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- /* $Id: xmesa3.c,v 1.12 1997/01/31 23:45:19 brianp Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 2.0
- * Copyright (C) 1995-1996 Brian Paul
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
- /*
- * $Log: xmesa3.c,v $
- * Revision 1.12 1997/01/31 23:45:19 brianp
- * faster flat-shaded dithered triangles from code by Martin Schenk (schenkm@ping.at)
- *
- * Revision 1.11 1996/11/30 15:13:26 brianp
- * added some parenthesis to WINCLIP macros
- *
- * Revision 1.10 1996/11/02 06:17:02 brianp
- * removed some unused local vars
- *
- * Revision 1.9 1996/10/22 02:59:12 brianp
- * incorporated Micheal Pichler's X line stipple patches
- *
- * Revision 1.8 1996/10/22 02:48:18 brianp
- * now use DITHER_SETUP and XDITHER macros
- * use array indexing instead of pointer dereferencing in inner loops
- *
- * Revision 1.7 1996/10/11 03:43:03 brianp
- * add LineZoffset factor to window Z coords
- *
- * Revision 1.6 1996/10/01 03:31:30 brianp
- * use new FixedToDepth() macro
- *
- * Revision 1.5 1996/09/27 01:31:54 brianp
- * removed unused variables
- *
- * Revision 1.4 1996/09/25 02:02:59 brianp
- * coordinates were incorrectly biased in flat_pixmap_triangle()
- *
- * Revision 1.3 1996/09/19 03:16:04 brianp
- * new X/Mesa interface with XMesaContext, XMesaVisual, and XMesaBuffer types
- *
- * Revision 1.2 1996/09/15 14:21:43 brianp
- * now use GLframebuffer and GLvisual
- *
- * Revision 1.1 1996/09/13 01:38:16 brianp
- * Initial revision
- *
- */
-
-
- /*
- * Mesa/X11 interface, part 3.
- *
- * This file contains "accelerated" point, line, and triangle functions.
- * It should be fairly easy to write new special-purpose point, line or
- * triangle functions and hook them into this module.
- */
-
-
-
- #include <sys/time.h>
- #include <assert.h>
-
-
- #include <stdlib.h>
- #include <stdio.h>
- #include <X11/Xlib.h>
- #include "bresenhm.h"
- #include "depth.h"
- #include "interp.h"
- #include "macros.h"
- #include "vb.h"
- #include "types.h"
- #include "xmesaP.h"
-
-
- /*
- * Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
- * shortcut.
- */
- #define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) )
-
-
-
-
- /**********************************************************************/
- /*** Point rendering ***/
- /**********************************************************************/
-
-
- /*
- * Render an array of points into a pixmap, any pixel format.
- */
- static void draw_points_ANY_pixmap( GLcontext *ctx, GLuint first, GLuint last )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- Display *dpy = xmesa->xm_visual->display;
- Drawable buffer = xmesa->xm_buffer->buffer;
- GC gc = xmesa->xm_buffer->gc2;
- struct vertex_buffer *VB = ctx->VB;
- register GLuint i;
-
- if (VB->MonoColor) {
- /* all same color */
- XPoint p[VB_SIZE];
- int n = 0;
- for (i=first;i<=last;i++) {
- if (VB->Unclipped[i]) {
- p[n].x = (GLint) VB->Win[i][0];
- p[n].y = FLIP( (GLint) VB->Win[i][1] );
- n++;
- }
- }
- XDrawPoints( dpy, buffer, xmesa->xm_buffer->gc1, p, n, CoordModeOrigin );
- }
- else {
- /* all different colors */
- int shift = ctx->ColorShift;
- if (xmesa->xm_visual->gl_visual->RGBAflag) {
- /* RGB mode */
- for (i=first;i<=last;i++) {
- if (VB->Unclipped[i]) {
- register int x, y;
- unsigned long pixel = xmesa_color_to_pixel( xmesa,
- VB->Color[i][0] >> shift,
- VB->Color[i][1] >> shift,
- VB->Color[i][2] >> shift,
- VB->Color[i][3] >> shift );
- XSetForeground( dpy, gc, pixel );
- x = (GLint) VB->Win[i][0];
- y = FLIP( (GLint) VB->Win[i][1] );
- XDrawPoint( dpy, buffer, gc, x, y);
- }
- }
- }
- else {
- /* Color index mode */
- for (i=first;i<=last;i++) {
- if (VB->Unclipped[i]) {
- register int x, y;
- XSetForeground( dpy, gc, VB->Index[i] >> shift );
- x = (GLint) VB->Win[i][0];
- y = FLIP( (GLint) VB->Win[i][1] );
- XDrawPoint( dpy, buffer, gc, x, y);
- }
- }
- }
- }
- }
-
-
-
- /*
- * Analyze context state to see if we can provide a fast points drawing
- * function, like those in points.c. Otherwise, return NULL.
