Merge vtx-0-2-branch

1 files changed, 301 insertions, 0 deletions

diff --git a/src/mesa/tnl/t_save_loopback.c b/src/mesa/tnl/t_save_loopback.c
new file mode 100644
index 00000000000..b496a784c35
--- /dev/null
+++ b/src/mesa/tnl/t_save_loopback.c
@@ -0,0 +1,301 @@
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  5.1
+ *
+ * Copyright (C) 1999-2003  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.
+ */
+
+/* Author:
+ *    Keith Whitwell <[email protected]>
+ */
+
+#include "context.h"
+#include "enums.h"
+#include "glapi.h"
+#include "imports.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "t_context.h"
+#include "t_save_api.h"
+
+/* If someone compiles a display list like:
+ *      glBegin(Triangles)
+ *      glVertex() 
+ *      ... lots of vertices ...
+ *      glEnd()
+ *
+ * or: 
+ *      glDrawArrays(...)
+ * 
+ * and then tries to execute it like this:
+ *
+ *      glBegin(Lines)
+ *      glCallList()
+ *      glEnd()
+ *
+ * it will wind up in here, as the vertex copying used when wrapping
+ * buffers in list compilation (Triangles) won't be right for how the
+ * list is being executed (as Lines). 
+ *
+ * This could be avoided by not compiling as vertex_lists until after
+ * the first glEnd() has been seen.  However, that would miss an
+ * important category of display lists, for the sake of a degenerate
+ * usage. 
+ *
+ * Further, replaying degenerately-called lists in this fashion is
+ * probably still faster than the replay using opcodes.
+ */
+
+typedef void (*attr_func)( GLcontext *ctx, GLint target, const GLfloat * );
+
+
+/* Wrapper functions in case glVertexAttrib*fvNV doesn't exist */
+static void VertexAttrib1fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->VertexAttrib1fvNV(target, v);
+}
+
+static void VertexAttrib2fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->VertexAttrib2fvNV(target, v);
+}
+
+static void VertexAttrib3fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->VertexAttrib3fvNV(target, v);
+}
+
+static void VertexAttrib4fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->VertexAttrib4fvNV(target, v);
+}
+
+static attr_func vert_attrfunc[4] = {
+   VertexAttrib1fvNV,
+   VertexAttrib2fvNV,
+   VertexAttrib3fvNV,
+   VertexAttrib4fvNV
+};
+
+
+static void mat_attr1fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case _TNL_ATTRIB_MAT_FRONT_SHININESS:
+      ctx->Exec->Materialfv( GL_FRONT, GL_SHININESS, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_SHININESS:
+      ctx->Exec->Materialfv( GL_BACK, GL_SHININESS, v );
+      break;
+   }
+}
+
+
+static void mat_attr3fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case _TNL_ATTRIB_MAT_FRONT_INDEXES:
+      ctx->Exec->Materialfv( GL_FRONT, GL_COLOR_INDEXES, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_INDEXES:
+      ctx->Exec->Materialfv( GL_BACK, GL_COLOR_INDEXES, v );
+      break;
+   }
+}
+
+
+static void mat_attr4fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case _TNL_ATTRIB_MAT_FRONT_EMISSION:
+      ctx->Exec->Materialfv( GL_FRONT, GL_EMISSION, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_EMISSION:
+      ctx->Exec->Materialfv( GL_BACK, GL_EMISSION, v );
+      break;
+   case _TNL_ATTRIB_MAT_FRONT_AMBIENT:
+      ctx->Exec->Materialfv( GL_FRONT, GL_AMBIENT, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_AMBIENT:
+      ctx->Exec->Materialfv( GL_BACK, GL_AMBIENT, v );
+      break;
+   case _TNL_ATTRIB_MAT_FRONT_DIFFUSE:
+      ctx->Exec->Materialfv( GL_FRONT, GL_DIFFUSE, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_DIFFUSE:
+      ctx->Exec->Materialfv( GL_BACK, GL_DIFFUSE, v );
+      break;
+   case _TNL_ATTRIB_MAT_FRONT_SPECULAR:
+      ctx->Exec->Materialfv( GL_FRONT, GL_SPECULAR, v );
+      break;
+   case _TNL_ATTRIB_MAT_BACK_SPECULAR:
+      ctx->Exec->Materialfv( GL_BACK, GL_SPECULAR, v );
+      break;
+   }
+}
+
+
+static attr_func mat_attrfunc[4] = {
+   mat_attr1fv,
+   0,
+   mat_attr3fv,
+   mat_attr4fv
+};
+
+
+static void index_attr1fv(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->Indexf(v[0]);
+}
+
+static void edgeflag_attr1fv(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   ctx->Exec->EdgeFlag((v[0] == 1.0));
+}
+
+struct loopback_attr {
+   GLint target;
+   GLint sz;
+   attr_func func;
+};
+
+/* Don't emit ends and begins on wrapped primitives.  Don't replay
+ * wrapped vertices.  If we get here, it's probably because the the
+ * precalculated wrapping is wrong.
