svn merge ^/branches/released . --username marha

1 files changed, 263 insertions, 0 deletions

diff --git a/mesalib/src/mesa/main/points.c b/mesalib/src/mesa/main/points.c
new file mode 100644
index 000000000..4c8fc1f72
--- /dev/null
+++ b/mesalib/src/mesa/main/points.c
@@ -0,0 +1,263 @@
+/**
+ * \file points.c
+ * Point operations.
+ */
+
+/*
+ * 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.
+ */
+
+
+#include "glheader.h"
+#include "context.h"
+#include "macros.h"
+#include "points.h"
+#include "texstate.h"
+#include "mtypes.h"
+
+
+/**
+ * Set current point size.
+ * \param size  point diameter in pixels
+ * \sa glPointSize().
+ */
+void GLAPIENTRY
+_mesa_PointSize( GLfloat size )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (size <= 0.0) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glPointSize" );
+      return;
+   }
+
+   if (ctx->Point.Size == size)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_POINT);
+   ctx->Point.Size = size;
+
+   if (ctx->Driver.PointSize)
+      ctx->Driver.PointSize(ctx, size);
+}
+
+
+#if _HAVE_FULL_GL
+
+
+void GLAPIENTRY
+_mesa_PointParameteri( GLenum pname, GLint param )
+{
+   const GLfloat value = (GLfloat) param;
+   _mesa_PointParameterfv(pname, &value);
+}
+
+
+void GLAPIENTRY
+_mesa_PointParameteriv( GLenum pname, const GLint *params )
+{
+   GLfloat p[3];
+   p[0] = (GLfloat) params[0];
+   if (pname == GL_DISTANCE_ATTENUATION_EXT) {
+      p[1] = (GLfloat) params[1];
+      p[2] = (GLfloat) params[2];
+   }
+   _mesa_PointParameterfv(pname, p);
+}
+
+
+void GLAPIENTRY
+_mesa_PointParameterf( GLenum pname, GLfloat param)
+{
+   _mesa_PointParameterfv(pname, &param);
+}
+
+
+void GLAPIENTRY
+_mesa_PointParameterfv( GLenum pname, const GLfloat *params)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (pname) {
+      case GL_DISTANCE_ATTENUATION_EXT:
+         if (ctx->Extensions.EXT_point_parameters) {
+            if (TEST_EQ_3V(ctx->Point.Params, params))
+	       return;
+	    FLUSH_VERTICES(ctx, _NEW_POINT);
+            COPY_3V(ctx->Point.Params, params);
+            ctx->Point._Attenuated = (ctx->Point.Params[0] != 1.0 ||
+                                      ctx->Point.Params[1] != 0.0 ||
+                                      ctx->Point.Params[2] != 0.0);
+
+            if (ctx->Point._Attenuated)
+               ctx->_TriangleCaps |= DD_POINT_ATTEN;
+            else
+               ctx->_TriangleCaps &= ~DD_POINT_ATTEN;
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      case GL_POINT_SIZE_MIN_EXT:
+         if (ctx->Extensions.EXT_point_parameters) {
+            if (params[0] < 0.0F) {
+               _mesa_error( ctx, GL_INVALID_VALUE,
+                            "glPointParameterf[v]{EXT,ARB}(param)" );
+               return;
+            }
+            if (ctx->Point.MinSize == params[0])
+               return;
+            FLUSH_VERTICES(ctx, _NEW_POINT);
+            ctx->Point.MinSize = params[0];
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      case GL_POINT_SIZE_MAX_EXT:
+         if (ctx->Extensions.EXT_point_parameters) {
+            if (params[0] < 0.0F) {
+               _mesa_error( ctx, GL_INVALID_VALUE,
+                            "glPointParameterf[v]{EXT,ARB}(param)" );
+               return;
+            }
+            if (ctx->Point.MaxSize == params[0])
+               return;
+            FLUSH_VERTICES(ctx, _NEW_POINT);
+            ctx->Point.MaxSize = params[0];
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      case GL_POINT_FADE_THRESHOLD_SIZE_EXT:
+         if (ctx->Extensions.EXT_point_parameters) {
+            if (params[0] < 0.0F) {
+               _mesa_error( ctx, GL_INVALID_VALUE,
+                            "glPointParameterf[v]{EXT,ARB}(param)" );
+               return;
+            }
+            if (ctx->Point.Threshold == params[0])
+               return;
+            FLUSH_VERTICES(ctx, _NEW_POINT);
+            ctx->Point.Threshold = params[0];
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      case GL_POINT_SPRITE_R_MODE_NV:
+         /* This is one area where ARB_point_sprite and NV_point_sprite
+	  * differ.  In ARB_point_sprite the POINT_SPRITE_R_MODE is
+	  * always ZERO.  NV_point_sprite adds the S and R modes.
