-/* $Id: s_aaline.c,v 1.9 2001/05/10 17:41:41 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.5.3
*
- * 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"),
*/
-#include "glheader.h"
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
#include "swrast/s_aaline.h"
-#include "swrast/s_pb.h"
#include "swrast/s_context.h"
+#include "swrast/s_span.h"
#include "swrast/swrast.h"
-#include "mtypes.h"
-#include "mmath.h"
#define SUB_PIXEL 4
/* DO_Z */
GLfloat zPlane[4];
- /* DO_FOG */
- GLfloat fPlane[4];
/* DO_RGBA */
GLfloat rPlane[4], gPlane[4], bPlane[4], aPlane[4];
/* DO_INDEX */
GLfloat iPlane[4];
- /* DO_SPEC */
- GLfloat srPlane[4], sgPlane[4], sbPlane[4];
- /* DO_TEX or DO_MULTITEX */
- GLfloat sPlane[MAX_TEXTURE_UNITS][4];
- GLfloat tPlane[MAX_TEXTURE_UNITS][4];
- GLfloat uPlane[MAX_TEXTURE_UNITS][4];
- GLfloat vPlane[MAX_TEXTURE_UNITS][4];
- GLfloat lambda[MAX_TEXTURE_UNITS];
- GLfloat texWidth[MAX_TEXTURE_UNITS], texHeight[MAX_TEXTURE_UNITS];
+ /* DO_ATTRIBS */
+ GLfloat wPlane[4];
+ GLfloat attrPlane[FRAG_ATTRIB_MAX][4][4];
+ GLfloat lambda[FRAG_ATTRIB_MAX];
+ GLfloat texWidth[FRAG_ATTRIB_MAX];
+ GLfloat texHeight[FRAG_ATTRIB_MAX];
+
+ SWspan span;
};
static INLINE GLchan
solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])
{
- GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2] + 0.5F;
- if (z < 0.0F)
+ const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
+#if CHAN_TYPE == GL_FLOAT
+ return CLAMP(z, 0.0F, CHAN_MAXF);
+#else
+ if (z < 0)
return 0;
- else if (z > CHAN_MAXF)
- return (GLchan) CHAN_MAXF;
- return (GLchan) (GLint) z;
+ else if (z > CHAN_MAX)
+ return CHAN_MAX;
+ return (GLchan) IROUND_POS(z);
+#endif
}
if (rho2 == 0.0F)
return 0.0;
else
- return log(rho2) * 1.442695 * 0.5; /* 1.442695 = 1/log(2) */
+ return (GLfloat) (LOGF(rho2) * 1.442695 * 0.5);/* 1.442695 = 1/log(2) */
}
else {
j = i++;
}
- samples[j][0] = x * dx + 0.5 * dx;
- samples[j][1] = y * dy + 0.5 * dy;
+ samples[j][0] = x * dx + 0.5F * dx;
+ samples[j][1] = y * dy + 0.5F * dy;
}
}
}
}
+/**
+ * Compute coverage value for color index mode.
+ * XXX this may not be quite correct.
+ * \return coverage in [0,15].
