Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 419 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_pointtemp.h b/nx-X11/extras/Mesa/src/mesa/swrast/s_pointtemp.h
new file mode 100644
index 000000000..4ce261009
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/swrast/s_pointtemp.h
@@ -0,0 +1,419 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2005  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.
+ */
+
+/*
+ * Regarding GL_NV_point_sprite:
+ *
+ * Portions of this software may use or implement intellectual
+ * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims
+ * any and all warranties with respect to such intellectual property,
+ * including any use thereof or modifications thereto.
+ */
+
+
+/*
+ * Point rendering template code.
+ *
+ * Set FLAGS = bitwise-OR of the following tokens:
+ *
+ *   RGBA = do rgba instead of color index
+ *   SMOOTH = do antialiasing
+ *   TEXTURE = do texture coords
+ *   SPECULAR = do separate specular color
+ *   LARGE = do points with diameter > 1 pixel
+ *   ATTENUATE = compute point size attenuation
+ *   SPRITE = GL_ARB_point_sprite / GL_NV_point_sprite
+ *
+ * Notes: LARGE and ATTENUATE are exclusive of each other.
+ *        TEXTURE requires RGBA
+ */
+
+
+/*
+ * NOTES on antialiased point rasterization:
+ *
+ * Let d = distance of fragment center from vertex.
+ * if d < rmin2 then
+ *    fragment has 100% coverage
+ * else if d > rmax2 then
+ *    fragment has 0% coverage
+ * else
+ *    fragment has % coverage = (d - rmin2) / (rmax2 - rmin2)
+ */
+
+
+
+static void
+NAME ( GLcontext *ctx, const SWvertex *vert )
+{
+#if FLAGS & (ATTENUATE | LARGE | SMOOTH | SPRITE)
+   GLfloat size;
+#endif
+#if FLAGS & RGBA
+#if (FLAGS & ATTENUATE) && (FLAGS & SMOOTH)
+   GLfloat alphaAtten;
+#endif
+   const GLchan red   = vert->color[0];
+   const GLchan green = vert->color[1];
+   const GLchan blue  = vert->color[2];
+   const GLchan alpha = vert->color[3];
+#endif
+#if FLAGS & SPECULAR
+   const GLchan specRed   = vert->specular[0];
+   const GLchan specGreen = vert->specular[1];
+   const GLchan specBlue  = vert->specular[2];
+#endif
+#if FLAGS & INDEX
+   const GLuint colorIndex = (GLuint) vert->index; /* XXX round? */
+#endif
+#if FLAGS & TEXTURE
+   GLfloat texcoord[MAX_TEXTURE_COORD_UNITS][4];
+   GLuint u;
+#endif
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   struct sw_span *span = &(swrast->PointSpan);
+
+   /* Cull primitives with malformed coordinates.
+    */
+   {
+      float tmp = vert->win[0] + vert->win[1];
+      if (IS_INF_OR_NAN(tmp))
+	 return;
+   }
+
+   /*
+    * Span init
+    */
+   span->interpMask = SPAN_FOG;
+   span->arrayMask = SPAN_XY | SPAN_Z;
+   span->fog = vert->fog;
+   span->fogStep = 0.0;
+#if FLAGS & RGBA
+   span->arrayMask |= SPAN_RGBA;
+#endif
+#if FLAGS & SPECULAR
+   span->arrayMask |= SPAN_SPEC;
+#endif
+#if FLAGS & INDEX
+   span->arrayMask |= SPAN_INDEX;
+#endif
+#if FLAGS & TEXTURE
+   span->arrayMask |= SPAN_TEXTURE;
+   if (ctx->FragmentProgram._Active) {
+      /* Don't divide texture s,t,r by q (use TXP to do that) */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
+            COPY_4V(texcoord[u], vert->texcoord[u]);
+         }
+      }
+   }
+   else {
+      /* Divide texture s,t,r by q here */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
+            const GLfloat q = vert->texcoord[u][3];
+            const GLfloat invQ = (q == 0.0F || q == 1.0F) ? 1.0F : (1.0F / q);
+            texcoord[u][0] = vert->texcoord[u][0] * invQ;
+            texcoord[u][1] = vert->texcoord[u][1] * invQ;
+            texcoord[u][2] = vert->texcoord[u][2] * invQ;
+            texcoord[u][3] = q;
+         }
+      }
+   }
+   /* need these for fragment programs */
+   span->w = 1.0F;
+   span->dwdx = 0.0F;
+   span->dwdy = 0.0F;
+#endif
+#if FLAGS & SMOOTH
+   span->arrayMask |= SPAN_COVERAGE;
+#endif
+#if FLAGS & SPRITE
+   span->arrayMask |= SPAN_TEXTURE;
+#endif
+
+   /* Compute point size if not known to be one */
+#if FLAGS & ATTENUATE
+   /* first, clamp attenuated size to the user-specifed range */
+   size = CLAMP(vert->pointSize, ctx->Point.MinSize, ctx->Point.MaxSize);
