First pass of mesa-4-0 branch merge into trunk.

1 files changed, 278 insertions, 0 deletions

diff --git a/xc/extras/Mesa/src/swrast/s_points.c b/xc/extras/Mesa/src/swrast/s_points.c
new file mode 100644
index 000000000..48419d11f
--- /dev/null
+++ b/xc/extras/Mesa/src/swrast/s_points.c
@@ -0,0 +1,278 @@
+/* $Id: s_points.c,v 1.2 2002/02/14 01:59:40 dawes Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.5
+ *
+ * Copyright (C) 1999-2001  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.
+ */
+
+
+#include "glheader.h"
+#include "colormac.h"
+#include "context.h"
+#include "macros.h"
+#include "mmath.h"
+#include "texstate.h"
+#include "s_context.h"
+#include "s_feedback.h"
+#include "s_pb.h"
+#include "s_points.h"
+#include "s_span.h"
+
+
+
+#define INDEX      0x0
+#define RGBA       0x1
+#define SMOOTH     0x2
+#define TEXTURE    0x4
+#define SPECULAR   0x8
+#define LARGE     0x10
+#define ATTENUATE 0x20
+#define SPRITE    0x40
+
+
+/*
+ * CI points with size == 1.0
+ */
+#define FLAGS (INDEX)
+#define NAME size1_ci_point
+#include "s_pointtemp.h"
+
+
+/*
+ * General CI points.
+ */
+#define FLAGS (INDEX | LARGE)
+#define NAME general_ci_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Antialiased CI points.
+ */
+#define FLAGS (INDEX | SMOOTH)
+#define NAME antialiased_ci_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Distance attenuated, general CI points.
+ */
+#define FLAGS (INDEX | ATTENUATE)
+#define NAME atten_general_ci_point
+#include "s_pointtemp.h"
+
+
+/*
+ * RGBA points with size == 1.0
+ */
+#define FLAGS (RGBA)
+#define NAME size1_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * General RGBA points.
+ */
+#define FLAGS (RGBA | LARGE)
+#define NAME general_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Antialiased RGBA points.
+ */
+#define FLAGS (RGBA | SMOOTH)
+#define NAME antialiased_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Textured RGBA points.
+ */
+#define FLAGS (RGBA | LARGE | TEXTURE | SPECULAR)
+#define NAME textured_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Antialiased points with texture mapping.
+ */
+#define FLAGS (RGBA | SMOOTH | TEXTURE | SPECULAR)
+#define NAME antialiased_tex_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Distance attenuated, general RGBA points.
+ */
+#define FLAGS (RGBA | ATTENUATE)
+#define NAME atten_general_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Distance attenuated, textured RGBA points.
+ */
+#define FLAGS (RGBA | ATTENUATE | TEXTURE | SPECULAR)
+#define NAME atten_textured_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Distance attenuated, antialiased points with or without texture mapping.
+ */
+#define FLAGS (RGBA | ATTENUATE | TEXTURE | SMOOTH)
+#define NAME atten_antialiased_rgba_point
+#include "s_pointtemp.h"
+
+
+/*
+ * Sprite (textured point)
+ */
+#define FLAGS (RGBA | TEXTURE | SPRITE)
+#define NAME sprite_point
+#include "s_pointtemp.h"
+
+
+#define FLAGS (RGBA | ATTENUATE | TEXTURE | SPRITE)
+#define NAME atten_sprite_point
+#include "s_pointtemp.h"
+
+
+
+void _swrast_add_spec_terms_point( GLcontext *ctx,
+				   const SWvertex *v0 )
+{
+   SWvertex *ncv0 = (SWvertex *)v0;
+   GLchan c[1][4];
+   COPY_CHAN4( c[0], ncv0->color );
+   ACC_3V( ncv0->color, ncv0->specular );
+   SWRAST_CONTEXT(ctx)->SpecPoint( ctx, ncv0 );
+   COPY_CHAN4( ncv0->color, c[0] );
+}
+
+
+
+/* record the current point function name */
+#ifdef DEBUG
+
+static const char *pntFuncName = NULL;
+
+#define USE(pntFunc)                   \
+do {                                   \
+    pntFuncName = #pntFunc;            \
+    /*printf("%s\n", pntFuncName);*/   \
+    swrast->Point = pntFunc;           \
+} while (0)
+
+#else
+
+#define USE(pntFunc)  swrast->Point = pntFunc
+
+#endif
+
+
+/*
+ * Examine the current context to determine which point drawing function
+ * should be used.
+ */
+void
+_swrast_choose_point( GLcontext *ctx )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLboolean rgbMode = ctx->Visual.rgbMode;
+
+   if (ctx->RenderMode==GL_RENDER) {
+      if (ctx->Point.SpriteMode) {
+         /* XXX this might not be good enough */
+         if (ctx->Point._Attenuated)
+            USE(atten_sprite_point);
+         else
+            USE(sprite_point);
+      }
+      else if (ctx->Point.SmoothFlag) {
+         /* Smooth points */
+         if (rgbMode) {
+            if (ctx->Point._Attenuated) {
+               USE(atten_antialiased_rgba_point);
+            }
+            else if (ctx->Texture._ReallyEnabled) {
+               USE(antialiased_tex_rgba_point);
+            }
+            else {
+               USE(antialiased_rgba_point);
+            }
+         }
+         else {
+            USE(antialiased_ci_point);
+         }
+      }
+      else if (ctx->Point._Attenuated) {
+         if (rgbMode) {
+            if (ctx->Texture._ReallyEnabled) {
+               if (ctx->Point.SmoothFlag) {
+                  USE(atten_antialiased_rgba_point);
+               }
+               else {
+                  USE(atten_textured_rgba_point);
+               }
+            }
+            else {
+               USE(atten_general_rgba_point);
+            }
+         }
+         else {
+            /* ci, atten */
+            USE(atten_general_ci_point);
+         }
+      }
+      else if (ctx->Texture._ReallyEnabled && rgbMode) {
+         /* textured */
+         USE(textured_rgba_point);
+      }
+      else if (ctx->Point.Size != 1.0) {
+         /* large points */
+         if (rgbMode) {
+            USE(general_rgba_point);
+         }
+         else {
+            USE(general_ci_point);
+         }
+      }
+      else {
+         /* single pixel points */
+         if (rgbMode) {
+            USE(size1_rgba_point);
+         }
+         else {
+            USE(size1_ci_point);
+         }
+      }
+   }
+   else if (ctx->RenderMode==GL_FEEDBACK) {
+      USE(_mesa_feedback_point);
+   }
+   else {
+      /* GL_SELECT mode */
+      USE(_mesa_select_point);
+   }
+}