-/* $Id: lines.c,v 1.18 2000/10/28 18:34:48 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ *
+ * Copyright (C) 1999-2006 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 "glheader.h"
#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"
-#endif
-
-
-
-void
-_mesa_LineWidth( GLfloat width )
-{
- GET_CURRENT_CONTEXT(ctx);
- 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;
- if (ctx->Driver.LineWidth)
- (*ctx->Driver.LineWidth)(ctx, width);
- }
-}
+#include "mtypes.h"
-
-void
-_mesa_LineStipple( GLint factor, GLushort pattern )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineStipple");
- ctx->Line.StippleFactor = CLAMP( factor, 1, 256 );
- ctx->Line.StipplePattern = pattern;
- ctx->NewState |= NEW_RASTER_OPS;
-
- if (ctx->Driver.LineStipple)
- ctx->Driver.LineStipple( ctx, factor, pattern );
-}
-
-
-
-/**********************************************************************/
-/***** 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.
+/**
+ * Set the line width.
+ *
+ * \param width line width in pixels.
+ *
+ * \sa glLineWidth().
*/
-
-
-
-
-
-
-#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 "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 )
+static ALWAYS_INLINE void
+line_width(struct gl_context *ctx, GLfloat width, bool no_error)
{
- 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 "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 "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 "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 "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 "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 "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 "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 "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 "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 "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 width is unchanged, there can't be an error */
+ if (ctx->Line.Width == width)
+ return;
- 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 "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 "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 "linetemp.h"
- }
+ if (!no_error && width <= 0.0F) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
+ return;
}
- 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 "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 "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 "linetemp.h"
- }
+ /* Page 407 (page 423 of the PDF) of the OpenGL 3.0 spec says (in the list
+ * of deprecated functionality):
+ *
+ * "Wide lines and line stipple - LineWidth is not deprecated, but
+ * values greater than 1.0 will generate an INVALID_VALUE error;"
+ *
+ * This is one of the very few cases where functionality was deprecated but
+ * *NOT* removed in a later spec. Therefore, we only disallow this in a
+ * forward compatible context.
+ */
+ if (!no_error && ctx->API == API_OPENGL_CORE
+ && ((ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+ != 0)
+ && width > 1.0F) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
+ return;
}
- 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] );
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewLineState ? 0 : _NEW_LINE);
+ ctx->NewDriverState |= ctx->DriverFlags.NewLineState;
+ ctx->Line.Width = width;
- 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 "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 "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 "linetemp.h"
- }
- }
-
- gl_flush_pb(ctx);
+ if (ctx->Driver.LineWidth)
+ ctx->Driver.LineWidth(ctx, width);
}
-/* Flat-shaded, textured, any width, maybe stippled */
-static void flat_textured_line( GLcontext *ctx,
- GLuint vert0, GLuint vert1, GLuint pv )
+void GLAPIENTRY
+_mesa_LineWidth_no_error(GLfloat width)
{
- 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 "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 "linetemp.h"
- }
-
- ctx->PB->count = count;
- gl_flush_pb(ctx);
+ GET_CURRENT_CONTEXT(ctx);
+ line_width(ctx, width, true);
}
-
-/* Smooth-shaded, textured, any width, maybe stippled */
-static void smooth_textured_line( GLcontext *ctx,
- GLuint vert0, GLuint vert1, GLuint pvert )
+void GLAPIENTRY
+_mesa_LineWidth(GLfloat width)
{
- 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;
+ GET_CURRENT_CONTEXT(ctx);
- ctx->PB->mono = GL_FALSE;
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glLineWidth %f\n", width);
- 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 "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 "linetemp.h"
- }
-
- ctx->PB->count = count;
- gl_flush_pb(ctx);
+ line_width(ctx, width, false);
}
-/* Smooth-shaded, multitextured, any width, maybe stippled, separate specular
- * color interpolation.
+/**
+ * Set the line stipple pattern.
+ *
+ * \param factor pattern scale factor.
+ * \param pattern bit pattern.
+ *
+ * \sa glLineStipple().
+ *
+ * Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On
+ * change flushes the vertices and notifies the driver via
+ * the dd_function_table::LineStipple callback.
*/
-static void smooth_multitextured_line( GLcontext *ctx,
- GLuint vert0, GLuint vert1, GLuint pvert )
+void GLAPIENTRY
+_mesa_LineStipple( GLint factor, GLushort pattern )
{
- 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 "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 "linetemp.h"
- }
-
- ctx->PB->count = count;
- gl_flush_pb(ctx);
-}
-
+ GET_CURRENT_CONTEXT(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;
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glLineStipple %d %u\n", factor, pattern);
- (void) pvert;
+ factor = CLAMP( factor, 1, 256 );
- ctx->PB->mono = GL_FALSE;
+ if (ctx->Line.StippleFactor == factor &&
+ ctx->Line.StipplePattern == pattern)
+ return;
- 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 "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 "linetemp.h"
- }
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewLineState ? 0 : _NEW_LINE);
+ ctx->NewDriverState |= ctx->DriverFlags.NewLineState;
+ ctx->Line.StippleFactor = factor;
+ ctx->Line.StipplePattern = pattern;
- ctx->PB->count = count;
- gl_flush_pb(ctx);
+ if (ctx->Driver.LineStipple)
+ ctx->Driver.LineStipple( ctx, factor, pattern );
}
-
-
-/*
- * Antialiased RGBA line
+/**
+ * Initialize the context line state.
*
- * 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 "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 "lnaatemp.h"
-}
-
-
-/*
- * Antialiased Multitextured RGBA line
+ * \param ctx GL context.
*
- * 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 "lnaatemp.h"
-}
-
-
-/*
- * Antialiased CI line. Same comments for RGBA antialiased lines apply.
+ * Initializes __struct gl_contextRec::Line and line related constants in
+ * __struct gl_contextRec::Const.
*/
-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 "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.
- */
-void gl_set_line_function( GLcontext *ctx )
+_mesa_init_line( struct gl_context * 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) {
- /* 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);*/
+ ctx->Line.SmoothFlag = GL_FALSE;
+ ctx->Line.StippleFlag = GL_FALSE;
+ ctx->Line.Width = 1.0;
+ ctx->Line.StipplePattern = 0xffff;
+ ctx->Line.StippleFactor = 1;
}
projects / mesa.git / blobdiff