+#if (FLAGS & RGBA) && (FLAGS & SMOOTH)
+   /* only if multisampling, compute the fade factor */
+   if (ctx->Multisample.Enabled) {
+      if (vert->pointSize >= ctx->Point.Threshold) {
+         alphaAtten = 1.0F;
+      }
+      else {
+         GLfloat dsize = vert->pointSize / ctx->Point.Threshold;
+         alphaAtten = dsize * dsize;
+      }
+   }
+   else {
+      alphaAtten = 1.0;
+   }
+#endif
+#elif FLAGS & (LARGE | SMOOTH | SPRITE)
+   /* constant, non-attenuated size */
+   size = ctx->Point._Size; /* this is already clamped */
+#endif
+
+
+#if FLAGS & (ATTENUATE | LARGE | SMOOTH | SPRITE)
+   /***
+    *** Multi-pixel points
+    ***/
+
+   /* do final clamping now */
+   if (ctx->Point.SmoothFlag) {
+      size = CLAMP(size, ctx->Const.MinPointSizeAA, ctx->Const.MaxPointSizeAA);
+   }
+   else {
+      size = CLAMP(size, ctx->Const.MinPointSize, ctx->Const.MaxPointSize);
+   }
+
+   {{
+      GLint x, y;
+      const GLfloat radius = 0.5F * size;
+      const GLint z = (GLint) (vert->win[2] + 0.5F);
+      GLuint count;
+#if FLAGS & SMOOTH
+      const GLfloat rmin = radius - 0.7071F;  /* 0.7071 = sqrt(2)/2 */
+      const GLfloat rmax = radius + 0.7071F;
+      const GLfloat rmin2 = MAX2(0.0F, rmin * rmin);
+      const GLfloat rmax2 = rmax * rmax;
+      const GLfloat cscale = 1.0F / (rmax2 - rmin2);
+      const GLint xmin = (GLint) (vert->win[0] - radius);
+      const GLint xmax = (GLint) (vert->win[0] + radius);
+      const GLint ymin = (GLint) (vert->win[1] - radius);
+      const GLint ymax = (GLint) (vert->win[1] + radius);
+#else
+      /* non-smooth */
+      GLint xmin, xmax, ymin, ymax;
+      GLint iSize = (GLint) (size + 0.5F);
+      GLint iRadius;
+      iSize = MAX2(1, iSize);
+      iRadius = iSize / 2;
+      if (iSize & 1) {
+         /* odd size */
+         xmin = (GLint) (vert->win[0] - iRadius);
+         xmax = (GLint) (vert->win[0] + iRadius);
+         ymin = (GLint) (vert->win[1] - iRadius);
+         ymax = (GLint) (vert->win[1] + iRadius);
+      }
+      else {
+         /* even size */
+         xmin = (GLint) vert->win[0] - iRadius + 1;
+         xmax = xmin + iSize - 1;
+         ymin = (GLint) vert->win[1] - iRadius + 1;
+         ymax = ymin + iSize - 1;
+      }
+#endif /*SMOOTH*/
+
+      /* check if we need to flush */
+      if (span->end + (xmax-xmin+1) * (ymax-ymin+1) >= MAX_WIDTH ||
+          (swrast->_RasterMask & (BLEND_BIT | LOGIC_OP_BIT | MASKING_BIT))) {
+#if FLAGS & RGBA
+         _swrast_write_rgba_span(ctx, span);
+#else
+         _swrast_write_index_span(ctx, span);
+#endif
+         span->end = 0;
+      }
+
+      /*
+       * OK, generate fragments
+       */
+      count = span->end;
+      (void) radius;
+      for (y = ymin; y <= ymax; y++) {
+         /* check if we need to flush */
+         if (count + (xmax-xmin+1) >= MAX_WIDTH) {
+	     span->end = count;
+#if FLAGS & RGBA
+            _swrast_write_rgba_span(ctx, span);
+#else
+            _swrast_write_index_span(ctx, span);
+#endif
+            count = span->end = 0;
+         }
+         for (x = xmin; x <= xmax; x++) {
+#if FLAGS & (SPRITE | TEXTURE)
+            GLuint u;
+#endif
+
+#if FLAGS & RGBA
+            span->array->rgba[count][RCOMP] = red;
+            span->array->rgba[count][GCOMP] = green;
+            span->array->rgba[count][BCOMP] = blue;
+            span->array->rgba[count][ACOMP] = alpha;
+#endif
+#if FLAGS & SPECULAR
+            span->array->spec[count][RCOMP] = specRed;
+            span->array->spec[count][GCOMP] = specGreen;
+            span->array->spec[count][BCOMP] = specBlue;
+#endif
+#if FLAGS & INDEX
+            span->array->index[count] = colorIndex;
+#endif
+#if FLAGS & TEXTURE
+            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+               if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
+                  COPY_4V(span->array->texcoords[u][count], texcoord[u]);
+               }
+            }
+#endif
+
+#if FLAGS & SMOOTH
+            /* compute coverage */
+            {
+               const GLfloat dx = x - vert->win[0] + 0.5F;
+               const GLfloat dy = y - vert->win[1] + 0.5F;
