-/* $Id: s_aalinetemp.h,v 1.14 2001/09/19 20:30:44 kschultz Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 7.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * 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"),
/*
* 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)(GLcontext *ctx, const struct LineInfo *line,
- struct pixel_buffer *pb, int ix, int iy)
+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);
- GLdepth z;
- GLfloat fog;
-#ifdef DO_RGBA
- GLchan red, green, blue, alpha;
-#else
- GLint index;
-#endif
- GLchan specRed, specGreen, specBlue;
- GLfloat tex[MAX_TEXTURE_UNITS][4], lambda[MAX_TEXTURE_UNITS];
+ 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
- z = (GLdepth) solve_plane(fx, fy, line->zPlane);
-#else
- z = 0.0;
-#endif
-#ifdef DO_FOG
- fog = solve_plane(fx, fy, line->fPlane);
-#else
- fog = 0.0;
-#endif
-#ifdef DO_RGBA
- red = solve_plane_chan(fx, fy, line->rPlane);
- green = solve_plane_chan(fx, fy, line->gPlane);
- blue = solve_plane_chan(fx, fy, line->bPlane);
- alpha = solve_plane_chan(fx, fy, line->aPlane);
+ line->span.array->z[i] = (GLuint) solve_plane(fx, fy, line->zPlane);
#endif
-#ifdef DO_INDEX
- index = (GLint) solve_plane(fx, fy, line->iPlane);
-#endif
-#ifdef DO_SPEC
- specRed = solve_plane_chan(fx, fy, line->srPlane);
- specGreen = solve_plane_chan(fx, fy, line->sgPlane);
- specBlue = solve_plane_chan(fx, fy, line->sbPlane);
-#else
- (void) specRed;
- (void) specGreen;
- (void) specBlue;
-#endif
-#ifdef DO_TEX
- {
- GLfloat invQ = solve_plane_recip(fx, fy, line->vPlane[0]);
- tex[0][0] = solve_plane(fx, fy, line->sPlane[0]) * invQ;
- tex[0][1] = solve_plane(fx, fy, line->tPlane[0]) * invQ;
- tex[0][2] = solve_plane(fx, fy, line->uPlane[0]) * invQ;
- lambda[0] = compute_lambda(line->sPlane[0], line->tPlane[0], invQ,
- line->texWidth[0], line->texHeight[0]);
- }
-#elif defined(DO_MULTITEX)
- {
- GLuint unit;
- for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- if (ctx->Texture.Unit[unit]._ReallyEnabled) {
- GLfloat invQ = solve_plane_recip(fx, fy, line->vPlane[unit]);
- tex[unit][0] = solve_plane(fx, fy, line->sPlane[unit]) * invQ;
- tex[unit][1] = solve_plane(fx, fy, line->tPlane[unit]) * invQ;
- tex[unit][2] = solve_plane(fx, fy, line->uPlane[unit]) * invQ;
- lambda[unit] = compute_lambda(line->sPlane[unit],
- line->tPlane[unit], invQ,
- line->texWidth[unit], line->texHeight[unit]);
+ 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
+ && !_swrast_use_fragment_program(ctx)) {
+ /* 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
- (void) tex[0][0];
- (void) lambda[0];
-#endif
-
-
- PB_COVERAGE(pb, coverage);
-
-#if defined(DO_MULTITEX)
-#if defined(DO_SPEC)
- PB_WRITE_MULTITEX_SPEC_PIXEL(pb, ix, iy, z, fog, red, green, blue, alpha,
- specRed, specGreen, specBlue, tex);
-#else
- PB_WRITE_MULTITEX_PIXEL(pb, ix, iy, z, fog, red, green, blue, alpha, tex);
-#endif
-#elif defined(DO_TEX)
- PB_WRITE_TEX_PIXEL(pb, ix, iy, z, fog, red, green, blue, alpha,
- tex[0][0], tex[0][1], tex[0][2]);
-#elif defined(DO_RGBA)
- PB_WRITE_RGBA_PIXEL(pb, ix, iy, z, fog, red, green, blue, alpha);
-#elif defined(DO_INDEX)
- PB_WRITE_CI_PIXEL(pb, ix, iy, z, fog, index);
+ 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
- pb->haveCoverage = GL_TRUE;
- PB_CHECK_FLUSH(ctx, pb);
+ 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)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
+NAME(line)(struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- struct pixel_buffer *pb = SWRAST_CONTEXT(ctx)->PB;
GLfloat tStart, tEnd; /* segment start, end along line length */
GLboolean inSegment;
GLint iLen, i;
/* Init the LineInfo struct */
struct LineInfo line;
- line.x0 = v0->win[0];
- line.y0 = v0->win[1];
- line.x1 = v1->win[0];
- line.y1 = v1->win[1];
+ 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 = (GLfloat) sqrt(line.dx * line.dx + line.dy * line.dy);
- line.halfWidth = 0.5F * ctx->Line.Width;
+ 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)
+ 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->win[2], v1->win[2], line.zPlane);