- */
- points_func xmesa_get_points_func( GLcontext *ctx )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-
- if (ctx->Point.Size==1.0F && !ctx->Point.SmoothFlag && ctx->RasterMask==0
- && !ctx->Texture.Enabled) {
- if (xmesa->xm_buffer->buffer==XIMAGE) {
- return NULL; /*draw_points_ximage;*/
- }
- else {
- return draw_points_ANY_pixmap;
- }
- }
- else {
- return NULL;
- }
- }
-
-
-
- /**********************************************************************/
- /*** Line rendering ***/
- /**********************************************************************/
-
- /*
- * Render a line into a pixmap, any pixel format.
- */
- static void flat_pixmap_line( GLcontext *ctx, GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- register int x0, y0, x1, y1;
- GC gc;
- if (VB->MonoColor) {
- gc = xmesa->xm_buffer->gc1; /* use current color */
- }
- else {
- unsigned long pixel;
- if (xmesa->xm_visual->gl_visual->RGBAflag) {
- pixel = xmesa_color_to_pixel( xmesa,
- VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2], VB->Color[pv][3] );
- }
- else {
- pixel = VB->Index[pv];
- }
- gc = xmesa->xm_buffer->gc2;
- XSetForeground( xmesa->display, gc, pixel );
- }
- x0 = (GLint) VB->Win[v0][0];
- y0 = FLIP( (GLint) VB->Win[v0][1] );
- x1 = (GLint) VB->Win[v1][0];
- y1 = FLIP( (GLint) VB->Win[v1][1] );
- XDrawLine( xmesa->display, xmesa->xm_buffer->buffer, gc, x0, y0, x1, y1 );
- }
-
-
- /*
- * Despite being clipped to the view volume, the line's window coordinates
- * may just lie outside the window bounds. That is, if the legal window
- * coordinates are [0,W-1][0,H-1], it's possible for x==W and/or y==H.
- * These quick and dirty macros take care of that possibility.
- */
- #define WINCLIP_X(X1,X2) \
- { \
- GLint w = ctx->Buffer->Width; \
- if ((X1==w) | (X2==w)) { \
- if ((X1==w) & (X2==w)) return;\
- X1 -= (X1==w); X2 -= (X2==w);\
- } \
- }
-
- #define WINCLIP_Y(Y1,Y2) \
- { \
- GLint h = ctx->Buffer->Height; \
- if ((Y1==h) | (Y2==h)) { \
- if ((Y1==h) & (Y2==h)) return;\
- Y1 -= (Y1==h); Y2 -= (Y2==h);\
- } \
- }
-
-
- /*
- * Draw a flat-shaded, PF_8A8B8G8R line into an XImage.
- */
- static void flat_8A8B8G8R_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- GLuint pixel;
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
- pixel = PACK_8B8G8R( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define BRESENHAM_PLOT(X,Y) \
- { \
- GLuint *ptr = PIXELADDR4(X,Y); \
- *ptr = pixel; \
- }
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, PF_8R8G8B line into an XImage.
- */
- static void flat_8R8G8B_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- GLuint pixel;
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
- pixel = PACK_8R8G8B( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define BRESENHAM_PLOT(X,Y) \
- { \
- GLuint *ptr = PIXELADDR4(X,Y); \
- *ptr = pixel; \
- }
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, PF_5R6G5B line into an XImage.
- */
- static void flat_5R6G5B_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- GLushort pixel;
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
- pixel = PACK_5R6G5B( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define BRESENHAM_PLOT(X,Y) \
- { \
- GLushort *ptr = PIXELADDR2(X,Y); \
- *ptr = pixel; \
- }
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
-
- /*
- * Draw a flat-shaded, PF_TRUECOLOR line into an XImage.