+ */
+static void loopback_prim( GLcontext *ctx,
+			   struct tnl_vertex_list *list, GLuint i,
+			   struct loopback_attr *la, GLuint nr )
+{
+   struct tnl_prim *prim = &list->prim[i];
+   GLint begin = prim->start;
+   GLint end = begin + prim->count;
+   GLfloat *data;
+   GLint j, k;
+
+   if (prim->mode & PRIM_BEGIN) {
+      glBegin( prim->mode & PRIM_MODE_MASK );
+   } else {
+      assert(i == 0);
+      assert(begin == 0);
+      begin += list->wrap_count;
+   }
+
+   data = list->buffer + begin * list->vertex_size;
+
+   for (j = begin ; j < end ; j++) {
+      GLfloat *tmp = data + la[0].sz;
+
+      for (k = 1 ; k < nr ; k++) {
+	 la[k].func( ctx, la[k].target, tmp );
+	 tmp += la[k].sz;
+      }
+	 
+      /* Fire the vertex
+       */
+      la[0].func( ctx, VERT_ATTRIB_POS, data );
+      data = tmp;
+   }
+
+   if (prim->mode & PRIM_END) {
+      glEnd();
+   }
+   else {
+      assert (i == list->prim_count-1);
+   }
+}
+
+/* Primitives generated by DrawArrays/DrawElements/Rectf may be
+ * caught here.  If there is no primitive in progress, execute them
+ * normally, otherwise need to track and discard the generated
+ * primitives.
+ */
+static void loopback_weak_prim( GLcontext *ctx,
+				struct tnl_vertex_list *list, GLuint i,
+				struct loopback_attr *la, GLuint nr )
+{
+   if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) 
+      loopback_prim( ctx, list, i, la, nr );
+   else {
+      struct tnl_prim *prim = &list->prim[i];
+
+      /* Use the prim_weak flag to ensure that if this primitive
+       * wraps, we don't mistake future vertex_lists for part of the
+       * surrounding primitive.
+       *
+       * While this flag is set, we are simply disposing of data
+       * generated by an operation now known to be a noop.
+       */
+      if (prim->mode & PRIM_BEGIN)
+	 ctx->Driver.CurrentExecPrimitive |= PRIM_WEAK;
+      if (prim->mode & PRIM_END)
+	 ctx->Driver.CurrentExecPrimitive &= ~PRIM_WEAK;
+   }
+}
+
+
+
+void _tnl_loopback_vertex_list( GLcontext *ctx, struct tnl_vertex_list *list )
+{
+   struct loopback_attr la[_TNL_ATTRIB_MAX];
+   GLuint i, nr = 0;
+
+   for (i = 0 ; i <= _TNL_ATTRIB_TEX7 ; i++) {
+      if (list->attrsz[i]) {
+	 la[nr].target = i;
+	 la[nr].sz = list->attrsz[i];
+	 la[nr].func = vert_attrfunc[list->attrsz[i]-1];
+	 nr++;
+      }
+   }
+
+   for (i = _TNL_ATTRIB_MAT_FRONT_AMBIENT ; 
+	i <= _TNL_ATTRIB_MAT_BACK_INDEXES ; 
+	i++) {
+      if (list->attrsz[i]) {
+	 la[nr].target = i;
+	 la[nr].sz = list->attrsz[i];
+	 la[nr].func = mat_attrfunc[list->attrsz[i]-1];
+	 nr++;
+      }
+   }
+
+   if (list->attrsz[_TNL_ATTRIB_EDGEFLAG]) {
+      la[nr].target = _TNL_ATTRIB_EDGEFLAG;
+      la[nr].sz = list->attrsz[_TNL_ATTRIB_EDGEFLAG];
+      la[nr].func = edgeflag_attr1fv;
+      nr++;
+   }
+
+   if (list->attrsz[_TNL_ATTRIB_INDEX]) {
+      la[nr].target = _TNL_ATTRIB_INDEX;
+      la[nr].sz = list->attrsz[_TNL_ATTRIB_INDEX];
+      la[nr].func = index_attr1fv;
+      nr++;
+   }
+
+   for (i = 0 ; i < list->prim_count ; i++) {
+      if (list->prim[i].mode & PRIM_WEAK)
+	 loopback_weak_prim( ctx, list, i, la, nr );
+      else
+	 loopback_prim( ctx, list, i, la, nr );
+   }
+}