+ v0->attrib[FRAG_ATTRIB_WPOS][2], v1->attrib[FRAG_ATTRIB_WPOS][2], line.zPlane);
#endif
-#ifdef DO_FOG
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->fog, v1->fog, line.fPlane);
-#endif
-#ifdef DO_RGBA
+ 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);
constant_plane(v1->color[BCOMP], line.bPlane);
constant_plane(v1->color[ACOMP], line.aPlane);
}
-#endif
-#ifdef DO_SPEC
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->specular[RCOMP], v1->specular[RCOMP], line.srPlane);
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->specular[GCOMP], v1->specular[GCOMP], line.sgPlane);
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->specular[BCOMP], v1->specular[BCOMP], line.sbPlane);
- }
- else {
- constant_plane(v1->specular[RCOMP], line.srPlane);
- constant_plane(v1->specular[GCOMP], line.sgPlane);
- constant_plane(v1->specular[BCOMP], line.sbPlane);
- }
-#endif
-#ifdef DO_INDEX
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- (GLfloat) v0->index, (GLfloat) v1->index, line.iPlane);
- }
- else {
- constant_plane((GLfloat) v1->index, line.iPlane);
- }
-#endif
-#ifdef DO_TEX
- {
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current;
- const struct gl_texture_image *texImage = obj->Image[obj->BaseLevel];
- const GLfloat invW0 = v0->win[3];
- const GLfloat invW1 = v1->win[3];
- const GLfloat s0 = v0->texcoord[0][0] * invW0;
- const GLfloat s1 = v1->texcoord[0][0] * invW1;
- const GLfloat t0 = v0->texcoord[0][1] * invW0;
- const GLfloat t1 = v1->texcoord[0][1] * invW0;
- const GLfloat r0 = v0->texcoord[0][2] * invW0;
- const GLfloat r1 = v1->texcoord[0][2] * invW0;
- const GLfloat q0 = v0->texcoord[0][3] * invW0;
- const GLfloat q1 = v1->texcoord[0][3] * invW0;
- compute_plane(line.x0, line.y0, line.x1, line.y1, s0, s1, line.sPlane[0]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, t0, t1, line.tPlane[0]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, r0, r1, line.uPlane[0]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, q0, q1, line.vPlane[0]);
- line.texWidth[0] = (GLfloat) texImage->Width;
- line.texHeight[0] = (GLfloat) texImage->Height;
- }
-#elif defined(DO_MULTITEX)
+#if defined(DO_ATTRIBS)
{
- GLuint u;
- for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
- if (ctx->Texture.Unit[u]._ReallyEnabled) {
+ 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[obj->BaseLevel];
- const GLfloat invW0 = v0->win[3];
- const GLfloat invW1 = v1->win[3];
- const GLfloat s0 = v0->texcoord[u][0] * invW0;
- const GLfloat s1 = v1->texcoord[u][0] * invW1;
- const GLfloat t0 = v0->texcoord[u][1] * invW0;
- const GLfloat t1 = v1->texcoord[u][1] * invW0;
- const GLfloat r0 = v0->texcoord[u][2] * invW0;
- const GLfloat r1 = v1->texcoord[u][2] * invW0;
- const GLfloat q0 = v0->texcoord[u][3] * invW0;
- const GLfloat q1 = v1->texcoord[u][3] * invW0;
- compute_plane(line.x0, line.y0, line.x1, line.y1, s0, s1, line.sPlane[u]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, t0, t1, line.tPlane[u]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, r0, r1, line.uPlane[u]);
- compute_plane(line.x0, line.y0, line.x1, line.y1, q0, q1, line.vPlane[u]);
- line.texWidth[u] = (GLfloat) texImage->Width;
- line.texHeight[u] = (GLfloat) texImage->Height;
+ 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
/* stipple bit is off */
if (inSegment && (tEnd > tStart)) {
/* draw the segment */
- segment(ctx, &line, NAME(plot), pb, tStart, tEnd);
+ segment(ctx, &line, NAME(plot), tStart, tEnd);
inSegment = GL_FALSE;
}
else {
if (inSegment) {
/* draw the final segment of the line */
- segment(ctx, &line, NAME(plot), pb, tStart, 1.0F);
+ segment(ctx, &line, NAME(plot), tStart, 1.0F);
}
}
else {
/* non-stippled */
- segment(ctx, &line, NAME(plot), pb, 0.0, 1.0);
+ segment(ctx, &line, NAME(plot), 0.0, 1.0);
}
+
+ _swrast_write_rgba_span(ctx, &(line.span));
}
#undef DO_Z
-#undef DO_FOG
-#undef DO_RGBA
-#undef DO_INDEX
-#undef DO_SPEC
-#undef DO_TEX
-#undef DO_MULTITEX
+#undef DO_ATTRIBS
#undef NAME
projects / mesa.git / blobdiff