- */
- static void flat_TRUECOLOR_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- XImage *img = xmesa->xm_buffer->backimage;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- unsigned long pixel = PACK_RGB( VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2] );
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y) \
- XPutPixel( img, X, FLIP(Y), pixel );
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, PF_DITHER 8-bit line into an XImage.
- */
- static void flat_DITHER8_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- GLint r = VB->Color[pv][0], g = VB->Color[pv][1], b = VB->Color[pv][2];
- DITHER_SETUP;
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y) \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = DITHER( X, Y, r, g, b);
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, PF_LOOKUP 8-bit line into an XImage.
- */
- static void flat_LOOKUP8_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- LOOKUP_SETUP;
- GLubyte pixel = LOOKUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y) \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = pixel;
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, PF_HPCR line into an XImage.
- */
- static void flat_HPCR_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], y1 = (GLint) VB->Win[v0][1];
- GLint x2 = (GLint) VB->Win[v1][0], y2 = (GLint) VB->Win[v1][1];
- GLint r = VB->Color[pv][0], g = VB->Color[pv][1], b = VB->Color[pv][2];
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y) \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = DITHER_HPCR( X, Y, r, g, b);
-
- BRESENHAM( x1, y1, x2, y2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_TRUECOLOR line into an XImage.
- */
- static void flat_TRUECOLOR_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- unsigned long pixel = PACK_RGB( VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- XPutPixel( img, X, FLIP(Y), pixel ); \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_8A8B8G8R line into an XImage.
- */
- static void flat_8A8B8G8R_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- GLuint pixel = PACK_8B8G8R( VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLuint *ptr = PIXELADDR4(X,Y); \
- *ptr = pixel; \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_8R8G8B line into an XImage.
- */
- static void flat_8R8G8B_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- GLuint pixel = PACK_8R8G8B( VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLuint *ptr = PIXELADDR4(X,Y); \
- *ptr = pixel; \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_5R6G5B line into an XImage.
- */
- static void flat_5R6G5B_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- GLuint pixel = PACK_5R6G5B( VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLushort *ptr = PIXELADDR2(X,Y); \
- *ptr = pixel; \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_DITHER 8-bit line into an XImage.
- */
- static void flat_DITHER8_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- GLint r = VB->Color[pv][0], g = VB->Color[pv][1], b = VB->Color[pv][2];
- DITHER_SETUP;
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = DITHER( X, Y, r, g, b); \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_LOOKUP 8-bit line into an XImage.
- */
- static void flat_LOOKUP8_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- LOOKUP_SETUP;
- GLubyte pixel = LOOKUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = pixel; \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
- /*
- * Draw a flat-shaded, Z-less, PF_HPCR line into an XImage.
- */
- static void flat_HPCR_z_line( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- GLint x1 = (GLint) VB->Win[v0][0], x2 = (GLint) VB->Win[v1][0];
- GLint y1 = (GLint) VB->Win[v0][1], y2 = (GLint) VB->Win[v1][1];
- GLint z1 = (GLint) (VB->Win[v0][2] + ctx->LineZoffset);
- GLint z2 = (GLint) (VB->Win[v1][2] + ctx->LineZoffset);
- GLint r = VB->Color[pv][0], g = VB->Color[pv][1], b = VB->Color[pv][2];
-
- WINCLIP_X(x1,x2);
- WINCLIP_Y(y1,y2);
-
- #define BRESENHAM_PLOT(X,Y,Z,ZBUF) \
- if (Z < *ZBUF) { \
- GLubyte *ptr = PIXELADDR1(X,Y); \
- *ptr = DITHER_HPCR( X, Y, r, g, b); \
- *ZBUF = Z; \
- }
-
- BRESENHAM_Z( ctx, x1, y1, z1, x2, y2, z2 );
-
- #undef BRESENHAM_PLOT
- }
-
-
-
- /*
- * Examine ctx->Line attributes and set xmesa->xm_buffer->gc1
- * and xmesa->xm_buffer->gc2 appropriately.
