From e3a051e0538a605551f4d58294c94f5eb00ed07f Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Tue, 31 Oct 2000 18:00:04 +0000 Subject: Moved software rasterizer functionality to new directory. --- src/mesa/swrast/s_lines.c | 1173 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1173 insertions(+) create mode 100644 src/mesa/swrast/s_lines.c (limited to 'src/mesa/swrast/s_lines.c') diff --git a/src/mesa/swrast/s_lines.c b/src/mesa/swrast/s_lines.c new file mode 100644 index 00000000000..75a01cf12eb --- /dev/null +++ b/src/mesa/swrast/s_lines.c @@ -0,0 +1,1173 @@ +/* $Id: s_lines.c,v 1.1 2000/10/31 18:00:04 keithw Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.5 + * + * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include "glheader.h" +#include "feedback.h" +#include "macros.h" +#include "mmath.h" +#include "vb.h" + +#include "s_pb.h" +#include "s_depth.h" + + + +/**********************************************************************/ +/***** Rasterization *****/ +/**********************************************************************/ + + +/* + * There are 4 pairs (RGBA, CI) of line drawing functions: + * 1. simple: width=1 and no special rasterization functions (fastest) + * 2. flat: width=1, non-stippled, flat-shaded, any raster operations + * 3. smooth: width=1, non-stippled, smooth-shaded, any raster operations + * 4. general: any other kind of line (slowest) + */ + + +/* + * All line drawing functions have the same arguments: + * v1, v2 - indexes of first and second endpoints into vertex buffer arrays + * pv - provoking vertex: which vertex color/index to use for flat shading. + */ + + + + + + +#if MAX_WIDTH > MAX_HEIGHT +# define MAXPOINTS MAX_WIDTH +#else +# define MAXPOINTS MAX_HEIGHT +#endif + + +/* Flat, color index line */ +static void flat_ci_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] ); + +#define INTERP_XY 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, 0, 0); + +#include "s_linetemp.h" + + gl_flush_pb(ctx); +} + + + +/* Flat, color index line with Z interpolation/testing */ +static void flat_ci_z_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] ); + +#define INTERP_XY 1 +#define INTERP_Z 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); + +#include "s_linetemp.h" + + gl_flush_pb(ctx); +} + + + +/* Flat-shaded, RGBA line */ +static void flat_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + const GLchan *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] ); + +#define INTERP_XY 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, 0, 0); + +#include "s_linetemp.h" + + gl_flush_pb(ctx); +} + + + +/* Flat-shaded, RGBA line with Z interpolation/testing */ +static void flat_rgba_z_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + const GLchan *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] ); + +#define INTERP_XY 1 +#define INTERP_Z 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); + +#include "s_linetemp.h" + + gl_flush_pb(ctx); +} + + + +/* Smooth shaded, color index line */ +static void smooth_ci_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLuint *pbi = ctx->PB->index; + (void) pvert; + + ctx->PB->mono = GL_FALSE; + +#define INTERP_XY 1 +#define INTERP_INDEX 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbi[count] = I; \ + count++; + +#include "s_linetemp.h" + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + +/* Smooth shaded, color index line with Z interpolation/testing */ +static void smooth_ci_z_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLuint *pbi = ctx->PB->index; + (void) pvert; + + ctx->PB->mono = GL_FALSE; + +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_INDEX 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbi[count] = I; \ + count++; + +#include "s_linetemp.h" + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + +/* Smooth-shaded, RGBA line */ +static void smooth_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + + ctx->PB->mono = GL_FALSE; + +#define INTERP_XY 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; + +#include "s_linetemp.h" + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + +/* Smooth-shaded, RGBA line with Z interpolation/testing */ +static void smooth_rgba_z_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + + (void) pvert; + + ctx->PB->mono = GL_FALSE; + +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; + +#include "s_linetemp.h" + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + +#define CHECK_FULL(count) \ + if (count >= PB_SIZE-MAX_WIDTH) { \ + ctx->PB->count = count; \ + gl_flush_pb(ctx); \ + count = ctx->PB->count; \ + } + + + +/* Smooth shaded, color index, any width, maybe stippled */ +static void general_smooth_ci_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLuint *pbi = ctx->PB->index; + (void) pvert; + + ctx->PB->mono = GL_FALSE; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_INDEX 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbi[count] = I; \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled */ + if (ctx->Line.Width==2.0F) { + /* special case: unstippled and width=2 */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_INDEX 1 +#define XMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X; \ + pby[count] = Y; pby[count+1] = Y+1; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + pbi[count] = I; pbi[count+1] = I; \ + count += 2; \ + CHECK_FULL(count); +#define YMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X+1; \ + pby[count] = Y; pby[count+1] = Y; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + pbi[count] = I; pbi[count+1] = I; \ + count += 2; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled, any width */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_INDEX 1 +#define WIDE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbi[count] = I; \ + pbfog[count] = fog0; \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + +/* Flat shaded, color index, any width, maybe stippled */ +static void general_flat_ci_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] ); + count = ctx->PB->count; + + if (ctx->Line.StippleFlag) { + /* stippled, any width */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled */ + if (ctx->Line.Width==2.0F) { + /* special case: unstippled and width=2 */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define XMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X; \ + pby[count] = Y; pby[count+1] = Y+1; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + count += 2; \ + CHECK_FULL(count); +#define YMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X+1; \ + pby[count] = Y; pby[count+1] = Y; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + count += 2; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled, any width */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define WIDE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + +static void general_smooth_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + + (void) pvert; + + ctx->PB->mono = GL_FALSE; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled */ + if (ctx->Line.Width==2.0F) { + /* special case: unstippled and width=2 */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define XMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X; \ + pby[count] = Y; pby[count+1] = Y+1; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + pbrgba[count+1][RCOMP] = FixedToInt(r0); \ + pbrgba[count+1][GCOMP] = FixedToInt(g0); \ + pbrgba[count+1][BCOMP] = FixedToInt(b0); \ + pbrgba[count+1][ACOMP] = FixedToInt(a0); \ + count += 2; \ + CHECK_FULL(count); +#define YMAJOR_PLOT(X,Y) \ + pbx[count] = X; pbx[count+1] = X+1; \ + pby[count] = Y; pby[count+1] = Y; \ + pbz[count] = Z; pbz[count+1] = Z; \ + pbfog[count] = fog0; pbfog[count+1] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + pbrgba[count+1][RCOMP] = FixedToInt(r0); \ + pbrgba[count+1][GCOMP] = FixedToInt(g0); \ + pbrgba[count+1][BCOMP] = FixedToInt(b0); \ + pbrgba[count+1][ACOMP] = FixedToInt(a0); \ + count += 2; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + else { + /* unstippled, any width */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define WIDE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; \ + CHECK_FULL(count); +#include "s_linetemp.h" + } + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + +static void general_flat_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + const GLchan *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] ); + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); +#include "s_linetemp.h" + } + else { + /* unstippled */ + if (ctx->Line.Width==2.0F) { + /* special case: unstippled and width=2 */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define XMAJOR_PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); \ + PB_WRITE_PIXEL(ctx->PB, X, Y+1, Z, fog0); +#define YMAJOR_PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); \ + PB_WRITE_PIXEL(ctx->PB, X+1, Y, Z, fog0); +#include "s_linetemp.h" + } + else { + /* unstippled, any width */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define WIDE 1 +#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); +#include "s_linetemp.h" + } + } + + gl_flush_pb(ctx); +} + + +/* Flat-shaded, textured, any width, maybe stippled */ +static void flat_textured_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pv ) +{ + GLint count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLfloat *pbs = ctx->PB->s[0]; + GLfloat *pbt = ctx->PB->t[0]; + GLfloat *pbu = ctx->PB->u[0]; + GLchan *color = ctx->VB->ColorPtr->data[pv]; + PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] ); + count = ctx->PB->count; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_TEX 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbs[count] = fragTexcoord[0];\ + pbt[count] = fragTexcoord[1];\ + pbu[count] = fragTexcoord[2];\ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_TEX 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbs[count] = fragTexcoord[0];\ + pbt[count] = fragTexcoord[1];\ + pbu[count] = fragTexcoord[2];\ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + +/* Smooth-shaded, textured, any width, maybe stippled */ +static void smooth_textured_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLfloat *pbs = ctx->PB->s[0]; + GLfloat *pbt = ctx->PB->t[0]; + GLfloat *pbu = ctx->PB->u[0]; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + + ctx->PB->mono = GL_FALSE; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define INTERP_TEX 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbs[count] = fragTexcoord[0]; \ + pbt[count] = fragTexcoord[1]; \ + pbu[count] = fragTexcoord[2]; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define INTERP_TEX 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbs[count] = fragTexcoord[0]; \ + pbt[count] = fragTexcoord[1]; \ + pbu[count] = fragTexcoord[2]; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + +/* Smooth-shaded, multitextured, any width, maybe stippled, separate specular + * color interpolation. + */ +static void smooth_multitextured_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + GLchan (*pbspec)[3] = ctx->PB->spec; + + (void) pvert; + + ctx->PB->mono = GL_FALSE; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_SPEC 1 +#define INTERP_ALPHA 1 +#define INTERP_MULTITEX 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + GLuint u; \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + pbspec[count][RCOMP] = FixedToInt(sr0); \ + pbspec[count][GCOMP] = FixedToInt(sg0); \ + pbspec[count][BCOMP] = FixedToInt(sb0); \ + for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { \ + if (ctx->Texture.Unit[u].ReallyEnabled) { \ + ctx->PB->s[u][0] = fragTexcoord[u][0]; \ + ctx->PB->s[u][1] = fragTexcoord[u][1]; \ + ctx->PB->s[u][2] = fragTexcoord[u][2]; \ + ctx->PB->s[u][3] = fragTexcoord[u][3]; \ + } \ + } \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_SPEC 1 +#define INTERP_ALPHA 1 +#define INTERP_MULTITEX 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + GLuint u; \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + pbspec[count][RCOMP] = FixedToInt(sr0); \ + pbspec[count][GCOMP] = FixedToInt(sg0); \ + pbspec[count][BCOMP] = FixedToInt(sb0); \ + for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { \ + if (ctx->Texture.Unit[u].ReallyEnabled) { \ + ctx->PB->s[u][0] = fragTexcoord[u][0]; \ + ctx->PB->s[u][1] = fragTexcoord[u][1]; \ + ctx->PB->s[u][2] = fragTexcoord[u][2]; \ + ctx->PB->s[u][3] = fragTexcoord[u][3]; \ + } \ + } \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + +/* Flat-shaded, multitextured, any width, maybe stippled, separate specular + * color interpolation. + */ +static void flat_multitextured_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count = ctx->PB->count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLdepth *pbz = ctx->PB->z; + GLfixed *pbfog = ctx->PB->fog; + GLchan (*pbrgba)[4] = ctx->PB->rgba; + GLchan (*pbspec)[3] = ctx->PB->spec; + GLchan *color = ctx->VB->ColorPtr->data[pvert]; + GLchan sRed = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][0] : 0; + GLchan sGreen = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][1] : 