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author | marha <marha@users.sourceforge.net> | 2012-01-13 16:54:57 +0100 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2012-01-13 16:54:57 +0100 |
commit | 5cfbe97cd797d8f78ece208bb5114704b83d8aab (patch) | |
tree | 5c88c73ee39367742bb5547ef6fb5a3d25d656e0 /mesalib/src/mesa/swrast/s_aalinetemp.h | |
parent | 39324211d7a79ef8115fd1e39771a2e400b31993 (diff) | |
download | vcxsrv-5cfbe97cd797d8f78ece208bb5114704b83d8aab.tar.gz vcxsrv-5cfbe97cd797d8f78ece208bb5114704b83d8aab.tar.bz2 vcxsrv-5cfbe97cd797d8f78ece208bb5114704b83d8aab.zip |
libxtrans libXdmcp libxcb mesa xserver git update 13 jan 2012
Diffstat (limited to 'mesalib/src/mesa/swrast/s_aalinetemp.h')
-rw-r--r-- | mesalib/src/mesa/swrast/s_aalinetemp.h | 484 |
1 files changed, 242 insertions, 242 deletions
diff --git a/mesalib/src/mesa/swrast/s_aalinetemp.h b/mesalib/src/mesa/swrast/s_aalinetemp.h index 7c535669b..376ef32d0 100644 --- a/mesalib/src/mesa/swrast/s_aalinetemp.h +++ b/mesalib/src/mesa/swrast/s_aalinetemp.h @@ -1,242 +1,242 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2007 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.
- */
-
-
-/*
- * Antialiased line template.
- */
-
-
-/*
- * Function to render each fragment in the AA line.
- * \param ix - integer fragment window X coordiante
- * \param iy - integer fragment window Y coordiante
- */
-static void
-NAME(plot)(struct gl_context *ctx, struct LineInfo *line, int ix, int iy)
-{
- const SWcontext *swrast = SWRAST_CONTEXT(ctx);
- const GLfloat fx = (GLfloat) ix;
- const GLfloat fy = (GLfloat) iy;
- const GLfloat coverage = compute_coveragef(line, ix, iy);
- const GLuint i = line->span.end;
-
- (void) swrast;
-
- if (coverage == 0.0)
- return;
-
- line->span.end++;
- line->span.array->coverage[i] = coverage;
- line->span.array->x[i] = ix;
- line->span.array->y[i] = iy;
-
- /*
- * Compute Z, color, texture coords, fog for the fragment by
- * solving the plane equations at (ix,iy).
- */
-#ifdef DO_Z
- line->span.array->z[i] = (GLuint) solve_plane(fx, fy, line->zPlane);
-#endif
- line->span.array->rgba[i][RCOMP] = solve_plane_chan(fx, fy, line->rPlane);
- line->span.array->rgba[i][GCOMP] = solve_plane_chan(fx, fy, line->gPlane);
- line->span.array->rgba[i][BCOMP] = solve_plane_chan(fx, fy, line->bPlane);
- line->span.array->rgba[i][ACOMP] = solve_plane_chan(fx, fy, line->aPlane);
-#if defined(DO_ATTRIBS)
- ATTRIB_LOOP_BEGIN
- GLfloat (*attribArray)[4] = line->span.array->attribs[attr];
- if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0
- && !ctx->FragmentProgram._Current) {
- /* texcoord w/ divide by Q */
- const GLuint unit = attr - FRAG_ATTRIB_TEX0;
- const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);
- GLuint c;
- for (c = 0; c < 3; c++) {
- attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invQ;
- }
- line->span.array->lambda[unit][i]
- = compute_lambda(line->attrPlane[attr][0],
- line->attrPlane[attr][1], invQ,
- line->texWidth[attr], line->texHeight[attr]);
- }
- else {
- /* non-texture attrib */
- const GLfloat invW = solve_plane_recip(fx, fy, line->wPlane);
- GLuint c;
- for (c = 0; c < 4; c++) {
- attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invW;
- }
- }
- ATTRIB_LOOP_END
-#endif
-
- if (line->span.end == MAX_WIDTH) {
- _swrast_write_rgba_span(ctx, &(line->span));
- line->span.end = 0; /* reset counter */
- }
-}
-
-
-
-/*
- * Line setup
- */
-static void