- */
- static void setup_x_line_options( GLcontext *ctx )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- int i, state, state0, new_state, len, offs;
- int tbit;
- char *dptr;
- int n_segments = 0;
- char dashes[20];
- int line_width, line_style;
-
- /*** Line Stipple ***/
- if (ctx->Line.StippleFlag) {
- const int pattern = ctx->Line.StipplePattern;
-
- dptr = dashes;
- state0 = state = ((pattern & 1) != 0);
-
- /* Decompose the pattern */
- for (i=1,tbit=2,len=1;i<16;++i,tbit=(tbit<<1))
- {
- new_state = ((tbit & pattern) != 0);
- if (state != new_state)
- {
- *dptr++ = ctx->Line.StippleFactor * len;
- len = 1;
- state = new_state;
- }
- else
- ++len;
- }
- *dptr = ctx->Line.StippleFactor * len;
- n_segments = 1 + (dptr - dashes);
-
- /* ensure an even no. of segments, or X may toggle on/off for consecutive patterns */
- /* if (n_segments & 1) dashes [n_segments++] = 0; value of 0 not allowed in dash list */
-
- /* Handle case where line style starts OFF */
- if (state0 == 0)
- offs = dashes[0];
- else
- offs = 0;
-
- #if 0
- fprintf (stderr, "input pattern: 0x%04x, offset %d, %d segments:", pattern, offs, n_segments);
- for (i = 0; i < n_segments; i++)
- fprintf (stderr, " %d", dashes[i]);
- fprintf (stderr, "\n");
- #endif
-
- XSetDashes( xmesa->display, xmesa->xm_buffer->gc1, offs, dashes, n_segments );
- XSetDashes( xmesa->display, xmesa->xm_buffer->gc2, offs, dashes, n_segments );
-
- line_style = LineOnOffDash;
- }
- else {
- line_style = LineSolid;
- }
-
- /*** Line Width ***/
- line_width = (int) (ctx->Line.Width+0.5F);
- if (line_width < 2) {
- /* Use fast lines when possible */
- line_width = 0;
- }
-
- /*** Set GC attributes ***/
- XSetLineAttributes( xmesa->display, xmesa->xm_buffer->gc1,
- line_width, line_style, CapButt, JoinBevel);
- XSetLineAttributes( xmesa->display, xmesa->xm_buffer->gc2,
- line_width, line_style, CapButt, JoinBevel);
- XSetFillStyle( xmesa->display, xmesa->xm_buffer->gc1, FillSolid );
- XSetFillStyle( xmesa->display, xmesa->xm_buffer->gc2, FillSolid );
- }
-
-
-
- /*
- * Analyze context state to see if we can provide a fast line drawing
- * function, like those in lines.c. Otherwise, return NULL.
- */
- line_func xmesa_get_line_func( GLcontext *ctx )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- int depth = xmesa->xm_visual->visinfo->depth;
-
- if (ctx->Line.SmoothFlag) return NULL;
- if (ctx->Texture.Enabled) return NULL;
- if (ctx->Light.ShadeModel!=GL_FLAT) return NULL;
-
- if (xmesa->xm_buffer->buffer==XIMAGE
- && ctx->RasterMask==DEPTH_BIT
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_TRUE
- && ctx->Line.Width==1.0F
- && ctx->Line.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return flat_TRUECOLOR_z_line;
- case PF_8A8B8G8R:
- return flat_8A8B8G8R_z_line;
- case PF_8R8G8B:
- return flat_8R8G8B_z_line;
- case PF_5R6G5B:
- return flat_5R6G5B_z_line;
- case PF_DITHER:
- return (depth==8) ? flat_DITHER8_z_line : NULL;
- case PF_LOOKUP:
- return (depth==8) ? flat_LOOKUP8_z_line : NULL;
- case PF_HPCR:
- return flat_HPCR_z_line;
- default:
- return NULL;
- }
- }
- if (xmesa->xm_buffer->buffer==XIMAGE
- && ctx->RasterMask==0
- && ctx->Line.Width==1.0F
- && ctx->Line.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return flat_TRUECOLOR_line;
- case PF_8A8B8G8R:
- return flat_8A8B8G8R_line;
- case PF_8R8G8B:
- return flat_8R8G8B_line;
- case PF_5R6G5B:
- return flat_5R6G5B_line;
- case PF_DITHER:
- return (depth==8) ? flat_DITHER8_line : NULL;
- case PF_LOOKUP:
- return (depth==8) ? flat_LOOKUP8_line : NULL;
- case PF_HPCR:
- return flat_HPCR_line;
- default:
- return NULL;
- }
- }
- if (xmesa->xm_buffer->buffer!=XIMAGE && ctx->RasterMask==0) {
- setup_x_line_options( ctx );
- return flat_pixmap_line;
- }
- return NULL;
- }
-
-
-
-
- /**********************************************************************/
- /*** Triangle rendering ***/
- /**********************************************************************/
-
- /*
- * Render a triangle into a pixmap, any pixel format, flat shaded and
- * no raster ops.