+	  */
+         if (ctx->Extensions.NV_point_sprite) {
+            GLenum value = (GLenum) params[0];
+            if (value != GL_ZERO && value != GL_S && value != GL_R) {
+               _mesa_error(ctx, GL_INVALID_VALUE,
+                           "glPointParameterf[v]{EXT,ARB}(param)");
+               return;
+            }
+            if (ctx->Point.SpriteRMode == value)
+               return;
+            FLUSH_VERTICES(ctx, _NEW_POINT);
+            ctx->Point.SpriteRMode = value;
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      case GL_POINT_SPRITE_COORD_ORIGIN:
+         if (ctx->Extensions.ARB_point_sprite || ctx->Extensions.NV_point_sprite) {
+            GLenum value = (GLenum) params[0];
+            if (value != GL_LOWER_LEFT && value != GL_UPPER_LEFT) {
+               _mesa_error(ctx, GL_INVALID_VALUE,
+                           "glPointParameterf[v]{EXT,ARB}(param)");
+               return;
+            }
+            if (ctx->Point.SpriteOrigin == value)
+               return;
+            FLUSH_VERTICES(ctx, _NEW_POINT);
+            ctx->Point.SpriteOrigin = value;
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glPointParameterf[v]{EXT,ARB}(pname)");
+            return;
+         }
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM,
+                      "glPointParameterf[v]{EXT,ARB}(pname)" );
+         return;
+   }
+
+   if (ctx->Driver.PointParameterfv)
+      (*ctx->Driver.PointParameterfv)(ctx, pname, params);
+}
+#endif
+
+
+
+/**
+ * Initialize the context point state.
+ *
+ * \param ctx GL context.
+ *
+ * Initializes __GLcontextRec::Point and point related constants in
+ * __GLcontextRec::Const.
+ */
+void
+_mesa_init_point(GLcontext *ctx)
+{
+   GLuint i;
+
+   ctx->Point.SmoothFlag = GL_FALSE;
+   ctx->Point.Size = 1.0;
+   ctx->Point.Params[0] = 1.0;
+   ctx->Point.Params[1] = 0.0;
+   ctx->Point.Params[2] = 0.0;
+   ctx->Point._Attenuated = GL_FALSE;
+   ctx->Point.MinSize = 0.0;
+   ctx->Point.MaxSize
+      = MAX2(ctx->Const.MaxPointSize, ctx->Const.MaxPointSizeAA);
+   ctx->Point.Threshold = 1.0;
+   ctx->Point.PointSprite = GL_FALSE; /* GL_ARB/NV_point_sprite */
+   ctx->Point.SpriteRMode = GL_ZERO; /* GL_NV_point_sprite (only!) */
+   ctx->Point.SpriteOrigin = GL_UPPER_LEFT; /* GL_ARB_point_sprite */
+   for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
+      ctx->Point.CoordReplace[i] = GL_FALSE; /* GL_ARB/NV_point_sprite */
+   }
+}