0; + GLchan sBlue = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][2] : 0; + + (void) pvert; + + ctx->PB->mono = GL_FALSE; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_ALPHA 1 +#define INTERP_MULTITEX 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + GLuint u; \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = color[0]; \ + pbrgba[count][GCOMP] = color[1]; \ + pbrgba[count][BCOMP] = color[2]; \ + pbrgba[count][ACOMP] = color[3]; \ + pbspec[count][RCOMP] = sRed; \ + pbspec[count][GCOMP] = sGreen; \ + pbspec[count][BCOMP] = sBlue; \ + for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { \ + if (ctx->Texture.Unit[u].ReallyEnabled) { \ + ctx->PB->s[u][0] = fragTexcoord[u][0]; \ + ctx->PB->s[u][1] = fragTexcoord[u][1]; \ + ctx->PB->s[u][2] = fragTexcoord[u][2]; \ + ctx->PB->s[u][3] = fragTexcoord[u][3]; \ + } \ + } \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_ALPHA 1 +#define INTERP_MULTITEX 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + GLuint u; \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbfog[count] = fog0; \ + pbrgba[count][RCOMP] = color[0]; \ + pbrgba[count][GCOMP] = color[1]; \ + pbrgba[count][BCOMP] = color[2]; \ + pbrgba[count][ACOMP] = color[3]; \ + pbspec[count][RCOMP] = sRed; \ + pbspec[count][GCOMP] = sGreen; \ + pbspec[count][BCOMP] = sBlue; \ + for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { \ + if (ctx->Texture.Unit[u].ReallyEnabled) { \ + ctx->PB->s[u][0] = fragTexcoord[u][0]; \ + ctx->PB->s[u][1] = fragTexcoord[u][1]; \ + ctx->PB->s[u][2] = fragTexcoord[u][2]; \ + ctx->PB->s[u][3] = fragTexcoord[u][3]; \ + } \ + } \ + count++; \ + CHECK_FULL(count); \ + } +#include "s_linetemp.h" + } + + ctx->PB->count = count; + gl_flush_pb(ctx); +} + + + + +/* + * Antialiased RGBA line + * + * This AA line function isn't terribly efficient but it's pretty + * straight-forward to understand. Also, it doesn't exactly conform + * to the specification. + */ +static void aa_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ +#define INTERP_RGBA 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_RGBA_PIXEL( pb, (x), (y), z, fog0, \ + red, green, blue, coverage ); \ + } +#include "s_lnaatemp.h" +} + +/* + * Antialiased Textured RGBA line + * + * This AA line function isn't terribly efficient but it's pretty + * straight-forward to understand. Also, it doesn't exactly conform + * to the specification. + */ +static void aa_tex_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ +#define INTERP_RGBA 1 +#define INTERP_TEX 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_TEX_PIXEL( pb, (x), (y), z, fog0, \ + red, green, blue, coverage, \ + fragTexcoord[0], fragTexcoord[1], fragTexcoord[2] ); \ + } +#include "s_lnaatemp.h" +} + + +/* + * Antialiased Multitextured RGBA line + * + * This AA line function isn't terribly efficient but it's pretty + * straight-forward to understand. Also, it doesn't exactly conform + * to the specification. + */ +static void aa_multitex_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ +#define INTERP_RGBA 1 +#define INTERP_SPEC 1 +#define INTERP_MULTITEX 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_MULTITEX_SPEC_PIXEL( pb, (x), (y), z, fog0, \ + red, green, blue, coverage, specRed, specGreen, specBlue, \ + fragTexcoord ); \ + } +#include "s_lnaatemp.h" +} + + +/* + * Antialiased CI line. Same comments for RGBA antialiased lines apply. + */ +static void aa_ci_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ +#define INTERP_INDEX 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_CI_PIXEL( pb, (x), (y), z, fog0, index + coverage ); \ + } +#include "s_lnaatemp.h" +} + + +/* + * Null rasterizer for measuring transformation speed. + */ +static void null_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv ) +{ + (void) ctx; + (void) v1; + (void) v2; + (void) pv; +} + + + +#ifdef DEBUG +void +_mesa_print_line_function(GLcontext *ctx) +{ + printf("Line Func == "); + if (ctx->Driver.LineFunc == flat_ci_line) + printf("flat_ci_line\n"); + else if (ctx->Driver.LineFunc == flat_ci_z_line) + printf("flat_ci_z_line\n"); + else if (ctx->Driver.LineFunc == flat_rgba_line) + printf("flat_rgba_line\n"); + else if (ctx->Driver.LineFunc == flat_rgba_z_line) + printf("flat_rgba_z_line\n"); + else if (ctx->Driver.LineFunc == smooth_ci_line) + printf("smooth_ci_line\n"); + else