- */
- void flat_pixmap_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- struct vertex_buffer *VB = ctx->VB;
- XPoint p[3];
- GC gc;
- if (VB->MonoColor) {
- gc = xmesa->xm_buffer->gc1; /* use current color */
- }
- else {
- unsigned long pixel;
- if (xmesa->xm_visual->gl_visual->RGBAflag) {
- pixel = xmesa_color_to_pixel( xmesa,
- VB->Color[pv][0], VB->Color[pv][1],
- VB->Color[pv][2], VB->Color[pv][3] );
- }
- else {
- pixel = VB->Index[pv];
- }
- gc = xmesa->xm_buffer->gc2;
- XSetForeground( xmesa->display, gc, pixel );
- }
- p[0].x = (GLint) (VB->Win[v0][0] + 0.5f);
- p[0].y = FLIP( (GLint) (VB->Win[v0][1] - 0.5f) );
- p[1].x = (GLint) (VB->Win[v1][0] + 0.5f);
- p[1].y = FLIP( (GLint) (VB->Win[v1][1] - 0.5f) );
- p[2].x = (GLint) (VB->Win[v2][0] + 0.5f);
- p[2].y = FLIP( (GLint) (VB->Win[v2][1] - 0.5f) );
- XFillPolygon( xmesa->display, xmesa->xm_buffer->buffer, gc,
- p, 3, Convex, CoordModeOrigin );
- }
-
-
-
- /*
- * XImage, smooth, depth-buffered, PF_TRUECOLOR triangle.
- */
- static void smooth_TRUECOLOR_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- unsigned long p = PACK_RGB( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- XPutPixel( img, xx, yy, p ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, depth-buffered, PF_8A8B8G8R triangle.
- */
- static void smooth_8A8B8G8R_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = PACK_8B8G8R( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, depth-buffered, PF_8R8G8B triangle.
- */
- static void smooth_8R8G8B_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = PACK_8R8G8B( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, depth-buffered, PF_5R6G5B triangle.
- */
- static void smooth_5R6G5B_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR2(X,Y)
- #define PIXEL_TYPE GLushort
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = PACK_5R6G5B( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, depth-buffered, 8-bit, PF_DITHER8 triangle.
- */
- static void smooth_DITHER8_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- XDITHER_SETUP(yy); \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = XDITHER( xx, FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, depth-buffered, PF_DITHER triangle.
- */
- static void smooth_DITHER_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- XDITHER_SETUP(yy); \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- unsigned long p = XDITHER( xx, FixedToInt(ffr), \
- FixedToInt(ffg), FixedToInt(ffb) ); \
- XPutPixel( img, xx, yy, p ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, depth-buffered, 8-bit PF_LOOKUP triangle.
- */
- static void smooth_LOOKUP8_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- LOOKUP_SETUP; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = LOOKUP( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, depth-buffered, 8-bit PF_HPCR triangle.
- */
- static void smooth_HPCR_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = DITHER_HPCR( xx, yy, FixedToInt(ffr), \
- FixedToInt(ffg), FixedToInt(ffb) ); \
- zRow[i] = z; \
- } \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, flat, depth-buffered, PF_TRUECOLOR triangle.
- */
- static void flat_TRUECOLOR_z_triangle( GLcontext *ctx,
- GLuint v0, GLuint v1, GLuint v2,
- GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_Z 1
- #define SETUP_CODE \
- unsigned long pixel = PACK_RGB( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
-
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- XPutPixel( img, xx, yy, pixel ); \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, PF_8A8B8G8R triangle.
- */
- static void flat_8A8B8G8R_z_triangle( GLcontext *ctx, GLuint v0,
- GLuint v1, GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_8B8G8R( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = p; \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, PF_8R8G8B triangle.
- */
- static void flat_8R8G8B_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_8R8G8B( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = p; \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, PF_5R6G5B triangle.
- */
- static void flat_5R6G5B_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR2(X,Y)
- #define PIXEL_TYPE GLushort
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_5R6G5B( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = p; \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, 8-bit PF_DITHER triangle.
