->r = color[RCOMP]; \
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pixelPtr->g = color[GCOMP]; \
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pixelPtr->b = color[BCOMP]; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_5R6G5B line into an XImage.
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*/
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#define NAME flat_5R6G5B_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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const GLubyte *color = vert1->color; \
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GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE GLushort
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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*pixelPtr = pixel; \
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}
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#include "swrast/s_linetemp.h"
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/*
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* Draw a flat-shaded, Z-less, PF_DITHER_5R6G5B line into an XImage.
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*/
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#define NAME flat_DITHER_5R6G5B_z_line
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#define SETUP_CODE \
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GET_XRB(xrb); \
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XMesaContext xmesa = XMESA_CONTEXT(ctx); \
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const GLubyte *color = vert1->color;
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#define INTERP_Z 1
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#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
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#define PIXEL_TYPE GLushort
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#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
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#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y)
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#define CLIP_HACK 1
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#define PLOT(X,Y) \
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if (Z < *zPtr) { \
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*zPtr = Z; \
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PACK_TRUEDITHER(*pixelPtr, X, Y, color[0], color[1], color[2]); \
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}
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#include "swrast/s_linetemp.h"
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/**
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* Draw fast, XOR line with XDrawLine in front color buffer.
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* WARNING: this isn't fully OpenGL conformant because different pixels
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* will be hit versus using the other line functions.
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* Don't use the code in X server GLcore module since we need a wrapper
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* for the XSetLineAttributes() function call.
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*/
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static void
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xor_line(struct gl_context *ctx, const SWvertex *vert0, const SWvertex *vert1)
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{
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XMesaContext xmesa = XMESA_CONTEXT(ctx);
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XMesaDisplay *dpy = xmesa->xm_visual->display;
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XMesaGC gc = xmesa->xm_buffer->gc;
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GET_XRB(xrb);
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unsigned long pixel = xmesa_color_to_pixel(ctx,
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vert1->color[0], vert1->color[1],
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vert1->color[2], vert1->color[3],
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xmesa->pixelformat);
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int x0 = (GLint) vert0->attrib[VARYING_SLOT_POS][0];
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int y0 = YFLIP(xrb, (GLint) vert0->attrib[VARYING_SLOT_POS][1]);
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int x1 = (GLint) vert1->attrib[VARYING_SLOT_POS][0];
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int y1 = YFLIP(xrb, (GLint) vert1->attrib[VARYING_SLOT_POS][1]);
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XMesaSetForeground(dpy, gc, pixel);
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XMesaSetFunction(dpy, gc, GXxor);
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XSetLineAttributes(dpy, gc, (int) ctx->Line.Width,
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LineSolid, CapButt, JoinMiter);
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XDrawLine(dpy, xrb->pixmap, gc, x0, y0, x1, y1);
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XMesaSetFunction(dpy, gc, GXcopy); /* this gc is used elsewhere */
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}
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#endif /* CHAN_BITS == 8 */
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/**
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* Return pointer to line drawing function, or NULL if we should use a
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* swrast fallback.
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*/
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static swrast_line_func
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get_line_func(struct gl_context *ctx)
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{
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#if CHAN_BITS == 8
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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XMesaContext xmesa = XMESA_CONTEXT(ctx);
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const struct xmesa_renderbuffer *xrb;
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if ((ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_FRONT_LEFT) &&
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(ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_BACK_LEFT))
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return (swrast_line_func) NULL;
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if (ctx->RenderMode != GL_RENDER) return (swrast_line_func) NULL;
|
|
if (ctx->Line.SmoothFlag) return (swrast_line_func) NULL;
|
|
if (ctx->Texture._MaxEnabledTexImageUnit != -1) return (swrast_line_func) NULL;
|
|
if (ctx->Light.ShadeModel != GL_FLAT) return (swrast_line_func) NULL;
|
|
if (ctx->Line.StippleFlag) return (swrast_line_func) NULL;
|
|
if (swrast->_RasterMask & MULTI_DRAW_BIT) return (swrast_line_func) NULL;
|
|
|
|
xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
|
|
if (xrb->ximage
|
|
&& swrast->_RasterMask==DEPTH_BIT
|
|
&& ctx->Depth.Func==GL_LESS
|
|
&& ctx->Depth.Mask==GL_TRUE
|
|
&& ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
|
|
&& ctx->Line.Width==1.0F) {
|
|
switch (xmesa->pixelformat) {
|
|
case PF_Truecolor:
|
|
return flat_TRUECOLOR_z_line;
|
|
case PF_8A8B8G8R:
|
|
return flat_8A8B8G8R_z_line;
|
|
case PF_8A8R8G8B:
|
|
return flat_8A8R8G8B_z_line;
|
|
case PF_8R8G8B:
|
|
return flat_8R8G8B_z_line;
|
|
case PF_8R8G8B24:
|
|
return flat_8R8G8B24_z_line;
|
|
case PF_5R6G5B:
|
|
return flat_5R6G5B_z_line;
|
|
case PF_Dither_5R6G5B:
|
|
return flat_DITHER_5R6G5B_z_line;
|
|
default:
|
|
return (swrast_line_func)NULL;
|
|
}
|
|
}
|
|
if (xrb->ximage
|
|
&& swrast->_RasterMask==0
|
|
&& ctx->Line.Width==1.0F) {
|
|
switch (xmesa->pixelformat) {
|
|
case PF_Truecolor:
|
|
return flat_TRUECOLOR_line;
|
|
case PF_8A8B8G8R:
|
|
return flat_8A8B8G8R_line;
|
|
case PF_8A8R8G8B:
|
|
return flat_8A8R8G8B_line;
|
|
case PF_8R8G8B:
|
|
return flat_8R8G8B_line;
|
|
case PF_8R8G8B24:
|
|
return flat_8R8G8B24_line;
|
|
case PF_5R6G5B:
|
|
return flat_5R6G5B_line;
|
|
case PF_Dither_5R6G5B:
|
|
return flat_DITHER_5R6G5B_line;
|
|
default:
|
|
return (swrast_line_func)NULL;
|
|
}
|
|
}
|
|
|
|
if (ctx->DrawBuffer->_NumColorDrawBuffers == 1
|
|
&& ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT
|
|
&& swrast->_RasterMask == LOGIC_OP_BIT
|
|
&& ctx->Color.LogicOp == GL_XOR
|
|
&& !ctx->Line.StippleFlag
|
|
&& !ctx->Line.SmoothFlag) {
|
|
return xor_line;
|
|
}
|
|
|
|
#endif /* CHAN_BITS == 8 */
|
|
return (swrast_line_func) NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Override for the swrast line-selection function. Try to use one
|
|
* of our internal line functions, otherwise fall back to the
|
|
* standard swrast functions.
|
|
*/
|
|
void
|
|
xmesa_choose_line(struct gl_context *ctx)
|
|
{
|
|
SWcontext *swrast = SWRAST_CONTEXT(ctx);
|
|
|
|
if (!(swrast->Line = get_line_func( ctx )))
|
|
_swrast_choose_line( ctx );
|
|
}
|