if (ctx->Driver.LineFunc == smooth_ci_z_line) + printf("smooth_ci_z_line\n"); + else if (ctx->Driver.LineFunc == smooth_rgba_line) + printf("smooth_rgba_line\n"); + else if (ctx->Driver.LineFunc == smooth_rgba_z_line) + printf("smooth_rgba_z_line\n"); + else if (ctx->Driver.LineFunc == general_smooth_ci_line) + printf("general_smooth_ci_line\n"); + else if (ctx->Driver.LineFunc == general_flat_ci_line) + printf("general_flat_ci_line\n"); + else if (ctx->Driver.LineFunc == general_smooth_rgba_line) + printf("general_smooth_rgba_line\n"); + else if (ctx->Driver.LineFunc == general_flat_rgba_line) + printf("general_flat_rgba_line\n"); + else if (ctx->Driver.LineFunc == flat_textured_line) + printf("flat_textured_line\n"); + else if (ctx->Driver.LineFunc == smooth_textured_line) + printf("smooth_textured_line\n"); + else if (ctx->Driver.LineFunc == smooth_multitextured_line) + printf("smooth_multitextured_line\n"); + else if (ctx->Driver.LineFunc == flat_multitextured_line) + printf("flat_multitextured_line\n"); + else if (ctx->Driver.LineFunc == aa_rgba_line) + printf("aa_rgba_line\n"); + else if (ctx->Driver.LineFunc == aa_tex_rgba_line) + printf("aa_tex_rgba_line\n"); + else if (ctx->Driver.LineFunc == aa_multitex_rgba_line) + printf("aa_multitex_rgba_line\n"); + else if (ctx->Driver.LineFunc == aa_ci_line) + printf("aa_ci_line\n"); + else if (ctx->Driver.LineFunc == null_line) + printf("null_line\n"); + else + printf("Driver func %p\n", ctx->Driver.LineFunc); +} +#endif + + + +/* + * Determine which line drawing function to use given the current + * rendering context. + * + * Please update the summary flag _SWRAST_NEW_LINE if you add or remove + * tests to this code. + */ +void +_swrast_set_line_function( GLcontext *ctx ) +{ + GLboolean rgbmode = ctx->Visual.RGBAflag; + /* TODO: antialiased lines */ + + if (ctx->RenderMode==GL_RENDER) { + if (ctx->NoRaster) { + ctx->Driver.LineFunc = null_line; + return; + } + if (ctx->Driver.LineFunc) { + /* Device driver will draw lines. */ + return; + } + + if (ctx->Line.SmoothFlag) { + /* antialiased lines */ + if (rgbmode) { + if (ctx->Texture.ReallyEnabled) { + if (ctx->Texture.MultiTextureEnabled + || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR + || ctx->Fog.ColorSumEnabled) + /* Multitextured! */ + ctx->Driver.LineFunc = aa_multitex_rgba_line; + else + ctx->Driver.LineFunc = aa_tex_rgba_line; + } else { + ctx->Driver.LineFunc = aa_rgba_line; + } + } + else { + ctx->Driver.LineFunc = aa_ci_line; + } + } + else if (ctx->Texture.ReallyEnabled) { + if (ctx->Texture.MultiTextureEnabled + || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR + || ctx->Fog.ColorSumEnabled) { + /* multi-texture and/or separate specular color */ + if (ctx->Light.ShadeModel==GL_SMOOTH) + ctx->Driver.LineFunc = smooth_multitextured_line; + else + ctx->Driver.LineFunc = flat_multitextured_line; + } + else { + if (ctx->Light.ShadeModel==GL_SMOOTH) { + ctx->Driver.LineFunc = smooth_textured_line; + } + else { + ctx->Driver.LineFunc = flat_textured_line; + } + } + } + else if (ctx->Line.Width!=1.0 || ctx->Line.StippleFlag + || ctx->Line.SmoothFlag) { + if (ctx->Light.ShadeModel==GL_SMOOTH) { + if (rgbmode) + ctx->Driver.LineFunc = general_smooth_rgba_line; + else + ctx->Driver.LineFunc = general_smooth_ci_line; + } + else { + if (rgbmode) + ctx->Driver.LineFunc = general_flat_rgba_line; + else + ctx->Driver.LineFunc = general_flat_ci_line; + } + } + else { + if (ctx->Light.ShadeModel==GL_SMOOTH) { + /* Width==1, non-stippled, smooth-shaded */ + if (ctx->Depth.Test || ctx->Fog.Enabled) { + if (rgbmode) + ctx->Driver.LineFunc = smooth_rgba_z_line; + else + ctx->Driver.LineFunc = smooth_ci_z_line; + } + else { + if (rgbmode) + ctx->Driver.LineFunc = smooth_rgba_line; + else + ctx->Driver.LineFunc = smooth_ci_line; + } + } + else { + /* Width==1, non-stippled, flat-shaded */ + if (ctx->Depth.Test || ctx->Fog.Enabled) { + if (rgbmode) + ctx->Driver.LineFunc = flat_rgba_z_line; + else + ctx->Driver.LineFunc = flat_ci_z_line; + } + else { + if (rgbmode) + ctx->Driver.LineFunc = flat_rgba_line; + else + ctx->Driver.LineFunc = flat_ci_line; + } + } + } + } + else if (ctx->RenderMode==GL_FEEDBACK) { + ctx->Driver.LineFunc = gl_feedback_line; + } + else { + /* GL_SELECT mode */ + ctx->Driver.LineFunc = gl_select_line; + } + + /*_mesa_print_line_function(ctx);*/ +} -- cgit v1.2.3