- */
- static void flat_DITHER8_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- FLAT_DITHER_SETUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, len = RIGHT-LEFT; \
- FLAT_DITHER_ROW_SETUP(FLIP(Y)); \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = FLAT_DITHER(xx); \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, PF_DITHER triangle.
- */
- static void flat_DITHER_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_Z 1
- #define SETUP_CODE \
- FLAT_DITHER_SETUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- FLAT_DITHER_ROW_SETUP(yy); \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- unsigned long p = FLAT_DITHER(xx); \
- XPutPixel( img, xx, yy, p ); \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, depth-buffered, 8-bit PF_HPCR triangle.
- */
- static void flat_HPCR_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- GLubyte r = VB->Color[pv][0]; \
- GLubyte g = VB->Color[pv][1]; \
- GLubyte b = VB->Color[pv][2];
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, xx = LEFT, yy = FLIP(Y), len = RIGHT-LEFT; \
- for (i=0;i<len;i++,xx++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = DITHER_HPCR( xx, yy, r, g, b ); \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, flat, depth-buffered, 8-bit PF_LOOKUP triangle.
- */
- static void flat_LOOKUP8_z_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_Z 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- LOOKUP_SETUP; \
- GLubyte r = VB->Color[pv][0]; \
- GLubyte g = VB->Color[pv][1]; \
- GLubyte b = VB->Color[pv][2]; \
- GLubyte p = LOOKUP(r,g,b);
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i, len = RIGHT-LEFT; \
- for (i=0;i<len;i++) { \
- GLdepth z = FixedToDepth(ffz); \
- if (z < zRow[i]) { \
- pRow[i] = p; \
- zRow[i] = z; \
- } \
- ffz += fdzdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, NON-depth-buffered, PF_TRUECOLOR triangle.
- */
- static void smooth_TRUECOLOR_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_RGB 1
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- for (xx=LEFT;xx<RIGHT;xx++) { \
- unsigned long p = PACK_RGB( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- XPutPixel( img, xx, yy, p ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, PF_8A8B8G8R triangle.
- */
- static void smooth_8A8B8G8R_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = PACK_8B8G8R( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, PF_8R8G8B triangle.
- */
- static void smooth_8R8G8B_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = PACK_8R8G8B( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, PF_5R6G5B triangle.
- */
- static void smooth_5R6G5B_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR2(X,Y)
- #define PIXEL_TYPE GLushort
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = PACK_5R6G5B( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, 8-bit PF_DITHER triangle.
- */
- static void smooth_DITHER8_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- PIXEL_TYPE *pixel = pRow; \
- XDITHER_SETUP(yy); \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = XDITHER( xx, FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, PF_DITHER triangle.
- */
- static void smooth_DITHER_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define INTERP_RGB 1
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- XDITHER_SETUP(yy); \
- for (xx=LEFT;xx<RIGHT;xx++) { \
- unsigned long p = XDITHER( xx, FixedToInt(ffr), \
- FixedToInt(ffg), FixedToInt(ffb) ); \
- XPutPixel( img, xx, yy, p ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, smooth, NON-depth-buffered, 8-bit PF_LOOKUP triangle.
- */
- static void smooth_LOOKUP8_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- LOOKUP_SETUP; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = LOOKUP( FixedToInt(ffr), FixedToInt(ffg), \
- FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
- /*
- * XImage, smooth, NON-depth-buffered, 8-bit PF_HPCR triangle.
- */
- static void smooth_HPCR_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define INTERP_RGB 1
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = DITHER_HPCR( xx, yy, FixedToInt(ffr), \
- FixedToInt(ffg), FixedToInt(ffb) ); \
- ffr += fdrdx; ffg += fdgdx; ffb += fdbdx; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, PF_TRUECOLOR triangle.
- */
- static void flat_TRUECOLOR_triangle( GLcontext *ctx, GLuint v0,
- GLuint v1, GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define SETUP_CODE \
- unsigned long pixel = PACK_RGB( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- for (xx=LEFT;xx<RIGHT;xx++) { \
- XPutPixel( img, xx, yy, pixel ); \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, PF_8A8B8G8R triangle.
- */
- static void flat_8A8B8G8R_triangle( GLcontext *ctx, GLuint v0,
- GLuint v1, GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_8B8G8R( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = p; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, PF_8R8G8B triangle.
- */
- static void flat_8R8G8B_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR4(X,Y)
- #define PIXEL_TYPE GLuint
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_8R8G8B( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = p; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, PF_5R6G5B triangle.