-NAME(line)(struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1)
-{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLfloat tStart, tEnd; /* segment start, end along line length */
- GLboolean inSegment;
- GLint iLen, i;
-
- /* Init the LineInfo struct */
- struct LineInfo line;
- line.x0 = v0->attrib[FRAG_ATTRIB_WPOS][0];
- line.y0 = v0->attrib[FRAG_ATTRIB_WPOS][1];
- line.x1 = v1->attrib[FRAG_ATTRIB_WPOS][0];
- line.y1 = v1->attrib[FRAG_ATTRIB_WPOS][1];
- line.dx = line.x1 - line.x0;
- line.dy = line.y1 - line.y0;
- line.len = SQRTF(line.dx * line.dx + line.dy * line.dy);
- line.halfWidth = 0.5F * CLAMP(ctx->Line.Width,
- ctx->Const.MinLineWidthAA,
- ctx->Const.MaxLineWidthAA);
-
- if (line.len == 0.0 || IS_INF_OR_NAN(line.len))
- return;
-
- INIT_SPAN(line.span, GL_LINE);
- line.span.arrayMask = SPAN_XY | SPAN_COVERAGE;
- line.span.facing = swrast->PointLineFacing;
- line.xAdj = line.dx / line.len * line.halfWidth;
- line.yAdj = line.dy / line.len * line.halfWidth;
-
-#ifdef DO_Z
- line.span.arrayMask |= SPAN_Z;
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->attrib[FRAG_ATTRIB_WPOS][2], v1->attrib[FRAG_ATTRIB_WPOS][2], line.zPlane);
-#endif
- line.span.arrayMask |= SPAN_RGBA;
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->color[RCOMP], v1->color[RCOMP], line.rPlane);
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->color[GCOMP], v1->color[GCOMP], line.gPlane);
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->color[BCOMP], v1->color[BCOMP], line.bPlane);
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->color[ACOMP], v1->color[ACOMP], line.aPlane);
- }
- else {
- constant_plane(v1->color[RCOMP], line.rPlane);
- constant_plane(v1->color[GCOMP], line.gPlane);
- constant_plane(v1->color[BCOMP], line.bPlane);
- constant_plane(v1->color[ACOMP], line.aPlane);
- }
-#if defined(DO_ATTRIBS)
- {
- const GLfloat invW0 = v0->attrib[FRAG_ATTRIB_WPOS][3];
- const GLfloat invW1 = v1->attrib[FRAG_ATTRIB_WPOS][3];
- line.span.arrayMask |= SPAN_LAMBDA;
- compute_plane(line.x0, line.y0, line.x1, line.y1, invW0, invW1, line.wPlane);
- ATTRIB_LOOP_BEGIN
- GLuint c;
- if (swrast->_InterpMode[attr] == GL_FLAT) {
- for (c = 0; c < 4; c++) {
- constant_plane(v1->attrib[attr][c], line.attrPlane[attr][c]);
- }
- }
- else {
- for (c = 0; c < 4; c++) {
- const GLfloat a0 = v0->attrib[attr][c] * invW0;
- const GLfloat a1 = v1->attrib[attr][c] * invW1;
- compute_plane(line.x0, line.y0, line.x1, line.y1, a0, a1,
- line.attrPlane[attr][c]);
- }
- }
- line.span.arrayAttribs |= (1 << attr);
- if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) {
- const GLuint u = attr - FRAG_ATTRIB_TEX0;
- const struct gl_texture_object *obj = ctx->Texture.Unit[u]._Current;
- const struct gl_texture_image *texImage = obj->Image[0][obj->BaseLevel];
- line.texWidth[attr] = (GLfloat) texImage->Width;
- line.texHeight[attr] = (GLfloat) texImage->Height;
- }
- ATTRIB_LOOP_END
- }
-#endif
-
- tStart = tEnd = 0.0;
- inSegment = GL_FALSE;
- iLen = (GLint) line.len;
-
- if (ctx->Line.StippleFlag) {
- for (i = 0; i < iLen; i++) {
- const GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf;
- if ((1 << bit) & ctx->Line.StipplePattern) {
- /* stipple bit is on */
- const GLfloat t = (GLfloat) i / (GLfloat) line.len;
- if (!inSegment) {
- /* start new segment */
- inSegment = GL_TRUE;
- tStart = t;
- }
- else {
- /* still in the segment, extend it */
- tEnd = t;
- }
- }
- else {
- /* stipple bit is off */
