1 files changed, 218 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/src/mesa/tnl/t_pipeline.c b/nx-X11/extras/Mesa_6.4.2/src/mesa/tnl/t_pipeline.c
new file mode 100644
index 000000000..61bfed290
--- /dev/null
+++ b/nx-X11/extras/Mesa_6.4.2/src/mesa/tnl/t_pipeline.c
@@ -0,0 +1,218 @@
+
+/*
+ * 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "context.h"
+#include "imports.h"
+#include "state.h"
+#include "mtypes.h"
+
+#include "math/m_translate.h"
+#include "math/m_xform.h"
+
+#include "t_context.h"
+#include "t_pipeline.h"
+#include "t_vp_build.h"
+#include "t_vertex.h"
+
+void _tnl_install_pipeline( GLcontext *ctx,
+			    const struct tnl_pipeline_stage **stages )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   GLuint i;
+
+   tnl->pipeline.new_state = ~0;
+
+   /* Create a writeable copy of each stage.
+    */
+   for (i = 0 ; i < MAX_PIPELINE_STAGES && stages[i] ; i++) {
+      struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+      MEMCPY(s, stages[i], sizeof(*s));
+      if (s->create)
+	 s->create(ctx, s);
+   }
+
+   tnl->pipeline.nr_stages = i;
+}
+
+void _tnl_destroy_pipeline( GLcontext *ctx )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   GLuint i;
+
+   for (i = 0 ; i < tnl->pipeline.nr_stages ; i++) {
+      struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+      if (s->destroy)
+	 s->destroy(s);
+   }
+
+   tnl->pipeline.nr_stages = 0;
+}
+
+
+
+static GLuint check_input_changes( GLcontext *ctx )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   GLuint i;
+   
+   for (i = 0; i < _TNL_ATTRIB_EDGEFLAG; i++) {
+      if (tnl->vb.AttribPtr[i]->size != tnl->pipeline.last_attrib_size[i] ||
+	  tnl->vb.AttribPtr[i]->stride != tnl->pipeline.last_attrib_stride[i]) {
+	 tnl->pipeline.last_attrib_size[i] = tnl->vb.AttribPtr[i]->size;
+	 tnl->pipeline.last_attrib_stride[i] = tnl->vb.AttribPtr[i]->stride;
+	 tnl->pipeline.input_changes |= 1<<i;
+      }
+   }
+
+   return tnl->pipeline.input_changes;
+}
+
+
+static GLuint check_output_changes( GLcontext *ctx )
+{
+#if 0
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   
+   for (i = 0; i < VERT_RESULT_MAX; i++) {
+      if (tnl->vb.ResultPtr[i]->size != tnl->last_result_size[i] ||
+	  tnl->vb.ResultPtr[i]->stride != tnl->last_result_stride[i]) {
+	 tnl->last_result_size[i] = tnl->vb.ResultPtr[i]->size;
+	 tnl->last_result_stride[i] = tnl->vb.ResultPtr[i]->stride;
+	 tnl->pipeline.output_changes |= 1<<i;
+      }
+   }
+
+   if (tnl->pipeline.output_changes) 
+      tnl->Driver.NotifyOutputChanges( ctx, tnl->pipeline.output_changes );
+   
+   return tnl->pipeline.output_changes;
+#else
+   return ~0;
+#endif
+}
+
+
+void _tnl_run_pipeline( GLcontext *ctx )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   unsigned short __tmp;
+   GLuint i;
+
+   if (!tnl->vb.Count)
+      return;
+
+   /* Check for changed input sizes or change in stride to/from zero
+    * (ie const or non-const).
+    */
+   if (check_input_changes( ctx ) || tnl->pipeline.new_state) {
+      if (ctx->_MaintainTnlProgram)
+	 _tnl_UpdateFixedFunctionProgram( ctx );
+
+      for (i = 0; i < tnl->pipeline.nr_stages ; i++) {
+	 struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+	 if (s->validate)
+	    s->validate( ctx, s );
+      }
+      
+      tnl->pipeline.new_state = 0;
+      tnl->pipeline.input_changes = 0;
+      
+      /* Pipeline can only change its output in response to either a
+       * statechange or an input size/stride change.  No other changes
+       * are allowed.
+       */
+      if (check_output_changes( ctx ))
+	 _tnl_notify_pipeline_output_change( ctx );
+   }
+
+   START_FAST_MATH(__tmp);
+
+   for (i = 0; i < tnl->pipeline.nr_stages ; i++) {
+      struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+      if (!s->run( ctx, s ))
+	 break;
+   }
+
+   END_FAST_MATH(__tmp);
+}
+
+
+
+/* The default pipeline.  This is useful for software rasterizers, and
+ * simple hardware rasterizers.  For customization, I don't recommend
+ * tampering with the internals of these stages in the way that
+ * drivers did in Mesa 3.4.  These stages are basically black boxes,
+ * and should be left intact.
+ *
+ * To customize the pipeline, consider:
+ *
+ * - removing redundant stages (making sure that the software rasterizer
+ *   can cope with this on fallback paths).  An example is fog
+ *   coordinate generation, which is not required in the FX driver.
+ *
+ * - replacing general-purpose machine-independent stages with
+ *   general-purpose machine-specific stages.  There is no example of
+ *   this to date, though it must be borne in mind that all subsequent
+ *   stages that reference the output of the new stage must cope with
+ *   any machine-specific data introduced.  This may not be easy
+ *   unless there are no such stages (ie the new stage is the last in
+ *   the pipe).
+ *
+ * - inserting optimized (but specialized) stages ahead of the
+ *   general-purpose fallback implementation.  For example, the old
+ *   fastpath mechanism, which only works when the VB->Elts input is
+ *   available, can be duplicated by placing the fastpath stage at the
+ *   head of this pipeline.  Such specialized stages are currently
+ *   constrained to have no outputs (ie. they must either finish the *
+ *   pipeline by returning GL_FALSE from run(), or do nothing).
+ *
+ * Some work can be done to lift some of the restrictions in the final
+ * case, if it becomes necessary to do so.
+ */
+const struct tnl_pipeline_stage *_tnl_default_pipeline[] = {
+   &_tnl_vertex_transform_stage,
+   &_tnl_normal_transform_stage,
+   &_tnl_lighting_stage,
+   &_tnl_fog_coordinate_stage,
+   &_tnl_texgen_stage,
+   &_tnl_texture_transform_stage,
+   &_tnl_point_attenuation_stage,
+#if defined(FEATURE_NV_vertex_program) || defined(FEATURE_ARB_vertex_program)
+   &_tnl_arb_vertex_program_stage,
+   &_tnl_vertex_program_stage, 
+#endif
+   &_tnl_render_stage,
+   NULL 
+};
+
+const struct tnl_pipeline_stage *_tnl_vp_pipeline[] = {
+   &_tnl_arb_vertex_program_stage,
+   &_tnl_render_stage,
+   NULL
+};