+ */
+static GLfloat
+compute_coveragei(const struct LineInfo *info,
+ GLint winx, GLint winy)
+{
+ return compute_coveragef(info, winx, winy) * 15.0F;
+}
+
+
-typedef void (*plot_func)(GLcontext *ctx, const struct LineInfo *line,
- struct pixel_buffer *pb, int ix, int iy);
+typedef void (*plot_func)(GLcontext *ctx, struct LineInfo *line,
+ int ix, int iy);
+
/*
segment(GLcontext *ctx,
struct LineInfo *line,
plot_func plot,
- struct pixel_buffer *pb,
GLfloat t0, GLfloat t1)
{
const GLfloat absDx = (line->dx < 0.0F) ? -line->dx : line->dx;
xLeft = x0 - line->halfWidth;
xRight = x1 + line->halfWidth;
if (line->dy >= 0.0) {
- yBot = y0 - 3.0 * line->halfWidth;
+ yBot = y0 - 3.0F * line->halfWidth;
yTop = y0 + line->halfWidth;
}
else {
yBot = y0 - line->halfWidth;
- yTop = y0 + 3.0 * line->halfWidth;
+ yTop = y0 + 3.0F * line->halfWidth;
}
}
else {
xLeft = x1 - line->halfWidth;
xRight = x0 + line->halfWidth;
if (line->dy <= 0.0) {
- yBot = y1 - 3.0 * line->halfWidth;
+ yBot = y1 - 3.0F * line->halfWidth;
yTop = y1 + line->halfWidth;
}
else {
yBot = y1 - line->halfWidth;
- yTop = y1 + 3.0 * line->halfWidth;
+ yTop = y1 + 3.0F * line->halfWidth;
}
}
GLint iy;
/* scan across the line, bottom-to-top */
for (iy = iyBot; iy < iyTop; iy++) {
- (*plot)(ctx, line, pb, ix, iy);
+ (*plot)(ctx, line, ix, iy);
}
yBot += dydx;
yTop += dydx;
yBot = y0 - line->halfWidth;
yTop = y1 + line->halfWidth;
if (line->dx >= 0.0) {
- xLeft = x0 - 3.0 * line->halfWidth;
+ xLeft = x0 - 3.0F * line->halfWidth;
xRight = x0 + line->halfWidth;
}
else {
xLeft = x0 - line->halfWidth;
- xRight = x0 + 3.0 * line->halfWidth;
+ xRight = x0 + 3.0F * line->halfWidth;
}
}
else {
yBot = y1 - line->halfWidth;
yTop = y0 + line->halfWidth;
if (line->dx <= 0.0) {
- xLeft = x1 - 3.0 * line->halfWidth;
+ xLeft = x1 - 3.0F * line->halfWidth;
xRight = x1 + line->halfWidth;
}
else {
xLeft = x1 - line->halfWidth;
- xRight = x1 + 3.0 * line->halfWidth;
+ xRight = x1 + 3.0F * line->halfWidth;
}
}
GLint ix;
/* scan across the line, left-to-right */
for (ix = ixLeft; ix < ixRight; ix++) {
- (*plot)(ctx, line, pb, ix, iy);
+ (*plot)(ctx, line, ix, iy);
}
xLeft += dxdy;
xRight += dxdy;
#define NAME(x) aa_ci_##x
#define DO_Z
-#define DO_FOG
+#define DO_ATTRIBS /* for fog */
#define DO_INDEX
#include "s_aalinetemp.h"
#define NAME(x) aa_rgba_##x
#define DO_Z
-#define DO_FOG
-#define DO_RGBA
-#include "s_aalinetemp.h"
-
-
-#define NAME(x) aa_tex_rgba_##x
-#define DO_Z
-#define DO_FOG
#define DO_RGBA
-#define DO_TEX
#include "s_aalinetemp.h"
-#define NAME(x) aa_multitex_rgba_##x
+#define NAME(x) aa_general_rgba_##x
#define DO_Z
#define DO_RGBA
-#define DO_MULTITEX
-#define DO_SPEC
+#define DO_ATTRIBS
#include "s_aalinetemp.h"
if (ctx->Visual.rgbMode) {
/* RGBA */
- if (ctx->Texture._ReallyEnabled) {
- if (swrast->_MultiTextureEnabled
- || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR
- || ctx->Fog.ColorSumEnabled)
- /* Multitextured! */
- swrast->Line = aa_multitex_rgba_line;
- else
- swrast->Line = aa_tex_rgba_line;
+ if (ctx->Texture._EnabledCoordUnits != 0
+ || ctx->FragmentProgram._Current
+ || (ctx->Light.Enabled &&
+ ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)
+ || ctx->Fog.ColorSumEnabled
+ || swrast->_FogEnabled) {
+ swrast->Line = aa_general_rgba_line;
}
else {
swrast->Line = aa_rgba_line;
projects / mesa.git / blobdiff