- */
- static void flat_5R6G5B_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR2(X,Y)
- #define PIXEL_TYPE GLushort
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- unsigned long p = PACK_5R6G5B( VB->Color[pv][0], \
- VB->Color[pv][1], VB->Color[pv][2] );
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = p; \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, 8-bit PF_DITHER triangle.
- */
- static void flat_DITHER8_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- FLAT_DITHER_SETUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- FLAT_DITHER_ROW_SETUP(FLIP(Y)); \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = FLAT_DITHER(xx); \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, PF_DITHER triangle.
- */
- static void flat_DITHER_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- XImage *img = xmesa->xm_buffer->backimage;
- #define SETUP_CODE \
- FLAT_DITHER_SETUP( VB->Color[pv][0], VB->Color[pv][1], VB->Color[pv][2] );
-
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- FLAT_DITHER_ROW_SETUP(yy); \
- for (xx=LEFT;xx<RIGHT;xx++) { \
- unsigned long p = FLAT_DITHER(xx); \
- XPutPixel( img, xx, yy, p ); \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, 8-bit PF_HPCR triangle.
- */
- static void flat_HPCR_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- GLubyte r = VB->Color[pv][0]; \
- GLubyte g = VB->Color[pv][1]; \
- GLubyte b = VB->Color[pv][2];
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx, yy = FLIP(Y); \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = DITHER_HPCR( xx, yy, r, g, b ); \
- } \
- }
- #include "tritemp.h"
- }
-
-
- /*
- * XImage, flat, NON-depth-buffered, 8-bit PF_LOOKUP triangle.
- */
- static void flat_LOOKUP8_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
- GLuint v2, GLuint pv )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- #define PIXEL_ADDRESS(X,Y) PIXELADDR1(X,Y)
- #define PIXEL_TYPE GLubyte
- #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
- #define SETUP_CODE \
- LOOKUP_SETUP; \
- GLubyte r = VB->Color[pv][0]; \
- GLubyte g = VB->Color[pv][1]; \
- GLubyte b = VB->Color[pv][2]; \
- GLubyte p = LOOKUP(r,g,b);
- #define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint xx; \
- PIXEL_TYPE *pixel = pRow; \
- for (xx=LEFT;xx<RIGHT;xx++,pixel++) { \
- *pixel = p; \
- } \
- }
- #include "tritemp.h"
- }
-
-
-
-
- /*
- * This function is called if we're about to render triangles into an
- * X window/pixmap. It sets the polygon stipple pattern if enabled.
- */
- static void setup_x_polygon_options( GLcontext *ctx )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- int fill_type;
-
- if (ctx->Polygon.StippleFlag) {
- /*
- * Allocate polygon stippling stuff once for this context.
- */
- if (xmesa->xm_buffer->stipple_pixmap == 0) {
- XGCValues values;
- XMesaBuffer b = xmesa->xm_buffer;
- b->stipple_pixmap = XCreatePixmap( xmesa->display,
- b->buffer, 32, 32, 1 );
- values.function = GXcopy;
- values.foreground = 1;
- values.background = 0;
- b->stipple_gc = XCreateGC( xmesa->display, b->stipple_pixmap,
- (GCFunction|GCForeground|GCBackground),
- &values );
- b->stipple_ximage = XCreateImage( xmesa->display,
- xmesa->xm_visual->visinfo->visual,
- 1, ZPixmap, 0,
- (char *)ctx->PolygonStipple,
- 32, 32, 8, 0 );
- b->stipple_ximage->byte_order = LSBFirst;
- b->stipple_ximage->bitmap_bit_order = LSBFirst;
- b->stipple_ximage->bitmap_unit = 32;
- }
-
- /*
- * NOTE: We don't handle the following here!