+               const GLfloat dist2 = dx * dx + dy * dy;
+               if (dist2 < rmax2) {
+                  if (dist2 >= rmin2) {
+                     /* compute partial coverage */
+                     span->array->coverage[count] = 1.0F - (dist2 - rmin2) * cscale;
+#if FLAGS & INDEX
+                     /* coverage in [0,15] */
+                     span->array->coverage[count] *= 15.0;
+#endif
+                  }
+                  else {
+                     /* full coverage */
+                     span->array->coverage[count] = 1.0F;
+                  }
+
+                  span->array->x[count] = x;
+                  span->array->y[count] = y;
+                  span->array->z[count] = z;
+
+#if (FLAGS & ATTENUATE) && (FLAGS & RGBA)
+                  span->array->rgba[count][ACOMP] = (GLchan) (alpha * alphaAtten);
+#elif FLAGS & RGBA
+                  span->array->rgba[count][ACOMP] = alpha;
+#endif /*ATTENUATE*/
+                  count++;
+               } /*if*/
+            }
+
+#else /*SMOOTH*/
+
+            /* not smooth (square points) */
+            span->array->x[count] = x;
+            span->array->y[count] = y;
+            span->array->z[count] = z;
+
+#if FLAGS & SPRITE
+            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+               if (ctx->Texture.Unit[u]._ReallyEnabled) {
+                  if (ctx->Point.CoordReplace[u]) {
+                     GLfloat s = 0.5F + (x + 0.5F - vert->win[0]) / size;
+                     GLfloat t, r;
+                     if (ctx->Point.SpriteOrigin == GL_LOWER_LEFT)
+                        t = 0.5F + (y + 0.5F - vert->win[1]) / size;
+                     else /* GL_UPPER_LEFT */
+                        t = 0.5F - (y + 0.5F - vert->win[1]) / size;
+                     if (ctx->Point.SpriteRMode == GL_ZERO)
+                        r = 0.0F;
+                     else if (ctx->Point.SpriteRMode == GL_S)
+                        r = vert->texcoord[u][0];
+                     else /* GL_R */
+                        r = vert->texcoord[u][2];
+                     span->array->texcoords[u][count][0] = s;
+                     span->array->texcoords[u][count][1] = t;
+                     span->array->texcoords[u][count][2] = r;
+                     span->array->texcoords[u][count][3] = 1.0F;
+                  }
+                  else {
+                     COPY_4V(span->array->texcoords[u][count], vert->texcoord[u]);
+                  }
+               }
+            }
+#endif /*SPRITE*/
+
+            count++;  /* square point */
+
+#endif /*SMOOTH*/
+
+	 } /*for x*/
+      } /*for y*/
+      span->end = count;
+   }}
+
+#else /* LARGE | ATTENUATE | SMOOTH | SPRITE */
+
+   /***
+    *** Single-pixel points
+    ***/
+   {{
+      GLuint count;
+
+      /* check if we need to flush */
+      if (span->end >= MAX_WIDTH ||
+          (swrast->_RasterMask & (BLEND_BIT | LOGIC_OP_BIT | MASKING_BIT))) {
+#if FLAGS & RGBA
+         _swrast_write_rgba_span(ctx, span);
+#else
+         _swrast_write_index_span(ctx, span);
+#endif
+         span->end = 0;
+      }
+
+      count = span->end;
+
+#if FLAGS & RGBA
+      span->array->rgba[count][RCOMP] = red;
+      span->array->rgba[count][GCOMP] = green;
+      span->array->rgba[count][BCOMP] = blue;
+      span->array->rgba[count][ACOMP] = alpha;
+#endif
+#if FLAGS & SPECULAR
+      span->array->spec[count][RCOMP] = specRed;
+      span->array->spec[count][GCOMP] = specGreen;
+      span->array->spec[count][BCOMP] = specBlue;
+#endif
+#if FLAGS & INDEX
+      span->array->index[count] = colorIndex;
+#endif
+#if FLAGS & TEXTURE
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (ctx->Texture.Unit[u]._ReallyEnabled) {
+            COPY_4V(span->array->texcoords[u][count], texcoord[u]);
+         }
+      }
+#endif
+
+      span->array->x[count] = (GLint) vert->win[0];
+      span->array->y[count] = (GLint) vert->win[1];
+      span->array->z[count] = (GLint) (vert->win[2] + 0.5F);
+      span->end = count + 1;
+   }}
+
+#endif /* LARGE || ATTENUATE || SMOOTH */
+
+   ASSERT(span->end <= MAX_WIDTH);
+}
+
+
+#undef FLAGS
+#undef NAME