- if (inSegment && (tEnd > tStart)) {
- /* draw the segment */
- segment(ctx, &line, NAME(plot), tStart, tEnd);
- inSegment = GL_FALSE;
- }
- else {
- /* still between segments, do nothing */
- }
- }
- swrast->StippleCounter++;
- }
-
- if (inSegment) {
- /* draw the final segment of the line */
- segment(ctx, &line, NAME(plot), tStart, 1.0F);
- }
- }
- else {
- /* non-stippled */
- segment(ctx, &line, NAME(plot), 0.0, 1.0);
- }
-
- _swrast_write_rgba_span(ctx, &(line.span));
-}
-
-
-
-
-#undef DO_Z
-#undef DO_ATTRIBS
-#undef NAME
+/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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. + */ + + +/* + * Antialiased line template. + */ + + +/* + * Function to render each fragment in the AA line. + * \param ix - integer fragment window X coordiante + * \param iy - integer fragment window Y coordiante + */ +static void +NAME(plot)(struct gl_context *ctx, struct LineInfo *line, int ix, int iy) +{ + const SWcontext *swrast = SWRAST_CONTEXT(ctx); + const GLfloat fx = (GLfloat) ix; + const GLfloat fy = (GLfloat) iy; + const GLfloat coverage = compute_coveragef(line, ix, iy); + const GLuint i = line->span.end; + + (void) swrast; + + if (coverage == 0.0) + return; + + line->span.end++; + line->span.array->coverage[i] = coverage; + line->span.array->x[i] = ix; + line->span.array->y[i] = iy; + + /* + * Compute Z, color, texture coords, fog for the fragment by + * solving the plane equations at (ix,iy). + */ +#ifdef DO_Z + line->span.array->z[i] = (GLuint) solve_plane(fx, fy, line->zPlane); +#endif + line->span.array->rgba[i][RCOMP] = solve_plane_chan(fx, fy, line->rPlane); + line->span.array->rgba[i][GCOMP] = solve_plane_chan(fx, fy, line->gPlane); + line->span.array->rgba[i][BCOMP] = solve_plane_chan(fx, fy, line->bPlane); + line->span.array->rgba[i][ACOMP] = solve_plane_chan(fx, fy, line->aPlane); +#if defined(DO_ATTRIBS) + ATTRIB_LOOP_BEGIN + GLfloat (*attribArray)[4] = line->span.array->attribs[attr]; + if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0 + && !ctx->FragmentProgram._Current) { + /* texcoord w/ divide by Q */ + const GLuint unit = attr - FRAG_ATTRIB_TEX0; + const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]); + GLuint c; + for (c = 0; c < 3; c++) { + attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invQ; + } + line->span.array->lambda[unit][i] + = compute_lambda(line->attrPlane[attr][0], + line->attrPlane[attr][1], invQ, + line->texWidth[attr], line->texHeight[attr]); + } + else { + /* non-texture attrib */ + const GLfloat invW = solve_plane_recip(fx, fy, line->wPlane); + GLuint c; + for (c = 0; c < 4; c++) { + attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invW; + } + } + ATTRIB_LOOP_END +#endif + + if (line->span.end == MAX_WIDTH) { + _swrast_write_rgba_span(ctx, &(line->span)); + line->span.end = 0; /* reset counter */ + } +} + + + +/* + * Line setup + */ +static void +NAME(line)(struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLfloat tStart, tEnd; /* segment start, end along line length */ + GLboolean inSegment; + GLint iLen, i; + + /* Init the LineInfo struct */ + struct LineInfo line; + line.x0 = v0->attrib[FRAG_ATTRIB_WPOS][0]; + line.y0 = v0->attrib[FRAG_ATTRIB_WPOS][1]; + line.x1 = v1->attrib[FRAG_ATTRIB_WPOS][0]; + line.y1 = v1->attrib[FRAG_ATTRIB_WPOS][1]; + line.dx = line.x1 - line.x0; + line.dy = line.y1 - line.y0; + line.len = SQRTF(line.dx * line.dx + line.dy * line.dy); + line.halfWidth = 