- * GL_UNPACK_SWAP_BYTES
- * GL_UNPACK_LSB_FIRST
- */
- XPutImage( xmesa->display,
- xmesa->xm_buffer->stipple_pixmap,
- xmesa->xm_buffer->stipple_gc,
- xmesa->xm_buffer->stipple_ximage, 0, 0, 0, 0, 32, 32 );
- XSetStipple( xmesa->display, xmesa->xm_buffer->gc1,
- xmesa->xm_buffer->stipple_pixmap );
- XSetStipple( xmesa->display, xmesa->xm_buffer->gc2,
- xmesa->xm_buffer->stipple_pixmap );
- fill_type = FillStippled;
- }
- else {
- fill_type = FillSolid;
- }
-
- XSetFillStyle( xmesa->display, xmesa->xm_buffer->gc1, fill_type );
- XSetFillStyle( xmesa->display, xmesa->xm_buffer->gc2, fill_type );
- }
-
-
-
- triangle_func xmesa_get_triangle_func( GLcontext *ctx )
- {
- XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
- int depth = xmesa->xm_visual->visinfo->depth;
-
- if (ctx->Polygon.SmoothFlag) return NULL;
- if (ctx->Texture.Enabled) return NULL;
-
- if (xmesa->xm_buffer->buffer==XIMAGE) {
- if ( ctx->Light.ShadeModel==GL_SMOOTH
- && ctx->RasterMask==DEPTH_BIT
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_TRUE
- && ctx->Polygon.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return smooth_TRUECOLOR_z_triangle;
- case PF_8A8B8G8R:
- return smooth_8A8B8G8R_z_triangle;
- case PF_8R8G8B:
- return smooth_8R8G8B_z_triangle;
- case PF_5R6G5B:
- return smooth_5R6G5B_z_triangle;
- case PF_HPCR:
- return smooth_HPCR_z_triangle;
- case PF_DITHER:
- return (depth==8) ? smooth_DITHER8_z_triangle
- : smooth_DITHER_z_triangle;
- case PF_LOOKUP:
- return (depth==8) ? smooth_LOOKUP8_z_triangle : NULL;
- default:
- return NULL;
- }
- }
- if ( ctx->Light.ShadeModel==GL_FLAT
- && ctx->RasterMask==DEPTH_BIT
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_TRUE
- && ctx->Polygon.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return flat_TRUECOLOR_z_triangle;
- case PF_8A8B8G8R:
- return flat_8A8B8G8R_z_triangle;
- case PF_8R8G8B:
- return flat_8R8G8B_z_triangle;
- case PF_5R6G5B:
- return flat_5R6G5B_z_triangle;
- case PF_HPCR:
- return flat_HPCR_z_triangle;
- case PF_DITHER:
- return (depth==8) ? flat_DITHER8_z_triangle
- : flat_DITHER_z_triangle;
- case PF_LOOKUP:
- return (depth==8) ? flat_LOOKUP8_z_triangle : NULL;
- default:
- return NULL;
- }
- }
- if ( ctx->RasterMask==0 /* no depth test */
- && ctx->Light.ShadeModel==GL_SMOOTH
- && ctx->Polygon.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return smooth_TRUECOLOR_triangle;
- case PF_8A8B8G8R:
- return smooth_8A8B8G8R_triangle;
- case PF_8R8G8B:
- return smooth_8R8G8B_triangle;
- case PF_5R6G5B:
- return smooth_5R6G5B_triangle;
- case PF_HPCR:
- return smooth_HPCR_triangle;
- case PF_DITHER:
- return (depth==8) ? smooth_DITHER8_triangle
- : smooth_DITHER_triangle;
- case PF_LOOKUP:
- return (depth==8) ? smooth_LOOKUP8_triangle : NULL;
- default:
- return NULL;
- }
- }
-
- if ( ctx->RasterMask==0 /* no depth test */
- && ctx->Light.ShadeModel==GL_FLAT
- && ctx->Polygon.StippleFlag==GL_FALSE) {
- switch (xmesa->pixelformat) {
- case PF_TRUECOLOR:
- return flat_TRUECOLOR_triangle;
- case PF_8A8B8G8R:
- return flat_8A8B8G8R_triangle;
- case PF_8R8G8B:
- return flat_8R8G8B_triangle;
- case PF_5R6G5B:
- return flat_5R6G5B_triangle;
- case PF_HPCR:
- return flat_HPCR_triangle;
- case PF_DITHER:
- return (depth==8) ? flat_DITHER8_triangle
- : flat_DITHER_triangle;
- case PF_LOOKUP:
- return (depth==8) ? flat_LOOKUP8_triangle : NULL;
- default:
- return NULL;
- }
- }
-
- return NULL;
- }
- else {
- /* pixmap */
- if (ctx->Light.ShadeModel==GL_FLAT && ctx->RasterMask==0) {
- setup_x_polygon_options( ctx );
- return flat_pixmap_triangle;
- }
- return NULL;
- }
- }
-
-