Initial revision

1 files changed, 177 insertions, 0 deletions

diff --git a/src/mesa/main/polygon.c b/src/mesa/main/polygon.c
new file mode 100644
index 00000000000..83690035ffa
--- /dev/null
+++ b/src/mesa/main/polygon.c
@@ -0,0 +1,177 @@
+/* $Id: polygon.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.1
+ * 
+ * Copyright (C) 1999  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.
+ */
+
+
+#ifdef PC_HEADER
+#include "all.h"
+#else
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "context.h"
+#include "image.h"
+#include "enums.h"
+#include "macros.h"
+#include "polygon.h"
+#include "types.h"
+#ifdef XFree86Server
+#include "GL/xf86glx.h"
+#endif
+#endif
+
+
+
+void gl_CullFace( GLcontext *ctx, GLenum mode )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCullFace");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glCullFace %s\n", gl_lookup_enum_by_nr(mode));
+
+   if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
+      gl_error( ctx, GL_INVALID_ENUM, "glCullFace" );
+      return;
+   }
+
+   ctx->Polygon.CullFaceMode = mode;
+   ctx->NewState |= NEW_POLYGON;
+
+   if (ctx->Driver.CullFace)
+      ctx->Driver.CullFace( ctx, mode );
+}
+
+
+
+void gl_FrontFace( GLcontext *ctx, GLenum mode )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFrontFace");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glFrontFace %s\n", gl_lookup_enum_by_nr(mode));
+
+   if (mode!=GL_CW && mode!=GL_CCW) {
+      gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
+      return;
+   }
+   ctx->Polygon.FrontFace = mode;
+   ctx->Polygon.FrontBit = (mode == GL_CW);
+
+   if (ctx->Driver.FrontFace)
+      ctx->Driver.FrontFace( ctx, mode );
+}
+
+
+
+void gl_PolygonMode( GLcontext *ctx, GLenum face, GLenum mode )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonMode");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glPolygonMode %s %s\n", 
+	      gl_lookup_enum_by_nr(face),
+	      gl_lookup_enum_by_nr(mode));
+
+   if (face!=GL_FRONT && face!=GL_BACK && face!=GL_FRONT_AND_BACK) {
+      gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
+      return;
+   }
+   else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
+      gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
+      return;
+   }
+
+   if (face==GL_FRONT || face==GL_FRONT_AND_BACK) {
+      ctx->Polygon.FrontMode = mode;
+   }
+   if (face==GL_BACK || face==GL_FRONT_AND_BACK) {
+      ctx->Polygon.BackMode = mode;
+   }
+
+   /* Compute a handy "shortcut" value: */
+   ctx->TriangleCaps &= ~DD_TRI_UNFILLED;
+   ctx->Polygon.Unfilled = GL_FALSE;
+
+   if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) {
+      ctx->Polygon.Unfilled = GL_TRUE;
+      ctx->TriangleCaps |= DD_TRI_UNFILLED;
+   }
+   else {
+      ctx->Polygon.Unfilled = GL_FALSE;
+   }
+
+   ctx->NewState |= (NEW_POLYGON | NEW_RASTER_OPS);
+
+   if (ctx->Driver.PolygonMode) {
+      (*ctx->Driver.PolygonMode)( ctx, face, mode );
+   }
+}
+
+
+
+/*
+ * NOTE:  stipple pattern has already been unpacked.
+ */
+void gl_PolygonStipple( GLcontext *ctx, const GLuint pattern[32] )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonStipple");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glPolygonStipple\n");
+
+   MEMCPY( ctx->PolygonStipple, pattern, 32 * 4 );
+
+   if (ctx->Polygon.StippleFlag) {
+      ctx->NewState |= NEW_RASTER_OPS;
+   }
+}
+
+
+
+void gl_GetPolygonStipple( GLcontext *ctx, GLubyte *dest )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glGetPolygonStipple\n");
+
+   gl_pack_polygon_stipple( ctx, ctx->PolygonStipple, dest );
+}
+
+
+
+void gl_PolygonOffset( GLcontext *ctx,
+                       GLfloat factor, GLfloat units )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset");
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      fprintf(stderr, "glPolygonOffset %f %f\n", factor, units);
+
+   ctx->Polygon.OffsetFactor = factor;
+   ctx->Polygon.OffsetUnits = units;
+}
+