0.5F * CLAMP(ctx->Line.Width, + ctx->Const.MinLineWidthAA, + ctx->Const.MaxLineWidthAA); + + if (line.len == 0.0 || IS_INF_OR_NAN(line.len)) + return; + + INIT_SPAN(line.span, GL_LINE); + line.span.arrayMask = SPAN_XY | SPAN_COVERAGE; + line.span.facing = swrast->PointLineFacing; + line.xAdj = line.dx / line.len * line.halfWidth; + line.yAdj = line.dy / line.len * line.halfWidth; + +#ifdef DO_Z + line.span.arrayMask |= SPAN_Z; + compute_plane(line.x0, line.y0, line.x1, line.y1, + v0->attrib[FRAG_ATTRIB_WPOS][2], v1->attrib[FRAG_ATTRIB_WPOS][2], line.zPlane); +#endif + line.span.arrayMask |= SPAN_RGBA; + if (ctx->Light.ShadeModel == GL_SMOOTH) { + compute_plane(line.x0, line.y0, line.x1, line.y1, + v0->color[RCOMP], v1->color[RCOMP], line.rPlane); + compute_plane(line.x0, line.y0, line.x1, line.y1, + v0->color[GCOMP], v1->color[GCOMP], line.gPlane); + compute_plane(line.x0, line.y0, line.x1, line.y1, + v0->color[BCOMP], v1->color[BCOMP], line.bPlane); + compute_plane(line.x0, line.y0, line.x1, line.y1, + v0->color[ACOMP], v1->color[ACOMP], line.aPlane); + } + else { + constant_plane(v1->color[RCOMP], line.rPlane); + constant_plane(v1->color[GCOMP], line.gPlane); + constant_plane(v1->color[BCOMP], line.bPlane); + constant_plane(v1->color[ACOMP], line.aPlane); + } +#if defined(DO_ATTRIBS) + { + const GLfloat invW0 = v0->attrib[FRAG_ATTRIB_WPOS][3]; + const GLfloat invW1 = v1->attrib[FRAG_ATTRIB_WPOS][3]; + line.span.arrayMask |= SPAN_LAMBDA; + compute_plane(line.x0, line.y0, line.x1, line.y1, invW0, invW1, line.wPlane); + ATTRIB_LOOP_BEGIN + GLuint c; + if (swrast->_InterpMode[attr] == GL_FLAT) { + for (c = 0; c < 4; c++) { + constant_plane(v1->attrib[attr][c], line.attrPlane[attr][c]); + } + } + else { + for (c = 0; c < 4; c++) { + const GLfloat a0 = v0->attrib[attr][c] * invW0; + const GLfloat a1 = v1->attrib[attr][c] * invW1; + compute_plane(line.x0, line.y0, line.x1, line.y1, a0, a1, + line.attrPlane[attr][c]); + } + } + line.span.arrayAttribs |= BITFIELD64_BIT(attr); + if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) { + const GLuint u = attr - FRAG_ATTRIB_TEX0; + const struct gl_texture_object *obj = ctx->Texture.Unit[u]._Current; + const struct gl_texture_image *texImage = obj->Image[0][obj->BaseLevel]; + line.texWidth[attr] = (GLfloat) texImage->Width; + line.texHeight[attr] = (GLfloat) texImage->Height; + } + ATTRIB_LOOP_END + } +#endif + + tStart = tEnd = 0.0; + inSegment = GL_FALSE; + iLen = (GLint) line.len; + + if (ctx->Line.StippleFlag) { + for (i = 0; i < iLen; i++) { + const GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf; + if ((1 << bit) & ctx->Line.StipplePattern) { + /* stipple bit is on */ + const GLfloat t = (GLfloat) i / (GLfloat) line.len; + if (!inSegment) { + /* start new segment */ + inSegment = GL_TRUE; + tStart = t; + } + else { + /* still in the segment, extend it */ + tEnd = t; + } + } + else { + /* stipple bit is off */ + if (inSegment && (tEnd > tStart)) { + /* draw the segment */ + segment(ctx, &line, NAME(plot), tStart, tEnd); + inSegment = GL_FALSE; + } + else { + /* still between segments, do nothing */ + } + } + swrast->StippleCounter++; + } + + if (inSegment) { + /* draw the final segment of the line */ + segment(ctx, &line, NAME(plot), tStart, 1.0F); + } + } + else { + /* non-stippled */ + segment(ctx, &line, NAME(plot), 0.0, 1.0); + } + + _swrast_write_rgba_span(ctx, &(line.span)); +} + + + + +#undef DO_Z +#undef DO_ATTRIBS +#undef NAME |