From afb833d4e89c312460a4ab9ed6a7a8ca4ebbfe1c Mon Sep 17 00:00:00 2001 From: jtg Date: Thu, 19 Aug 1999 00:55:39 +0000 Subject: Initial revision --- src/mesa/main/lines.c | 1146 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1146 insertions(+) create mode 100644 src/mesa/main/lines.c (limited to 'src/mesa/main/lines.c') diff --git a/src/mesa/main/lines.c b/src/mesa/main/lines.c new file mode 100644 index 0000000000..ed671d7a82 --- /dev/null +++ b/src/mesa/main/lines.c @@ -0,0 +1,1146 @@ +/* $Id: lines.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.1 + * + * Copyright (C) 1999 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. + */ + + + + + +#ifdef PC_HEADER +#include "all.h" +#else +#include +#include "context.h" +#include "depth.h" +#include "feedback.h" +#include "lines.h" +#include "macros.h" +#include "mmath.h" +#include "pb.h" +#include "texstate.h" +#include "types.h" +#include "vb.h" +#ifdef XFree86Server +#include "GL/xf86glx.h" +#endif +#endif + + + +void gl_LineWidth( GLcontext *ctx, GLfloat width ) +{ + if (width<=0.0) { + gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" ); + return; + } + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineWidth"); + + if (ctx->Line.Width != width) { + ctx->Line.Width = width; + ctx->TriangleCaps &= ~DD_LINE_WIDTH; + if (width != 1.0) ctx->TriangleCaps |= DD_LINE_WIDTH; + ctx->NewState |= NEW_RASTER_OPS; + } +} + + + +void gl_LineStipple( GLcontext *ctx, GLint factor, GLushort pattern ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineStipple"); + ctx->Line.StippleFactor = CLAMP( factor, 1, 256 ); + ctx->Line.StipplePattern = pattern; + ctx->NewState |= NEW_RASTER_OPS; +} + + + +/**********************************************************************/ +/***** 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. + */ + + + +static void feedback_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv ) +{ + struct vertex_buffer *VB = ctx->VB; + GLfloat x1, y1, z1, w1; + GLfloat x2, y2, z2, w2; + GLfloat tex1[4], tex2[4], invq; + GLuint texUnit = ctx->Texture.CurrentTransformUnit; + + x1 = VB->Win.data[v1][0]; + y1 = VB->Win.data[v1][1]; + z1 = VB->Win.data[v1][2] / DEPTH_SCALE; + w1 = (VB->ClipPtr->size == 4 ? VEC_ELT(VB->ClipPtr, GLfloat, v1)[3] : 1.0); + + x2 = VB->Win.data[v2][0]; + y2 = VB->Win.data[v2][1]; + z2 = VB->Win.data[v2][2] / DEPTH_SCALE; + w2 = (VB->ClipPtr->size == 4 ? VEC_ELT(VB->ClipPtr, GLfloat, v2)[3] : 1.0); + + + if (VB->TexCoordPtr[texUnit]->size == 4) { + invq = (VB->TexCoordPtr[texUnit]->data[v1][3]==0.0 + ? 1.0 + : 1.0F / VB->TexCoordPtr[texUnit]->data[v1][3]); + + tex1[0] = VB->TexCoordPtr[texUnit]->data[v1][0] * invq; + tex1[1] = VB->TexCoordPtr[texUnit]->data[v1][1] * invq; + tex1[2] = VB->TexCoordPtr[texUnit]->data[v1][2] * invq; + tex1[3] = VB->TexCoordPtr[texUnit]->data[v1][3]; + + invq = (VB->TexCoordPtr[texUnit]->data[v2][3]==0.0 + ? 1.0 + : 1.0F / VB->TexCoordPtr[texUnit]->data[v2][3]); + + tex2[0] = VB->TexCoordPtr[texUnit]->data[v2][0] * invq; + tex2[1] = VB->TexCoordPtr[texUnit]->data[v2][1] * invq; + tex2[2] = VB->TexCoordPtr[texUnit]->data[v2][2] * invq; + tex2[3] = VB->TexCoordPtr[texUnit]->data[v2][3]; + } else { + ASSIGN_4V(tex1, 0,0,0,1); + ASSIGN_4V(tex2, 0,0,0,1); + COPY_SZ_4V(tex1, + VB->TexCoordPtr[texUnit]->size, + VB->TexCoordPtr[texUnit]->data[v1]); + COPY_SZ_4V(tex2, + VB->TexCoordPtr[texUnit]->size, + VB->TexCoordPtr[texUnit]->data[v2]); + } + + + if (ctx->StippleCounter==0) { + FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_LINE_RESET_TOKEN ); + } + else { + FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_LINE_TOKEN ); + } + + { + GLfloat color[4]; + GLubyte *ubc = VB->ColorPtr->data[pv]; + GLuint index = VB->IndexPtr->data[pv]; + + UBYTE_RGBA_TO_FLOAT_RGBA( color, ubc ); + gl_feedback_vertex( ctx, x1,y1,z1,w1, color, (GLfloat) index, tex1 ); + gl_feedback_vertex( ctx, x2,y2,z2,w2, color, (GLfloat) index, tex2 ); + } + + ctx->StippleCounter++; +} + + + +static void select_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv ) +{ + (void) pv; + gl_update_hitflag( ctx, ctx->VB->Win.data[v1][2] / DEPTH_SCALE ); + gl_update_hitflag( ctx, ctx->VB->Win.data[v2][2] / DEPTH_SCALE ); +} + + + +#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 ) +{ + GLint count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + PB_SET_INDEX( ctx, ctx->PB, ctx->VB->IndexPtr->data[pvert] ); + count = ctx->PB->count; + +#define INTERP_XY 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* Flat, color index line with Z interpolation/testing */ +static void flat_ci_z_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; + PB_SET_INDEX( ctx, ctx->PB, ctx->VB->IndexPtr->data[pvert] ); + count = ctx->PB->count; + +#define INTERP_XY 1 +#define INTERP_Z 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* Flat-shaded, RGBA line */ +static void flat_rgba_line( GLcontext *ctx, + GLuint vert0, GLuint vert1, GLuint pvert ) +{ + GLint count; + GLint *pbx = ctx->PB->x; + GLint *pby = ctx->PB->y; + GLubyte *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] ); + count = ctx->PB->count; + +#define INTERP_XY 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* Flat-shaded, RGBA line with Z interpolation/testing */ +static void flat_rgba_z_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; + GLubyte *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] ); + count = ctx->PB->count; + +#define INTERP_XY 1 +#define INTERP_Z 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* 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->i; + (void) pvert; + +#define INTERP_XY 1 +#define INTERP_INDEX 1 + +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbi[count] = I; \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* 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->i; + (void) pvert; + +#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 "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* 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; + GLubyte (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + +#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 "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* 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; + GLubyte (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + +#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; \ + pbrgba[count][RCOMP] = FixedToInt(r0); \ + pbrgba[count][GCOMP] = FixedToInt(g0); \ + pbrgba[count][BCOMP] = FixedToInt(b0); \ + pbrgba[count][ACOMP] = FixedToInt(a0); \ + count++; + +#include "linetemp.h" + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +#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; + GLuint *pbi = ctx->PB->i; + (void) pvert; + + 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; \ + pbi[count] = I; \ + count++; \ + CHECK_FULL(count); +#include "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; \ + 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; \ + pbi[count] = I; pbi[count+1] = I; \ + count += 2; \ + CHECK_FULL(count); +#include "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; \ + count++; \ + CHECK_FULL(count); +#include "linetemp.h" + } + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +/* 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; + PB_SET_INDEX( ctx, 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; \ + count++; \ + CHECK_FULL(count); +#include "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; \ + 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; \ + count += 2; \ + CHECK_FULL(count); +#include "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; \ + count++; \ + CHECK_FULL(count); +#include "linetemp.h" + } + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +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; + GLubyte (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + + 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; \ + 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 "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; \ + 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; \ + 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 "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; \ + 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 "linetemp.h" + } + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +static void general_flat_rgba_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; + GLubyte *color = ctx->VB->ColorPtr->data[pvert]; + PB_SET_COLOR( ctx, 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 WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + count++; \ + CHECK_FULL(count); +#include "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; \ + 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; \ + count += 2; \ + CHECK_FULL(count); +#include "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; \ + count++; \ + CHECK_FULL(count); +#include "linetemp.h" + } + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +/* 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; + GLfloat *pbs = ctx->PB->s[0]; + GLfloat *pbt = ctx->PB->t[0]; + GLfloat *pbu = ctx->PB->u[0]; + GLubyte *color = ctx->VB->ColorPtr->data[pv]; + PB_SET_COLOR( ctx, 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_STUV0 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + count++; \ + CHECK_FULL(count); \ + } +#include "linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_STUV0 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + count++; \ + CHECK_FULL(count); \ + } +#include "linetemp.h" + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + + +/* 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; + GLfloat *pbs = ctx->PB->s[0]; + GLfloat *pbt = ctx->PB->t[0]; + GLfloat *pbu = ctx->PB->u[0]; + GLubyte (*pbrgba)[4] = ctx->PB->rgba; + (void) pvert; + + if (ctx->Line.StippleFlag) { + /* stippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define INTERP_STUV0 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + 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 "linetemp.h" + } + else { + /* unstippled */ +#define INTERP_XY 1 +#define INTERP_Z 1 +#define INTERP_RGB 1 +#define INTERP_ALPHA 1 +#define INTERP_STUV0 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + 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 "linetemp.h" + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +/* 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; + GLfloat *pbs = ctx->PB->s[0]; + GLfloat *pbt = ctx->PB->t[0]; + GLfloat *pbu = ctx->PB->u[0]; + GLfloat *pbs1 = ctx->PB->s[1]; + GLfloat *pbt1 = ctx->PB->t[1]; + GLfloat *pbu1 = ctx->PB->u[1]; + GLubyte (*pbrgba)[4] = ctx->PB->rgba; + GLubyte (*pbspec)[3] = ctx->PB->spec; + (void) pvert; + + 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_STUV0 1 +#define INTERP_STUV1 1 +#define WIDE 1 +#define STIPPLE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + pbs1[count] = s1; \ + pbt1[count] = t1; \ + pbu1[count] = u1; \ + 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); \ + count++; \ + CHECK_FULL(count); \ + } +#include "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_STUV0 1 +#define INTERP_STUV1 1 +#define WIDE 1 +#define PLOT(X,Y) \ + { \ + pbx[count] = X; \ + pby[count] = Y; \ + pbz[count] = Z; \ + pbs[count] = s; \ + pbt[count] = t; \ + pbu[count] = u; \ + pbs1[count] = s1; \ + pbt1[count] = t1; \ + pbu1[count] = u1; \ + 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); \ + count++; \ + CHECK_FULL(count); \ + } +#include "linetemp.h" + } + + ctx->PB->count = count; + PB_CHECK_FLUSH( ctx, ctx->PB ); +} + + +/* + * 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, red, green, blue, coverage ); } +#include "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_STUV0 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_TEX_PIXEL( pb, (x), (y), z, red, green, blue, coverage, \ + s, t, u ); \ + } +#include "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_STUV0 1 +#define INTERP_STUV1 1 +#define PLOT(x, y) \ + { \ + PB_WRITE_MULTITEX_SPEC_PIXEL( pb, (x), (y), z, \ + red, green, blue, coverage, specRed, specGreen, specBlue, \ + s, t, u, s1, t1, u1 ); \ + } +#include "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, index + coverage ); \ + } +#include "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; +} + + +/* + * Determine which line drawing function to use given the current + * rendering context. + */ +void gl_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.ReallyEnabled >= TEXTURE1_1D + || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) + /* 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.ReallyEnabled >= TEXTURE1_1D + || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) { + /* multi-texture and/or separate specular color */ + ctx->Driver.LineFunc = smooth_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 && ctx->Hint.Fog==GL_NICEST)) { + 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 && ctx->Hint.Fog==GL_NICEST)) { + 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 = feedback_line; + } + else { + /* GL_SELECT mode */ + ctx->Driver.LineFunc = select_line; + } +} + -- cgit v1.2.3